Siemens Sirius 3rt User guide

SIRIUS Innovations

System Manual •01/2011

Industrial Controls

Answers for industry.

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SIRIUS Innovations

_________________

Industrial controls

SIRIUS Innovations

System Manual

01/2011

A8E56203870002-03

System overview 1

SIRIUS 3RT2

contactors/contactor

assemblies

SIRIUS 3RF34 solid-state

switching devices

SIRIUS 3RV2 motor starter

protectors

SIRIUS 3RU2/3RB3

overload relays

SIRIUS 3RA21/22 load

feeders

SIRIUS 3RA28 function

modules for mounting on

3RT2 contactors

SIRIUS 3RR2 current

monitoring relays

Appendix A

Legal information

Warning notice system

This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent

damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert

symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are

graded according to the degree of danger.

DANGER

indicates that death or severe personal injury will result if proper precautions are not taken.

WARNING

indicates that death or severe personal injury may result if proper precautions are not taken.

CAUTION

with a safety alert symbol, indicates that minor personal injury can result if proper precautions are not taken.

CAUTION

without a safety alert symbol, indicates that property damage can result if proper precautions are not taken.

NOTICE

indicates that an unintended result or situation can occur if the corresponding information is not taken into

account.

If more than one degree of danger is present, the warning notice representing the highest degree of danger will

be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to

property damage.

Qualified Personnel

The product/system described in this documentation may be operated only by personnel qualified for the specific

task in accordance with the relevant documentation for the specific task, in particular its warning notices and

safety instructions. Qualified personnel are those who, based on their training and experience, are capable of

identifying risks and avoiding potential hazards when working with these products/systems.

Proper use of Siemens products

Note the following:

WARNING

Siemens products may only be used for the applications described in the catalog and in the relevant technical

documentation. If products and components from other manufacturers are used, these must be recommended

or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and

maintenance are required to ensure that the products operate safely and without any problems. The permissible

ambient conditions must be adhered to. The information in the relevant documentation must be observed.

Trademarks

All names identified by ® are registered trademarks of the Siemens AG. The remaining trademarks in this

publication may be trademarks whose use by third parties for their own purposes could violate the rights of the

owner.

Disclaimer of Liability

We have reviewed the contents of this publication to ensure consistency with the hardware and software

described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the

information in this publication is reviewed regularly and any necessary corrections are included in subsequent

editions.

Siemens AG

Industry Sector

Postfach 48 48

90026 NÜRNBERG

GERMANY

Order number: 3ZX1012-0RA01-1AC1

Ⓟ 01/2011

Technical data subject to change

SIRIUS Innovations

System Manual, 01/2011, A8E56203870002-03 5

Table of contents

1 System overview...................................................................................................................................... 19

1.1 Introduction ..................................................................................................................................19

1.1.1 Modular system for SIRIUS .........................................................................................................19

1.1.2 SIRIUS Innovations......................................................................................................................20

1.2 Safety instructions........................................................................................................................22

1.3 Standards and approvals.............................................................................................................23

1.3.1 Standards.....................................................................................................................................23

1.3.2 Approvals, test certificates, characteristics..................................................................................24

1.4 Overview ......................................................................................................................................25

1.4.1 SIRIUS modular system...............................................................................................................25

1.4.2 Content of SIRIUS Innovations System Manual..........................................................................27

1.5 System properties ........................................................................................................................28

1.5.1 System properties ........................................................................................................................28

1.5.2 Modular system design................................................................................................................29

1.5.3 Switching technology ...................................................................................................................30

1.5.4 Uniform connection system..........................................................................................................32

1.5.5 Flexible assembly methods..........................................................................................................33

1.5.6 Performance capability ................................................................................................................33

1.5.7 Assembly and mounting...............................................................................................................34

1.5.8 Load feeders ................................................................................................................................34

1.5.9 Application monitoring..................................................................................................................36

1.5.10 Communication ............................................................................................................................37

1.5.11 Safety applications.......................................................................................................................38

1.5.12 Environmental protection .............................................................................................................38

1.5.13 Energy efficiency..........................................................................................................................38

1.6 Customer benefits........................................................................................................................40

1.7 Components and combinations ...................................................................................................42

1.7.1 Switching and starting..................................................................................................................42

1.7.1.1 SIRIUS 3RT2 contactors..............................................................................................................42

1.7.1.2 SIRIUS 3RF34 solid-state switching devices...............................................................................48

1.7.1.3 SIRIUS 3RW30/40 soft starters ...................................................................................................49

1.7.2 Protecting.....................................................................................................................................51

1.7.2.1 SIRIUS 3RV2 motor starter protectors ........................................................................................51

1.7.2.2 SIRIUS 3RV2917 infeed system..................................................................................................54

1.7.2.3 SIRIUS 3RU2/3RB3 overload relays ...........................................................................................55

1.7.3 Monitoring ....................................................................................................................................57

1.7.3.1 SIRIUS 3RR2 current monitoring relays ......................................................................................57

1.7.4 Feeders........................................................................................................................................59

1.7.4.1 SIRIUS 3RA21/22 load feeders ...................................................................................................59

1.7.4.2 SIRIUS 3RA6 compact starters ...................................................................................................61

1.7.5 Function modules.........................................................................................................................65

1.7.5.1 SIRIUS 3RA28 function modules for mounting on SIRIUS 3RT2 contactors..............................66

1.7.5.2 SIRIUS 3RA27 function modules for connection to the automation level ...................................68

1.7.6 Device combinations....................................................................................................................70

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1.8 Mounting and disassembly.......................................................................................................... 72

1.8.1 Screw mounting .......................................................................................................................... 72

1.8.2 Snap-on mounting....................................................................................................................... 72

1.9 Connection .................................................................................................................................. 74

1.9.1 Connection systems.................................................................................................................... 74

1.9.1.1 Screw connection........................................................................................................................ 74

1.9.1.2 Spring-loaded connection ........................................................................................................... 75

1.9.1.3 Ring cable lug connection........................................................................................................... 79

1.9.2 Conductor cross-sections............................................................................................................ 79

1.9.2.1 Conductor cross-sections for screw-type connection systems................................................... 80

1.9.2.2 Conductor cross-sections for spring-loaded connection systems............................................... 82

1.9.2.3 Conductor cross-sections for ring cable lug connection system................................................. 84

1.9.3 Image database .......................................................................................................................... 85

1.10 Connection to the higher-level control ........................................................................................ 86

1.10.1 Connection to the higher-level control ........................................................................................ 86

1.10.2 IO-Link......................................................................................................................................... 89

1.10.2.1 Overview ..................................................................................................................................... 89

1.10.2.2 Benefits ....................................................................................................................................... 90

1.10.2.3 Applications................................................................................................................................. 91

1.10.3 AS-Interface ................................................................................................................................ 94

1.10.3.1 Overview ..................................................................................................................................... 94

1.10.3.2 Benefits ....................................................................................................................................... 95

1.10.3.3 Operating modes......................................................................................................................... 95

1.10.3.4 Process communication and field communication...................................................................... 96

1.10.3.5 System components.................................................................................................................... 97

1.10.3.6 Technical data............................................................................................................................. 98

1.10.3.7 More information ......................................................................................................................... 99

2 SIRIUS 3RT2 contactors/contactor assemblies ..................................................................................... 101

2.1 Standards.................................................................................................................................. 101

2.1.1 General regulations and standards........................................................................................... 101

2.1.2 Protective separation ................................................................................................................ 102

2.1.3 Positively driven contact elements/Mirror contacts................................................................... 103

2.2 Product description ................................................................................................................... 104

2.2.1 Overview of the contactor range ............................................................................................... 104

2.2.2 Device versions......................................................................................................................... 104

2.2.2.1 3RH2 contactor relays............................................................................................................... 105

2.2.2.2 3RT2 power contactors............................................................................................................. 107

2.2.2.3 3RA23 reversing contactor assemblies .................................................................................... 110

2.2.2.4 3RA24 contactor assemblies for star-delta (wye-delta) start.................................................... 111

2.2.2.5 Drive options ............................................................................................................................. 112

2.2.3 Applications............................................................................................................................... 113

2.2.4 Performance features................................................................................................................ 114

2.3 Product combinations................................................................................................................ 115

2.4 Configuration............................................................................................................................. 116

2.4.1 Overview of applications for contactors and contactor assemblies .......................................... 116

2.4.2 Drive system/Coil selection....................................................................................................... 117

2.4.3 Application environment............................................................................................................ 118

2.4.3.1 3RH2 contactor relays............................................................................................................... 118

2.4.3.2 3RT2 power contactors............................................................................................................. 118

2.4.3.3 Contactors for railway applications ........................................................................................... 121

2.4.3.4 Installation altitude .................................................................................................................... 122

2.4.4 Switching motorized loads ........................................................................................................ 123

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2.4.5 Switching resistive loads............................................................................................................124

2.4.6 Changing the polarity of hoisting gear motors ...........................................................................125

2.4.7 Switching in the auxiliary circuit .................................................................................................126

2.4.8 Contactors with extended operating range ................................................................................127

2.4.8.1 Overview ....................................................................................................................................127

2.4.8.2 Contactors with UC drive ...........................................................................................................127

2.4.8.3 Contactors for railway applications ............................................................................................128

2.4.8.4 Coupling relays ..........................................................................................................................130

2.4.9 Operation of a motor in two directions of rotation (3RA23 reversing contactor assembly) .......132

2.4.10 Starting three-phase motors with reduced starting current peaks (3RA24 contactor

assembly for star-delta (wye-delta) start) ..................................................................................135

2.4.10.1 Technical background information.............................................................................................136

2.4.11 Using long control cables...........................................................................................................141

2.5 Mounting ....................................................................................................................................148

2.5.1 Mounting ....................................................................................................................................148

2.5.1.1 Mounting options........................................................................................................................148

2.5.1.2 Mounting position.......................................................................................................................148

2.5.1.3 Mounting on mounting plate.......................................................................................................149

2.5.1.4 Snapping onto DIN rail (snap-on mounting) ..............................................................................150

2.5.2 Replacing magnet coils..............................................................................................................150

2.6 Connection.................................................................................................................................153

2.7 Accessories................................................................................................................................155

2.7.1 Accessories overview ................................................................................................................155

2.7.2 Auxiliary switch blocks ...............................................................................................................161

2.7.2.1 Description .................................................................................................................................161

2.7.2.2 Configuration..............................................................................................................................164

2.7.2.3 Mounting/Disassembly...............................................................................................................167

2.7.3 Surge suppressor.......................................................................................................................170

2.7.3.1 Description .................................................................................................................................170

2.7.3.2 Configuration..............................................................................................................................171

2.7.3.3 Mounting ....................................................................................................................................178

2.7.4 EMC suppression module..........................................................................................................179

2.7.4.1 Description .................................................................................................................................179

2.7.4.2 Configuration..............................................................................................................................180

2.7.4.3 Mounting ....................................................................................................................................182

2.7.5 OFF-delay device.......................................................................................................................183

2.7.5.1 Description .................................................................................................................................183

2.7.5.2 Configuration..............................................................................................................................183

2.7.5.3 Mounting ....................................................................................................................................183

2.7.6 Mechanical latch ........................................................................................................................185

2.7.6.1 Description .................................................................................................................................185

2.7.6.2 Mounting/Disassembly...............................................................................................................185

2.7.6.3 Operation ...................................................................................................................................187

2.7.7 Additional load module...............................................................................................................188

2.7.7.1 Description .................................................................................................................................188

2.7.7.2 Mounting ....................................................................................................................................188

2.7.8 Control kit for manual operation of contactor contacts ..............................................................189

2.7.8.1 Description .................................................................................................................................189

2.7.8.2 Mounting ....................................................................................................................................189

2.7.9 Coupling link for PLC .................................................................................................................190

2.7.9.1 Description .................................................................................................................................190

2.7.9.2 Mounting ....................................................................................................................................191

2.7.10 LED display indicator module ....................................................................................................192

2.7.10.1 Description .................................................................................................................................192

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2.7.10.2 Mounting.................................................................................................................................... 192

2.7.11 Solder pin adapter..................................................................................................................... 193

2.7.11.1 Description ................................................................................................................................ 193

2.7.11.2 Mounting.................................................................................................................................... 194

2.7.12 Coil terminal module ................................................................................................................. 195

2.7.12.1 Description ................................................................................................................................ 195

2.7.12.2 Mounting.................................................................................................................................... 196

2.7.13 Cover for ring cable lug............................................................................................................. 197

2.7.13.1 Description ................................................................................................................................ 197

2.7.14 Sealable cover .......................................................................................................................... 198

2.7.14.1 Description ................................................................................................................................ 198

2.7.14.2 Mounting.................................................................................................................................... 198

2.7.15 3-phase infeed terminal............................................................................................................. 199

2.7.15.1 Description ................................................................................................................................ 199

2.7.15.2 Mounting.................................................................................................................................... 199

2.7.16 Parallel switching connectors.................................................................................................... 200

2.7.16.1 Description ................................................................................................................................ 200

2.7.16.2 Configuration............................................................................................................................. 200

2.7.16.3 Mounting.................................................................................................................................... 201

2.7.17 Link module for two contactors in series................................................................................... 202

2.7.17.1 Description ................................................................................................................................ 202

2.7.17.2 Mounting.................................................................................................................................... 202

2.7.18 Link module for motor starter protector..................................................................................... 204

2.7.18.1 Description ................................................................................................................................ 204

2.7.19 Pneumatic timer ........................................................................................................................ 205

2.7.19.1 Description ................................................................................................................................ 205

2.7.19.2 Mounting/Disassembly.............................................................................................................. 205

2.7.19.3 Operation................................................................................................................................... 206

2.7.20 Insulating stop ........................................................................................................................... 207

2.7.20.1 Description ................................................................................................................................ 207

2.7.21 Terminal module for contactors with screw connections .......................................................... 208

2.7.21.1 Description ................................................................................................................................ 208

2.7.21.2 Mounting.................................................................................................................................... 208

2.7.22 3RA27 function modules for connection to the automation level (AS-Interface or IO-Link) ..... 210

2.7.22.1 Description ................................................................................................................................ 210

2.7.23 3RA28 function modules for mounting on 3RT2 contactors ..................................................... 211

2.7.23.1 Description ................................................................................................................................ 211

2.7.24 Assembly kit for reversing contactor assemblies...................................................................... 212

2.7.24.1 Description ................................................................................................................................ 212

2.7.24.2 Mounting.................................................................................................................................... 212

2.7.25 Assembly kit for contactor assemblies for star-delta (wye-delta) start ..................................... 219

2.7.25.1 Description ................................................................................................................................ 219

2.7.25.2 Mounting.................................................................................................................................... 221

2.8 Technical data........................................................................................................................... 228

2.8.1 Contactors for switching motors (3RT20) ................................................................................. 228

2.8.1.1 Rated data for auxiliary contacts............................................................................................... 228

2.8.1.2 Contact service life of auxiliary and main contacts ................................................................... 230

2.8.1.3 General data and short-circuit protection for 3RT201. contactors without overload relay........ 232

2.8.1.4 Actuation - 3RT201. contactors ................................................................................................ 234

2.8.1.5 Main circuit - 3RT201. contactors (current carrying capacity for alternating current and

direct current) ............................................................................................................................ 236

2.8.1.6 Conductor cross-sections - 3RT201. contactors....................................................................... 242

2.8.1.7 General data and short-circuit protection for 3RT202. contactors without overload relay........ 243

2.8.1.8 Actuation - 3RT202. contactors ................................................................................................ 245

2.8.1.9 Main circuit - 3RT202. contactors (current carrying capacity for alternating current)............... 248

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2.8.1.10 Rated data for auxiliary contacts (CSA and UL)........................................................................251

2.8.1.11 Main circuit - 3RT202. contactors (current carrying capacity for direct current)........................252

2.8.1.12 Conductor cross-sections - 3RT202. contactors........................................................................254

2.8.1.13 Rated data (CSA and UL) for 3RT201. and 3RT202. contactors ..............................................256

2.8.2 Contactors for specific applications (3RT23 and 3RT25)..........................................................258

2.8.2.1 General data, short-circuit protection for contactors without overload relay and actuation

(3RT231. and 3RT232. contactors) ...........................................................................................258

2.8.2.2 Main circuit - 3RT231. and 3RT232. (current carrying capacity for alternating current and

direct current).............................................................................................................................261

2.8.2.3 General data, short-circuit protection for contactors without overload relay and actuation

(3RT251. and 3RT252. contactors) ...........................................................................................263

2.8.2.4 Main circuit - 3RT251. and 3RT252. (current carrying capacity for alternating current and

direct current).............................................................................................................................264

2.8.3 Contactors with extended operating range ................................................................................266

2.8.3.1 Contactors for railway applications ............................................................................................266

2.8.3.2 Coupling relays ..........................................................................................................................267

2.8.4 3RH2 contactor relays ...............................................................................................................271

2.8.4.1 Permissible mounting position, positively driven operation of contacts and contact

reliability of 3RH2 contactor relays (4- and 8-pole)....................................................................271

2.8.4.2 General data, rated data (CSA and UL), and data relating to short-circuit protection for

3RH2. contactor relays ..............................................................................................................272

2.8.4.3 Conductor cross-sections - 3RH2. contactor relays ..................................................................274

2.8.4.4 Actuation - 3RH2. contactor relays ............................................................................................275

2.8.4.5 Load side of 3RH2. contactor relays..........................................................................................277

2.8.5 Accessories for 3RT2 contactors and 3RH2 contactor relays...................................................279

2.8.5.1 General data - Pneumatic timer 3RT2926-2P. ..........................................................................279

2.8.5.2 General data - OFF-delay device 3RT2916-2B.........................................................................280

2.8.5.3 General data - Terminal module for contactors with screw connection.....................................282

2.8.5.4 General data - Mechanical latch 3RT2926-3A...........................................................................284

2.8.5.5 General data - Control side and load side - coupling link 3RH2924-1GP11 .............................285

2.9 Dimension drawings (dimensions in mm) ..................................................................................287

2.9.1 Contactors and contactor relays (size S00)...............................................................................287

2.9.2 Contactors (size S0) ..................................................................................................................291

2.10 Circuit diagrams .........................................................................................................................294

2.10.1 Contactors and contactor accessories.......................................................................................295

2.10.2 Reversing contactor assembly (S00/S0) ...................................................................................309

2.10.3 Contactor assemblies for star-delta (wye-delta) start ................................................................310

3 SIRIUS 3RF34 solid-state switching devices ......................................................................................... 313

3.1 Safety instructions......................................................................................................................313

3.1.1 Standards...................................................................................................................................315

3.2 Product description ....................................................................................................................316

3.2.1 Device versions..........................................................................................................................316

3.2.2 Applications................................................................................................................................318

3.2.3 Application environment.............................................................................................................319

3.2.4 Solid-state switching devices.....................................................................................................320

3.2.5 Device labels..............................................................................................................................322

3.2.6 Advantages of solid-state switching devices .............................................................................325

3.3 Product combinations ................................................................................................................326

3.4 Functions....................................................................................................................................327

3.4.1 Actuation of solid-state switching devices .................................................................................328

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3.5 Planning/configuring.................................................................................................................. 329

3.5.1 Selecting solid-state switching devices..................................................................................... 329

3.5.2 Configuration: Selecting solid-state contactors for motors ....................................................... 330

3.5.3 Short-circuit protection .............................................................................................................. 334

3.5.3.1 Mounting accessories for the load feeder conforming to IEC................................................... 334

3.5.3.2 Mounting accessories for the load feeder conforming to UL .................................................... 336

3.6 Application planning.................................................................................................................. 339

3.6.1 Application areas....................................................................................................................... 340

3.6.1.1 Switching motors....................................................................................................................... 340

3.6.1.2 Use in a photovoltaic plant........................................................................................................ 340

3.7 Mounting.................................................................................................................................... 341

3.7.1 Mounting instructions ................................................................................................................ 341

3.7.2 Screw mounting ........................................................................................................................ 343

3.7.3 Snapping onto/off DIN rail (snap-on mounting)......................................................................... 343

3.8 Connection ................................................................................................................................ 344

3.8.1 Solid-state contactor ................................................................................................................. 344

3.8.2 Solid-state reversing contactor ................................................................................................. 345

3.9 FAQs - Frequently asked questions..........................................................................................346

3.10 Accessories............................................................................................................................... 347

3.10.1 Accessories overview................................................................................................................ 347

3.10.2 Insulating stop ........................................................................................................................... 347

3.10.2.1 Description ................................................................................................................................ 347

3.10.3 Link module for motor starter protector..................................................................................... 348

3.10.3.1 Description ................................................................................................................................ 348

3.10.3.2 Mounting/Disassembly.............................................................................................................. 349

3.11 Technical data........................................................................................................................... 350

3.11.1 General data ............................................................................................................................. 350

3.11.2 Conductor cross-sections for solid-state contactors ................................................................. 352

3.11.3 Conductor cross-sections for solid-state reversing contactors ................................................. 353

3.11.4 Solid-state contactors 3RF34, 3-phase, screw connection....................................................... 354

3.11.5 Solid-state contactors 3RF34, 3-phase, spring-loaded terminals............................................. 355

3.11.6 Solid-state contactors - fuseless design with CLASS 10 motor starter protector ..................... 356

3.11.7 Solid-state contactors - fused design with 3RB30 overload relay............................................. 357

3.11.8 Solid-state contactors - main circuit, 2-phase controlled .......................................................... 358

3.11.9 Solid-state contactors with control circuit.................................................................................. 358

3.11.10 Solid-state reversing contactor with integration of four current paths to form a single

reversing circuit ......................................................................................................................... 359

3.11.11 Solid-state contactors - fuseless design with CLASS 10 motor starter protector ..................... 359

3.11.12 Solid-state contactor - fused design with 3RB30 overload relay .............................................. 360

3.11.13 Solid-state reversing contactor - main circuit, 2-phase controlled ............................................ 360

3.11.14 Solid-state reversing contactor with control circuit.................................................................... 361

3.11.15 Characteristics - switching frequency/load................................................................................ 362

3.11.15.1 Characteristics for the solid-state contactor......................................................................... 362

3.11.15.2 Characteristics for the solid-state reversing contactor......................................................... 367

3.12 Dimension drawings (dimensions in mm) ................................................................................. 372

3.12.1 Solid-state switching devices .................................................................................................... 372

3.12.2 Link module for motor starter protector..................................................................................... 373

3.13 Circuit diagrams ........................................................................................................................ 374

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4 SIRIUS 3RV2 motor starter protectors................................................................................................... 379

4.1 Standards...................................................................................................................................379

4.2 Product description ....................................................................................................................380

4.2.1 Introduction ................................................................................................................................380

4.2.2 Versions .....................................................................................................................................381

4.2.3 Applications................................................................................................................................382

4.2.4 Motor starter protectors..............................................................................................................383

4.2.5 Performance features ................................................................................................................384

4.3 Product combinations ................................................................................................................385

4.4 Functions....................................................................................................................................386

4.4.1 Overload and short-circuit protection.........................................................................................386

4.4.1.1 Tripping classes .........................................................................................................................387

4.4.1.2 Tripping characteristics ..............................................................................................................388

4.4.2 Phase loss sensitivity.................................................................................................................390

4.4.3 Protecting single-phase loads or DC loads................................................................................390

4.4.4 Test function...............................................................................................................................390

4.5 Configuration..............................................................................................................................391

4.5.1 Short-circuit protection ...............................................................................................................391

4.5.2 Motor protection .........................................................................................................................391

4.5.3 System protection ......................................................................................................................391

4.5.4 Motor protection with overload relay function ............................................................................392

4.5.5 Short-circuit protection for starter combinations ........................................................................392

4.5.6 Transformer protection...............................................................................................................393

4.5.7 Main switch ................................................................................................................................393

4.5.8 Use in IT systems ......................................................................................................................393

4.5.9 Switching direct current..............................................................................................................394

4.5.10 Devices for North America (UL/CSA) ........................................................................................395

4.5.10.1 Approved according to UL 508/CSA C22.2 No. 14....................................................................395

4.5.10.2 Approval as "circuit breaker" according to UL 489/CSA C 22.2 No. 5-02 .................................396

4.5.11 Application environment.............................................................................................................396

4.5.12 Selecting the motor starter protectors........................................................................................398

4.5.13 Project guidelines for use downstream of frequency converters/inverters with pulsed

voltage........................................................................................................................................398

4.5.13.1 The effects of high-frequency currents on the thermal overload release ..................................398

4.5.13.2 Capacitive leakage currents.......................................................................................................399

4.5.13.3 Speed control of motors with characteristic-controlled frequency converters ...........................400

4.6 Mounting ....................................................................................................................................401

4.6.1 Standard mounting.....................................................................................................................401

4.6.1.1 Minimum clearances and mounting position..............................................................................401

4.6.1.2 Mounting ....................................................................................................................................402

4.6.2 Mounting in limiter circuit ...........................................................................................................403

4.7 Connection.................................................................................................................................403

4.8 Operation ...................................................................................................................................404

4.8.1 Setting the current......................................................................................................................404

4.8.2 Testing the overload release......................................................................................................405

4.8.3 Testing the overload relay function (3RV21) .............................................................................405

4.8.4 Securing.....................................................................................................................................406

4.8.5 Reclosing after tripping ..............................................................................................................406

4.9 Accessories................................................................................................................................407

4.9.1 Accessories overview ................................................................................................................407

4.9.2 Installation rules/Component rules ............................................................................................409

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4.9.3 Auxiliary switch.......................................................................................................................... 410

4.9.3.1 Description ................................................................................................................................ 410

4.9.3.2 Mounting.................................................................................................................................... 411

4.9.3.3 Disassembly.............................................................................................................................. 412

4.9.4 Signaling switch ........................................................................................................................ 413

4.9.4.1 Description ................................................................................................................................ 413

4.9.4.2 Mounting.................................................................................................................................... 414

4.9.4.3 Disassembly.............................................................................................................................. 414

4.9.4.4 Operation and diagnostics ........................................................................................................ 415

4.9.5 Auxiliary release........................................................................................................................ 416

4.9.5.1 Description ................................................................................................................................ 416

4.9.5.2 Auxiliary release voltage ranges ............................................................................................... 417

4.9.5.3 Mounting.................................................................................................................................... 418

4.9.5.4 Disassembly.............................................................................................................................. 418

4.9.6 Disconnector module ................................................................................................................ 419

4.9.6.1 Description ................................................................................................................................ 419

4.9.6.2 Mounting.................................................................................................................................... 419

4.9.6.3 Isolation and shut-off................................................................................................................. 421

4.9.7 Phase barriers/UL 508 "type E" terminals.................................................................................422

4.9.7.1 Description ................................................................................................................................ 422

4.9.7.2 Mounting UL 508 "type E" terminals ......................................................................................... 423

4.9.7.3 Mounting phase barriers ........................................................................................................... 423

4.9.8 Door-coupling rotary operating mechanism .............................................................................. 424

4.9.8.1 Description ................................................................................................................................ 424

4.9.8.2 Mounting.................................................................................................................................... 425

4.9.8.3 Operating the door-coupling rotary operating mechanism........................................................ 426

4.9.8.4 Operating the door-coupling rotary operating mechanism for arduous conditions................... 429

4.9.9 Enclosures and mounting accessories ..................................................................................... 432

4.9.9.1 Description ................................................................................................................................ 432

4.9.9.2 Mounting.................................................................................................................................... 433

4.9.10 Sealable cover .......................................................................................................................... 436

4.9.10.1 Description ................................................................................................................................ 436

4.9.10.2 Mounting.................................................................................................................................... 436

4.9.11 Insulated 3RV19 3-phase busbar system................................................................................. 437

4.9.11.1 Description ................................................................................................................................ 437

4.9.11.2 Versions .................................................................................................................................... 438

4.9.11.3 Mounting.................................................................................................................................... 439

4.9.12 8US busbar adapter .................................................................................................................. 440

4.9.12.1 Description ................................................................................................................................ 440

4.9.12.2 Versions .................................................................................................................................... 440

4.9.12.3 Mounting.................................................................................................................................... 442

4.9.12.4 Disassembly.............................................................................................................................. 443

4.9.13 3RV2917 infeed system............................................................................................................ 446

4.9.13.1 Description ................................................................................................................................ 446

4.9.13.2 Derating..................................................................................................................................... 449

4.9.13.3 Mounting.................................................................................................................................... 450

4.9.14 Link module for attaching a contactor ....................................................................................... 452

4.9.14.1 Description ................................................................................................................................ 452

4.9.14.2 Mounting.................................................................................................................................... 452

4.10 Technical data........................................................................................................................... 453

4.10.1 Performance features................................................................................................................ 453

4.10.2 3RV2 motor starter protectors................................................................................................... 454

4.10.3 Rated data for auxiliary and signaling switches........................................................................ 456

4.10.4 Auxiliary switches, front-mounted, transverse .......................................................................... 456

4.10.5 Auxiliary switches, transverse, solid-state compatible.............................................................. 457

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SIRIUS Innovations

System Manual, 01/2011, A8E56203870002-03 13

4.10.6 Auxiliary switches, lateral and signaling switches......................................................................457

4.10.7 Auxiliary releases.......................................................................................................................458

4.10.8 Short-circuit protection for auxiliary and control circuits ............................................................458

4.10.9 Conductor cross-sections main circuit .......................................................................................459

4.10.10 Conductor cross-sections auxiliary and control circuits.............................................................460

4.10.11 Short-circuit breaking capacity...................................................................................................462

4.10.11.1 Short-circuit breaking capacity for motor starter protectors..................................................462

4.10.11.2 Short-circuit breaking capacity for motor starter protectors in the IT system .......................464

4.10.11.3 Short-circuit breaking capacity for motor starter protectors with limiter function..................467

4.10.12 Permissible rated data of approved devices for North America (UL/CSA)................................467

4.10.12.1 Approved according to UL 508/CSA C22.2 No. 14 ..............................................................467

4.10.12.2 Approval as "circuit breaker" according to UL 489/CSA C 22.2 No. 5-02 ............................476

4.11 Dimension drawings (dimensions in mm) ..................................................................................478

4.11.1 Dimension drawings for 3RV2 motor starter protectors.............................................................478

4.12 Circuit diagrams .........................................................................................................................482

5 SIRIUS 3RU2/3RB3 overload relays...................................................................................................... 485

5.1 Standards...................................................................................................................................485

5.1.1 Standards...................................................................................................................................485

5.2 Product description ....................................................................................................................486

5.2.1 Introduction ................................................................................................................................486

5.2.2 Versions .....................................................................................................................................487

5.2.3 Applications................................................................................................................................488

5.2.4 3RU21 thermal overload relays .................................................................................................490

5.2.5 3RB30/3RB31 solid-state overload relays.................................................................................491

5.3 Product combinations ................................................................................................................493

5.4 Functions....................................................................................................................................494

5.4.1 Protection against overload, phase failure, and phase asymmetry...........................................494

5.4.1.1 Functional principle ....................................................................................................................494

5.4.1.2 Time-delayed overload release..................................................................................................495

5.4.1.3 Tripping classes .........................................................................................................................495

5.4.1.4 Tripping characteristics ..............................................................................................................496

5.4.2 Ground-fault protection (3RB31 only) ........................................................................................499

5.4.3 Auxiliary contacts .......................................................................................................................500

5.4.4 Indication of the operating state.................................................................................................501

5.4.5 Self-monitoring (3RB30/3RB31 only).........................................................................................501

5.4.6 Additional functions....................................................................................................................502

5.5 Configuration..............................................................................................................................503

5.5.1 Overload relays in motor feeders...............................................................................................503

5.5.1.1 Overload relays in motor feeders...............................................................................................503

5.5.1.2 Normal and heavy-duty starting.................................................................................................504

5.5.1.3 Contactor assembly for star-delta (wye-delta) start...................................................................505

5.5.1.4 Operation with frequency converters .........................................................................................505

5.5.2 Short-circuit protection ...............................................................................................................506

5.5.3 Protecting explosion-protected motors ......................................................................................506

5.5.4 Application environment.............................................................................................................506

5.6 Mounting ....................................................................................................................................508

5.6.1 Mounting options........................................................................................................................508

5.6.2 Minimum clearances and mounting position..............................................................................508

5.6.3 Mounting/Disassembly...............................................................................................................509

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SIRIUS Innovations

14 System Manual, 01/2011, A8E56203870002-03

5.7 Connection ................................................................................................................................ 513

5.7.1 Connection of 3RU21 overload relay........................................................................................ 514

5.7.2 Connection of 3RB30/3RB31 overload relays .......................................................................... 515

5.8 Operation................................................................................................................................... 516

5.8.1 Setting the current..................................................................................................................... 516

5.8.2 Setting the tripping class/ground-fault detection (3RB31) ........................................................ 517

5.8.3 RESET after release ................................................................................................................. 517

5.8.4 TEST function ........................................................................................................................... 520

5.8.5 Response of the auxiliary contacts ........................................................................................... 522

5.9 Accessories............................................................................................................................... 523

5.9.1 Accessories............................................................................................................................... 523

5.9.2 Terminal support for stand-alone assembly.............................................................................. 524

5.9.2.1 Description ................................................................................................................................ 524

5.9.2.2 Mounting/Disassembly.............................................................................................................. 524

5.9.3 Mechanical remote RESET (release slide)............................................................................... 527

5.9.3.1 Description ................................................................................................................................ 527

5.9.3.2 Mounting/Disassembly.............................................................................................................. 527

5.9.4 Mechanical remote RESET (cable release).............................................................................. 529

5.9.4.1 Description ................................................................................................................................ 529

5.9.4.2 Mounting/Disassembly.............................................................................................................. 530

5.9.5 Module for electrical remote RESET (3RU21 only) .................................................................. 531

5.9.5.1 Description ................................................................................................................................ 531

5.9.5.2 Connecting the remote RESET................................................................................................. 531

5.9.5.3 Mounting/Disassembly.............................................................................................................. 532

5.9.6 Sealable cover .......................................................................................................................... 533

5.9.6.1 Description ................................................................................................................................ 533

5.9.6.2 Mounting.................................................................................................................................... 533

5.9.7 Covers for ring cable lug connections....................................................................................... 535

5.9.7.1 Description ................................................................................................................................ 535

5.10 Technical data........................................................................................................................... 536

5.10.1 Performance features................................................................................................................ 536

5.10.1.1 General data ............................................................................................................................. 536

5.10.1.2 Protection functions - overview ................................................................................................. 536

5.10.1.3 Equipment ................................................................................................................................. 537

5.10.1.4 Configuration of load feeders.................................................................................................... 537

5.10.1.5 Features of overload relays....................................................................................................... 538

5.10.2 3RU21 ....................................................................................................................................... 539

5.10.2.1 General technical data .............................................................................................................. 539

5.10.2.2 Main circuit ................................................................................................................................ 540

5.10.2.3 Conductor cross-sections main circuit ...................................................................................... 541

5.10.2.4 Auxiliary circuit .......................................................................................................................... 543

5.10.2.5 Conductor cross sections, auxiliary circuit................................................................................ 544

5.10.3 3RB30/3RB31 ........................................................................................................................... 546

5.10.3.1 General technical data .............................................................................................................. 546

5.10.3.2 Main circuit ................................................................................................................................ 548

5.10.3.3 Conductor cross-sections main circuit ...................................................................................... 549

5.10.3.4 Auxiliary circuit .......................................................................................................................... 550

5.10.3.5 Conductor cross sections, auxiliary circuit................................................................................ 551

5.11 Dimension drawings (dimensions in mm) ................................................................................. 552

5.11.1 Dimension drawings for 3RU21 thermal overload relays.......................................................... 552

5.11.2 Dimension drawings for 3RB30/3RB31 solid-state overload relays ......................................... 556

5.12 Circuit diagrams ........................................................................................................................ 559

Table of contents

SIRIUS Innovations

System Manual, 01/2011, A8E56203870002-03 15

6 SIRIUS 3RA21/22 load feeders ............................................................................................................. 563

6.1 Standards...................................................................................................................................563

6.2 Product description ....................................................................................................................564

6.2.1 Overview ....................................................................................................................................564

6.2.2 Device versions..........................................................................................................................564

6.2.2.1 Pre-assembled complete devices..............................................................................................566

6.2.2.2 Self-assembled load feeders .....................................................................................................567

6.2.3 Applications................................................................................................................................568

6.2.4 Application environment.............................................................................................................568

6.3 Product combinations ................................................................................................................569

6.4 Functions....................................................................................................................................570

6.5 Configuration..............................................................................................................................571

6.6 Mounting ....................................................................................................................................572

6.6.1 Installation guidelines.................................................................................................................572

6.6.1.1 Minimum clearances (400 V AC) ...............................................................................................572

6.6.2 Mounting and disassembling load feeders ................................................................................576

6.6.2.1 Overview ....................................................................................................................................576

6.6.2.2 Load feeder with screw-type connection system.......................................................................577

6.6.2.3 Load feeder with spring-loaded connection system ..................................................................579

6.6.2.4 Load feeder with hybrid connection ...........................................................................................589

6.6.3 Mounting and disassembling the assembly types .....................................................................593

6.6.3.1 On DIN rail without DIN rail adapter ..........................................................................................593

6.6.3.2 On DIN rail with DIN rail adapter................................................................................................594

6.6.3.3 On busbar system......................................................................................................................598

6.6.3.4 Wall mounting ............................................................................................................................605

6.7 Connection.................................................................................................................................608

6.8 Operation ...................................................................................................................................608

6.9 Accessories................................................................................................................................609

6.9.1 Overview ....................................................................................................................................609

6.9.2 Accessories for starter combinations.........................................................................................610

6.9.3 Link modules..............................................................................................................................611

6.9.4 Accessories for DIN rail mounting..............................................................................................614

6.9.5 Accessories for busbar mounting...............................................................................................615

6.10 Technical data............................................................................................................................616

6.10.1 General data ..............................................................................................................................616

6.10.2 Conductor cross-sections - main circuit.....................................................................................619

6.10.3 Conductor cross sections - auxiliary circuit................................................................................621

6.11 Dimension drawings (dimensions in mm) ..................................................................................623

6.12 Circuit diagrams .........................................................................................................................637

Table of contents

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16 System Manual, 01/2011, A8E56203870002-03

7 SIRIUS 3RA28 function modules for mounting on 3RT2 contactors ...................................................... 641

7.1 Standards.................................................................................................................................. 641

7.2 Product description ................................................................................................................... 642

7.2.1 Device versions......................................................................................................................... 643

7.2.2 Performance features................................................................................................................ 645

7.2.3 Applications............................................................................................................................... 646

7.2.3.1 Function modules for direct-on-line start................................................................................... 646

7.2.3.2 Function modules for star-delta (wye-delta) start ..................................................................... 647

7.2.4 3RA28 function modules........................................................................................................... 649

7.3 Product combinations................................................................................................................ 650

7.3.1 Product combinations................................................................................................................ 650

7.4 Functions................................................................................................................................... 651

7.4.1 Overvoltage protection.............................................................................................................. 651

7.4.2 Time-delayed switching of contactors....................................................................................... 651

7.4.2.1 Response delay ........................................................................................................................ 651

7.4.2.2 OFF-delay with auxiliary voltage............................................................................................... 653

7.4.2.3 OFF-delay without auxiliary voltage.......................................................................................... 654

7.4.2.4 Star-delta (wye-delta) function .................................................................................................. 655

7.5 Configuration............................................................................................................................. 656

7.5.1 Configuration............................................................................................................................. 656

7.6 Mounting.................................................................................................................................... 660

7.6.1 Mounting instructions ................................................................................................................ 660

7.6.2 Minimum clearances and mounting position............................................................................. 660

7.6.3 Mounting.................................................................................................................................... 660

7.6.3.1 Function modules for direct-on-line start (solid-state timing relay with semiconductor

output/solid-state time-delay auxiliary switch)........................................................................... 660

7.6.3.2 Function module for star-delta (wye-delta) start .......................................................................662

7.6.4 Disassembly.............................................................................................................................. 665

7.6.4.1 Function modules for direct-on-line start (solid-state timing relay with semiconductor

output/solid-state time-delay auxiliary switch)........................................................................... 665

7.6.4.2 Function module for star-delta (wye-delta) start .......................................................................666

7.6.5 Replacing the removable terminal ............................................................................................ 668

7.7 Connection ................................................................................................................................ 669

7.7.1 Connecting the function modules for direct-on-line start .......................................................... 669

7.7.1.1 Connecting the solid-state timing relay with semiconductor output.......................................... 669

7.7.1.2 Connecting the solid-state time-delay auxiliary switch ............................................................. 671

7.7.2 Connecting the function module for star-delta (wye-delta) start ............................................... 672

7.8 Operation................................................................................................................................... 673

7.8.1 Setting the times ....................................................................................................................... 673

7.9 Accessories............................................................................................................................... 674

7.9.1 Sealable cover cap.................................................................................................................... 674

7.10 Technical data........................................................................................................................... 675

7.11 Dimension drawings.................................................................................................................. 677

7.11.1 Solid-state timing relays with semiconductor output and solid-state time-delay auxiliary

switches..................................................................................................................................... 677

7.11.2 Star-delta (wye-delta) modules ................................................................................................. 678

7.12 Circuit diagrams ........................................................................................................................ 679

7.12.1 Internal circuit diagrams ............................................................................................................ 680

7.12.2 Example circuit diagrams.......................................................................................................... 681

Table of contents

SIRIUS Innovations

System Manual, 01/2011, A8E56203870002-03 17

8 SIRIUS 3RR2 current monitoring relays ................................................................................................ 683

8.1 Standards...................................................................................................................................683

8.1.1 Standards...................................................................................................................................683

8.2 Product description ....................................................................................................................684

8.2.1 Introduction ................................................................................................................................684

8.2.2 Versions .....................................................................................................................................685

8.2.3 Applications................................................................................................................................685

8.2.4 The advantages of current monitoring relays ............................................................................686

8.2.5 3RR214.-.A.30 Basic analog setting current monitoring relay...................................................687

8.2.6 3RR224.-.F.30 Standard digital setting current monitoring relay...............................................688

8.3 Product combinations ................................................................................................................689

8.4 Functions....................................................................................................................................690

8.4.1 Functions and parameters .........................................................................................................690

8.4.2 Function charts for Basic analog setting current monitoring relay.............................................692

8.4.3 Function charts for Standard digital setting current monitoring relay ........................................693

8.5 Configuration..............................................................................................................................695

8.5.1 Current monitoring relay application areas ................................................................................695

8.5.2 Fault detection ...........................................................................................................................695

8.5.2.1 Wear detection...........................................................................................................................696

8.5.2.2 Process monitoring ....................................................................................................................696

8.5.2.3 Overload detection.....................................................................................................................696

8.5.2.4 Detection of load shedding ........................................................................................................696

8.5.2.5 Cable break and phase failure...................................................................................................697

8.5.2.6 Rotating field detection with motors...........................................................................................697

8.5.2.7 Motor protection in the case of special applications ..................................................................697

8.5.3 Application environment.............................................................................................................698

8.6 Mounting ....................................................................................................................................699

8.6.1 Mounting options........................................................................................................................699

8.6.2 Minimum clearances and mounting positions............................................................................699

8.6.3 Mounting/Disassembly...............................................................................................................699

8.7 Connection.................................................................................................................................702

8.7.1 3RR21 Basic analog setting current monitoring relay ...............................................................702

8.7.2 3RR22 Standard digital setting current monitoring relay ...........................................................703

8.8 Operation ...................................................................................................................................704

8.8.1 3RR21 Basic analog setting current monitoring relay ...............................................................704

8.8.1.1 Parameters.................................................................................................................................704

8.8.1.2 Lower threshold value................................................................................................................705

8.8.1.3 Upper threshold value................................................................................................................706

8.8.1.4 ON-delay time ............................................................................................................................707

8.8.1.5 Tripping delay time.....................................................................................................................708

8.8.1.6 Memory ......................................................................................................................................709

8.8.1.7 Diagnostics with LED .................................................................................................................710

8.8.2 3RR22 Standard digital setting current monitoring relay ...........................................................711

8.8.2.1 Parameters.................................................................................................................................711

8.8.2.2 Switching menus (possible settings are SET and RUN) ...........................................................713

8.8.2.3 Settings in the "RUN" menu.......................................................................................................716

8.8.2.4 Settings in the "SET" menu........................................................................................................718

8.8.2.5 Diagnostics in the "RUN" menu .................................................................................................727

Table of contents

SIRIUS Innovations

18 System Manual, 01/2011, A8E56203870002-03

8.9 Accessories............................................................................................................................... 729

8.9.1 Accessories............................................................................................................................... 729

8.9.2 Terminal support for stand-alone assembly.............................................................................. 729

8.9.2.1 Description ................................................................................................................................ 729

8.9.2.2 Mounting.................................................................................................................................... 730

8.9.3 Sealable cover .......................................................................................................................... 732

8.9.3.1 Description ................................................................................................................................ 732

8.9.3.2 Mounting.................................................................................................................................... 732

8.10 Technical data........................................................................................................................... 733

8.10.1 Performance features of current monitoring relays................................................................... 733

8.10.1.1 General data ............................................................................................................................. 733

8.10.1.2 Monitoring functions .................................................................................................................. 734

8.10.1.3 Equipment ................................................................................................................................. 735

8.10.1.4 Configuration of load feeders.................................................................................................... 736

8.10.1.5 Features of current monitoring relays ....................................................................................... 737

8.10.1.6 Combinations with 3RT20 contactor ......................................................................................... 737

8.10.2 3RR21 Basic analog setting current monitoring relay............................................................... 738

8.10.2.1 General technical data .............................................................................................................. 738

8.10.2.2 Main circuit ................................................................................................................................ 740

8.10.2.3 Connection for main circuit........................................................................................................ 741

8.10.2.4 Auxiliary circuit .......................................................................................................................... 742

8.10.2.5 Connecting the auxiliary circuit ................................................................................................. 743

8.10.2.6 Short-circuit protection .............................................................................................................. 743

8.10.3 3RR22 Standard digital setting current monitoring relay .......................................................... 744

8.10.3.1 General technical data .............................................................................................................. 744

8.10.3.2 Main circuit ................................................................................................................................ 746

8.10.3.3 Conductor cross-sections main circuit ...................................................................................... 747

8.10.3.4 Auxiliary circuit .......................................................................................................................... 748

8.10.3.5 Conductor cross sections, auxiliary circuit................................................................................ 749

8.10.3.6 Short-circuit protection .............................................................................................................. 749

8.11 Dimension drawings (dimensions in mm) ................................................................................. 750

8.11.1 Dimension drawings for 3RR21 Basic analog setting current monitoring relay........................ 750

8.11.2 Dimension drawings for 3RR22 Standard digital setting current monitoring relay ................... 752

8.12 Circuit diagrams ........................................................................................................................ 754

A Appendix A ............................................................................................................................................ 757

A.1 Types of coordination................................................................................................................ 757

A.2 More information ....................................................................................................................... 758

A.3 Correction sheet........................................................................................................................ 759

Glossary ................................................................................................................................................ 761

Index...................................................................................................................................................... 775

SIRIUS Innovations

System Manual, 01/2011, A8E56203870002-03 19

System overview 1

1.1 Introduction

1.1.1 Modular system for SIRIUS

System is everything: The SIRIUS modular system for the control cabinet

Siemens is one of the most important manufacturers of switching devices, whose product

range extends from devices that switch just a few milliamps to motor starter protectors for

power distribution. The process of configuring control cabinets must be quick, easy, flexible,

and must enable you to create space-saving solutions.

This is exactly what Siemens offers with its unique SIRIUS modular system. This system

offers all the functions and devices you will need for switching, starting, protecting, and

monitoring motors and systems. In other words, it provides a modular range of standard

components, which are perfectly matched to one another, can be combined really easily, and

use the same accessories. That's how easy controls and distribution can be.

Continuous further development and constant innovations ensure that, with SIRIUS, you are

ideally equipped to meet the challenges of today and tomorrow, and can benefit from cost-

effective solutions. All the components that make up the SIRIUS modular system are

characterized by a space-saving design and a high degree of flexibility. Configuration,

installation, wiring, and maintenance work are all extremely quick and easy to perform.

In further developing these products, a great deal of emphasis has consistently been placed

on meeting or even exceeding requirements in terms of essential performance features,

electrical and mechanical durability, dimensions, and ease of mounting and maintenance.

Environmentally-friendly and recyclable materials have been developed and used in the

system to reflect the ecological awareness that has grown at a quite incredible rate over the

last decade in particular. In the field of low-voltage switching devices, this has resulted in the

creation of modern industrial switching devices which fulfill all requirements with regard to

environmental compatibility.

Building on decades of experience, a totally new generation of devices for performing

switching, starting, protecting, and monitoring functions was created for the large and ever

growing number of motorized operating mechanism in the range up to 18.5 kW: SIRIUS

Innovations.

These new SIRIUS devices meet all requirements that have arisen in the field and can be

used as individual devices, as modules for complete load feeders, or installed in low-voltage

distribution boards or low-voltage switchgear. So no matter whether you want to configure

load feeders with motor starter protectors or overload relays, contactors, or soft starters,

SIRIUS has just the product you will need for any application.

System overview

1.1 Introduction

SIRIUS Innovations

20 System Manual, 01/2011, A8E56203870002-03

1.1.2 SIRIUS Innovations

SIRIUS stands for innovation

Siemens is constantly developing its product portfolio to enable it to meet the demands of

industry, not only today, but in the future too. As part of this process, Siemens gathers

customer feedback on an ongoing basis and considers it in conjunction with the global trends

of tomorrow.

This manual underlines Siemens' claim to be a trendsetting company which offers you the

very best products for switching, starting, protecting, and monitoring your motors and

systems.

Figure 1-1 Innovations in the SIRIUS modular system

When coming up with these innovations for the SIRIUS modular system, particular

importance was placed on reducing the amount of wiring needed, saving space, reducing the

number of versions available, and providing operational reliability.

Simple and straightforward connection

The options for connecting to the higher-level control have now also been further improved:

The SIRIUS modular system now not only features the AS-Interface, but also the IO-Link,

which has been standardized as well. This ensures that switching devices can benefit from

optimum interaction with our SIMATIC automation system and also with third-party controls.

The connection to the automation level is implemented via function modules, which are

plugged onto contactors. However, these function modules are also available in a version for

traditional parallel wiring, as well as in versions featuring AS-i or IO-Link interfaces. This

simple version just contains the logic for performing the star-delta (wye-delta) functions of a

feeder, for example. There is no longer any need to carry out laborious control circuit wiring

work. The star-delta (wye-delta) times are set directly on the function module; all necessary

interlocks are already integrated therein. The smaller width is not only due to the higher

performance capability of the new devices, but also to the fact that the timing relay, for

example, which used to be connected separately, has been done away with completely.

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