Siemens SIRIUS 3RT User guide

SIRIUS Innovations
System Manual •01/2011
Industrial Controls
Answers for industry.

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SIRIUS Innovations
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Industrial controls
SIRIUS Innovations
System Manual
01/2011
A8E56203870002-03
System overview 1
SIRIUS 3RT2
contactors/contactor
assemblies
2
SIRIUS 3RF34 solid-state
switching devices
3
SIRIUS 3RV2 motor starter
protectors
4
SIRIUS 3RU2/3RB3
overload relays
5
SIRIUS 3RA21/22 load
feeders
6
SIRIUS 3RA28 function
modules for mounting on
3RT2 contactors
7
SIRIUS 3RR2 current
monitoring relays
8
Appendix A
A

Legal information
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
Copyright © Siemens AG 2009.
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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6 System Manual, 01/2011, A8E56203870002-03
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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System Manual, 01/2011, A8E56203870002-03 7
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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8 System Manual, 01/2011, A8E56203870002-03
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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System Manual, 01/2011, A8E56203870002-03 9
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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10 System Manual, 01/2011, A8E56203870002-03
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