Siemens 6SL3845-7NN46-7AA2 Operating instructions

www.siemens.com/drives
Medium-Voltage Drive
SINAMICS SM150
Type 6SL3845-7NN46-7AA2
Operating Instructions
Installation Instructions
Edition 10/2019
This documentation pertains to
EXAMPLE

28.10.2019 13:45
V32.00

Medium-Voltage Drive
SINAMICS SM150
Type 6SL3845-7NN46-7AA2
Operating Instructions
Installation Instructions
This documentation pertains to
EXAMPLE
Edition 10/2019
Introduction 1
Safety instructions 2
Description 3
Preparations for use 4
Installation 5
Electrical connection 6
Start-up 7
Operation 8
Maintenance 9
Spare parts 10
Disposal 11
Service & Support A
Technical data and drawings B
Checklists and forms C

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
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
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, 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 complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of 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
Large Drives Applications
Vogelweiherstr. 1-15
90441 NÜRNBERG
GERMANY
Document order number: 0009990025-038457
Ⓟ 10/2019 Subject to change
Copyright © Siemens AG 2018 - 2019.
All rights reserved

Table of contents
1 Introduction.................................................................................................................................................13
1.1 About these instructions.........................................................................................................13
2 Safety instructions ......................................................................................................................................15
2.1 Warning symbol on the device ...............................................................................................15
2.2 Qualified personnel ................................................................................................................15
2.3 The 5 safety rules...................................................................................................................15
2.4 Safe handling .........................................................................................................................16
2.5 Electromagnetic fields in electrical power engineering installations ......................................19
2.6 Components that can be destroyed by electrostatic discharge (ESD)...................................19
2.7 Information for nominated persons in control of an electrical installation...............................21
2.7.1 Proper usage..........................................................................................................................21
2.7.2 Grounding concept.................................................................................................................22
2.7.3 Installation site safety.............................................................................................................22
2.7.4 Measures for operator protection in electromagnetic fields ...................................................23
2.8 Residual risks.........................................................................................................................23
2.9 Security information ...............................................................................................................25
3 Description..................................................................................................................................................27
3.1 Applications............................................................................................................................27
3.2 Safety concept .......................................................................................................................27
3.2.1 Safety components and functions ..........................................................................................27
3.2.2 External safety components...................................................................................................28
3.2.3 Protection and monitoring functions of internal components .................................................28
3.2.4 Protection and monitoring functions for external components ...............................................29
3.3 Design ....................................................................................................................................29
3.3.1 Components...........................................................................................................................29
3.3.2 Design of the Active Line Module and Motor Module.............................................................31
3.3.3 Design of the Motor Module ...................................................................................................31
3.3.4 Gating.....................................................................................................................................32
3.4 Operating principle .................................................................................................................32
3.5 Description of the components...............................................................................................33
3.5.1 SIMOTION Control Unit .........................................................................................................33
3.5.2 Power Stack Adapter .............................................................................................................34
3.5.3 Terminal Modules...................................................................................................................35
3.5.4 Voltage Sensing Module ........................................................................................................36
3.5.5 SMC30 Sensor Module ..........................................................................................................36
3.5.6 Precharging............................................................................................................................36
3.5.7 Electromechanical door interlock system...............................................................................37
3.5.8 Make-proof grounding switch .................................................................................................37
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3.5.9 Circuit-breaker (provided by the customer)............................................................................37
3.5.10 Converter transformer ............................................................................................................38
3.5.11 Actual value acquisition..........................................................................................................38
3.5.12 Common power supply ..........................................................................................................39
3.5.12.1 Field of application .................................................................................................................39
3.5.12.2 Design ....................................................................................................................................39
3.5.12.3 Connections ...........................................................................................................................40
3.5.13 DM10 diagnostics module......................................................................................................41
3.5.13.1 Functions................................................................................................................................41
3.5.13.2 Signal processing...................................................................................................................42
3.5.13.3 Voltage monitoring .................................................................................................................43
3.5.14 Re-cooling unit ......................................................................................................................44
3.5.14.1 Re-cooling unit requirements .................................................................................................44
3.5.14.2 Operating principle of the re-cooling unit ...............................................................................44
3.5.14.3 The internal deionized water circuit........................................................................................45
3.5.15 Customer terminal strips ........................................................................................................45
3.6 Description of options.............................................................................................................46
3.6.1 NAMUR terminal strip (option B00)........................................................................................46
3.6.2 Isolation amplifiers for optional analog inputs (option E86)....................................................46
3.6.3 Isolation amplifiers for optional analog outputs (option E87) .................................................46
3.6.4 Additional Terminal Module TM31 (option G61) ....................................................................47
3.6.5 Additional Terminal Module TM15 (option G63) ....................................................................47
3.6.6 PADU8 diagnosis module (option G66) .................................................................................48
3.6.7 Pulse distributor for splitting speed encoder signal (option G70)...........................................48
3.6.8 Optical bus terminal (OBT) for PROFIBUS (option G71) .......................................................48
3.6.9 Indicator lamps in the cabinet door (option K20)....................................................................48
3.6.10 Display instruments in the cabinet door for voltage, current, speed, and output plus
indicator lamps (option K21) ..................................................................................................49
3.6.11 Safe Torque Off......................................................................................................................49
3.6.11.1 Safety information regarding the "Safe Torque Off / safe standstill" function ........................50
3.6.12 dv/dt filter (option L10) ...........................................................................................................52
3.6.13 Motor-side grounding switch (option L49) ..............................................................................53
3.6.14 Cabinet illumination and service socket in closed-loop control unit (option L50) ...................54
3.6.15 Disconnector at the drive output (option L51) ........................................................................54
3.6.16 Circuit breaker at the drive output (option L52)......................................................................54
3.6.17 EMERGENCY STOP Category 1 (option L60) ......................................................................54
3.6.18 Safety locking system (option M10) .......................................................................................55
3.6.19 Power cable connection at the drive input from above (option M13) .....................................55
3.6.20 Signal and control cable (max. 2.5 mm²) (option M32) ..........................................................55
3.6.21 IP54 degree of protection (option M54)..................................................................................56
3.6.22 Redundant fan in the power unit (option M61) .......................................................................56
3.6.23 Suitability for marine use (option M66)...................................................................................56
3.6.24 Capacitor Modules to increase the DC-link capacitance (option N08)...................................56
3.6.25 Controlled outgoing circuit for auxiliary equipment 400 V 3 AC (option N30) .......................57
3.6.26 Sine-wave filter (option Y15) ..................................................................................................57
4 Preparations for use ...................................................................................................................................59
4.1 Requirements for installation location ....................................................................................59
4.2 Inspections when receiving the delivery.................................................................................59
4.2.1 Scope of delivery....................................................................................................................59
4.2.2 Checking shock and tilt indicators..........................................................................................60
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4.2.3 Checking the load handling attachments ...............................................................................61
4.3 Transportation ........................................................................................................................62
4.3.1 Transport markings ................................................................................................................62
4.3.2 Transport requirements..........................................................................................................62
4.3.3 Observe center of gravity .......................................................................................................63
4.3.4 Transport with a fork-lift truck.................................................................................................63
4.3.5 Transport with a crane ...........................................................................................................64
4.3.6 Using lifting rods.....................................................................................................................64
4.3.7 Transporting transportation units packed in boxes ................................................................66
4.4 Unpacking ..............................................................................................................................67
4.4.1 Removing the packaging........................................................................................................67
4.4.2 Removing load securing devices ...........................................................................................68
4.4.3 Lifting the cabinet off the transport pallet ...............................................................................68
4.4.4 Opening doors in preparation for use.....................................................................................69
4.4.5 Checking the shock and tilt indicators inside the cabinet.......................................................70
4.5 Storage...................................................................................................................................70
4.5.1 Emptying the drive .................................................................................................................70
4.5.2 Storing a device .....................................................................................................................71
5 Installation ..................................................................................................................................................73
5.1 Safety instructions for assembly ............................................................................................73
5.2 Tools required ........................................................................................................................74
5.3 Preparations...........................................................................................................................74
5.3.1 Remove the rear panel...........................................................................................................74
5.3.2 Mounting the side panels .......................................................................................................74
5.4 Screwing the transport units together ....................................................................................76
5.5 Connect the capacitor cabinet with the power section ...........................................................77
5.6 Connecting to the foundation .................................................................................................78
5.7 Connecting the grounding bars ..............................................................................................79
5.8 Connecting the DC bus ..........................................................................................................80
5.8.1 Preparation.............................................................................................................................80
5.8.2 Connecting the DC bus ..........................................................................................................81
5.9 Connecting the interface terminals.........................................................................................86
5.10 Connecting the water circuits .................................................................................................86
6 Electrical connection...................................................................................................................................87
6.1 Safety instructions for electrical connections .........................................................................87
6.2 Electromagnetic compatibility.................................................................................................89
6.3 Potential concept....................................................................................................................92
6.4 Electrical requirements...........................................................................................................92
6.5 Connection .............................................................................................................................93
6.5.1 Manually unlocking power-unit doors.....................................................................................93
6.5.2 Connecting ground.................................................................................................................93
6.5.3 Preparations for connecting the power cables .......................................................................94
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6.5.4 Connecting power cables.......................................................................................................94
6.5.5 Connect the power cable to the motor and the supply system ..............................................95
6.5.6 Connect the auxiliary voltage .................................................................................................97
6.5.7 Connecting the encoder .........................................................................................................97
6.5.8 Interconnecting optional connections.....................................................................................98
6.5.9 Connecting the re-cooling unit to the drive.............................................................................98
6.5.10 Fastening the cable ducts with cable ties...............................................................................99
6.6 Mounting the rear panel .........................................................................................................99
7 Start-up ....................................................................................................................................................101
8 Operation..................................................................................................................................................103
8.1 Safety instructions for operation...........................................................................................103
8.2 Operating the drive...............................................................................................................104
8.3 Touch screen operator panel ...............................................................................................105
8.4 Parameter ............................................................................................................................106
8.4.1 Parameters...........................................................................................................................106
8.4.2 Parameter types...................................................................................................................106
8.5 Functions..............................................................................................................................107
8.5.1 Setpoint channel and closed-loop control ............................................................................107
8.5.1.1 Setpoint channel ..................................................................................................................107
8.5.1.2 Vector control .......................................................................................................................110
8.5.1.3 U/f control.............................................................................................................................113
8.5.2 Analog and digital inputs/outputs .........................................................................................114
8.5.2.1 Analog outputs .....................................................................................................................114
8.5.2.2 Additional settings for analog outputs ..................................................................................116
8.5.2.3 Digital inputs/outputs............................................................................................................119
8.5.2.4 Digital outputs ......................................................................................................................121
8.5.3 Monitoring functions and protective functions ......................................................................121
8.5.3.1 Insulation monitoring ............................................................................................................122
8.5.3.2 Tripping of the circuit-breaker in case of undervoltage ........................................................123
8.5.3.3 DC-link short-circuiter...........................................................................................................123
8.5.3.4 Protection responses in an emergency................................................................................124
8.5.3.5 Vdc-max closed-loop control................................................................................................124
8.5.3.6 Speed monitoring with incremental encoder ........................................................................126
8.5.3.7 Controlled stop, EMERGENCY STOP category 1 ...............................................................127
8.6 Fault and system messages ................................................................................................127
8.6.1 External alarms and faults....................................................................................................127
8.6.2 Message from the grounding switch ....................................................................................127
8.6.3 Diagnosis .............................................................................................................................128
8.6.3.1 Indicating and rectifying faults..............................................................................................128
8.6.3.2 Diagnostics via LEDs ...........................................................................................................129
8.6.3.3 Diagnostics via parameters..................................................................................................130
9 Maintenance .............................................................................................................................................135
9.1 Safety instructions for maintenance .....................................................................................135
9.2 Grounding the system ..........................................................................................................137
9.2.1 Grounding with a grounding device......................................................................................137
9.2.2 Grounding using a make-proof grounding switch.................................................................139
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9.3 Opening the doors................................................................................................................140
9.3.1 Opening the power unit doors for maintenance work...........................................................140
9.3.2 Manually unlocking power unit doors ...................................................................................141
9.3.3 Secure locking system (option M10) ....................................................................................142
9.4 Inspection and maintenance ................................................................................................143
9.4.1 Inspection.............................................................................................................................143
9.4.2 Checklist...............................................................................................................................143
9.4.3 Cleaning ...............................................................................................................................144
9.4.3.1 Cleaning aluminum parts .....................................................................................................145
9.4.4 Visual inspections ................................................................................................................145
9.4.4.1 Equipment for visual inspections..........................................................................................145
9.4.4.2 Checking hoisting solenoids and security bolts....................................................................145
9.4.4.3 Checking the isolating clearances........................................................................................145
9.4.4.4 Checking the capacitor release............................................................................................146
9.4.4.5 Checking the cable and screw terminals..............................................................................146
9.4.4.6 Checking the plug connections. ...........................................................................................146
9.4.5 Replacing filter mats.............................................................................................................147
9.4.6 Replacing the filter mats in the roof assembly .....................................................................147
9.4.7 Maintaining the fan...............................................................................................................148
9.5 Repair...................................................................................................................................149
9.5.1 Torques ................................................................................................................................149
9.5.2 Replacing the AVT combination module ..............................................................................151
9.5.3 Replacing the operator panel ...............................................................................................151
9.5.3.1 Replacing the operator panel ...............................................................................................151
9.5.4 Replacing the CompactFlash card .......................................................................................153
9.5.5 Replacing the phase module or diode module.....................................................................154
9.5.5.1 Attaching the changing device to the stacker.......................................................................154
9.5.5.2 Replacing the phase module................................................................................................155
9.5.6 Replacing the Power Stack Adapter ....................................................................................163
9.5.7 Replace the sponge for the leak detector ............................................................................164
9.5.8 Replacing fuses....................................................................................................................166
9.5.9 Replacing the current transformer........................................................................................166
9.5.10 Door interlock system...........................................................................................................166
9.5.11 Replacing the precharging transformer................................................................................167
9.5.12 Replacing the precharging rectifier ......................................................................................168
10 Spare parts ...............................................................................................................................................169
11 Disposal....................................................................................................................................................171
11.1 Disposing of packaging material ..........................................................................................171
11.2 Removing device components and old devices ...................................................................171
A Service & Support.....................................................................................................................................173
B Technical data and drawings....................................................................................................................175
B.1 Technical specifications .......................................................................................................175
B.1.1 Standards and regulations ...................................................................................................175
C Checklists and forms ................................................................................................................................177
C.1 Mechanical installation: Checklist ........................................................................................177
C.2 Checklist for electrical installation ........................................................................................178
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Index.........................................................................................................................................................183
Tables
Table 3-1 Deionized water requirements.....................................................................................................45
Table 3-2 Max. permissible cable lengths ...................................................................................................57
Table 6-1 Dimensioning cables ...................................................................................................................92
Table 6-2 Cable cross-sections...................................................................................................................93
Table 6-3 Drive and motor connection terminals.........................................................................................96
Table 8-1 Parameter..................................................................................................................................108
Table 8-2 Parameter..................................................................................................................................109
Table 8-3 Parameter..................................................................................................................................110
Table 8-4 LEDs of the Power Stack Adapters ..........................................................................................129
Table 8-5 LEDs of the DM10 diagnostics module .....................................................................................129
Table 9-1 Tightening torque for screws.....................................................................................................149
Table 9-2 Tightening torques for screw terminals for copper cables without cable lug 1).........................150
Table B-1 Standards and conformity .........................................................................................................175
Figures
Figure 2-1 ESD information ..........................................................................................................................20
Figure 3-1 Design of the power unit..............................................................................................................30
Figure 3-2 Phase module .............................................................................................................................32
Figure 3-3 Overview of PSA interfaces.........................................................................................................35
Figure 3-4 AVT combination module ............................................................................................................39
Figure 3-5 Design when using IGCTs...........................................................................................................39
Figure 3-6 Overview ....................................................................................................................................40
Figure 3-7 Schematic diagram: Printed circuit board of the diagnostics module..........................................41
Figure 3-8 Logical design of the DM10 diagnosis module............................................................................42
Figure 3-9 Circuit diagram option L10 ..........................................................................................................52
Figure 3-10 Connecting the motor to the dv/dt filter .......................................................................................53
Figure 3-11 Connecting the motor to the sine-wave filter...............................................................................58
Figure 4-1 Example of attaching and displaying the shock and tilt indicators ..............................................61
Figure 4-2 Example illustration of centers of gravity.....................................................................................63
Figure 4-3 Lifting bar label............................................................................................................................65
Figure 4-4 Securing the lifting rods...............................................................................................................65
Figure 4-5 Transporting a transportation unit (still in packaging) with a crane .............................................67
Figure 4-6 Example: Label with instructions for opening the doors..............................................................69
Figure 5-1 Connecting the transport units ....................................................................................................75
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Figure 5-2 Connecting the capacitor cabinet and the power section............................................................77
Figure 5-3 Connecting cabinets....................................................................................................................79
Figure 5-4 Storage of link rails with mounting hardware...............................................................................80
Figure 5-5 DC-bus connection points ...........................................................................................................82
Figure 6-1 Shield connection using a clip.....................................................................................................91
Figure 6-2 Bridging shield gaps....................................................................................................................91
Figure 6-3 Potential concept.........................................................................................................................92
Figure 6-4 Grounding lug..............................................................................................................................94
Figure 6-5 Example: Connecting the power cables......................................................................................94
Figure 6-6 Connection of the supply-system power cable............................................................................96
Figure 6-7 Connection example: HTL encoder, bipolar, with reference signal.............................................98
Figure 6-8 Schematic diagram: Fastening the cable ties..............................................................................99
Figure 8-1 Operator panel .........................................................................................................................105
Figure 8-2 Parameter types........................................................................................................................106
Figure 8-3 Switchover conditions................................................................................................................112
Figure 8-4 Operating areas and characteristic curves for the induction motor with drive supply ...............113
Figure 8-5 Example: Setting analog output 0 .............................................................................................116
Figure 8-6 Potential supply of external signals...........................................................................................119
Figure 8-7 Digital signal output to the system I/O.......................................................................................120
Figure 8-8 Networked structures for safe shutdown in an emergency .......................................................124
Figure 9-1 Grounding points.......................................................................................................................137
Figure 9-2 Example: Attaching the grounding spider..................................................................................138
Figure 9-3 Attaching the grounding spider..................................................................................................139
Figure 9-4 Make-proof-grounding switch closed.........................................................................................140
Figure 9-5 Principle of the mechanical door interlock.................................................................................142
Figure 9-6 Components of the secure locking system................................................................................142
Figure 9-7 Example diagram: Replacing filter mats....................................................................................147
Figure 9-8 Changing the filter in the roof assembly....................................................................................148
Figure 9-9 Example of an AVT combination module ..................................................................................151
Figure 9-10 Remove the operator panel.......................................................................................................152
Figure 9-11 Card slots ..................................................................................................................................153
Figure 9-12 Attaching the changing device to the forklift truck.....................................................................155
Figure 9-13 Attaching the changing device to the forklift truck.....................................................................155
Figure 9-14 Lifting solenoid ..........................................................................................................................156
Figure 9-15 Water connection ......................................................................................................................157
Figure 9-16 Fiber-optic conductors and power supply cable........................................................................157
Figure 9-17 Motor current acquisition module ..............................................................................................158
Figure 9-18 Busbar.......................................................................................................................................159
Figure 9-19 Installing the busbars ................................................................................................................159
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Figure 9-20 Insulators of the phase module and lifting lugs .........................................................................160
Figure 9-21 Changing device: roller tracks...................................................................................................160
Figure 9-22 Changing device: joining the roller tracks..................................................................................161
Figure 9-23 Changing device: stop brackets ................................................................................................161
Figure 9-24 Sponge......................................................................................................................................165
Figure 9-25 Replacing the sponge................................................................................................................165
Figure 9-26 Example: Replacing the precharging transformer.....................................................................167
Figure 9-27 Replacing the precharging rectifier............................................................................................168
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Introduction 1
1.1 About these instructions
These Operating Instructions describe the device and provide you with information about
handling it - from the initial shipment up to disposal. Keep these instructions for later use.
Read these Operating Instructions and comply with the information provided in them. In this
way you can ensure safe, problem-free operation and a long service life.
Safety information and handling-related warnings are provided in these Operating Instructions.
For your own safety, the safety of other persons and to avoid material damage, carefully follow
these instructions when carrying out any work.
If you have suggestions for improving the document, please contact our Service Center
(Page 173).
Text format features
You can find the following text format features in these instructions:
1. Handling instructions are always formatted as a numbered list. Always perform the steps in
the order given.
● Lists are formatted as bulleted lists.
– Lists on the second level are hyphenated.
Note
The note provides you with additional information about the product itself, handling the product
- and the relevant documentation.
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Introduction
1.1 About these instructions
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Safety instructions 2
In the individual chapters of this document, you will find safety instructions that must be obeyed
absolutely, for your own safety, to protect other people and to avoid damage to property.
Carefully comply with the following safety instructions when performing all of the activities.
See also
Safety information regarding the "Safe Torque Off / safe standstill" function (Page 50)
2.1 Warning symbol on the device
Please observe the warning symbols attached to the device. The warning symbols have the
following meaning:
Warning symbol Meaning
Warning: Voltage
Warning: Hot surface
General warning symbol: Observe the explanations about the hazard on the
device labels.
For transportation, observe the "transportation markings (Page 62)" on the device packaging.
2.2 Qualified personnel
The product/system described in this documentation may only be operated 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. Because of their training and
experience, qualified personnel can recognize any risks involved with handling these products/
systems and avoid any possible dangers.
2.3 The 5 safety rules
To ensure your own personal safety as well as to avoid material damage, always comply with
the safety-relevant instructions when carrying out any work. Also carefully comply with the 5
safety rules according to EN 50110‑1 "Working in a no-voltage state" in the specified sequence.
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5 safety rules
1. Disconnect the system.
Also disconnect the auxiliary circuits, for example, anti-condensation heating.
2. Secure against reconnection.
3. Verify absence of operating voltage.
4. Ground and short-circuit.
5. Provide protection against adjacent live parts.
To energize the system, apply the measures in reverse order.
2.4 Safe handling
Electric shock from external supplies
Even if the circuit breaker is open, parts of the drive can be under voltage (live) as a result of
the auxiliary voltage at the premagnetization, precharging or demagnetization transformers.
This danger is not limited to the drive, but can also occur with components that are electrically
connected to the drive (e.g. circuit breakers or isolators). Touching live parts can result in death,
serious injury and material damage
● Isolate all components that can feed voltage to the drive before commencing work.
Electric shock due to high voltages in operation
When operating this equipment very high voltages develop. Even after switching off the mains
voltage, or while the connected machine is still turning, high voltages can remain for a
prolonged length of time. High voltages can cause death or serious injury if the safety rules are
not observed or if the equipment is handled incorrectly.
● Operate the device properly.
● Always follow the "The five safety rules (Page 15)" when performing any work.
● Service and maintain the device regularly and correctly.
Electric shock if the grounding switch is defective
A grounding switch is a component that has an associated certain probability of failure. This
means that it is possible that the feedback signal regarding the switching state no longer
matches the actual switching state of the grounding switch. This means that if the power unit
door is open, hazardous voltages could still be present at the active parts of the drive. Touching
the device can result in death or serious injury.
● Check the function of the grounding switch before carrying out any other work at the drive.
● Carefully comply with the 5 safety rules (Page 15).
Safety instructions
2.4 Safe handling
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Danger as a result of inactive safety functions
Inactive safety functions or ones that have not been adapted can result in machine
malfunctions. These malfunctions can result in death or severe injury.
● Before commissioning, carefully comply with the safety information and instructions
provided in Chapters "Safety notes" and "Safe Torque Off / Safe standstill (option K80)
(Page 50)".
● Carry out a safety inspection for functions relevant to safety on the entire system, including
all safety-related components.
● Ensure that the safety functions used in your drives and automation tasks are adjusted and
activated using the appropriate parameterizing.
● Carry out a function test.
● Only put your plant/system into live operation once you have ensured that the functions
relevant to safety are operating correctly.
Electric shock due to induced voltage
Rotating machinery can induce dangerous high voltages and synchronous motors that are not
de-excited immediately can also pose a hazard. If the connection to the motor is not isolated or
grounded, these voltages can also remain. Touching live parts can result in death or serious
injury.
● Before opening the doors, wait until the connected machine has come to a standstill.
Electric shock at DC link capacitors
High voltages are still present at the DC link capacitors even after shutdown. Touching live
parts can result in death or serious injury.
● A label specifies the discharge times of the DC link capacitors. Only open the doors once
these discharge times have elapsed.
● Observe the five safety rules when performing any work.
Electric shock caused by high auxiliary voltages
High auxiliary voltages are still present even after shutdown. Touching live parts can result in
death or serious injury.
● Observe the five safety rules when performing any work.
Danger due to hazardous arcing
Hazards caused by arcing can occur as result of the following factors, for example:
● The input currents are exceeded.
● Incorrectly dimensioned circuit breaker or transformers.
● Incorrectly connected cables or cables that have not been connected.
Safety instructions
2.4 Safe handling
SINAMICS SM150 6SL3845-7NN46-7AA2
Operating Instructions Rev.201910281345 EXAMPLE 17

● Contamination and dirt.
● Tools that have been forgotten, e.g. when mounting and installing the equipment.
Arcing can result in death, serious injury or material damage.
● Make sure that the system is properly dimensioned and that the power cables are correctly
connected. The maximum permissible input currents are listed in the "Technical
specifications".
● Remove contamination and dirt.
● After installation and mounting, carefully check that no objects have been left in the device.
Danger due to live stationary parts, moving or rotating parts
Contact with the parts mentioned can result in death, serious physical injury or damage to
property.
● Observe the instructions regarding installation and operation.
● Always take protective measures before touching any components.
● Do not remove any covers.
Risk of burns due to hot component surfaces
Certain components (e.g. heat sinks and reactors) can become very hot during operation.
These components can remain hot for a long time after operation. Contact can result in serious
injury, such as skin burns.
● After the device has been shut down, do not touch any hot components.
Skin burns when touching the roof panel
Certain components, such as busbars and resistors etc., can become very hot in operation.
Until the heat has been fully dissipated, the roof panel in the front area can still be very hot even
after the device has been shut down.
Touching hot surfaces can cause burns to the skin.
● Do not touch the roof panel even after the device has been shut down.
● Always take the appropriate precautions before touching any parts and components.
Risk of injury at places that are difficult to access
If you do not use appropriate protective equipment when working in places that are difficult to
access you are at risk of injury. For example, sharp edges and splinters can cause injuries to
the head and skin. If you carry out work in the upper section using unsuitable ladders or similar,
you can fall and injure yourself.
● Use appropriate protective equipment, especially a hard hat and gloves.
● Use suitable steps or ladders when working in the upper area.
Safety instructions
2.4 Safe handling
SINAMICS SM150 6SL3845-7NN46-7AA2
18 Operating Instructions Rev.201910281345 EXAMPLE

Eye and skin injuries caused by deionized water
Deionized water is harmful to eyes and skin and can damage surfaces.
● Therefore, use appropriate protective clothing when you carry out any work on the drive.
However, if your eyes or skin do come into contact with deionized water, rinse the affected
area thoroughly with tap water as soon as possible.
● If deionized water leaks out, eliminate the source of the problem and remove the liquid from
the surfaces affected.
Shutdown as a result of an incorrect residual current monitoring device
If you use a residual current monitoring device (RCD), it is possible that the residual current
monitoring device will trip in error (nuisance trip). The converter may be switched off as a result
of the protection device tripping in error.
● To minimize the risk of faulty trips, use a type-B RCD.
2.5 Electromagnetic fields in electrical power engineering installations
Electromagnetic fields are generated during operation of electrical power engineering
installations. Electromagnetic fields can interfere with electronic devices, These devices can
malfunction if electromagnetic fields are present.
Interference with pacemakers
The functioning of cardiac pacemakers could be impaired by electromagnetic fields. Death or
serious physical injury can result.
● It is therefore not permissible for people with pacemakers to stand close to the device.
Data loss
Electromagnetic fields can cause data loss to magnetic or electronic data storage media.
● Therefore, do not carry magnetic or electronic data storage media with you.
Persons responsible for plants and systems can find additional information on electromagnetic
fields under "Information for persons responsible for plants and systems (Page 21)."
2.6 Components that can be destroyed by electrostatic discharge (ESD)
ESD guidelines
Material damage caused by electrostatic discharge.
Electronic components can be destroyed in the event of improper handling, transport, storage,
and shipping.
Pack the electronic components in appropriate ESD packaging; e.g. ESD foam, ESD
packaging bags and ESD transport containers.
Safety instructions
2.6 Components that can be destroyed by electrostatic discharge (ESD)
SINAMICS SM150 6SL3845-7NN46-7AA2
Operating Instructions Rev.201910281345 EXAMPLE 19

To protect your equipment against damage, follow the instructions given below.
● Avoid physical contact with electronic components. If it is essential that you perform work on
these components, you must wear one of the following pieces of protective gear:
– Grounded ESD wrist strap
– ESD shoes or ESD shoe grounding strips if there is also an ESD floor.
● Do not place electronic components close to data terminals, monitors or televisions.
Maintain a minimum clearance to the screen (> 10 cm).
● Electronic components should not be brought into contact with electrically insulating
materials such as plastic foil, plastic parts, insulating table supports or clothing made of
synthetic fibers.
● Bring components into contact only with ESD-compliant materials, e.g. ESD tables, ESD
surfaces, ESD packaging.
● Only carry out measurements on the components if one of the following conditions is met:
– The measuring device is grounded with a protective conductor, for example.
– The measuring head of a floating measuring device has been discharged directly before
the measurement.
The necessary ESD protective measures for the entire working range for electrostatically
sensitive devices are illustrated once again in the following drawings.
Precise instructions for ESD protective measures are specified in the standard
DIN EN 61340‑5‑1.
6HDWLQJSRVLWLRQ6WDQGLQJSRVLWLRQ6WDQGLQJVHDWLQJSRVLWLRQEEDFDIIIIIDFFHGGHG
a = Conductive floor covering 1) b = ESD furniture
c = ESD shoes or ESD shoe grounding strips 2) d = ESD clothing
e = ESD wrist strap f = Cabinet ground connection
1) Only effective in conjunction with ESD shoes or ESD shoe grounding strips
2) Only effective in conjunction with conductive floor covering
Figure 2-1 ESD information
Safety instructions
2.6 Components that can be destroyed by electrostatic discharge (ESD)
SINAMICS SM150 6SL3845-7NN46-7AA2
20 Operating Instructions Rev.201910281345 EXAMPLE