Siemens SINAMICS S120 User manual

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SINAMICS
S120
Power Units in
Booksize C/D-Type Format
Manual
01/2017
6SL3097
-4AC20-0BP1
Preface
Fundamental safety
instructions
1
System overview
2
Motor Modules in booksize
C/D-type format
3
Accessories
4
Motor-side power
components
5
Cabinet design
6
Service and support for
booksize C/D-type
7
Appendix
A

Siemens AG
Division Digital Factory
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number: 6SL3097-4AC20-0BP1
Ⓟ
01/2017 Subject to change
Copyright © Siemens AG 2015 - 2017.
All rights reserved
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.

Power Units in Booksize C/D-Type Format
Manual, 01/2017, 6SL3097-4AC20-0BP1 5
Preface
Preface to the SINAMICS S120 Manual "Booksize C/D-Type Power Units"
Based on the booksize design, SINAMICS S120 booksize C/D-type power units have been
developed for full compatibility with the booksize series
●The "C-type" power unit includes Single Motor Modules from 18 A to 30 A and the Double
Motor Module 2 x 18 A. They can be operated with an overload factor of up to 2
(continuous motion).
●The "D-type" power unit includes Single Motor Modules from 3 A to 30 A and Double
Motor Modules from 2 x 3 to 2 x 18 A. They can be operated with an overload factor of up
to 3 (discontinuous motion).
●The C/D-type Motor Modules can be seamlessly integrated into a SINAMICS S120
booksize drive line-up irrespective of the installed firmware.
Only components from the booksize C/D-type series plus the relevant connection
components are described in this manual.
The documentation relating to conventional power units and accessories, as well as detailed
information about connection systems, protective measures, etc. can be found in the
SINAMICS S120 Manual "Booksize Power Units" (GH2)
SINAMICS documentation
The SINAMICS documentation is organized in the following categories:
●General documentation/catalogs
●User documentation
●Manufacturer/service documentation
Additional information
You can find information on the following topics at the following address
(https://support.industry.siemens.com/cs/de/en/view/108993276):
●Ordering documentation/overview of documentation
●Additional links to download documents
●Using documentation online (find and search in manuals/information)
Please send any questions about the technical documentation (e.g. suggestions for
improvement, corrections) to the following e-mail address
(mailto:[e-mail]).

Preface
Power Units in Booksize C/D-Type Format
6Manual, 01/2017, 6SL3097-4AC20-0BP1
Siemens MySupport/Documentation
At the following address (https://support.industry.siemens.com/My/ww/en/documentation),
you can find information on how to create your own individual documentation based on
Siemens' content, and adapt it for your own machine documentation.
Training
At the following address (http://www.siemens.com/sitrain), you can find information about
SITRAIN (Siemens training on products, systems and solutions for automation and drives).
FAQs
You can find Frequently Asked Questions in the Service&Support pages under Product
Support (https://support.industry.siemens.com/cs/de/en/ps/faq).
SINAMICS
You can find information about SINAMICS at the following address
(http://www.siemens.com/sinamics).
Usage phases and their documents/tools (as an example)
Table 1 Usage phases and the available documents/tools
Usage phase
Document/tool
Orientation
SINAMICS S Sales Documentation
Planning/configuration •SIZER Engineering Tool
•Configuration Manuals, Motors
Deciding/ordering SINAMICS S120 catalogs
•SINAMICS S120 and SIMOTICS (Catalog D 21.4)
•SINAMICS Inverters for Single-Axis Drives and SIMOTICS Motors (Catalog D 31)
•SINUMERIK 840 Equipment for Machine Tools (Catalog NC 62)
Installation/assembly •SINAMICS S120 Manual for Control Units and Additional System Components
•SINAMICS S120 Manual for Booksize Power Units
•SINAMICS S120 Manual for Booksize Power Units C/D Type
•SINAMICS S120 Manual for Chassis Power Units, Air-cooled
•SINAMICS S120 Manual for Chassis Power Units, Liquid-cooled
•SINAMICS S120 Manual for AC Drives
•SINAMICS S120 Manual Combi
•SINAMICS S120M Manual Distributed Drive Technology
•SINAMICS HLA System Manual Hydraulic Drive

Preface
Power Units in Booksize C/D-Type Format
Manual, 01/2017, 6SL3097-4AC20-0BP1 7
Usage phase
Document/tool
Commissioning •STARTER Commissioning Tool
•SINAMICS S120 Getting Started with STARTER
•SINAMICS S120 Commissioning Manual with STARTER
•SINAMICS S120 CANopen Commissioning Manual
•SINAMICS S120 Function Manual Drive Functions
•SINAMICS S120 Safety Integrated Function Manual
•SINAMICS S120/S150 List Manual
•SINAMICS HLA System Manual Hydraulic Drive
•Startdrive commissioning tool1)
•SINAMICS S120 Getting Started with Startdrive2)
•SINAMICS S120 Commissioning Manual with Startdrive1)
Usage/operation •SINAMICS S120 Commissioning Manual with STARTER
•SINAMICS S120/S150 List Manual
•SINAMICS HLA System Manual Hydraulic Drive
•SINAMICS S120 Commissioning Manual with Startdrive1)
Maintenance/servicing •SINAMICS S120 Commissioning Manual with STARTER
•SINAMICS S120/S150 List Manual
•SINAMICS S120 Commissioning Manual with Startdrive1)
References •SINAMICS S120/S150 List Manual
1)
available as of Startdrive V14 release
2) available as of Startdrive V14 SP1 release
Target group
This documentation is intended for machine manufacturers, commissioning engineers, and
service personnel who use the SINAMICS drive system.
Benefits
This manual provides all of the information, procedures and operator actions required for the
particular usage phase.

Preface
Power Units in Booksize C/D-Type Format
8Manual, 01/2017, 6SL3097-4AC20-0BP1
Standard scope
The scope of the functionality described in this document can differ from that of the drive
system that is actually supplied.
●Other functions not described in this documentation might be able to be executed in the
drive system. However, no claim can be made regarding the availability of these functions
when the equipment is first supplied or in the event of service.
●The documentation can also contain descriptions of functions that are not available in a
particular product version of the drive system. The functionality of the supplied drive
system should only be taken from the ordering documentation.
●Extensions or changes made by the machine manufacturer must be documented by the
machine manufacturer.
For reasons of clarity, this documentation does not contain all of the detailed information on
all of the product types, and cannot take into consideration every conceivable type of
installation, operation and service/maintenance.
Technical Support
Country-specific telephone numbers for technical support are provided in the Internet at the
following address (https://support.industry.siemens.com/sc/ww/en/sc/2090) in the "Contact"
area.
Relevant directives and standards
You can obtain an up-to-date list of currently certified components on request from your local
Siemens office. If you have any questions relating to certifications that have not yet been
completed, please ask your Siemens contact person.
Certificates for download
The certificates can be downloaded from the Internet:
Certificates (https://support.industry.siemens.com/cs/ww/de/ps/13206/cert)
EC Declaration of Conformity
You can find the EC Declaration of Conformity for the relevant directives as well as the
relevant certificates, prototype test certificates, manufacturers declarations and test
certificates for functions relating to functional safety ("Safety Integrated") on the Internet at
the following address (https://support.industry.siemens.com/cs/ww/en/ps/13231/cert).

Preface
Power Units in Booksize C/D-Type Format
Manual, 01/2017, 6SL3097-4AC20-0BP1 9
The following directives and standards are relevant for SINAMICS S devices:
●
European Low Voltage Directive
SINAMICS S devices fulfil the requirements stipulated in the Low-Voltage Directive
2014/35/EU, insofar as they are covered by the application area of this directive.
●
European Machinery Directive
SINAMICS S devices fulfil the requirements stipulated in the Low-Voltage Directive
2006/42/EU, insofar as they are covered by the application area of this directive.
However, the use of the SINAMICS S devices in a typical machine application has been
fully assessed for compliance with the main regulations in this directive concerning health
and safety.
●
European EMC Directive
SINAMICS S devices comply with the EMC Directive 2014/30/EU.
●
EMC requirements for South Korea
SINAMICS S devices with the KC marking on the rating plate satisfy the EMC
requirements for South Korea.
●
Eurasian conformity
SINAMICS S comply with the requirements of the Russia/Belarus/Kazakhstan customs
union (EAC).
●
North American market
SINAMICS S devices provided with one of the test symbols displayed fulfil the
requirements stipulated for the North American market as a component of drive
applications.
You can find the relevant certificates on the Internet pages of the certifier
(http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.html).
●
Specification for semiconductor process equipment voltage drop immunity
SINAMICS S devices meet the requirements of standard SEMI F47-0706.
●
Australia and New Zealand (RCM formerly C-Tick)
SINAMICS S devices showing the test symbols fulfil the EMC requirements for Australia
and New Zealand.
●
Quality systems
Siemens AG employs a quality management system that meets the requirements of ISO
9001 and ISO 14001.
Not relevant standards
China Compulsory Certification
SINAMICS S devices do not fall in the area of validity of the China Compulsory Certification
(CCC).

Preface
Power Units in Booksize C/D-Type Format
10 Manual, 01/2017, 6SL3097-4AC20-0BP1
EMC limit values in South Korea
The EMC limit values to be observed for Korea correspond to the limit values of the EMC
product standard for variable-speed electric drives EN 61800-3 of category C2 or the limit
value class A, Group 1 to KN11. By implementing appropriate additional measures, the limit
values according to category C2 or limit value class A, Group 1, are observed. Further,
additional measures may be required, such as using an additional radio interference
suppression filter (EMC filter).
The measures for EMC-compliant design of the system are described in detail in this manual
respectively in the EMC Installation Guideline Configuration Manual.
The final statement regarding compliance with the standard is given by the respective label
attached to the individual unit.
Ensuring reliable operation
The manual describes a desired state which, if maintained, ensures the required level of
operational reliability and compliance with EMC limit values.
Should there be any deviation from the requirements in the manual, appropriate actions (e.g.
measurements) must be taken to check/prove that the required level of operational reliability
and compliance with EMC limit values are ensured.
Spare parts
Spare parts are available on the Internet at the following address
(https://www.automation.siemens.com/sow?sap-language=EN).
Product maintenance
The components are subject to continuous further development within the scope of product
maintenance (improvements to robustness, discontinuations of components, etc).
These further developments are "spare parts-compatible" and do not change the article
number.
In the scope of such spare parts-compatible further developments, connector positions are
sometimes changed slightly. This does not cause any problems with proper use of the
components. Please take this fact into consideration in special installation situations (e.g.
allow sufficient clearance for the cable length).
Use of third-party products
This document contains recommendations relating to third-party products. Siemens accepts
the fundamental suitability of these third-party products.
You can use equivalent products from other manufacturers.
Siemens does not accept any warranty for the properties of third-party products.

Preface
Power Units in Booksize C/D-Type Format
Manual, 01/2017, 6SL3097-4AC20-0BP1 11
Ground symbols
Table 2 Symbols
Symbol
Meaning
Connection for protective conductor (PE)
Ground (e.g. M 24 V)
Connection for function potential bonding

Preface
Power Units in Booksize C/D-Type Format
12 Manual, 01/2017, 6SL3097-4AC20-0BP1

Power Units in Booksize C/D-Type Format
Manual, 01/2017, 6SL3097-4AC20-0BP1 13
Table of contents
Preface ................................................................................................................................................... 5
1 Fundamental safety instructions ............................................................................................................ 17
1.1 General safety instructions .....................................................................................................17
1.2 Handling electrostatic sensitive devices (ESD) ......................................................................22
1.3 Industrial security ....................................................................................................................23
1.4 Residual risks of power drive systems....................................................................................24
2 System overview................................................................................................................................... 25
2.1 Field of application ..................................................................................................................25
2.2 Platform Concept and Totally Integrated Automation.............................................................26
2.3 Introduction .............................................................................................................................28
2.4 SINAMICS S120 components ................................................................................................30
2.4.1 Advantages of Motor Modules in booksize C/D-type format ..................................................32
2.4.2 Overview of C/D-type Motor Modules.....................................................................................33
2.5 System data ............................................................................................................................35
3 Motor Modules in booksize C/D-type format .......................................................................................... 39
3.1 Safety instructions for Motor Modules of C/D-type .................................................................39
3.2 Motor Modules with internal air cooling ..................................................................................43
3.2.1 Description ..............................................................................................................................43
3.2.2 Interface description................................................................................................................44
3.2.2.1 Overview .................................................................................................................................44
3.2.2.2 X1/X2 motor and brake connection ........................................................................................45
3.2.2.3 X21/X22 EP terminals / temperature sensor ..........................................................................47
3.2.2.4 X200-X203 DRIVE-CLiQ interface..........................................................................................48
3.2.2.5 Protective conductor connection (PE) ....................................................................................49
3.2.3 Connection examples .............................................................................................................50
3.2.4 Meaning of the LEDs ..............................................................................................................51
3.2.5 Dimension drawings................................................................................................................52
3.2.6 Installation...............................................................................................................................54
3.2.7 Technical data.........................................................................................................................56
3.2.7.1 Single Motor Modules .............................................................................................................56
3.2.7.2 Double Motor Modules............................................................................................................58
3.2.8 Characteristics ........................................................................................................................61
4 Accessories .......................................................................................................................................... 67
4.1 Motor connector ......................................................................................................................67
4.1.1 Description ..............................................................................................................................67
4.1.2 Electrical connection ...............................................................................................................68
4.1.2.1 Push-in connection .................................................................................................................69
4.1.2.2 Screw connection....................................................................................................................70

Table of contents
Power Units in Booksize C/D-Type Format
14 Manual, 01/2017, 6SL3097-4AC20-0BP1
4.1.2.3 Crimping conductor end sleeves............................................................................................ 70
4.1.3 Preparing the power cables ................................................................................................... 71
4.1.4 Connecting the motor cable ................................................................................................... 73
4.1.5 Installation .............................................................................................................................. 75
4.1.5.1 Installation .............................................................................................................................. 75
4.1.5.2 Shielding ................................................................................................................................ 76
4.1.5.3 Coding.................................................................................................................................... 78
4.1.5.4 Pre-assembled power cables................................................................................................. 79
4.2 Reinforced DC link busbars ................................................................................................... 80
4.2.1 Description ............................................................................................................................. 80
4.2.2 Removing the DC link busbars .............................................................................................. 81
4.2.3 Installing the reinforced DC link busbars ............................................................................... 83
5 Motor-side power components .............................................................................................................. 85
5.1 Motor reactors........................................................................................................................ 85
5.1.1 Description ............................................................................................................................. 85
5.1.2 Technical data........................................................................................................................ 86
6 Cabinet design...................................................................................................................................... 87
6.1 General information ............................................................................................................... 87
6.2 Safety instructions with respect to control cabinet design ..................................................... 88
6.3 Electromagnetic compatibility ................................................................................................ 88
6.3.1 General information ............................................................................................................... 88
6.3.2 Classification of EMC behavior.............................................................................................. 89
6.3.3 Drive system applications ...................................................................................................... 91
6.3.4 Emitted interference/interference immunity ........................................................................... 91
6.4 Arrangement of components and equipment......................................................................... 92
6.5 Electrical connection .............................................................................................................. 93
6.5.1 Releasing the DC link protective cover.................................................................................. 93
6.5.2 Connecting the DC link busbars and 24 V busbars to components in booksize C/D-
type format ............................................................................................................................. 94
6.5.2.1 Description ............................................................................................................................. 94
6.5.2.2 Installation .............................................................................................................................. 95
6.5.3 24 V connection ..................................................................................................................... 99
6.5.3.1 Description ............................................................................................................................. 99
6.5.4 Connection of booksize components to booksize C/D-type components ........................... 100
6.5.4.1 Description ........................................................................................................................... 100
6.5.5 Connecting the DC link rectifier adapter and the DC link adapter ....................................... 100
6.5.6 Connecting the 24 V terminal adapter ................................................................................. 101
6.5.7 Connecting EP terminals/temperature sensor ..................................................................... 101
6.5.7.1 Shield connection................................................................................................................. 101
6.6 Connection system .............................................................................................................. 102
6.6.1 Configuring the cable length ................................................................................................ 102
6.6.2 Current-carrying capacity and derating factors for power cables and signal cables ........... 103
6.7 Possible functions of the 24 V supply .................................................................................. 104
6.8 Cable shielding and routing ................................................................................................. 106
6.9 Protective connection and equipotential bonding ................................................................ 108

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Manual, 01/2017, 6SL3097-4AC20-0BP1 15
6.10 Notes on control cabinet cooling...........................................................................................111
6.10.1 Control cabinet cooling options.............................................................................................111
6.10.2 General information on ventilation ........................................................................................112
6.10.3 Ventilation clearances...........................................................................................................114
6.10.4 Dimensioning cooling equipment..........................................................................................115
6.11 Power losses of the components..........................................................................................116
6.11.1 General information ..............................................................................................................116
6.11.2 Power loss for power units with internal air cooling..............................................................116
6.11.3 Electronics losses of power units..........................................................................................117
6.11.4 Maximum power losses in the partial load range .................................................................117
6.11.5 Typical power losses for Motor Modules ..............................................................................118
7 Service and support for booksize C/D-type.......................................................................................... 121
7.1 Spare parts ...........................................................................................................................121
7.2 Replacing the fan..................................................................................................................121
7.2.1 Safety instructions when replacing a fan ..............................................................................121
7.2.2 Replacing the fan..................................................................................................................122
7.3 Recycling and disposal .........................................................................................................124
A Appendix............................................................................................................................................. 125
A.1 List of abbreviations ..............................................................................................................125
A.2 Screw terminals ....................................................................................................................134
A.3 Documentation overview ......................................................................................................135
Index................................................................................................................................................... 137

Table of contents
Power Units in Booksize C/D-Type Format
16 Manual, 01/2017, 6SL3097-4AC20-0BP1

Power Units in Booksize C/D-Type Format
Manual, 01/2017, 6SL3097-4AC20-0BP1 17
Fundamental safety instructions
1
1.1
General safety instructions
DANGER
Danger to life due to live parts and other energy sources
Death or serious injury can result when live parts are touched.
•Only work on electrical devices when you are qualified for this job.
•Always observe the country-specific safety rules.
Generally, six steps apply when establishing safety:
1. Prepare for shutdown and notify all those who will be affected by the procedure.
2. Disconnect the machine from the supply.
–Switch off the machine.
–Wait until the discharge time specified on the warning labels has elapsed.
–Check that it really is in a no-voltage condition, from phase conductor to phase
conductor and phase conductor to protective conductor.
–Check whether the existing auxiliary supply circuits are de-energized.
–Ensure that the motors cannot move.
3. Identify all other dangerous energy sources, e.g. compressed air, hydraulic systems, or
water.
4. Isolate or neutralize all hazardous energy sources by closing switches, grounding or
short-circuiting or closing valves, for example.
5. Secure the energy sources against switching on again.
6. Ensure that the correct machine is completely interlocked.
After you have completed the work, restore the operational readiness in the inverse
sequence.
WARNING
Danger to life through a hazardous voltage when connecting an unsuitable power supply
Touching live components can result in death or severe injury.
•Only use power supplies that provide SELV (Safety Extra Low Voltage) or PELV-
(Protective Extra Low Voltage) output voltages for all connections and terminals of the
electronics modules.

Fundamental safety instructions
1.1 General safety instructions
Power Units in Booksize C/D-Type Format
18 Manual, 01/2017, 6SL3097-4AC20-0BP1
WARNING
Danger to life when live parts are touched on damaged devices
Improper handling of devices can cause damage.
For damaged devices, hazardous voltages can be present at the enclosure or at exposed
components; if touched, this can result in death or severe injury.
•Ensure compliance with the limit values specified in the technical data during transport,
storage and operation.
•Do not use any damaged devices.
WARNING
Danger to life through electric shock due to unconnected cable shields
Hazardous touch voltages can occur through capacitive cross-coupling due to unconnected
cable shields.
•As a minimum, connect cable shields and the conductors of power cables that are not
used (e.g. brake cores) at one end at the grounded housing potential.
WARNING
Danger to life due to electric shock when not grounded
For missing or incorrectly implemented protective conductor connection for devices with
protection class I, high voltages can be present at open, exposed parts, which when
touched, can result in death or severe injury.
•Ground the device in compliance with the applicable regulations.
WARNING
Danger to life due to electric shock when opening plug connections in operation
When opening plug connections in operation, arcs can result in severe injury or death.
•Only open plug connections when the equipment is in a no-voltage state, unless it has
been explicitly stated that they can be opened in operation.

Fundamental safety instructions
1.1 General safety instructions
Power Units in Booksize C/D-Type Format
Manual, 01/2017, 6SL3097-4AC20-0BP1 19
WARNING
Danger to life through electric shock due to the residual charge of the power component
capacitors
Because of the capacitors, a hazardous voltage is present for up to 5 minutes after the
power supply has been switched off. Contact with live parts can result in death or serious
injury.
•Wait for 5 minutes before you check that the unit really is in a no-voltage condition and
start work.
NOTICE
Material damage due to loose power connections
Insufficient tightening torques or vibrations can result in loose electrical connections. This
can result in damage due to fire, device defects or malfunctions.
•Tighten all power connections with the specified tightening torques, e.g. line supply
connection, motor connection, DC link connections.
•Check all power connections at regular intervals. This applies in particular after
transport.
WARNING
Danger to life due to fire spreading if housing is inadequate
Fire and smoke development can cause severe personal injury or material damage.
•Install devices without a protective housing in a metal control cabinet (or protect the
device by another equivalent measure) in such a way that contact with fire is prevented.
•Ensure that smoke can only escape via controlled and monitored paths.
WARNING
Danger to life from electromagnetic fields
Electromagnetic fields (EMF) are generated by the operation of electrical power equipment,
such as transformers, converters, or motors.
People with pacemakers or implants are at particular risk in the immediate vicinity of this
equipment.
•If you have a heart pacemaker or implant, maintain a minimum distance of 2 m from
electrical power equipment.

Fundamental safety instructions
1.1 General safety instructions
Power Units in Booksize C/D-Type Format
20 Manual, 01/2017, 6SL3097-4AC20-0BP1
WARNING
Danger to life through unexpected movement of machines when using mobile wireless
devices or mobile phones
Using mobile wireless devices or mobile phones with a transmit power > 1 W closer than
approx. 2 m to the components may cause the devices to malfunction, influence the
functional safety of machines therefore putting people at risk or causing material damage.
•Switch the wireless devices or mobile phones off in the immediate vicinity of the
components.
WARNING
Danger to life due to the motor catching fire in the event of insulation overload
There is higher stress on the motor insulation through a ground fault in an IT system. If the
insulation fails, it is possible that death or severe injury can occur as a result of smoke and
fire.
•Use a monitoring device that signals an insulation fault.
•Correct the fault as quickly as possible so the motor insulation is not overloaded.
WARNING
Danger to life due to fire if overheating occurs because of insufficient ventilation clearances
Inadequate ventilation clearances can cause overheating of components with subsequent
fire and smoke. This can cause severe injury or even death. This can also result in
increased downtime and reduced service lives for devices/systems.
•Ensure compliance with the specified minimum clearance as ventilation clearance for
the respective component.
WARNING
Danger of an accident occurring due to missing or illegible warning labels
Missing or illegible warning labels can result in accidents involving death or serious injury.
•Check that the warning labels are complete based on the documentation.
•Attach any missing warning labels to the components, in the national language if
necessary.
•Replace illegible warning labels.