Siemens Simatic S7-400 User manual

SIMATIC
S7-400
S7-400 Automation System Module
Data
Reference Manual
Ausgabe 11/2016
A5E00850736-08
Preface
General specifications 1
Rack 2
Power supply modules 3
Digital modules 4
Analog modules 5
Interface modules 6
S5 interface IM 463-2 7
PROFIBUS DP master
interface IM 467/IM 467 FO 8
Cable duct and fan
subassemblies 9
RS 485 repeater 10
Parameter sets of signal
modules A
Diagnostic data of signal
modules B
Accessories and spare parts C
Directive on handling
electrostatic sensitive
devices (ESD) D
List of abbreviations E

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
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E00850736-08
Ⓟ 11/2016 Subject to change
Copyright © Siemens AG 2016.
All rights reserved

Preface
Purpose of this manual
The information contained in this manual can be used as a reference for operating, for
descriptions of the functions, and for the specifications of the signal modules, power supply
modules and interface modules of the S7-400.
How to configure, assemble and wire these modules in an S7-400 system is described in the
installation manuals for each system.
Basic knowledge required
This manual requires general knowledge of automation engineering.
In addition, you are required to know how to use computers or devices with similar functions
(e. g. programming devices) under Windows 2000 or XP operating systems. Since S7-400 is
configured with the
STEP 7 basic software, you have to have a good working knowledge of
the software. You can acquire this knowledge in the manual "Programming with STEP 7" . Read
the notes on the safety of electronic controllers in the appendix of the Installation manual –
especially when using an S7-400 in safety-relevant areas.
Target group
This manual is aimed at people with the required qualifications to commission, operate and
maintain the products described.
Scope of the manual
The manual applies to the S7-400 automation system.
Changes compared to the previous version
The following changes have been made compared to the previous version of this manual
S7-400 Automation System; Module Specifications, Edition 05/2007 (A5E00850735-04):
The revision of the ATEX standard was taken into consideration in chapter Standards,
certificates and approvals (Page 13).
Approvals
You can find details on the certificates and approvals in the chapter General specifications
(Page 13)“General specifications.”
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 3

Position in the information landscape
This manual forms part of the S7-400 documentation.
System Documentation package
S7-400 ●
S7-400 automation system, installation
● S7-400 automation system, module specifications
● S7-400 automation system, CPU specifications
● S7-400 instruction list
Further Information
You can find further and additional information on the topics in this manual in the following
manuals:
Programming with STEP 7 (http://support.automation.siemens.com/WW/view/en/18652056)
Configuring Hardware and Communication Connections with STEP 7 (http://
support.automation.siemens.com/WW/view/en/18652631)
System and Standard Functions (http://support.automation.siemens.com/WW/view/en/
1214574)
PROFINET system description (http://support.automation.siemens.com/WW/view/en/
19292127)
Isochrone mode (http://support.automation.siemens.com/WW/view/en/15218045)
Recycling and disposal
The S7-400 is environmentally friendly and is thus recyclable. For environmentally compliant
recycling and disposal of your discarded device, please contact a company certified for the
disposal of electronic waste.
Additional support
If you have any questions relating to the products described in this manual and cannot find the
answers in this documentation, please contact your Siemens partner at the appropriate office
or sales and service location.
You will find information on who to contact at:
Contact partners (http://www.siemens.com/automation/partner)
A guide to the technical documents for the various SIMATIC products and systems is available
at:
Documentation (http://www.automation.siemens.com/simatic/portal/html_76/techdoku.htm)
You can find the online catalog and order system under:
Catalog (http://mall.automation.siemens.com/)
Preface
S7-400 Automation System Module Data
4Reference Manual, Ausgabe 11/2016, A5E00850736-08

Training center
We offer a range of relevant courses to help you to get started with the SIMATIC S7 automation
system. Please contact your regional training center or our central training center in 90327
Nuremberg, Germany for details:
Training (http://www.sitrain.com/index_en.html)
Technical support
You can contact Technical Support for all Industry Automation products using the Web form
for Support Request
Support Request (http://www.siemens.de/automation/support-request)
Additional information about our technical support is available on the Internet at
Technical Support (http://support.automation.siemens.com)
Service & Support on the Internet
In addition to our documentation, we offer a comprehensive knowledge base online on the
Internet at:
Service & Support (http://www.siemens.com/automation/service&support)
There you will find:
● Our newsletter containing up-to-date information on your products.
● The latest documents via our search function in Service & Support.
● An international forum where users and specialists can exchange their experiences.
● Your local contact partner for automation and drive technology in our contacts database.
● Information about on-site service, repairs and spare parts. Much more can be found under
"Services".
● Applications and tools for optimizing operations with SIMATIC S7. Performance
measurements for DP and PN, for example, are also published here.
Preface
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 5

Preface
S7-400 Automation System Module Data
6Reference Manual, Ausgabe 11/2016, A5E00850736-08

Table of contents
Preface.........................................................................................................................................................3
1General specifications................................................................................................................................13
1.1 Standards, certificates and approvals....................................................................................13
1.2 Electromagnetic compatibility.................................................................................................20
1.3 Shipping and storage conditions for modules and backup batteries......................................23
1.4 Mechanical and ambient conditions for S7-400 operation.....................................................24
1.5 Information on insulation tests, protection class and degree of protection............................26
2 Rack...........................................................................................................................................................27
2.1 Function and design of the racks...........................................................................................27
2.2 The racks UR1 (6ES7400-1TAx1-0AA0) and UR2 (6ES7400-1JAx1-0AA0).........................29
2.3 UR2-H Rack 6ES7400-2JAx0-0AA0).....................................................................................31
2.4 Rack CR2 (6ES7401-2TA01-0AA0).......................................................................................33
2.5 Rack CR3 (6ES7401-1DA01-0AA0)......................................................................................35
2.6 Racks ER1 (6ES7403-1TAx1-0AA0) and ER2 (6ES7403-1JAx1-0AA0)...............................36
3 Power supply modules...............................................................................................................................39
3.1 Common characteristics of the power supply modules..........................................................39
3.2 Redundant power supply modules.........................................................................................41
3.3 Backup battery (option)..........................................................................................................43
3.4 Operator controls and indicators............................................................................................45
3.5 Fault/Error messages via LEDs.............................................................................................48
3.6 Power supply module PS 407 4A (6ES7407-0DA01-0AA0)..................................................54
3.7 Power supply module PS 407 4A (6ES7407-0DA02-0AA0)..................................................57
3.8 Power supply modules PS 407 10A (6ES7407-0KA01-0AA0) and PS 10A R
(6ES7407-0KR00-0AA0)........................................................................................................60
3.9 Power supply modules PS 407 10A (6ES7407-0KA02-0AA0) and PS 10A R
(6ES7407-0KR02-0AA0)........................................................................................................63
3.10 Power supply module PS 407 20A (6ES7407-0RA01-0AA0)................................................66
3.11 Power supply module PS 407 20A (6ES7407-0RA02-0AA0)................................................68
3.12 Power supply module PS 405 4A (6ES7405-0DA01-0AA0)..................................................70
3.13 Power supply module PS 405 4A (6ES7405-0DA02-0AA0)..................................................72
3.14 Power supply modules PS 405 10A (6ES7405-0KA01-0AA0) and PS 405 10A R
(405-0KR00-0AA0).................................................................................................................74
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 7

3.15 Power supply modules PS 405 10A (6ES7405-0KA02-0AA0) and PS 405 10A R
(405-0KR02-0AA0).................................................................................................................76
3.16 Power supply module PS 405 20A (6ES7405-0RA01-0AA0)................................................78
3.17 Power supply module PS 405 20A (6ES7405-0RA02-0AA0)................................................80
4 Digital modules...........................................................................................................................................83
4.1 Module overview....................................................................................................................83
4.2 Steps in selecting and commissioning the digital module......................................................85
4.3 Assigning parameters to digital modules...............................................................................85
4.3.1 Parameters.............................................................................................................................85
4.3.2 Parameters of digital input modules.......................................................................................87
4.3.3 Parameters of digital output modules.....................................................................................88
4.4 Diagnostics for digital modules..............................................................................................88
4.4.1 General information about diagnostic messages...................................................................88
4.4.2 Diagnostic messages of the digital modules..........................................................................90
4.4.3 Causes of errors and remedies for digital modules................................................................91
4.5 Interrupts of the digital modules.............................................................................................93
4.6 Input characteristic curve for digital inputs.............................................................................95
4.7 Digital input module SM 421; DI 32 x DC 24 V (6ES7421-1BL01-0AA0)..............................97
4.8 Digital input module SM 421; DI 16 x DC 24 V (6ES7421-7BH01-0AB0)............................100
4.8.1 Features...............................................................................................................................100
4.8.2 Assigning parameters to the SM 421; DI 16 x DC 24 V.......................................................105
4.8.3 Behavior of the SM 421; DI 16 x DC 24 V............................................................................107
4.9 Digital input module SM 421; DI 16 x AC 120 V (6ES7421-5EH00-0AA0)..........................109
4.10 Digital input module SM 421; DI 16 x UC 24/60 V (6ES7421-7DH00-0AB0).......................112
4.10.1 Features...............................................................................................................................112
4.10.2 Assigning parameters to the SM 421; DI 16 x UC 24/60 V..................................................116
4.11 Digital input module SM 421; DI 16 x UC 120/230 V (6ES7 421-1FH00-0AA0)..................119
4.12 Digital input module SM 421; DI 16 x UC 120/230 V (6ES7421-1FH20-0AA0)...................122
4.13 Digital input module SM 421; DI 32xUC 120 V (6ES7421-1EL00-0AA0)............................126
4.14 Digital output module SM 422; DO 16 x DC 24 V/2 A; (6ES7422-1BH11-0AA0)................129
4.15 Digital output module SM 422; DO 16 x DC 20-125 V/1.5 A (6ES7422-5EH10-0AB0).......132
4.15.1 Features...............................................................................................................................132
4.15.2 Assigning parameters to the SM 422; DO 16 x DC 20-125 V/1.5 A.....................................136
4.16 Digital output module SM 422; DO 32 x DC 24 V/0.5 A (6ES7422-1BL00-0AA0)...............137
4.17 Digital output module SM 422; DO 32 x DC 24 V/0.5 A (6ES7422-7BL00-0AB0)...............140
4.17.1 Features...............................................................................................................................140
4.17.2 Assigning parameters to the SM 422; DO 32 x DC 24 V/0.5 A............................................144
4.17.3 Behavior of the SM 422; DO 32 x DC 24 V/0.5 A................................................................145
4.18 Digital output module SM 422; DO 8 x AC 120/230 V/5 A (6ES7422-1FF00-0AA0)...........145
4.19 Digital output module SM 422; DO 16 x AC 120/230 V/2 A (6ES7422-1FF00-0AA0).........149
Table of contents
S7-400 Automation System Module Data
8Reference Manual, Ausgabe 11/2016, A5E00850736-08

4.20 Digital output module SM 422; DO 16 x AC 20-120 V/2 A (6ES7422-5EH00-0AB0)..........153
4.20.1 Features...............................................................................................................................153
4.20.2 Assigning parameters to the SM 422; DO 16 x AC 20-120 V/2 A........................................157
4.21 Relay output module SM 422; DO 16 x UC 30/230 V/Rel. 5 A (6ES7422-1HH00-0AA0)....158
5 Analog modules........................................................................................................................................163
5.1 General information..............................................................................................................163
5.2 Module overview..................................................................................................................164
5.3 Steps for commissioning analog modules............................................................................167
5.4 Representation of analog values..........................................................................................167
5.4.1 General information..............................................................................................................167
5.4.2 Representation of analog values of analog input channels..................................................169
5.4.3 Binary representation of input ranges..................................................................................170
5.4.4 Representation of analog values in voltage measuring ranges ..........................................172
5.4.5 Representation of analog values in the current measuring ranges......................................174
5.4.6 Representation of analog values for resistance-type sensors.............................................176
5.4.7 Representation of analog values for resistance thermometer ............................................177
5.4.8 Representation of analog values for thermocouples............................................................180
5.4.9 Representation of analog values for analog output channels..............................................185
5.5 Setting the measuring method and ranges of analog input channels..................................189
5.6 Behavior of the analog modules...........................................................................................192
5.6.1 Introduction..........................................................................................................................192
5.6.2 Effect of supply voltage and operating mode.......................................................................193
5.6.3 Effect of the value range for analog values..........................................................................194
5.6.4 Effect of operational limit and basic error limit.....................................................................195
5.7 Conversion, cycle, settling and response time of analog modules......................................196
5.8 Assigning parameters to analog modules............................................................................199
5.8.1 General information about parameter assignment...............................................................199
5.8.2 Parameters of analog input modules...................................................................................201
5.8.3 Parameters of analog output modules.................................................................................203
5.9 Connecting sensors to analog inputs...................................................................................204
5.10 Connecting voltage sensors.................................................................................................207
5.11 Connecting current sensors.................................................................................................208
5.12 Connecting resistance thermometers and resistors.............................................................212
5.13 Connecting thermocouples..................................................................................................215
5.14 Connecting loads/actuators to analog outputs.....................................................................219
5.15 Connecting loads/actuators to voltage outputs....................................................................220
5.16 Connecting loads/actuators to current outputs.....................................................................222
5.17 Diagnostics functions of analog modules.............................................................................223
5.18 Interrupts of analog modules................................................................................................227
5.19 Analog input module SM 431; AI 8 x 13 Bit (6ES7431-1KF00-0AB0)..................................229
5.19.1 Features...............................................................................................................................229
Table of contents
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 9

5.19.2 Commissioning the SM 431; AI 8 x 13 Bit............................................................................235
5.19.3 Measuring methods and measuring ranges of SM 431; AI 8 x 13 Bit..................................236
5.20 Analog input module SM 431; AI 8 x 14 Bit (6ES7431-1KF10-0AB0)..................................237
5.20.1 Features...............................................................................................................................237
5.20.2 Commissioning the SM 431; AI 8 x 14 Bit............................................................................247
5.20.3 Measuring methods and measuring ranges of SM 431; AI 8 x 14 Bit..................................249
5.21 Analog input module SM 431; AI 8 x 14 Bit (6ES7431-1KF20-0AB0)..................................253
5.21.1 Features...............................................................................................................................253
5.21.2 Commissioning the SM 431; AI 8 x 14 Bit............................................................................259
5.21.3 Measuring methods and measuring ranges of SM 431; AI 8 x 14 Bit..................................262
5.22 Analog input module SM 431; AI 16 x 13 Bit (6ES7431-0HH00-0AB0)...............................264
5.22.1 Features...............................................................................................................................264
5.22.2 Commissioning the SM 431; AI 16 x 13 Bit..........................................................................270
5.22.3 Measuring methods and measuring ranges of SM 431; AI 16 x 13 Bit................................271
5.23 Analog input module SM 431; AI 16 x 16 Bit (6ES7431-7QH00-0AB0)...............................273
5.23.1 Features...............................................................................................................................273
5.23.2 Commissioning the SM 431; AI 16 x 16 Bit..........................................................................284
5.23.3 Measuring methods and measuring ranges of SM 431; AI 16 x 16 Bit................................288
5.24 Analog input module SM 431; AI 8 x RTD x 16 Bit (6ES7431-7KF10-0AB0)......................292
5.24.1 Features...............................................................................................................................292
5.24.2 Commissioning the SM 431; AI 8 x RTD x 16 Bit.................................................................299
5.24.3 Measuring methods and measuring ranges of the SM 431; AI 8 x RTD x 16 Bit.................302
5.25 Analog input module SM 431; AI 8 x 16 Bit (6ES7431-7KF00-0AB0)..................................303
5.25.1 Features...............................................................................................................................303
5.25.2 Commissioning the SM 431; AI 8 x 16 Bit............................................................................310
5.25.3 Measuring methods and measuring ranges of SM 431; AI 8 x 16 Bit..................................315
5.26 Analog output module SM 432; AO 8 x 13 Bit (6ES7432-1HF00-0AB0).............................316
5.26.1 Features...............................................................................................................................316
5.26.2 Commissioning the SM 432; AO 8 x 13 Bit..........................................................................322
5.26.3 Output ranges of the SM 432; AO 8 x 13 Bit .......................................................................323
6 Interface modules.....................................................................................................................................325
6.1 Common features of the interface modules.........................................................................325
6.2 Interface modules IM 460-0 (6ES7 460-0AA01-0AB0) and IM 461-0 (6ES7
461-0AA01-0AA0)................................................................................................................330
6.3 Interface modules IM 460-1 (6ES7460-1BA01-0AB0) and IM 461-1
(6ES7461-1BA01-0AA0)......................................................................................................333
6.4 Interface modules IM 460-3 (6ES7460-3AA01-0AB0) and IM 461-3
(6ES7461-3AA01-0AA0)......................................................................................................337
6.5 Interface modules IM 460-4; (6ES7460-4AA01-0AB0) and IM 461-4;
(6ES7461-4AA01-0AA0)......................................................................................................340
7 S5 interface IM 463-2...............................................................................................................................345
7.1 Using SIMATIC S5 expansion units in an S7-400................................................................345
7.2 Rules for connecting S5 expansion units.............................................................................347
7.3 Operator controls and indicators..........................................................................................348
Table of contents
S7-400 Automation System Module Data
10 Reference Manual, Ausgabe 11/2016, A5E00850736-08

7.4 Installing and connecting the IM 463-2................................................................................350
7.5 Setting the operating modes of the IM 314..........................................................................352
7.6 Configuring S5 modules for operation in the S7-400...........................................................355
7.7 Pin assignments of the 721 cable........................................................................................357
7.8 Terminating connector for IM 314........................................................................................359
7.9 Specifications IM463-2 (6ES7463-2AA00-0AA0) ................................................................361
8 PROFIBUS DP master interface IM 467/IM 467 FO................................................................................363
8.1 PROFIBUS DP master interface IM 467/IM 467 FO............................................................363
8.1.1 Overview..............................................................................................................................363
8.1.2 Indicators and the mode selector.........................................................................................366
8.2 Configuration........................................................................................................................368
8.3 Connection to PROFIBUS DP..............................................................................................368
8.3.1 Connection options .............................................................................................................368
8.3.2 Bus connector......................................................................................................................369
8.3.3 Optical connection to PROFIBUS DP..................................................................................371
8.3.4 Connecting a fiber-optic cable to the IM 467 FO..................................................................372
8.4 Specifications.......................................................................................................................374
8.4.1 Specifications of the IM 467 (6ES7467-5GJ02-0AB0))........................................................374
8.4.2 Specifications of the IM 467 FO (6ES7467-5FJ00-0AB0) ...................................................376
9 Cable duct and fan subassemblies...........................................................................................................377
9.1 Features...............................................................................................................................377
9.2 Fan monitoring in the fan subassemblies.............................................................................378
9.3 Cable duct (6ES7408-0TA00-0AA0)....................................................................................380
9.4 The 120/230 VAC fan subassembly (6ES7408-1TB00-0XA0).............................................381
9.5 The 24 V DC fan subassembly (6ES7408-1TA01-0XA0)....................................................384
10 RS 485 repeater.......................................................................................................................................387
10.1 Introduction..........................................................................................................................387
10.2 Applications and features (6ES7972-0AA01-0XA0).............................................................388
10.3 Design of the RS 485 repeater (6ES7972-0AA01-0XA0)....................................................389
10.4 RS 485 repeater in ungrounded and grounded operation....................................................390
10.5 Specifications.......................................................................................................................392
A Parameter sets of signal modules............................................................................................................395
A.1 How to assign the parameters for signal modules in the user program...............................395
A.2 Parameters of digital input modules.....................................................................................397
A.3 Parameters of digital output modules...................................................................................400
A.4 Parameters of analog input modules...................................................................................403
Table of contents
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 11

B Diagnostic data of signal modules............................................................................................................405
B.1 Evaluating diagnostic data of signal modules in the user program......................................405
B.2 Structure and contents of diagnostic data bytes 0 and 1.....................................................406
B.3 Diagnostic data of the digital input modules as of byte 2.....................................................407
B.4 Diagnostic data of the digital output modules as of byte 2...................................................412
B.5 Diagnostic data of the analog input modules as of byte 2....................................................420
C Accessories and spare parts....................................................................................................................429
C.1 Accessories and spare parts................................................................................................429
D Directive on handling electrostatic sensitive devices (ESD).....................................................................433
D.1 ESD: What are the directives for handling electrostatic sensitive devices?.........................433
D.2 Electrostatic charging of persons.........................................................................................434
D.3 Basic protective measures against electrostatic discharge..................................................435
E List of abbreviations..................................................................................................................................437
E.1 List of abbreviations.............................................................................................................437
Glossary...................................................................................................................................................441
Index.........................................................................................................................................................455
Table of contents
S7-400 Automation System Module Data
12 Reference Manual, Ausgabe 11/2016, A5E00850736-08

General specifications 1
1.1 Standards, certificates and approvals
Information on the type plate
Note
You will find the current approvals on the type plate of the respective product.
WARNING
Open Equipment
Death, serious injury or substantial material damage can occur.
S7 400 modules are classified as open equipment, This means that the S7 400 should only
be installed in an enclosure or cabinet.
Access to the enclosures or cabinets should only be possible with a key or with a tool, and
access should only be permitted for trained or approved personnel.
IEC 61131-2
The S7-400 automation system meets the requirements and criteria of standard IEC 61131-2
(Programmable Controllers, Part 2: Equipment Requirements and Tests.)
CE marking
Our products meet the requirements and protective objectives of the following EU Directives
and comply with the corresponding European standards (EN):
● Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014
on the harmonization of the laws of the Member States relating to the making available on
the market of electrical equipment designed for use within certain voltage limits (Low
Voltage Directive)
● Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014
on the harmonization of the laws of the Member States relating to electromagnetic
compatibility (EMC Directive)
● Directive 2014/34/EU of the European Parliament and of the Council of 26 February 2014
on the harmonisation of the laws of the Member States relating to equipment and protective
systems intended for use in potentially explosive atmospheres (ATEX Directive)
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 13

The EC Declaration of Conformity can be downloaded from the Customer Support Internet
pages (keyword "declaration of conformity").
EMC directive
SIMATIC products are designed for industrial applications.
Table 1-1 Use in industry
Area of application Noise emission requirements Noise immunity requirements
Industry EN 61000-6-4: 2001 + A1:2011 EN 61000-6-2: 2005
Low voltage directive
The products in the following table meet the requirements of EU Directive 2014/35/EU "Low
Voltage Directive". Compliance with this EU directive has been checked in accordance with
DIN EN 61131-2 (corresponds to IEC 61131-2).
Table 1-2 Products that fulfill the requirements of the low-voltage directive
Name Order number
Digital input module SM 421;DI 32 x UC 120 V 6ES7 421-1EL00-0AA0
Digital input module SM 421;DI 16 x UC 120/230 V 6ES7 421-1FH00-0AA0
Digital output module SM 422;DO 8 x AC 120/230 V/5A 6ES7 422-1FF00-0AA0
Digital output module SM 422;DO 16 x AC 120/230 V/2A 6ES7 422-1FH00-0AB0
Relay output module SM 422;DO 16 x UC30/230 V/Rel5A 6ES7 422-1HH00-0AA0
Digital input module SM 421;DI 16 x UC 120/230 V 6ES7421-1FH20-0AA0
The 120/230 VAC fan subassembly 6ES7 408-1TB00-0XA0
PS 407 4A 6ES7 407-0DA01-0AA0
6ES7 407-0DA02-0AA0
PS 407 10A 6ES7 407-0KA01-0AA0
6ES7 407-0KA02-0AA0
PS 407 20A 6ES7 407-0RA01-0AA0
6ES7 407-0RA02-0AA0
PS 407 10A R 6ES7 407-0KR00-0AA0
6ES7 407-0KR02-0AA0
Note
In the new releases, some of the devices listed above fulfill the requirements of the explosion
protection guidelines instead of those of the low-voltage directive. Please note the information
on the type plate.
General specifications
1.1 Standards, certificates and approvals
S7-400 Automation System Module Data
14 Reference Manual, Ausgabe 11/2016, A5E00850736-08

ATEX Directive
In accordance with EN 60079-15 (Electrical Apparatus for Potentially Explosive Atmospheres;
Type of Protection "n") and EN 60079-0 (Electrical apparatus for explosive gas atmospheres
- Part 0: General requirements)
II 3 G Ex nA IIC T4..T6 Gc
Marking for Australia and New Zealand
Our products meet the requirements of standard EN 61000-6-4.
cULus approval
Note
The marks on the rating plate indicate which cULus approvals have been issued for your
product.
R
Underwriters Laboratories Inc., complying with
● UL 508 (Industrial Control Equipment)
● CSA C22.2 No. 142 (Process Control Equipment)
or cULus approval, Hazardous Location
HAZ. LOC.
R
CULUS Listed E248953 INT. CONT. EQ. FOR HAZ. LOC.
Underwriters Laboratories Inc., complying with
● UL 508 (Industrial Control Equipment)
● CSA C22.2 No. 142 (Process Control Equipment)
● ISA 12.12.01 (Hazardous Location)
● CSA-213 (Hazardous Location)
General specifications
1.1 Standards, certificates and approvals
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 15

APPROVED for Use in
● Cl. 1, Div. 2, GP. A, B, C, D T4A
● Cl. 1, Zone 2, GP. IIC T4
Note the following information.
or cULus Approvals, Hazardous Location for Relay Modules
HAZ. LOC.
R
CULUS Listed E223122 INT. CONT. EQ. FOR HAZ. LOC.
Underwriters Laboratories Inc., complying with
● UL 508 (Industrial Control Equipment)
● CSA C22.2 No. 142 (Process Control Equipment)
● UL 1604 (Hazardous Location)
● CSA-213 (Hazardous Location)
APPROVED for Use in
● Cl. 1, Div. 2, GP. A, B, C, D T4A
● Cl. 1, Zone 2, GP. IIC T4
● Cl. 1, Zone 2, AEx nC IIC T4
Note the following information.
Note
This product must be installed according to the NEC (National Electric Code) stipulations.
When used in environments according to class I, division 2 (see above), S7-400 must be
mounted in an enclosure that corresponds to at least IP54 according to EN 60529.
You can find information about the use of S7-400 in hazardous areas of zone 2 in a separate
document, which is included in this documentation package.
General specifications
1.1 Standards, certificates and approvals
S7-400 Automation System Module Data
16 Reference Manual, Ausgabe 11/2016, A5E00850736-08

WARNING
Installation Instructions according cULus
WARNING – Explosion Hazard - Do not disconnect while circuit is live unless area is known
to be non-hazardous.
WARNING – Explosion Hazard - Substitution of components may impair suitability for Class
I, Division 2 or Class I, Zone 2
This equipment is suitable for use in Class I, Division 2, Groups A, B, C or D; Class I, Zone
2, Group IIC, or non-hazardous locations only.
CuULu requirements for hazardous location on the battery power supply for CPUs
The backup voltage for a CPU must be supplied over a non-incendive plug connection. The
figure below shows such a plug connection.
1 2
(1) Battery or supply voltage
(2) CPU with "Ext. Batt." connector
Figure 1-1 Back-up voltage supply
The following conditions apply to the performance characteristics of this connection:
Voc (no load voltage) = 15 V Vmax = 15 V
Isc (short-circuit current)= 50 mA Imax = 50 mA
Ca = Battery/voltage supply capacity Ci = 25 nF maximum
La = Battery/voltage supply inductance Li = 2 mH maximum
The battery/power supply that powers the non-incendive connection must comply with the
following ratings:
Battery/Power supply CPU input "Ext. Batt." with cable
Voc ≤ Vmax (15 V)
Isc ≤ Imax (50 mA)
Ca ≥ Ci + Cc (25 nF + Cc)
La ≥ Li + Lc (2 mH + Lc)
Cc = Cable capacity
Lc = Cable inductance
Note
If you do not know the capacity and inductance of the cable, you can use the following values:
Cc = 197 pF/m (60 pF/ft.), Lc = 0.66 mH/m (0.2 mH/ft)
General specifications
1.1 Standards, certificates and approvals
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 17

Example
The Varta 4022 battery together with a 1.5 m long cable and a Leonhardy 02-02.1500 plug
meet these conditions.
FM Approval
Factory Mutual Approval Standard Class Number 3611, Class I, Division 2,
Group A, B, C, D.
Temperature class: T4 at 60° C ambient temperature
WARNING
Personal injury or property damage can result.
In hazardous areas, personal injury or property damage can result if you create or break an
electrical circuit during operation of an S7-400 (for example, by means of plug-in connections,
fuses, switches).
Do not create or break live electrical circuits unless you are certain there is no danger of
explosion.
When used in FM conditions, the S7-400 must be fitted in an enclosure that corresponds to
at least IP54 in accordance with EN 60529.
NEC (National Electric Code) and CEC (Canadian Electric Code) requirements for Hazardous
Locations for battery power supply for CPUs
The backup voltage for a CPU must be supplied over a non-incendive plug connection. The
figure below shows such a plug connection.
1 2
(1) Battery or supply voltage
(2) CPU with "Ext. Batt." connector
Figure 1-2 Back-up voltage supply
The following conditions apply to the performance characteristics of this connection:
Voc (no load voltage) = 15 V Vmax = 15 V
Isc (short-circuit current)= 50 mA Imax = 50 mA
Ca = Battery/voltage supply capacity Ci = 25 nF maximum
La = Battery/voltage supply inductance Li = 2 mH maximum
General specifications
1.1 Standards, certificates and approvals
S7-400 Automation System Module Data
18 Reference Manual, Ausgabe 11/2016, A5E00850736-08

The battery/power supply that powers the non-incendive connection must comply with the
following ratings:
Battery/power supply CPU input "Ext. Batt." with cable
Voc ≤ Vmax (15 V)
Isc ≤ Imax (50 mA)
Ca ≥ Ci + Cc (25 nF + Cc)
La ≥ Li + Lc (2 mH + Lc)
Cc = Cable capacity
Lc = Cable inductance
Note
The concept of non-incendive field wiring allows the interconnection of devices with non-
incendive field wiring using any wiring method approved for unclassified sites.
If you do not know the capacity and inductance of the cable, you can use the following values:
Cc = 197 pF/m (60 pF/ft.), Lc = 0.66 mH/m (0.2 mH/ft)
Marine Approvals
Classification societies:
● ABS (American Bureau of Shipping)
● BV (Bureau Veritas)
● DNV (Det Norske Veritas)
● GL (Germanischer Lloyd)
● LRS (Lloyds Register of Shipping)
● Class NK (Nippon Kaiji Kyokai)
Safety requirements for installation
The S7-400 automation system is "open-type equipment" in accordance with standard
IEC 61131-2 and therefore EU Directive 2014/35/EU (Low Voltage Directive), and "open type"
in accordance with UL/CSA certification.
To fulfill requirements for safe operation with regard to mechanical stability, flame retardation,
stability, and shock-hazard protection, the following alternative types of installation are
specified:
● Installation in a suitable cabinet
● Installation in a suitable housing
● Installation in a suitably equipped, enclosed operating area.
General specifications
1.1 Standards, certificates and approvals
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 19

1.2 Electromagnetic compatibility
Introduction
This section provides details of the immunity of S7-400 modules and information on RFI
suppression.
All components of the S7-400 automation system meet the requirement of the standards
applicable in Europe provided the system is installed in accordance with all applicable
regulations (see
Installation manual, sections 2 and 4 ).
"EMC" definition
Electromagnetic compatibility (EMC) is the ability of an electrical device or system to operate
satisfactorily in its electromagnetic environment without affecting that environment.
WARNING
Personal injury or property damage can result.
Installing expansions that are not approved for the S7-400 can breach the requirements and
regulations governing safety and electromagnetic compatibility.
Only use expansions that are approved for the system.
Pulse-shaped interference
The table below shows the electromagnetic compatibility of the modules with pulse shaped
interference. The system S7-400 system must meet the requirements and guidelines for
electrical assembly.
Table 1-3 Pulse-shaped interference
Pulse-shaped interference Test voltage Corresponds to
immunity test lev‐
el
Electrostatic discharge
in accordance with IEC 61000-4-2
Air discharge:
Contact discharge:
±8 kV
±6 kV
3
Burst (electrical fast transient) in accord‐
ance with IEC 61000-4-4
2 kV (power supply line)
2 kV (signal line >30 m)
1 kV (signal line <30 m)
3
General specifications
1.2 Electromagnetic compatibility
S7-400 Automation System Module Data
20 Reference Manual, Ausgabe 11/2016, A5E00850736-08