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Manual
Industrial Controls
Load Feeders and Motor Starters
SIRIUS 3RM1 Motor Starter
11/2013Edition
Answers for industry.
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SIRIUS 3RM1 motor starter
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Industrial Controls
Load feeders and motor starters
SIRIUS 3RM1 motor starter
Manual
11/2013
A5E0345285095020A/RS-AB/002
Introduction
1
Product-specific safety
information
2
Description
3
Configuration
4
Mounting
5
Connection
6
Operator control and
monitoring
7
Service and maintenance
8
Technical data
9
Dimension drawings
10
Circuit diagrams
11
Typical circuits
A
Directives
B
Correction sheet
C
Page 4
Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
3ZX1012-0RM10-2AC1
Ⓟ 11/2013 Technical data subject to change
Copyright © Siemens AG 2012.
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.
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Table of contents
1 Introduction................................................................................................................................... 9
1.1 Responsibility of the user for system configuration and functionality .......................................... 9
1.2 Required basic knowledge........................................................................................................ 9
1.3 Scope .................................................................................................................................... 10
1.4 Definition ................................................................................................................................ 10
1.5 Conformity.............................................................................................................................. 10
1.6 Further documentation ........................................................................................................... 11
1.7 Service&Support .................................................................................................................... 11
1.8 DataMatrix code ..................................................................................................................... 14
1.9 Correction sheet ..................................................................................................................... 15
2 Product-specific safety information ................................................................................................ 17
2.1 General safety notes .............................................................................................................. 17
2.2 Safety information for hazardous areas .................................................................................. 17
2.3 Safety instructions for safety-related applications .................................................................... 18
2.4 Intended use .......................................................................................................................... 19
2.5 Current information about operational safety........................................................................... 20
2.6 Declaration of conformity ........................................................................................................ 20
3 Description ................................................................................................................................. 21
3.1 Overview ................................................................................................................................ 21
3.2 Applications............................................................................................................................ 22
3.3 Hybrid technology................................................................................................................... 23
3.4 Device versions ...................................................................................................................... 24
3.5 Functions ............................................................................................................................... 27
3.5.1 Switching the 3RM1 motor starter under normal operating conditions ..................................... 27
3.5.1.1 Direct-on-line starter ............................................................................................................... 27
3.5.1.2 Reversing starter .................................................................................................................... 28
3.5.2 Overload protection ................................................................................................................ 29
3.5.2.1 Protective functions ................................................................................................................ 29
3.5.2.2 Thermal calculation method (motor memory module) .............................................................. 30
3.5.2.3 ATEX-certified motor overload protection in the case of 3RM11/3RM13 Failsafe..................... 32
3.5.3 Shutdown on malfunction ....................................................................................................... 35
3.5.4 Safety-related shutdown with 3RM11/3RM13 Failsafe motor starters ...................................... 36
3.5.5 Carrying out the function test .................................................................................................. 39
3.6 Accessories and order number scheme .................................................................................. 41
3.6.1 Overview of all device components ......................................................................................... 41
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3.6.2 Accessories ............................................................................................................................42
3.6.2.1 Infeed system ..........................................................................................................................42
3.6.2.2 Sealable cover ........................................................................................................................44
3.6.2.3 Wall fixture ..............................................................................................................................44
3.6.2.4 Device connectors ...................................................................................................................45
3.6.2.5 Terminals ................................................................................................................................48
3.6.2.6 Device identification label ........................................................................................................48
3.6.3 Order number scheme for SIRIUS 3RM1 motor starter ............................................................49
4 Configuration .............................................................................................................................. 51
4.1 Rated operational current and derating ....................................................................................51
4.2 Ambient conditions ..................................................................................................................56
4.2.1 Application environment ..........................................................................................................56
4.2.2 Ambient temperature ...............................................................................................................56
4.2.3 Mounting position ....................................................................................................................56
4.2.4 Grounding measures ...............................................................................................................56
4.2.5 Permissible operating voltage ..................................................................................................57
4.2.6 Minimum load current ..............................................................................................................57
4.3 Load feeders - protection against short circuit ..........................................................................58
4.3.1 Protection against short circuit .................................................................................................58
4.3.2 Configuration of load feeders ...................................................................................................58
4.3.3 Configuration of a load feeder with 3RM1 motor starter in compliance with IEC .......................58
4.3.3.1 Fuseless design ......................................................................................................................59
4.3.3.2 Fused design ..........................................................................................................................61
4.3.4 Configuration of a load feeder with 3RM1 motor starter in compliance with UL .........................62
4.3.4.1 Function according to UL 508 ..................................................................................................62
4.3.4.2 SCCR short circuit current ratings............................................................................................62
4.3.4.3 Fuses and circuit breakers ......................................................................................................63
4.4 Infeed for the main circuit ........................................................................................................64
4.4.1 Infeed options .........................................................................................................................64
4.4.2 3RM19 3-phase infeed system ................................................................................................65
4.5 Configuration with device connectors ......................................................................................67
4.5.1 Configuration with device connectors ......................................................................................67
4.6 Examples/applications .............................................................................................................67
4.6.1 Operation with the EMERGENCY-STOP function ....................................................................67
5 Mounting .................................................................................................................................... 71
5.1 Warning notices ......................................................................................................................71
5.2 Mounting the devices on a level surface ..................................................................................72
5.3 Disassembling the devices from a level surface .......................................................................73
5.4 Mounting the devices on a standard mounting rail ...................................................................74
5.5 Disassembling devices from a standard mounting rail ..............................................................75
5.6 Mounting the devices with device connectors on a standard mounting rail ...............................76
5.7 Disassembling the devices with device connectors from a standard mounting rail ....................78
5.8 Mounting the devices with device connectors on a wall ............................................................81
5.9 Disassembling the devices with device connectors from a wall ................................................83
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5.10 Mounting the sealable cover ................................................................................................... 85
6 Connection ................................................................................................................................. 87
6.1 Connecting the screw-type terminals ...................................................................................... 87
6.2 Disconnecting the screw-type terminals .................................................................................. 89
6.3 Connecting the push-in terminals............................................................................................ 90
6.3.1 Wiring rules for spring-loaded terminals (with push-in technology) .......................................... 90
6.3.2 Connecting the push-in terminals............................................................................................ 91
6.4 Disconnecting the push-in terminals ....................................................................................... 93
6.5 Attaching the terminals ........................................................................................................... 94
6.6 Removing the terminals .......................................................................................................... 95
6.7 Connecting the infeed system (option) .................................................................................... 96
7 Operator control and monitoring .................................................................................................... 99
7.1 Operator controls ................................................................................................................... 99
7.1.1 Parameterizing the 3RM1 motor starter ................................................................................ 100
7.1.2 Setting the rated operational current ..................................................................................... 100
7.1.3 Setting the RESET method ................................................................................................... 100
7.2 Displays and location of the connections .............................................................................. 103
7.2.1 Alarms, faults and system events ......................................................................................... 106
7.2.1.1 LEDs .................................................................................................................................... 106
7.2.1.2 Status indicators of the 3RM1 motor starter .......................................................................... 106
7.2.1.3 Signaling faults on external I/O ............................................................................................. 108
7.2.1.4 Fault rectification .................................................................................................................. 108
8 Service and maintenance ........................................................................................................... 111
8.1 Maintenance and service ...................................................................................................... 111
8.2 Device replacement .............................................................................................................. 112
9 Technical data .......................................................................................................................... 113
9.1 Motor starters ....................................................................................................................... 113
9.1.1 General technical specifications ........................................................................................... 113
9.1.2 Electromagnetic compatibility (EMC) .................................................................................... 115
9.1.3 Control circuit ....................................................................................................................... 117
9.1.4 Main circuit ........................................................................................................................... 120
9.1.5 Safety data ........................................................................................................................... 121
9.1.5.1 General safety data .............................................................................................................. 121
9.1.5.2 ATEX-specific safety data..................................................................................................... 122
9.1.6 Connection cross sections .................................................................................................... 123
9.1.7 Number of starting operations............................................................................................... 124
9.1.8 Overload protection/device protection characteristic ............................................................. 125
9.2 Infeed system for 3RM1 motor starter ................................................................................... 128
9.2.1 General technical data.......................................................................................................... 128
10 Dimension drawings .................................................................................................................. 129
10.1 3RM1 dimension drawings ................................................................................................... 129
10.2 Dimension drawings for 3RM1 device connectors ................................................................. 132
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11 Circuit diagrams ......................................................................................................................... 137
11.1 3RM10 circuit diagrams (direct-on-line starter, Standard).......................................................137
11.2 3RM11 circuit diagrams (direct-on-line starter, Failsafe).........................................................139
11.3 3RM12 circuit diagrams (reversing starter, Standard) ............................................................140
11.4 3RM13 circuit diagrams (reversing starter, Failsafe) ..............................................................142
A Typical circuits ........................................................................................................................... 143
A.1 Typical circuits for 3RM1 Standard ........................................................................................143
A.1.1 Direct-on-line starter 24 V DC with switch operation ..............................................................143
A.1.2 Direct-on-line starter 24 V DC with switch operation and 230 V brake ....................................144
A.1.3 Direct-on-line starter 24 V DC with switch operation and 400 V brake ....................................145
A.1.4 Direct-on-line starter 24 V DC with switch operation and single-phase motor .........................146
A.1.5 Direct-on-line starter with group protection, 24 V DC and PLC operation ................................148
A.1.6 Reversing starter 24 V DC with PLC operation ......................................................................149
A.2 Typical circuits for 3RM1 Failsafe ..........................................................................................150
A.2.1 General safety notes .............................................................................................................150
A.2.2 3SK1 safety relay with 3RM13 motor starter via device connector .........................................153
A.2.3 3SK1 safety relay wired with 3RM13 motor starter .................................................................155
A.2.4 3RM13 reversing starter with PLC control, F-DO pp-switching ...............................................157
A.2.5 3RM13 reversing starter with PLC control, F-DO pm-switching ..............................................159
B Directives .................................................................................................................................. 161
B.1 ESD Guidelines .....................................................................................................................161
C Correction sheet ........................................................................................................................ 163
Glossary ................................................................................................................................... 165
Index ........................................................................................................................................ 169
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1
1.1
Responsibility of the user for system configuration and functionality
The SIRIUS 3RM1 motor starters described here have been developed to carry out
switching functions as part of a plant or machine.
The 3RM1 motor starters are available as direct-on-line starters in Standard design without
safety-related shutdown (3RM10) and in Failsafe design with safety-related shutdown
(3RM11 Failsafe), and also as reversing starters without safety-related shutdown (3RM12)
and in Failsafe design with safety-related shutdown (3RM13 Failsafe).
The following must be noted when using 3RM11 Failsafe/3RM13 Failsafe safety-related
motor starters:
A complete safety system consists of sensors, evaluation units, signaling devices and
methods for safety-related shutdown.
The manufacturer is responsible for ensuring safe overall functioning of a plant or machine
with safety-related components.
Siemens AG, its regional offices, and associated companies (hereinafter referred to as
"Siemens") cannot guarantee all the properties of an overall installation or machine that has
not been designed by Siemens.
Nor can Siemens assume liability for recommendations that appear or are implied in the
following description. No new guarantee, warranty, or liability claims beyond the scope of the
Siemens general terms of supply are to be derived or inferred from the following description.
1.2
Required basic knowledge
A general knowledge of the following areas is needed in order to understand this manual:
● Industrial controls
● Digital circuitry
● Automation technology
● Safety engineering
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Introduction
1.3 Scope
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1.3
Scope
This manual is valid for SIRIUS 3RM1 motor starters. It contains a description of the motor
starter and its functions. It provides information about configuration, commissioning and
servicing. You will also find information on the infeed system, device connectors and further
accessories in the manual.
To facilitate configuration, the manual contains dimension drawings, circuit diagrams and
technical data of the system components.
SIEMENS reserves the right of including a Product Information for each new component,
and for each component of a later version.
1.4
Definition
In this manual, "3RM1 motor starter" always refers to all variants of the SIRIUS 3RM1 motor
starters.
1.5
Conformity
Standards
All 3RM1 motor starters comply with the following standards:
● IEC 60947-4-2:2011-05
● IEC 60947-4-3:2011-07
The 3RM11 Failsafe and 3RM13 Failsafe motor starters also comply with the following
standards:
● EN 62061: 2005
● EN ISO 13849-1:2008
● IEC 61508-1:2010
● IEC 61508-2:2010
● IEC 61508-3:2010
Approvals, test reports, characteristics
Confirmation of approvals, test certificates and characteristic curves is available via the
Internet (http://www.siemens.com/industrial-controls/approvals).
Page 11
Introduction
1.6 Further documentation
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11
Degree of protection
The 3RM1 motor starter's degree of protection is IP20.
The infeed system for the 3RM1 motor starter features IP20 degree of protection.
DANGER
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Hazardous electrical voltage can cause electric shock, burns and damage.
To ensure protection against an electric shock hazard with the hinged cover open at the
signaling contacts 95, 96, 98 at a voltage of ≥ 50 V, screw in all terminal screws that are not
needed to clamp conductors.
1.6
Further documentation
Further documents that might be of interest for your configuration:
Title of the manual
Order number1)
3SK1 safety relays 3ZX1012-0SK11-0AC0
1)
The manuals are available in the Service&Support Portal for downloading free of charge.
1.7
Service&Support
Online Support
The Online Support in the Service&Support portal is an extensive information system for all
questions relating to Siemens products and solutions. This service enables direct and central
access to in-depth information concerning the products, systems and applications for
industry and to a large number of programming, configuration and application examples. Its
content is available via a mobile app.
The Technical Forum of the Online Support provides the opportunity for users to swap
information. Support Request allows contact to be established with Siemens experts in
Technical Support.
Siemens Industry Online Support ensures that users in industry are always kept up-to-date
with news, software updates and announcements by means of newsletters and Twitter.
Links:
Service&Support Portal (http://www.support.automation.siemens.com), Online
Support (http://support.automation.siemens.com/WW/view/en/16605022)
Page 12
Introduction
1.7 Service&Support
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Product Support
Are you looking for product information such as technical data, updates or FAQs? Here, the
"Product Support" section of the Service & Support Portal offers an extensive collection of all
information about the Siemens Industry Automation and Drive Technologies products and
solutions:
● Answers to frequently asked questions (FAQs)
● Updates/upgrades, service packs and support tools for downloading
● Manuals and operating instructions
● Technical data/CAx data
● Approvals and certificates
● Test certificates and characteristic curves
All Product Support information is at your disposal free of charge and around the clock, and
you always get the current version.
Link:
Product Support (http://support.automation.siemens.com/WW/view/en/4000024)
CAx data
The CAx Download Manager provides you with a simple means of gaining access to up-todate product data for your CAx or CAe system.
You configure your own download package with just a few clicks. You can choose from the
following information for products:
● Product images
● 2D dimensional drawings
● 3D models
● Internal circuit diagrams
● EPLAN macro files
● Manuals
● Characteristics
● Operating instructions
● Certificates
● Product master data
Link:
CAx Download Manager
(http://support.automation.siemens.com/WW/view/en/42455541)
Page 13
Introduction
1.7 Service&Support
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13
Applications & Tools
Applications & Tools supports you with various tools and examples when it comes to solving
your automation tasks. Solutions are presented in interaction with several components in the
system, without focusing on individual products.
● Application examples
● Function blocks & tools
● Background and system descriptions
● Performance statements
● Demonstration systems/videos
Link:
Applications & Tools (http://support.automation.siemens.com/WW/view/en/20208582)
My Documentation Manager
My Documentation Manager enables you to compile your own documentation from our
standard documents (manuals), which are located in the Product Support section. Under
mySupport, you have the opportunity to create and manage you own compilations in a
structure of their own.
Link:
MyDocumentationManager (http://support.automation.siemens.com/WW/view/en/38715968)
Reference
You can find further information on structure and navigation in Online Support here
(http://support.automation.siemens.com/WW/view/en/11774658).
Configurator
Various configurators are available on the Internet to assist you with configuration.
The configurator for 3RM1 motor starters and matching accessories is an easy-to-use
selection and configuration tool. You can select the individual components and plan your
system in accordance with your specific requirements. You can save your selection, export it
as a text file or you can order it directly.
The configurator automatically compiles a document list of the information available in
Service&Support for every component. You can use it as the basis for putting together your
system documentation.
Link:
Configurator (http://www.siemens.com/industrial-controls/configurators)
Page 14
Introduction
1.8 DataMatrix code
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1.8
DataMatrix code
A DataMatrix code is lasered on the lower terminal cover of all 3RM1 motor starters.
DataMatrix codes are standardized in ISO/IEC 16022. The DataMatrix codes on Siemens
devices use ECC200 coding for powerful error correction.
The following device information is encoded in the DataMatrix codes as a bit stream:
● Order number
● Serial number
● MAC address, if applicable
This information is stored in the following format in the DataMatrix code:
1P Order number + S serial number
(+ 23S MAC address)
Data identifier Net content Separator
Note
The information content is displayed without spaces.
This machine-readable information simplifies and accelerates handling of the respective
devices.
As well as fast access to the serial numbers of the respective devices for unique
identification, the DataMatrix codes simplify communication with Siemens Technical Support.
Page 15
Introduction
1.9 Correction sheet
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15
SIEMENS Industry Support App
The DataMatrix codes enable in particular extremely fast and convenient access to all the
device-specific information available on an order number in the SIEMENS Service&Support
Portal, such as operating instructions, manuals, data sheets, FAQs, etc.
We offer the SIEMENS Industry Support App free for this purpose. This can be used on
commercially available smartphones and tablet PCs.
The SIEMENS Industry Support App is available for iOS and Android-based terminal devices
and can be accessed via the following links:
Link for Android Link for iOS
1.9
Correction sheet
The appendix to this manual contains a correction sheet for evaluation and feedback. Please
use it to record your suggestions for improvements, additions and corrections, and return the
sheet to us. This will help us to improve the next edition of the manual.
Thank you.
Page 16
Introduction
1.9 Correction sheet
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2
2.1
General safety notes
DANGER
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Hazardous electrical voltage can cause electric shock, burns and damage.
To ensure protection against an electric shock hazard with the hinged cover open at the
signaling contacts 95, 96, 98 at a voltage of ≥ 50 V, screw in all terminal screws that are not
needed to clamp conductors.
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Turn off and lock out all power supplying this device before working on this device.
CAUTION
Protection against electrostatic charge
When handling and installing the 3RM1 motor starters, ensure that the components are
protected from electrostatic charge. Changes to the system configuration and wiring are
only permissible after disconnection from the power supply.
2.2
Safety information for hazardous areas
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Installation of the motor starters in hazardous areas
The components of the 3RM1 motor starters are not suitable for installation in Class I and
Class II Hazardous Locations.
Please contact your ATEX specialist.
You will find additional information in Chapter "ATEX-certified motor overload protection in
the case of 3RM11/3RM13 Failsafe (Page 32)."
Page 18
Product-specific safety information
2.3 Safety instructions for safety-related applications
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2.3
Safety instructions for safety-related applications
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Turn off and lock out all power supplying this device before working on this device.
WARNING
Function test interval for 3RM11/3RM13 Failsafe motor starters
In continuous operation, the key safety values apply in the case of a function test interval
(state change of the outputs) ≤ 1 year.
Annual function test
• Actuate the connected sensors.
• Check their effect on the safety relay and the downstream actuators.
• Activate the safety relay via the connected sensors.
• Check their effect on the safety relay and the downstream actuators.
• Defective devices must be replaced.
WARNING
Bypassing the safety function in the event of a fault in the case of 3RM11/3RM13 Failsafe
motor starters with 110 to 230 V AC/110 V DC control supply voltage
The control signal for the control inputs in the case of 3RM11/3RM13 Failsafe motor
starters with 110 to 230 V AC control supply voltage must come from A1. Otherwise, the
safety function is bypassed in the event of a fault. Thus, only relay outputs are admissible
when using a PLC.
Do not use a separate control voltage. Only use the relay outputs when using a PLC.
WARNING
Bypassing the safety function when using device connectors
When operating with a 3SK1 safety relay and a device connector, the supply voltage for
3RM1 motor starters is established via the device connectors.
In this case, do not connect anything to terminals A1 and A2 of the 3RM1 motor starters, in
order to prevent bypassing of the safety function.
Page 19
Product-specific safety information
2.4 Intended use
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19
WARNING
Failure of the safety function during hybrid operation of Failsafe and Standard motor
starters
Hybrid operation of 3RM10/3RM12 Standard motor starters with 3RM11/3RM13 Failsafe
motor starters in safety-related applications is not admissible.
Only ever use safety-related motor starters (3RM11 Failsafe and 3RM13 Failsafe) in safetyrelated applications.
Note
SILCL 3 to EN 62061:2005, PL e/Cat. 4 to EN ISO 13849-1:2008
The 3RM11 Failsafe and 3RM13 Failsafe safety-related motor starters are designed in such
a way as to allow implementation of safety-related applications up to SILCL 3 in accordance
with EN 62061 and PL e/Cat. 4 in accordance with EN ISO 13849-1.
Note
Use of PELV/SELV power supply units
Power to the 3RM11 Failsafe and 3RM13 Failsafe safety-related motor starters must be
supplied from PELV/SELV power supply units.
2.4
Intended use
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Proper use of hardware products
This equipment is only allowed to be used for the applications described in the catalog and
in the technical description, and only in conjunction with non-Siemens equipment and
components recommended by Siemens.
Correct transport, storage, installation and assembly, as well as careful operation and
maintenance, are required to ensure that the product operates safely and without faults.
EU note: Commissioning is absolutely prohibited until it has been ensured that the machine
in which the component described here is to be installed complies with the stipulations of
the Directive 2006/42/EC.
Page 20
Product-specific safety information
2.5 Current information about operational safety
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2.5
Current information about operational safety
Important note for maintaining operational safety of your system
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Please take note of our latest information
Systems with safety-related characteristics are subject to special operational safety
requirements on the part of the operator. The supplier is also obliged to comply with special
product monitoring measures. For this reason, we publish a special newsletter containing
information on product developments and features that are (or could be) relevant to
operation of safety-related systems. By subscribing to the appropriate newsletter, you will
ensure that you are always up-to-date and able to make changes to your system, when
necessary:
Siemens newsletter (http://www.industry.siemens.com/newsletter)
Sign on to the following newsletter under "Products & Solutions":
• Control Components and System Engineering News
• Safety Integrated Newsletter
2.6
Declaration of conformity
The manufacturer declares that the safety components of the 3RM1 motor starter series in
the designs marketed by us comply with the applicable basic health and safety requirements
of the EC Directives* stated (including amendments), and that the stated standards* were
applied in their design and construction.
* You can download the complete EC Declaration of Conformity from the Internet
(http://www.siemens.com/industrial-controls/approvals) as a PDF.
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3
3.1
Overview
The 3RM1 motor starter is a compact device with a width of 22.5 mm. The 3RM1 motor
starter comprises combinations of relay contacts, power semiconductors, and a solid-state
overload relay for switching three-phase motors up to 3 kW (at 400 V) and resistive loads up
to 10 A (at AC voltages to 500 V) under normal operating conditions.
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Description
3.2 Applications
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3.2
Applications
The 3RM1 motor starters can be used wherever combinations of contactors and overload
relays were previously used.
Thanks to the additional functionality of safety-related shutdown, the 3RM11 Failsafe and
3RM13 Failsafe motor starter variants are ideally suited to safety-related applications up to
SILCL 3 in accordance with EN 62061 and PL e/Cat. 4 in accordance with EN ISO 13849-1.
Short-circuit protection in a load feeder designed in this way must be implemented by
appropriate upstream short-circuit protection devices. These can be, for example, circuit
breakers or appropriate fuses.
You achieve maximum space-savings benefits by means of a group configuration of the
3RM1 motor starters. This enables several 3RM1 motor starters to be protected by one
short-circuit protection device.
The 3RM1 motor starters are used in the following areas, for example:
● Conveyor technology
● Logistics systems
● Production machines
● Machine tools
● Small elevators
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Description
3.3 Hybrid technology
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3.3
Hybrid technology
The 3RM1 motor starter combines the benefits of semiconductor technology and relay
technology.
This combination is known as hybrid technology. The hybrid technology in the 3RM1 motor
starter is characterized by the following features:
Switching on
The inrush current in the case of motorized loads is conducted briefly via the
semiconductors.
Advantage: The relay contacts are protected. Longer service life is achieved thanks to
reduced wear and tear.
Current conducting
The continuous current is conducted via relay contacts.
Advantage: Relay contacts cause less thermal losses than semiconductors.
Switching off
Switch-off is implemented again via the semiconductor.
Advantage: The contacts are only slightly burdened by arcs. This results in increased service
life.
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Description
3.4 Device versions
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3.4
Device versions
The 3RM1 motor starters are characterized by their compact design and narrow width.
They can be used for easy assembly of fuseless load feeders with SIRIUS motor starter
protectors. Alternatively, combinations with fuses or other short-circuit protection devices are
possible.
This allows implementation of load feeders with coordination type 1 for short-circuit currents
of up to 55 kA at 400 V.
The 3RM1 motor starters are available in four different versions:
Motor starter version
3RM10
3RM11
3RM12
3RM13
Product symbol
Direct-on-line starter ✓ ✓ - Reversing starter - - ✓ ✓
Overload protection with wide setting range ✓ ✓ ✓ ✓
ATEX certification overload protection - ✓ - ✓
Safety-related shutdown up to SILCL 3 to EN 62061, PL e/Cat. 4 to
EN ISO 13849-1
- ✓ - ✓
Connection systems
The 3RM1 motor starters are optionally available with screw connections or push-in
connections.
Push-in connections are a form of spring-loaded terminals allowing fast wiring without tools
for rigid conductors or conductors equipped with end sleeves. For wiring finely-stranded or
stranded conductors without end sleeves on push-in connections, a screwdriver (with
3.0 x 0.5 mm blade) is required. A screwdriver (with 3.0 x 0.5 mm blade) is also required to
disconnect a conductor.
The advantages of the push-in terminals are found, as with all spring-loaded terminals, in
speed of assembly and disassembly and vibration-proof connection. There is no need for the
checking and tightening required with screw connections.
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Current ranges
The 3RM1 motor starters are designed for the following rated operational currents of the
loads:
Versions
Adjustable response value current
[A]
Maximum permissible motor power
at 400 V AC [kW]
3RM1.01-..... 0,1 ... 0,5 0,12
3RM1.02-..... 0,4 ... 2 0,75
3RM1.07-.....* 1,6 ... 7 3
* The versions of the 3RM1.07-..... motor starter are also suitable for operating resistive loads (e.g.
heaters) up to a rated operational current of I
AC51
= 10 A.
Control supply voltages
The 3RM1 motor starters are designed for the following control supply voltages:
Versions
Control supply voltage
3RM1...-.AA0. 24 V DC
3RM1...-.AA1. 110 … 230 V AC 50/60 Hz; 110 V DC
Note the following information for the different device versions:
Note
3RM10/3RM12
Standard motor starters
with 24 V DC control supply voltage
The same voltage source (potential) must be used for the control supply voltage and the
control inputs.
The reference point for the control inputs is terminal A2.
Note
3RM10/3RM12 Standard motor starters with 110 to 230 V AC/110 V DC control supply
voltage
The same voltage source (potential) must be used for the control supply voltage and the
control inputs.
The reference point for the control inputs is terminal A2.
When controlling with a PLC, control must be via relay outputs.
There must be no parallel load (e.g. a lamp) connected at the control inputs in the case of
motor starters with the product version E01.
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Note
3RM11/3RM13 Failsafe motor starters with 24 V DC control supply voltage
The control inputs are electrically isolated from the control supply voltage (A1, A2).
The terminals M1 and M2 are the reference point for the control inputs.
For controlling the control inputs, e.g. via the digital outputs of a PLC, a voltage from an
SELV/PELV Class 2 supply is required.
Note
3RM11/3RM13 Failsafe motor starters with 110 to 230 V AC/110 V DC control supply
voltage
The same voltage source (potential) must be used for the control supply voltage and the
control inputs in safety-related applications.
The reference point for the control inputs is terminal A2.
When controlling with a PLC, control must be via relay outputs.
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3.5
Functions
3.5.1
Switching the 3RM1 motor starter under normal operating conditions
A typical application area of the 3RM1 motor starter is the switching and protection of
motors. You can also operate the 3RM1 motor starter on resistive loads such as heaters.
Note
Minimum loads must be observed for the 3RM1 motor starters.
You will find additional information in the chapter "Minimum load current (Page 57)".
NOTICE
Damage from operating capacitive loads
When using capacitive loads, the switching components in the 3RM1 motor starter can be
damaged by excessively high making currents.
Do not operate capacitive loads such as frequency converters on the 3RM1 motor starter.
Operation of single-phase capacitor motors is admissible.
NOTICE
Damage during operation on non-sinusoidal voltages
When operating frequency converters, the switching components in the 3RM1 motor starter
can be damaged by non-sinusoidal voltages.
Do not operate the 3RM1 motor starter on outputs of frequency converters.
3.5.1.1
Direct-on-line starter
Using the 3RM1 motor starter as a direct-on-line starter
All 3RM1 motor starters can be used as direct-on-line starters.
To switch the 3RM1 motor starter on, apply the control voltage at input IN1.
After the motor is switched off, the motor starter accepts a new start after 500 ms.
You can also use the versions of the 3RM1 motor starter with a rated operational current up
to 7 A for switching resistive loads up to I
AC51
= 10 A under normal operating conditions.
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3.5.1.2
Reversing starter
Using the 3RM1 motor starter as a reversing starter
The 3RM12 and 3RM13 motor starters can be used as reversing starters.
The reversing starter starts the motor when the control voltage is applied at input IN1 in
direction of rotation 1 (no phase swapping), when controlling input IN2 in direction of
rotation 2 (phase change from L1 and L3).
Interlocking of the control inputs
After the motor is switched off, the motor starter accepts a new start after 500 ms.
If you apply control inputs IN1 and IN2 simultaneously, control input IN1 has priority. The
motor starts up in this direction of rotation.
When the motor is running, activation of the second input has no effect.
The figure below shows an example of the effects of the signals at the control inputs on the
direction of rotation of the motor:
1 Controller 1 active
2 Motor ON
1-2 Switch-on delay
3 Control input 1 inactive
4 Motor OFF
3-4 Switch-off delay
5 With simultaneous activation of the control inputs, the motor is started in the clockwise
direction.
6 Additional activation of the second control input has no influence.
7-8 After motor OFF, the motor starter accepts a new start (motor ON) after 500 ms.
Note
Please observe the information about the control supply voltage and the control inputs in the
chapter "Device versions (Page 24)".
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3.5.2
Overload protection
3.5.2.1
Protective functions
Overload protection
The 3RM1 motor starter protects three-phase motors against overload. If the current
exceeds the set value, the 3RM1 motor starter switches off within the specified tripping time
and signals the fault via the LEDs and the fault signaling output. You will find the tripping
characteristic in the chapter "Overload protection/device protection characteristic
(Page 125)".
Note
ATEX-certified motor overload protection in the case of 3RM11/3RM13 Failsafe
Overload protection of safety-related 3RM11 Failsafe and 3RM13 Failsafe motor starters is
ATEX-certified up to SILCL 2; see Section "ATEX-certified motor overload protection in the
case of 3RM11/3RM13 Failsafe (Page 32)".
Equipment protection
In addition to the motor protection function, the 3RM1 motor starters also protect themselves
against overload. This means that in the case of 3RM1 motor starters with a rated
operational current of 7 A, an overload trip may occur in the upper current range before the
motor protection trips.
If, for example, 8-fold current flows in the case of an unloaded motor memory module and a
set current of 7 A, tripping takes place after approximately one second.
You will find the tripping characteristic in the chapter "Overload protection/device protection
characteristic (Page 125)".
Phase failure protection
The 3RM1 motor starter is provided with phase failure protection to prevent excessive
temperature rise in the load in double phasing if phase failure occurs.
Depending on whether the phase failure already occurs before the ON command or during
the ON state, the devices respond as described in the table and signal a phase failure.
Standard motor starters
3RM10/3RM12
Failsafe motor starters
3RM11/3RM13
Phase failure before the ON
command
The motor starter switches off
after 5 s.
The motor starter does not
switch on.
Phase failure during the ON
state
The motor starter switches off
after 5 s.
The motor starter switches off
after 5 s.
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The fault state is indicated by LEDs and the fault signaling output.
NOTICE
Damage due to asymmetrical current consumption by built-in brakes
When connecting and operating motors with built-in brakes, the energy for releasing the
brakes is taken from the motor connection cables. This can result in substantial asymmetry
in power consumption.
Observe the following measures for all 3RM1 motor starters:
• If the current for the braking facility is taken from two phases, connect the motor cables
that are additionally loaded with braking current to terminals T1 and T3. Observe the
additional braking current when setting the motor current.
• Alternatively, the braking facility can be fed externally.
A further braking facility is possible for 3RM10 and 3RM12 Standard motor starters:
• If the current for the braking facility is taken from just one phase and the neutral
conductor, connect the motor cable that is loaded with the braking current to terminal T2
of the motor starter.
Do not use 3RM11 Failsafe and 3RM13 Failsafe motor starters for such braking
facilities.
NOTICE
Damage from incorrect connection
Incorrect connection of the motor can result in damage.
Connect the motor as specified in the typical circuit diagrams.
You can find circuit diagrams for operating motors with brakes in the chapter "Typical circuits
(Page 143)".
3.5.2.2
Thermal calculation method (motor memory module)
Principle of operation
The electronics continuously calculate a model of the thermal load on the motor dependent
on the operating time and the current load. The motor memory module charges when the
motor is switched on. The motor memory module discharges after the motor is switched off.
Following an overload tripping operation, the motor memory module is fully discharged after
approximately three minutes. You must wait for this cooling time to elapse before you can
acknowledge the fault. If the control supply voltage fails, the 3RM1 motor starter stores the
remaining cooling time. When the control supply voltage is restored, the remaining cooling
time elapses before the motor can be switched on again.
If you initiate a restart within a very short time after switching off the motor, it may be that the
motor memory module has not yet fully discharged. This can result in an extremely fast
overload trip after the restart. During continuous operation ("Warm" motor memory module),
tripping times are reduced depending on the prior load.
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If voltage is present at terminals A1/A2 and at control inputs IN1/IN2 after resetting the
overload trip, the 3RM1 motor starter restarts.
The rated current of 10 A must not be set for motorized loads but only for resistive loads. In
this setting, the tripping characteristics deviate from Class 10A; see Chapter "Overload
protection/device protection characteristic (Page 125)".
You can find information about typical switching frequencies in Chapter "Number of starting
operations (Page 124)".
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Health hazard from automatic hot restart
If the DEVICE LED shows a yellow light and the FAILURE LED a red light, and a manual
RESET or auto RESET takes place following an overload trip, the machine starts up
immediately if there is a control command at IN1/IN2. Personnel in the danger area can be
injured.
Make sure that the danger area of the machine is kept clear of people.
Reset in manual operation
If the RESET method is set to manual RESET, acknowledge an overload trip as follows:
1. Wait for the cooling time to elapse.
2. Press the "TEST/RESET/RESET MODE" button to acknowledge.
As an alternative, in the case of the 3RM10/3RM12 Standard motor starters, you can use
the RESET control input IN3 for acknowledgement.
Note
If you briefly switch the control supply voltage off and on again, there is no automatic
acknowledgment.
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3.5.2.3
ATEX-certified motor overload protection in the case of 3RM11/3RM13 Failsafe
Standards
Increased danger in hazardous areas means it is necessary to carefully observe the
following standards:
●
EN 60079-14 / VDE 0165-1
Electrical apparatus for explosive gas atmospheres.
●
EN 60079-17
Inspection and maintenance of electrical installations in hazardous areas.
●
EN 50495
Safety devices required for the safe functioning of equipment with respect to
explosion risks.
Certification of 3RM11/3RM13 Failsafe motor starters
The 3RM11 Failsafe and 3RM13 Failsafe motor starters are approved under Device
Group II, Category (2) in the area "GD" (areas in which explosive gas, steam, mist, air
mixtures and combustible dust are present):
*) For the px applications, pressure and flow rate monitoring are additionally required for the
overpressure encapsulation systems.
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Danger due to incorrect behavior
All work involved in connecting, commissioning and maintenance must be carried out by
qualified personnel.
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Control cabinet degree of protection in hazardous areas
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
The 3RM1 motor starter is not suitable for installation in hazardous areas.
The device must be installed in a control cabinet with the minimum degree of protection of
IP 4x.
Equipment protection
In addition to the motor protection function, the 3RM1 motor starters also protect themselves
against overload. This means that in the case of 3RM1 motor starters with a rated
operational current of 7 A, an overload trip may occur in the upper current range before the
motor protection trips.
If, for example, 8-fold current flows in the case of an unloaded motor memory module and a
set current of 7 A, tripping takes place after approximately one second.
You will find the tripping characteristic in the chapter "Overload protection/device protection
characteristic (Page 125)".
Setting the rated motor operational current
Set the 3RM1 motor starter to the rated motor operational current (according to the type
plate or design test certificate of the motor).
On this topic, refer to the Chapter "Setting the rated operational current (Page 100)".
Note
Observe the trip class or the tripping characteristic of the 3RM1 motor starter in Chapter
"Overload protection/device protection characteristic (Page 125)". The motor and cables
must be designed for the selected trip class.
RESET settings
Note
Restriction in the hazardous area
In applications for the protection of motors in hazardous areas, a 3RM11/3RM13 Failsafe
motor starter may only be operated with the "Manual RESET" setting. The "RESET Mode"
LED must be off.
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Short-circuit protection
Short-circuit protection must be handled by separately arranged overcurrent protection
devices.
On this topic, refer to the Chapter "Load feeders - protection against short circuit (Page 58)".
Cable protection
Avoid impermissibly high cable surface temperatures by correctly dimensioning the cross
sections. Select an adequate cable cross-section.
Cyclic test of the protection functions
The tests are run by means of the "TEST/RESET/RESET MODE" button and can take place
when the motor is either on or off. The test consists of three function tests.
Carry out the tests during commissioning
and cyclically every 36 months at the latest.
You will find out how to run the test in Chapter "Carrying out the function test (Page 39)".
Ambient conditions
See the chapter "Ambient conditions (Page 56)".
ATEX-specific safety data
The motor protection function according to ATEX in the case of 3RM11/3RM13 motor
starters has the following safety data:
Safety integrity level (SILCL) 2
Hardware fault tolerance (HFT) 0
Interval for testing the protective functions 3 years
Probability of failure on demand (PFD) 5x10-4
Probability of a dangerous failure per hour (PFH) 5x10-8 1/h
Note
See the data sheet for other specifications. You will find the data sheet in Service&Support
(http://www.siemens.com/industrial-controls/support).
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Maintenance and repairs
These devices are maintenance-free.
Note
Repairs to the device may only be carried out by the manufacturer.
Warranty
NOTICE
To meet the conditions of the warranty, you must observe the safety and commissioning
instructions.
Further information
You will find further information on the Internet at
● Internet (http://www.siemens.com/sirius)
● Information and Download Center (http://www.siemens.com/sirius/infomaterial)
● Product and Information System (ProdIS) (http://www.siemens.com/sirius/support)
● Service and Support (http://www.siemens.com/sirius/technical-assistance)
● Certificates (http://www.siemens.com/sirius/approvals)
3.5.3
Shutdown on malfunction
Shutdown via integrated monitoring
The 3RM1 motor starter has integrated monitoring of the main circuit components. During
operation, the 3RM1 motor starter detects when a switching element fails to switch, or when
a phase has failed.
Monitoring before switching on in the case of 3RM11/3RM13 Failsafe motor starters
In the case of the 3RM11 Failsafe and 3RM13 Failsafe motor starters, monitoring prevents
the load from switching on in the case of the following malfunctions:
● Damage to the power semiconductors
● Damage to the relay contacts
● Faults in the control electronics
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Acknowledging
A malfunction is acknowledged by switching the control supply voltage back on and then
pressing the "TEST/RESET/RESET MODE" pushbutton.
Note
If a malfunction is repeatedly indicated, the 3RM1 motor starter is defective and must be
replaced.
Safety-related shutdown in the case of 3RM11/3RM13 Failsafe motor starters
Safety-related shutdown is achieved for the 3RM11 Failsafe and 3RM13 Failsafe motor
starters thanks to the special arrangement and checking of the switching elements. Safetyrelated shutdown takes place when the control supply voltage is deactivated or by switching
off the control inputs. Malfunctions result in automatic shutdown. You will find additional
information in Chapter "Safety-related shutdown with 3RM11/3RM13 Failsafe motor starters
(Page 36)."
Display concept
The following events indicate the "Malfunction" status:
● DEVICE LED flashes red
● FAILURE LED shows a red light
● Fault signaling output active
3.5.4
Safety-related shutdown with 3RM11/3RM13 Failsafe motor starters
Safety-related shutdown of 3RM11/3RM13 Failsafe motor starters
In the case of the 3RM11/3RM13 Failsafe motor starters, safety-related shutdown takes
place by removing the control voltage (A1/A2). In the case of units with a 24 V DC supply
voltage, as an alternative safety-related shutdown can take place by removing the ON
command (IN1/IN2).
SILCL 3 to EN 62061, PL e/Cat. 4 to EN ISO 13849-1 can be achieved with both shutdown
methods. To achieve SILCL 3/PL e/Cat. 4 for the safety function, all components of the
safety function (detecting/evaluating/reacting) must be designed accordingly.
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In the case of 3RM11/3RM13 Failsafe motor starters, the OFF state is defined as the safe
state. 3RM11/3RM13 Failsafe motor starters are self-monitoring in compliance with SILCL
3/PL e and therefore do not need to be monitored in the feedback circuit of the upstream
evaluation unit/control.
WARNING
Failure of the safety function
Hybrid operation of 3RM10/3RM12 Standard motor starters with 3RM11/3RM13 Failsafe
motor starters in safety-related applications is not admissible.
Only ever use safety-related motor starters (3RM11 Failsafe and 3RM13 Failsafe) in safetyrelated applications.
Possibilities of interfacing to safety relays/fail-safe controllers
In the case of shutdown by removal of the control voltage, interfacing can take place via the
device connector connected to the 3SK1 safety relay or by wiring a 3RM11/3RM13 Failsafe
motor starter to a safety-related output of a fail-safe controller/evaluation unit.
Several 3RM11/3RM13 Failsafe motor starters can also be connected via device connectors
to one another or can be wired as a group of up to five motor starters to one safety-related
output of a failsafe controller/evaluation unit.
Note
The device connector can only be used in combination with motor starters that have a 24
V DC supply voltage.
Configuration with 3SK1 safety relay using device connectors
When interfaced to the 3SK1 safety relay with device connectors, the 3RM11/3RM13
Failsafe motor starters are shut down by removal of the control supply voltage (L+ and M) by
the 3SK1 safety relay. In this case, nothing may be connected to terminals A1 and A2 of the
3RM1 motor starters.
WARNING
Bypassing the safety function when using device connectors
When operating with a 3SK1 safety relay and a device connector, the supply voltage for
3RM1 motor starters is established via the device connectors.
In this case, do not connect anything to terminals A1 and A2 of the 3RM1 motor starters, in
order to prevent bypassing of the safety function.
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Configuration with 3SK1 safety relay/fail-safe controller by means of wiring
In a configuration without device connectors, the motor starters are interfaced to the 3SK1
safety relay or to the fail-safe controller and safety-related shutdown by means of wiring. If
steps are taken to ensure that the cables are laid in such a way that they are protected
against a cross-circuit/line-to-line fault, safety-related shutdown of A1 (L+) via a safetyrelated output of the control suffices. If this cannot be ensured, or if a PM-switching output is
used, both A1 (L+) and A2 (M) must be shut down via a safety-related output. In both cases,
safety-related shutdown in compliance with SILCL 3 to EN 62061, PL e/Cat. 4 to EN ISO
13849-1 is achieved.
For units with a 24 V DC supply voltage, safety-related shutdown via the IN1 and IN2 inputs
is alternatively possible. Thus, operational switching takes place via the safety-related output
of the fail-safe controller/evaluation unit.
Depending on peripherals used, shutdown is in one or two channels:
● PM (PPM)-switching: shutdown is in two channels.
● PP-switching: shutdown is in one channel.
Single-channel switching achieves SILCL 3 to EN 62061, PL e/Cat. 4 to EN ISO 13849-1
if steps are taken to ensure that the cables are laid in such a way that they are protected
against a cross-circuit/line-to-line fault.
Typical circuits and further information
WARNING
Function test interval for 3RM11/3RM13 Failsafe motor starters
In continuous operation, the key safety values apply in the case of a function test interval
(state change of the outputs) ≤ 1 year.
Annual function test
• Actuate the connected sensors.
• Check their effect on the safety relay and the downstream actuators.
• Activate the safety relay via the connected sensors.
• Check their effect on the safety relay and the downstream actuators.
• Defective devices must be replaced.
You will find typical circuits for safety-related applications of the 3RM11/3RM13 Failsafe
motor starters in combination with 3SK1 safety relays or with interfacing to a fail-safe
controller/evaluation unit in Chapter "Typical circuits for 3RM1 Failsafe (Page 150)".
You can find the technical data for safety applications in Chapter "General safety data
(Page 121)".
You can find more information on the safety relays in the applicable manuals of the devices
on the Internet; see Chapter "Further documentation (Page 11)".
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3.5.5
Carrying out the function test
You can start the different individual tests for the function test with the
"TEST/RESET/RESET MODE" button.
Procedure
Depending on how long the "TEST/RESET/RESET MODE" button is pushed, a specific test
is started:
Actuation time for
starting the test
Explanation
< 2 s
LED-Test
All four LEDs are activated.
1)
2 s ... 5 s
Current measuring test
Current measuring is tested in all 3 phases.
> > 5 s
Motor protection test disconnection
The entire control chain is tested, including the switching elements and the fault signaling output.
If the device responds as standard, an overload trip takes place. This can be reset immediately
without a cooling time by pressing the "TEST/RESET/RESET MODE" pushbutton again.
1)
Exception in the case of 3RM11/3RM13 Failsafe motor starters: in the case of 3RM11/3RM13 Failsafe motor starters,
the LED test is only carried out in the OFF state (without load current). In th
e ON state (with load current), the LEDs stay
unchanged.
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Actuation time for
starting the test
Status
OK
Fault
LED test
< 2 s "DEVICE" LED Shows a yellow light1) Off
"FAILURE" LED Shows a red light1) Off
"STATE" LED Shows a green light1) Off
"RESET MODE" button Shows a green light1) Off
Current measuring test
2 s ... 5 s "DEVICE" LED
• Without load current: Flickering red
• With load current: Flashing red
Off
Motor protection trip test
> 5 s "DEVICE" LED Shows a yellow light Flashing red
"FAILURE" LED Shows a red light Shows a red light
Fault signaling output Active Not active
Switching
elements/motor
Deactivated Unchanged
1)
Exception in the case of 3RM11/3RM13 Failsafe motor starters: in the case of 3RM11/3RM13 Failsafe motor starters,
the LED test is only carried out in the OFF state (without load current). In the ON state (with load current), the LEDs stay
unchanged.
Note
If the 3RM1 motor starter does not respond as in the table above during the function test,
check the connections and the supply to the 3RM1 motor starter. If the fault persists after
correct disconnection, the device must be replaced.
Page 41
Description
3.6 Accessories and order number scheme
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41
3.6
Accessories and order number scheme
3.6.1
Overview of all device components
①
Basic unit/expansion unit, e.g. 3RM1 motor starter
②
Top cover flap
③
Bottom cover flap
④
Terminals, 3-pole, push-in, 1 x 2.5 mm²
⑤
Terminals, 3-pole, screw-type, 1 x 2.5 mm²
⑥
Terminals, 3-pole, push-in, 1 x 4 mm²
⑦
Terminals, 3-pole, screw-type, 1 x 4 mm²
For connection, there is an infeed system (not shown in the overview diagram) for these
terminals.
⑧
Coding pins
⑨
Push-in lugs for wall mounting
⑩
Cover
⑪
Device connector
⑫
Device connector
⑬
Device termination connector
⑭
Sealable cover
Page 42
Description
3.6 Accessories and order number scheme
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3.6.2
Accessories
The following accessories are offered for the 3RM1 motor starter:
● Infeed system (Page 42)
● Sealable cover (Page 44)
● Wall fixture (Page 44)
● Device connectors (Page 45)
● Terminals (Page 48)
● Device identification label (Page 48)
3.6.2.1
Infeed system
The infeed system comprises 3-phase busbars, one infeed terminal, and one protective cap
for covering unused connections. The infeed system is suitable for 3RM1 motor starters with
screw connections.
Time-saving wiring between 3RM1 motor starters with screw terminals to the supply
connection is possible thanks to the infeed system with 3-phase busbars.
These busbars are available in three lengths, thus allowing 2, 3 or 5 motor starters (arranged
side-by-side) to be connected at the same time. More than 5 devices can be connected by
clamping the connection tags of an additional busbar rotated by 180° (e.g. 6 devices using
one 5-pole busbar and one 2-pole busbar).
A single motor starter can be removed from the assembly without loosening the terminal
screws of neighboring motor starters.
The maximum summation current must not exceed 25 A (UL: 16 A). Primary infeed is
connected via a three-phase infeed terminal. The three-phase busbars are finger-safe but
empty connection tags must be fitted with covers.
Page 43
Description
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43
Table 3- 1 Order numbers of the infeed system
Description
Order number
3-phase busbar for two 3RM1 motor
starters
3RM1910-1AA
3-
phase busbar for three 3RM1 motor
starters
3RM1910-1BA
3-phase busbar for five 3RM1 motor
starters
3RM1910-1DA
3-phase infeed terminal 3RM1920-1AA
Cover caps for terminal lugs of the 3phase busbars
3RM1910-6AA
Page 44
Description
3.6 Accessories and order number scheme
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3.6.2.2
Sealable cover
The sealable cover prevents unauthorized access to the rotary coding switch.
Table 3- 2 Order number of the sealable cover
Description
Order number
SIRIUS sealable cover 22.5 mm, cutout for pushbuttons at bottom 3ZY1321-2AA00
3.6.2.3
Wall fixture
The wall fixture is inserted into the enclosure at the top and bottom for screw-mounting the
3RM1 motor starter to level mounting surfaces.
Table 3- 3 Order numbers of the push-in lugs for wall mounting
Description
Order number
SIRIUS push-in lugs for wall mounting 3ZY1311-0AA00
Page 45
Description
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45
3.6.2.4
Device connectors
Function
The device connectors can be used to loop through a common control supply voltage of 24 V
DC to reduce wiring complexity between the individual motor starters (3RM1...-.AA04).
Moreover, Failsafe motor starters with a 24 V control supply voltage (3RM11...-.AA04 /
3RM13...-.AA04) can be interfaced to one 3SK1 safety relay as a group via device
connectors.
The device connectors can either be snapped onto a standard mounting rail or can be
screwed onto a flat mounting wall.
If the motor starters are not to be interconnected side-by-side, device daisy chain connectors
must be used for the gaps, e.g. for thermal reasons (see "Derating (Page 51)").
The device connectors do not transfer commands.
Table 3- 4 Order numbers for device connectors for 3RM1 motor starters
Description
Order number
Device connector for 3RM1 motor starters,
22.5 mm wide
3ZY1212-2EA00
Device connector for looping through
signals,
22.5 mm wide
3ZY1212-2AB00
Device termination connector for 3RM1
motor starters,
22.5 mm wide
including left cover for the first device
connector in the system configuration
3ZY1212-2FA00
Use of device connectors exclusively for the 24 V DC control supply voltage
By using device connectors, several 3RM1...-.AA04 motor starters can be jointly supplied
with a control supply voltage of 24 V DC. This requires the control supply voltage to be
applied to the A1 and A2 terminals of only one motor starter.
Up to ten motor starters can be connected to one 24 V DC control supply voltage with device
connectors. The 24 V DC control supply voltage must be within the operating range of 0.9 to
1.1 for this purpose. If the full operating range of 0.8 to 1.25 is to be used, no more than five
3RM1...-.AA04 motor starters can be used. Otherwise, the infeed must be repeated for every
5th 3RM1 motor starter.
The last motor starter in a row can be placed on a device termination connector.
Page 46
Description
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Using device connectors with 3SK1 safety relays
Interconnection of several 3RM11/3RM13 Failsafe motor starters into a group can be used
for joint safety-related shutdown by a 3SK1 safety relay. Safety-related applications up to
SILCL 3 to EN 62061, PL e/Cat. 4 to EN ISO 13849-1 can be realized.
WARNING
Failure of the safety function during hybrid operation of Failsafe and Standard motor
starters
Hybrid operation of 3RM10/3RM12 Standard motor starters with 3RM11/3RM13 Failsafe
motor starters in safety-related applications is not admissible.
Only ever use safety-related motor starters (3RM11 Failsafe and 3RM13 Failsafe) in safetyrelated applications.
3RM1 motor starters are shut down by interrupting the control supply voltage by means of
the 3SK1 safety relay. For this reason, the control supply voltage must not also be applied to
the 3RM1 motor starters.
WARNING
Bypassing the safety function when using device connectors
When operating with a 3SK1 safety relay and a device connector, the supply voltage for
3RM1 motor starters is established via the device connectors.
In this case, do not connect anything to terminals A1 and A2 of the 3RM1 motor starters, in
order to prevent bypassing of the safety function.
Up to five Failsafe motor starters can be operated on one 3SK1 safety relay with device
connectors. With regard to configuration in combination with the 3SK1 safety relays, also pay
attention to the configuration rules in the manual entitled "3SK1 safety relays"; see Chapter
"Further documentation (Page 11)".
The last motor starter in a row must be placed on a device termination connector. This
closes the circuits that were built up with the connectors.
Reference
For additional information on using device connectors, refer to "FAQs on the 3RM1 motor
starter (http://support.automation.siemens.com/WW/view/de/81525494)".
Page 47
Description
3.6 Accessories and order number scheme
SIRIUS 3RM1 motor starter
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47
Overview of all device connectors for 3RM1 motor starters and 3SK1 safety relays
Order number
Type of device connector
Units
3ZY1212-2EA00 Device connector for 3RM1 motor
starters, 22.5 mm wide
• 3RM1 motor starter
3ZY1212-2FA00 Device termination connector for
3RM1 motor starters, 22.5 mm wide
• 3RM1 motor starter
3ZY1212-2AB00 Device connector for looping
through signals, 22.5 mm wide
• 3RM1 motor starter
3ZY1212-1BA00 Device connector for 3SK1 safety
relay, 17.5 mm wide
• 3SK1120 safety relay
• 3SK1220 input expansion
3ZY1212-2BA00 Device connector for 3SK1 safety
relay, 22.5 mm wide
• 3SK1121 safety relay
• 3SK1122 safety relay
• 3SK1211 output expansion
• 3SK1230 power supply
3ZY1212-2DA00 Device termination connector for
3SK1 safety relay, 22.5 mm wide
• 3SK1121 safety relay
• 3SK1122 safety relay
• 3SK1211 output expansion
3ZY1212-0FA01 Device termination connector set
for 3SK1 safety relay, > 45 mm
wide
• 3SK1213 output expansion
Page 48
Description
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3.6.2.5
Terminals
Each 3RM1 motor starter has three main current terminals and three control current
terminals. The terminals can be replaced with ease.
Table 3- 5 Order numbers for the terminals
Description
Order number
Control current
terminals
①
Detachable terminal, 3-pole, screw terminals up to
1x2.5 mm²
3ZY1131-1BA00
Detachable 3-pole terminal,
push-in terminals up to 2x1.5 mm²
3ZY1131-2BA00
Main current
terminals
②
Detachable 2-pole terminal,
screw terminals up to 1x4 mm²
3ZY1122-1BA00
Detachable 2-pole terminal,
push-in terminals up to 1x4 mm² or 2x1.5 mm²
3ZY1122-2BA00
3.6.2.6
Device identification label
Table 3- 6 Order numbers for the device identification labels
Description
Order number
SIRIUS device identification label, titanium gray, 17 mats each with 20
labels for snapping into place, size 20 x 7 mm, in box
3RT2900-1SB20
SIRIUS device identification label, titanium gray, 10 sheets each with
306 adhesive labels, size 19 x 6 mm, in transparent bag
3RT2900-1SB60
Page 49
Description
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49
3.6.3
Order number scheme for SIRIUS 3RM1 motor starter
Digit of the order number
1st - 3rd
❒❒❒
4th ❒ 5th ❒ 6th ❒ 7th ❒ - 8th ❒ 9th ❒ 10th
❒
11th
❒
12th
❒
SIRIUS 3RM1 motor starter 3RM
Generation
(1) ❒
Function
(Direct-on-line starter = 0,
direct-on-line starter Failsafe & ATEX certification = 1;
reversing starter = 2;
reversing starter Failsafe & ATEX certification = 3;
accessories = 9)
❒
Setting range rated motor current
(0.1 ... 0.5 A = 01;
0.4 ... 2.0 A = 02;
1.6 ... 7.0 A = 07)
❒ ❒
Connection type
(screw terminal = 1,
push-in spring-loaded terminal = 2,
hybrid connection method*
)
= 3)
❒
Reserved
(A) ❒
Width
(22.5 mm = A) ❒
Rated control supply voltage
(24 V DC = 0;
110 ... 230 V AC /110 V DC = 1)
❒
Rated operating voltage
(48 ... 500 V = 4) ❒
Example 3RM 1 0 0 1 - 1 A A 0 4
*) Hybrid connection method: control circuit realized as push-in spring-loaded terminal and main circuit as screw terminal
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Description
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SIRIUS 3RM1 motor starter
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4
4.1
Rated operational current and derating
Values for rated operational current Ie
Depending on the current setting range, the following rated operational currents apply for the
3RM1 motor starters:
Motor starter version
3RM1.01-.....
3RM1.02-.....
3RM1.07-.....
Rated operational current I
eAC53a
[A] 0,5 2 7
Setting range for Ie [A] 0,1 ... 0,5 0,4 ... 2 1,6 ... 7 (10)
Minimum current per phase of the motorized
load [A]
0,05 0,14 0,6
Note
The devices with I
eAC53a
= 7 A have in addition to this setting value an I
eAC51
setting value for
10 A in the highest setting level. This setting is intended for resistive loads to 10 A and is not
suitable for operating motors. With this setting, there is no overload trip in accordance with
Class 10A. Instead, this takes place in accordance with the description in the chapter
"Overload protection/device protection characteristic (Page 125)".
As soon as the minimum current limit is violated, fault detection (phase failure) picks up.
When using the 3RM11 Failsafe and 3RM13 Failsafe motor starters, please note that no
neutral conductor may be connected in the load circuit, e.g. in the case of a 230 V brake or
resistive loads.
Page 52
Configuration
4.1 Rated operational current and derating
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Motors with a high efficiency and high motor starting currents
High starting currents may have to be taken into consideration when using 3RM1 motor
starters on motors with a high efficiency (IE3 or IE4). According to the product standard
IEC 60947-4-2, the 3RM1 motor starters are designed for motors with a maximum 8-fold
starting current.
If motors are operated that have a higher starting current, refer to the following table for the
maximum adjustable motor current:
Motor starter version
I
eAC53a
[A] at 40°C max.
motor starting current
3RM1.01-.....
3RM1.02-.....
3RM1.07-.....
<= 8-fold Ie 0,5 2 7
8.5-fold Ie 0,47 1,9 6,6
9-fold Ie 0,45 1,8 6,2
9.5-fold Ie 0,42 1,7 5,9
10-fold Ie 0,4 1,6 5,6
The device protection may respond sooner in the case of motors with a higher starting
current. You will find details in "Figure 9-2 Device protection characteristic (Page 126)".
Dependence of the rated operational current on the assembly type, the design version and the
ambient temperature
The permissible rated operational current of the 3RM1 motor starter reduces depending on
the assembly type, the design version, and the ambient temperature T
A
as follows:
Motor starter version 3RM1.01-..... to 0.5 A and 3RM1.02-..... to 2 A:
For the versions 0.5 A and 2 A, the following ambient temperature limits apply depending on
the assembly type:
Assembly type
Max. ambient temperature for 0.5 A and 2 A device for AC 53 a
Side-by-side
Individually/with 22.5 mm
clearance
Vertically on horizontal rail 50 °C 60 °C
Horizontally on vertical rail 45 °C 60 °C
Upright on horizontal
rail/mounting surface
45 °C 60 °C
Page 53
Configuration
4.1 Rated operational current and derating
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53
Motor starter version 3RM1.07-..... to 7 A:
For the 7 A version, the following derating values apply depending on the assembly type:
Assembly type
Ambient
temperature
Max. setting values for 7 A device in A
for AC 53 a
Side-by-side
Individually/with
22.5 mm clearance
Alternately with
2 A device
Vertically on
horizontal rail
40 °C 7 4,6 4
45 °C 6,1 4 3,6
50 °C 6,1 3,2 / 2,81) 3,2 / 2,41)
55 °C 5,2 0 0
60 °C 4,6 0 0
Horizontally on
vertical rail
40 °C 5,2 4 3,2
45 °C 4,6 2 2
50 °C 4 0 0
55 °C 3,2 0 0
60 °C 2,0 0 0
Upright on
horizontal
rail/mounting
surface
40 °C 6,1 4 3,6
45 °C 5,2 3,6 3,2
50 °C 5,2 0 0
55 °C 4 0 0
60 °C 3,6 0 0
1)
When using device connectors
Page 54
Configuration
4.1 Rated operational current and derating
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Design versions for 7 A devices
For the 7 A device without clearance, a distinction is made between the following design
versions:
Design version
Individually with clearance a = 22.5 mm
Can be implemented with loop-through connectors when
using device connectors.
Note:
When using the 3-phase busbar systems, the necessary
clearances can also be implemented by leaving the
connections free. Cover the free connections with cover
caps (accessories) to protect the free terminal lugs
against touch.
7 A device alternately with 2 A device or 0.5 A device (b)
without clearance
Devices with the same rated operational current without
clearance: Side-by-side
Note
Please note the assembly examples in Chapter "Typical circuits (Page 143)".
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Configuration
4.1 Rated operational current and derating
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55
Dependence of the rated operational current on the installation altitude
The permissible rated operational current of the 3RM1 motor starter is reduced as shown in
the diagram depending on the installation altitude:
Note
Maximum installation altitude of 3RM11/3RM13 Failsafe motor starters: 2000 m
Installation altitudes of more than 2000 m are not admissible for 3RM11/3RM13 Failsafe
motor starters.
From an installation altitude in excess of 2000 m, in the case of Standard 3RM10/3RM12
motor starters the maximum permissible operational voltage must be reduced due to the
limited insulation strength. You can obtain details on request from SIEMENS Technical
Assistance (http://www.siemens.com/industrial-controls/technical-assistance).
Page 56
Configuration
4.2 Ambient conditions
SIRIUS 3RM1 motor starter
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4.2
Ambient conditions
4.2.1
Application environment
The 3RM1 motor starters are designed for use in enclosed spaces in which no severe
operating conditions prevail (e.g. dust, caustic vapors, hazardous gases).
If they are to be installed in dusty or damp rooms, suitable control cabinets must be
provided.
Note
If you operate the 3RM1 motor starter in a control cabinet, ensure that the cabinet is
adequately ventilated.
4.2.2
Ambient temperature
The 3RM1 motor starter has been designed for use under ambient temperatures ranging
from -25 °C to +40 °C, singly in a vertical mounting position, and without a reduction in the
permissible rated operational current. With the deratings given in the section "Rated
operational current and derating (Page 51)", you can operate the 3RM1 motor starters at
ambient temperatures of up to 60 °C.
4.2.3
Mounting position
Installation on a vertical mounting surface is recommended for the 3RM1 motor starter.
Please observe the power reduction levels/deratings for other mounting positions given in
the section "Rated operational current and derating (Page 51)".
For information on clearances to neighboring components, please refer to the chapter
"Technical data (Page 113)".
4.2.4
Grounding measures
No grounding measures are required for the 3RM1 motor starter.
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Configuration
4.2 Ambient conditions
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57
4.2.5
Permissible operating voltage
To be able to ensure safe isolation of the circuits from each other in accordance with IEC
60947-1, the following operating voltages are permissible:
Table 4- 1 Safe isolation of the 3RM1 motor starters
... to ...
Control circuit
(A1/A2, OUT, IN1-3,
M1/M2)
Signaling contacts
(98/95/96)
Main circuit
(1L1/3L2/5L3
2T1/4T2/6T3)
Control circuit
(A1/A2, OUT, IN1-3,
M1/M2)
- 250 V 500 V
Signaling contacts
(98/95/96)
250 V - 500 V
Main circuit
(1L1/3L2/5L3
2T1/4T2/6T3)
500 V 500 V -
4.2.6
Minimum load current
The minimum load current is 20% of the set motor current, but at least the absolute minimum
current specified in the tables below.
The minimum load current differs in the case of Standard 3RM10/3RM12 and Failsafe
3RM11/3RM13 motor starters:
Table 4- 2 Minimum load current in the case of Standard 3RM10/3RM12 motor starters
Motor current
0.5 A
2 A
7 A
Motorized load 0.05 A 0.14 A 0.6 A
Resistive load 0.05 A 0.14 A 0.6 A
Table 4- 3 Minimum load current in the case of Failsafe 3RM11/3RM13 motor starters
Motor current
0.5 A
2 A
7 A
Motorized load 0.05 A 0.14 A 0.6 A
Resistive load 0.25 A 1 A 3.5 A
As soon as the minimum current limit is violated, fault detection (phase failure) picks up.
Page 58
Configuration
4.3 Load feeders - protection against short circuit
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4.3
Load feeders - protection against short circuit
4.3.1
Protection against short circuit
The short-circuit strength in combination with fuses is up to 100 kA at 400 V and with SIRIUS
3RV2 motor starter protectors up to 55 kA at 400 V. Type of coordination 1 is maintained
here.
DANGER
Hazardous Voltage at the Motor
Can Cause Death, Serious Injury, or Property Damage.
Health hazard from automatic hot restart.
The safety function must be checked after every tripping of the motor starter protector (also
in the case of overload).
After every short circuit in the case of short-circuit protection according to
type of
coordination 1
, a 3RM1 motor starter is defective.
Replace a 3RM1 motor starter including the terminals after a short circuit in the case of
short-circuit protection according to type of coordination 1.
With 3RM11/3RM13 Failsafe motor starters, you must check the safety function in addition
to replacing the unit.
With 3RM11/3RM13 Failsafe motor starters, also check the safety function after a short
circuit in the case of short-circuit protection according to
type of coordination 2
.
4.3.2
Configuration of load feeders
The 3RM1 motor starters can be combined with any short-circuit protection devices. Using
SIRIUS 3RV20 motor starter protectors offers a convenient solution for the configuration of
fuseless load feeders. However, combinations with fuses are also possible, mastering
particularly high short-circuit currents. Type of coordination 2 (see Glossary (Page 165)) can
also be achieved.
4.3.3
Configuration of a load feeder with 3RM1 motor starter in compliance with IEC
Short-circuit protection for load feeders in compliance with IEC can also be realized by motor
starter protectors or fuses. Depending on the design of the protection device, the two types
of coordination 1 or 2 can be achieved. The protection devices listed are the maximum
permissible versions and, as an alternative, protection devices of the same type with a lower
rated current can be used.
Page 59
Configuration
4.3 Load feeders - protection against short circuit
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4.3.3.1
Fuseless design
Combining 3RM1 motor starters with motor starter protectors
DANGER
Hazardous Voltage at the Motor
Can Cause Death, Serious Injury, or Property Damage.
Health hazard from automatic hot restart.
The safety function must be checked after every tripping of the motor starter protector (also
in the case of overload).
After every short circuit in the case of short-circuit protection according to
type of
coordination 1
, a 3RM1 motor starter is defective.
Replace a 3RM1 motor starter including the terminals after a short circuit in the case of
short-circuit protection according to type of coordination 1.
With 3RM11/3RM13 Failsafe motor starters, you must check the safety function in addition
to replacing the unit.
With 3RM11/3RM13 Failsafe motor starters, also check the safety function after a short
circuit in the case of short-circuit protection according to
type of coordination 2
.
The 3RM1 motor starters can be combined with the following motor starter protectors for
short circuits according to type of coordination 1:
Table 4- 4 Motor starter protectors according to type of coordination 1 for 3RM1 motor starters with
400 V
Motor starter TA = 40 °C
Short-circuit
current
Maximum permitted motor starter
protectors for 400 V + 10%
Order number
Rated current [A]
Current [kA]
Order number
Rated current [A]
3RM1... 0,5 / 2,0 / 7,0 55 3RV2011-1HA10 8
3RM1... 0,5 / 2,0 / 7,0 12,5 3RV2011-1KA10 12,5
3RM1... 0,5 / 2,0 / 7,0 10 3RV2021-4AA10 16
3RM1... 0,5 / 2,0 / 7,0 7,5 3RV2021-4BA10 20
3RM1... 0,5 / 2,0 / 7,0 5 3RV2021-4AA10 25
Table 4- 5 Motor starter protectors according to type of coordination 1 for 3RM1 motor starters with
500 V
Motor starter TA = 40 °C
Short-circuit
current
Maximum permitted motor starter
protectors for 500 V + 10%
Order number
Rated current [A]
Current [kA]
Order number
Rated current [A]
3RM1.01… 0,5 10 3RV2011-1HA10 8
3RM1.02… 2,0 10 3RV2011-1HA10 8
3RM1.07… 7,0 10 3RV2011-1HA10 8
Page 60
Configuration
4.3 Load feeders - protection against short circuit
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Combining 3RM1 motor starters with miniature circuit breakers
DANGER
Hazardous Voltage at the Motor
Can Cause Death, Serious Injury, or Property Damage.
Health hazard from automatic hot restart.
The safety function must be checked after every tripping of the motor starter protector (also
in the case of overload).
After every short circuit in the case of short-circuit protection according to
type of
coordination 1
, a 3RM1 motor starter is defective.
Replace a 3RM1 motor starter including the terminals after a short circuit in the case of
short-circuit protection according to type of coordination 1.
With 3RM11/3RM13 Failsafe motor starters, you must check the safety function in addition
to replacing the unit.
With 3RM11/3RM13 Failsafe motor starters, also check the safety function after a short
circuit in the case of short-circuit protection according to
type of coordination 2
.
The 3RM1 motor starters can be combined with the following miniature circuit breakers for
short circuits according to type of coordination 1:
Table 4- 6 Miniature circuit breakers according to type of coordination 1 for 3RM1 motor starters
with 400 V
Motor starter TA = 40 °C
Short-circuit
current
Maximum permitted miniature circuit
breakers
with 400 V + 10%
Order number
Rated current [A]
Current [kA]
Order number
Rated current [A]
3RM1.01… 0,5 6 5SY4325-6 25
3RM1.02… 2,0 6 5SY4325-6 25
3RM1.07… 7,0 6 5SY4325-6 25
Page 61
Configuration
4.3 Load feeders - protection against short circuit
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4.3.3.2
Fused design
Combining 3RM1 motor starters with fuses
DANGER
Hazardous Voltage at the Motor
Can Cause Death, Serious Injury, or Property Damage.
Health hazard from automatic hot restart.
The safety function must be checked after every tripping of the motor starter protector (also
in the case of overload).
After every short circuit in the case of short-circuit protection according to
type of
coordination 1
, a 3RM1 motor starter is defective.
Replace a 3RM1 motor starter including the terminals after a short circuit in the case of
short-circuit protection according to type of coordination 1.
With 3RM11/3RM13 Failsafe motor starters, you must check the safety function in addition
to replacing the unit.
With 3RM11/3RM13 Failsafe motor starters, also check the safety function after a short
circuit in the case of short-circuit protection according to
type of coordination 2
.
The 3RM1 motor starters can be combined with the following fuses for short circuits of 55 kA
according to type of coordination 1:
Table 4- 7 Fuses according to type of coordination 1 for 3RM1 motor starters
Motor starter TA = 40 °C
Maximum permitted fuse links for
500 V + 10%
DIAZED operating class gG
Rated current [A]
Order number
Rated current [A]
3RM1.01… 0,5 5SB281 25
3RM1.02… 2,0 5SB281 25
3RM1.07… 7,0 5SB281 25
Page 62
Configuration
4.3 Load feeders - protection against short circuit
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4.3.4
Configuration of a load feeder with 3RM1 motor starter in compliance with UL
4.3.4.1
Function according to UL 508
The 3RM1 motor starters can be combined individually with a circuit breaker (motor starter
protector) or fuses. A group installation is also possible according to UL.
Configuration of individual load feeders
A circuit breaker or appropriate fuses is/are assigned to each motor starter.
Configuring a group of load feeders (group installation)
A "group installation" is a combination of several 3RM1 motor starters with one common
short-circuit protection device (branch circuit protection device). This common branch circuit
protection device can be a circuit breaker according to UL489, e.g. a 3RV27 or fuses
according to UL248.
The 3RM19 infeed system is suitable for a group installation according to UL because it may
be loaded up to a summation current of 16 A. As an alternative, distribution of the main
circuit can be realized with individual cables that have an AWG 12 cross-section.
4.3.4.2
SCCR short circuit current ratings
SCCR short circuit current ratings
The SCCR (short circuit current rating) indicates the maximum permissible short-circuit
current for a switching device. A higher value can only be achieved in combination with
protection devices such as fuses or circuit breakers.
This rating is required for mounting accessories in control cabinets (control panels)
conforming to UL 508a. The switching device or switchgear assembly with the lowest value
specifies the value for the entire control panel.
A low value makes engineering the supply voltage for the control panel difficult.
According to UL 508a, the 3RM1 motor starters have a standard short circuit current rating of
1 kA for the versions up to 2 A rated current and 5 kA for the version with 7 A.
Tests were also carried out with a short circuit rating of 100 kA (high capacity short circuit
current ratings). The UL reports
(http://support.automation.siemens.com/WW/view/en/66427510) include details of possible
combinations with Class J fuses, as well as with a number of circuit breakers.
Page 63
Configuration
4.3 Load feeders - protection against short circuit
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63
4.3.4.3
Fuses and circuit breakers
Fuse data for motor starters
DANGER
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Health hazard from automatic hot restart.
The 3RM1 motor starter and the safety function must be checked after every tripping of the
motor starter protector (also in the case of overload).
Replace a defective 3RM1 motor starter after a short circuit and check the safety function of
3RM11/3RM13 Failsafe motor starters.
Standard short circuit according to UL 508 for 460 V + 5 %
Table 4- 8 Fuses for protecting against short-circuit currents
Motor starter TA = 50 ℃
Short-circuit
current
Fuse
Order number
Rated current [A]
[kA]
Type
Max. size [A]
3RM1.01… 0,5 1 RK 5 8
3RM1.02… 2,0 1 RK 5 8
3RM1.07… 6,1 5 RK 5 30
High fault according to UL 508 for 460 V + 5 %
Table 4- 9 Fuses for protecting against high short-circuit currents
Motor starter TA = 50 ℃
Short-circuit
current
Fuse
Order number
Rated current [A]
[kA]
Type
Max. size [A]
3RM1.01… 0,5 100 CLASS J 50
3RM1.02… 2,0 100 CLASS J 50
3RM1.07… 6,1 100 CLASS J 50
Page 64
Configuration
4.4 Infeed for the main circuit
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Circuit breakers for protecting against short-circuit currents
DANGER
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Health hazard from automatic hot restart.
The 3RM1 motor starter and the safety function must be checked after every tripping of the
motor starter protector (also in the case of overload).
Replace a defective 3RM1 motor starter after a short circuit and check the safety function of
3RM11/3RM13 Failsafe motor starters.
Table 4- 10 Circuit breakers for protecting against standard and high short-circuit currents
Motor starter TA = 50 ℃
Short-circuit
current
Fuse
Order number
Rated current [A]
[kA]
Type
Max. size [A]
3RM1.01… 0,5 66 3RV2711-1CD10 2,5
3RM1.01… 0,5 1 3RV2711-1GD10 6,3
3RM1.02… 2,0 66 3RV2711-1CD10 2,5
3RM1.02… 2,0 1 3RV2711-1GD10 6,3
3RM1.07… 6,1 18 3RV2711-1JD10 10
3RM1.07… 6,1 5 3RV2711-4DC10 22
4.4
Infeed for the main circuit
4.4.1
Infeed options
You have the following options for implementing the infeed for the main circuit of the 3RM1
motor starter:
● Infeed via parallel wiring of individual 3RM1 motor starters
● Infeed via the 3RM19 infeed system (for 3RM1...-1AA.4 motor starters with screw
connections and 3RM1...-3AA.4 motor starters with hybrid connections)
Page 65
Configuration
4.4 Infeed for the main circuit
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4.4.2
3RM19 3-phase infeed system
The 3RM19 3-phase infeed system is designed for 3RM1...-1AA.4 motor starters with screw
connections and 3RM1...-3AA.4 motor starters with hybrid connections. Push-in terminals
can therefore not be connected with this infeed system.
Note
Use of several busbars
More than five devices can be connected by clamping the terminal lugs of a second busbar
rotated by 180°.
A motor starter must be plugged into the connection points of the busbars. Observe this in
the case of gaps stipulated for derating purposes, and select appropriate busbars.
The special 3-phase busbar enables fault-free and fast main circuit wiring when using
several 3RM1 motor starters arranged side-by-side. The energy is routed from an upstream
short-circuit protection device to the system via an infeed terminal. The 3-phase busbar is
designed in such a way that the maximum number of 3RM1 motor starters is only limited by
the rated operational current of the infeed system.
Rated operational current
For the components of the 3RM19 infeed system, the maximum permissible rated
operational current is 25 A (UL: 16 A).
If you use several 3RM1 motor starters that together require more than 25 A, form groups
that each have a maximum requirement of 25 A (UL: 16 A).
Note
Multiple infeed
If you plan multiple infeed in the case of a respective requirement of more than 25 A, you
must observe a potential current asymmetry in the infeeds.
Page 66
Configuration
4.4 Infeed for the main circuit
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Mounting
Attach the busbar from below to the rear terminals L1, L2 and L3 of the 3RM1 motor starter.
The outgoing feeders to the motors thus remain accessible.
Figure 4-1 Attaching the 3RM19 infeed system to the 3RM1 motor starters
DANGER
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
If free and uncovered terminal lugs are touched when the load voltage is switched on,
death or serious injury can result.
For this reason, always cover the free terminal lugs (= free slots that are unassigned for
thermal reasons, for example) with a cover cap. The cover caps are available as
accessories.
Energy is supplied via the infeed terminal 3RM1920-1AA. This means you can connect
conductors with a cross-section of 1.5 mm² to 4 mm².
Page 67
Configuration
4.5 Configuration with device connectors
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4.5
Configuration with device connectors
4.5.1
Configuration with device connectors
The device connector may be used only with the 24 V DC version of the motor starter. There
must be no mixing of the Standard and Failsafe variants of the 3RM1 motor starter via the
device connector. If both variants are used, these must be fitted on separate device
connector systems. This has no influence on the infeed system for the 3RM19 main circuit,
which can still be used without restriction for a combination of the variants.
For additional information on using device connectors, refer to "FAQs on the 3RM1 motor
starter (http://support.automation.siemens.com/WW/view/de/81525494)".
4.6
Examples/applications
4.6.1
Operation with the EMERGENCY-STOP function
The 3RM11 Failsafe and 3RM13 Failsafe safety-related motor starters can be used with any
safety relays and safety-related controllers in safety-related applications up to SILCL 3 in
accordance with IEC 62061, PL e/Cat. 4 in accordance with EN ISO 13849-1.
Page 68
Configuration
4.6 Examples/applications
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Basic configuration
①
... ④ Instead of the black box, one of the modules ① ... ④ can be used
①
SIRIUS 3TK28 safety relay
②
SIRIUS 3SK1 safety relay
③
SIMATIC S7 fail-safe modules
④
SIRIUS 3RK3 modular safety system
⑤
SIRIUS 3RM11 Failsafe or SIRIUS 3RM13 Failsafe safety-related motor starter
⑥
SIRIUS 3RV2 motor starter protector
⑦
EMERGENCY-STOP button
⑧
Motor
Figure 4-2 Basic configuration with safety relay or safety-related controller
Configuration with 3SK1 safety relay and device connectors
If you use safety-related motor starters (3RM11..-.AA04 / 3RM13..-.AA04) with a control
supply voltage of 24 V DC with the 3SK1 safety relay, you can establish safe connection of
the safety-related wiring using the device connectors. Use of device connectors avoids
errors when setting up the control circuit wiring and offers savings in cable laying. In addition,
the test overhead following completion of the control cabinets is reduced. The
3RM11/3RM13 safety-related motor starters can be used optimally as output expansions in
the 3SK1 system.
Page 69
Configuration
4.6 Examples/applications
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When the EMERGENCY-STOP is actuated, the motor starters' control supply voltage is shut
down and the motor is isolated from the power supply. Due to the internal self-monitoring of
the 3RM11/13 Failsafe motor starters in compliance with SILCL 3/PL e, there is no need for
a feedback signal to the 3SK1 safety relay.
DANGER
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Possible failure of the safety function
When operating with the 3SK1 safety relay and a device connector, the supply voltage for
3RM11/3RM13 Failsafe motor starters is established via the device connectors.
In this case, do not connect anything to terminals A1 and A2 of the 3RM11/3RM13 Failsafe
motor starters, in order to prevent bypassing of the safety function.
WARNING
Failure of the safety function
Hybrid operation of 3RM10/3RM12 Standard motor starters with 3RM11/3RM13 Failsafe
motor starters in safety-related applications is not admissible.
Only ever use safety-related motor starters (3RM11 Failsafe and 3RM13 Failsafe) in safetyrelated applications.
Note
Please observe the information about the control supply voltage and the control inputs in the
Chapters "Device versions (Page 24)" and "Control circuit (Page 117)".
Page 70
Configuration
4.6 Examples/applications
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①
SIRIUS 3SK1 Advanced basic unit
②
SIRIUS 3RM1 Failsafe (3RM11 Failsafe or 3RM13 Failsafe) safety-related motor starters
③
SIRIUS 3RV2 motor starter protector
④
EMERGENCY-STOP button
⑤
Motor
Figure 4-3 Configuration with 3SK1 safety relay and device connectors
Note
No hybrid operation of Failsafe and Standard 3RM1 motor starters
Hybrid operation of 3RM11/3RM13 Failsafe motor starters with 3RM10/3RM12 Standard
motor starters is not admissible.
You will find further information in the manual for the 3SK1 safety relay on the Internet with
regard to operation in safety-related applications; see Chapter "Further documentation
(Page 11)". Follow the safety instructions and information contained there.
Reference
For more typcial circuits, please refer to the "Typical circuits (Page 143)" appendix.
Page 71
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5
5.1
Warning notices
Warning notices before installation, wiring, and commissioning
DANGER
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Hazardous electrical voltage can cause electric shock, burns and damage.
Turn off and lock out all power supplying this device before working on the device.
Page 72
Mounting
5.2 Mounting the devices on a level surface
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5.2
Mounting the devices on a level surface
Requirements
Please note the following requirements for mounting on a level surface:
● Please observe the information about the mounting position in the chapter "Mounting
position (Page 56)".
● Two properly executed drill holes with thread or plug on the level surface
For details of the distances between the drilled holes, please refer to the relevant
dimension drawings in the chapter "Dimension drawings (Page 129)".
● Two screws to fit the holes M4 x 12 in accordance with DIN 784
● Two plastic securing brackets
Please refer to the accessories list for the relevant order number in the chapter
"Accessories and order number scheme (Page 41)".
Procedure
Step
Operating instruction
Figure
1 Insert the securing brackets into the openings
provided on the device until they engage.
2 Hold the device up to the level surface prepared for
screw fastening.
3 Insert the screws through the oblong holes in the
securing brackets.
4 Screw the device onto the level surface so that it is
secure.
Tightening torque: 1 Nm
Page 73
Mounting
5.3 Disassembling the devices from a level surface
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5.3
Disassembling the devices from a level surface
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Turn off and lock out all power supplying this device before working on this device.
Requirements
● The terminals have been removed or disconnected.
Procedure
Step
Operating instruction
Figure
1 Hold the device firmly.
2 Unscrew the cap screws.
3 Lift the device from the level surface.
4 Remove the securing brackets from the
device.
Page 74
Mounting
5.4 Mounting the devices on a standard mounting rail
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5.4
Mounting the devices on a standard mounting rail
Requirements
● At the installation location, a horizontal 35 mm mounting rail in accordance with
DIN EN 60715 is properly secured
● Please observe the information about the mounting position in chapter "Mounting position
(Page 56)"
Procedure
Step
Operating instruction
Figure
1 Hang the back of the device onto the upper
edge of the standard mounting rail
2 Press the lower half of the device against the
rail until the device engages
Page 75
Mounting
5.5 Disassembling devices from a standard mounting rail
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5.5
Disassembling devices from a standard mounting rail
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Turn off and lock out all power supplying this device before working on this device.
Requirements
● The terminals have been removed or disconnected.
Procedure
Step
Operating instruction
Figure
1 Press the device downwards.
2
Pull the lower half of the device away from
the standard mounting rail.
3 Lift the device from the upper edge of the
standard mounting rail.
Page 76
Mounting
5.6 Mounting the devices with device connectors on a standard mounting rail
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5.6
Mounting the devices with device connectors on a standard
mounting rail
Requirements
● At the installation location, a horizontal 35 mm mounting rail in accordance with
DIN EN 60715 is properly secured
● Please observe the information about the mounting position in chapter "Mounting position
(Page 56)"
Procedure
Step
Operating instruction
Figure
1 Place the back of the device connector on the
upper edge of the standard mounting rail.
2 Press the lower half of the device connector
against the standard mounting rail until it
engages.
3 Repeat the procedure with all the required
device connectors.
4 Push the device connectors together until they
engage.
5 Mount the cover on the left on the first device
connector in the system configuration.
The cover is included in the scope of supply of
the device terminator.
Page 77
Mounting
5.6 Mounting the devices with device connectors on a standard mounting rail
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77
Step
Operating instruction
Figure
6 Mount the device on the device connector.
7 Mount all the devices required for the system
configuration in accordance with the respective
installation guidelines on the device
connectors.
Page 78
Mounting
5.7 Disassembling the devices with device connectors from a standard mounting rail
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5.7
Disassembling the devices with device connectors from a standard
mounting rail
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Turn off and lock out all power supplying this device before working on this device.
Requirements
● The terminals have been removed or disconnected.
Procedure
Step
Operating instruction
Figure
1 Unlock the device using a screwdriver.
2
Pull the lower half of the device away from
the device connector.
3 Unlock the device using a screwdriver.
Page 79
Mounting
5.7 Disassembling the devices with device connectors from a standard mounting rail
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79
Step
Operating instruction
Figure
4 Pull the device away from the device
connector.
5 Separate the device connectors using a
screwdriver.
6 Remove the cover to the left of the first
device connector.
Page 80
Mounting
5.7 Disassembling the devices with device connectors from a standard mounting rail
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Step
Operating instruction
Figure
7 Press the device connector down.
8 Pull the lower half of the device connector
away from the standard mounting rail.
9 Lift the device connector from the upper
edge of the standard mounting rail.
Page 81
Mounting
5.8 Mounting the devices with device connectors on a wall
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5.8
Mounting the devices with device connectors on a wall
Requirements
Please note the following requirements for mounting on a level surface:
● Please observe the information about the mounting position in the chapter "Mounting
position (Page 56)".
● Two properly executed drill holes with thread or plug on the level surface
For details of the distances between the drilled holes, please refer to the relevant
dimension drawings in the chapter "Dimension drawings (Page 129)".
● Two screws to fit the M4 x 12 holes in accordance with DIN 784.
● Device connector
Please refer to the accessories list for the relevant order number in the chapter
"Accessories and order number scheme (Page 41)".
Procedure
Step
Operating instruction
Figure
1 Push the device connectors together until they
engage.
2 Mount the cover on the left on the first device
connector in the system configuration.
The cover is included in the scope of supply of
the device terminator.
Page 82
Mounting
5.8 Mounting the devices with device connectors on a wall
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Step
Operating instruction
Figure
3 Hold the device connector against the level
surface prepared for screw fastening.
4 Insert the screws through the holes in the
device connectors.
5 Screw the device connector securely onto the
level surface.
Tightening torques:
• Top: < 0.1 Nm
• Bottom: 1 Nm
6 Mount the device on the device connector.
7 Mount all the devices required for the system
configuration in accordance with the respective
installation guidelines on the device
connectors.
Page 83
Mounting
5.9 Disassembling the devices with device connectors from a wall
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5.9
Disassembling the devices with device connectors from a wall
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Turn off and lock out all power supplying this device before working on this device.
Requirements
● The terminals have been removed or disconnected.
Procedure
Step
Operating instruction
Figure
1 Unlock the device on the underside using
a screwdriver.
2
Pull the lower half of the device away from
the device connector.
3 Unlock the device on the top using a
screwdriver.
Page 84
Mounting
5.9 Disassembling the devices with device connectors from a wall
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Step
Operating instruction
Figure
4 Pull the device away from the device
connector.
5 Release the screws.
6 Separate the device connectors using a
screwdriver.
7 Remove the cover to the left of the first
device connector.
Page 85
Mounting
5.10 Mounting the sealable cover
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5.10
Mounting the sealable cover
The sealable cover is used to protect the set rated operational current of the load
(current setting I
e
) against unauthorized or unintentional manipulation.
Procedure
Step
Operating instruction
Figure
1 Attach the two bottom hooks on the cover
to the openings on the device and fold the
cover up
2 Seal the cover to secure it against
unauthorized removal.
Page 86
Mounting
5.10 Mounting the sealable cover
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6
6.1
Connecting the screw-type terminals
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Turn off and lock out all power supplying this device before working on this device.
NOTICE
Absence of overvoltage protection if wiring is wrong
Observe the wiring's terminal assignments:
For optimum response in the event of short circuits and for protection against overvoltages,
the main circuit's infeed must be at terminals 1/L1 to 5/L3.
Requirements
● Cross-tip screwdriver size PZ 1 x 80
● For suitable connection cross-sections of the cables, see chapter Connection cross
sections (Page 123).
Procedure
DANGER
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Hazardous electrical voltage can cause electric shock, burns and damage.
To ensure protection against an electric shock hazard with the hinged cover open at the
signaling contacts 95, 96, 98 at a voltage of ≥ 50 V, screw in all terminal screws that are not
needed to clamp conductors.
Page 88
Connection
6.1 Connecting the screw-type terminals
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Step
Operating instruction
Figure
1 Insert the relevant cable into square on the screw
terminal until it engages.
2 Hold the cable in the screw terminal.
3 Tighten the screw with a torque of 0.6 to 0.8 Nm.
4 Pull on the cable to ensure it is screwed tight.
Page 89
Connection
6.2 Disconnecting the screw-type terminals
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6.2
Disconnecting the screw-type terminals
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Turn off and lock out all power supplying this device before working on this device.
Requirements
● Cross-tip screwdriver size PZ 1 x 80
Procedure
Step
Operating instruction
Figure
1 Unscrew the screw of the screw-type terminal.
2 Remove the cable from the unscrewed screw-
type terminal.
Page 90
Connection
6.3 Connecting the push-in terminals
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6.3
Connecting the push-in terminals
6.3.1
Wiring rules for spring-loaded terminals (with push-in technology)
Wiring rules for ... Control current terminals (top of
enclosure):
Main current terminals
(bottom of enclosure)
Connectable cross-sections for solid cables 2 x 0.5 ... 2 x 1.5 mm² 0.5 ... 4 mm²
(AWG1): 20 ... 16) AWG1): 20 ... 12
Connectable cross-sections for
flexible cables
Without end sleeve 2 x 0.5 ... 2 x 1.5 mm² 0.5 ... 4 mm²
(AWG1): 20 ... 16) AWG1): 20 ... 12
With end sleeve (with and
without plastic sleeve)
2 x 0.5 ... 2 x 1.0 mm² 2) 0.5 ... 2.5 mm²
(AWG1): 20 ... 18) (AWG1): 20 ... 14)
With TWIN end sleeve --- 2 x 0.5 ... 2x1.5 mm²
--- (AWG1): 20 ... 16)
Cable stripping length 10 ... 11 mm
End sleeves according to DIN 46228-4 with plastic sleeve 10 mm
1)
AWG: American Wire Gauge (AWG does not define use of end sleeves)
2)
When 2 x 1.0 mm² end sleeves with a plastic sleeve are used, space problems may arise with the sleeves; as an
alternative, you are advised to use end sleeves without plastic sleeves
Notes on handling spring-loaded terminals with push-in technology
The terminal area of the spring-loaded terminals is rectangular, and the maximum overall
dimensions of a conductor to be wired must not exceed 1.5 x 2.4 mm (control current
terminals) or 2.4 x 2.8 mm (main current terminals).
Attention must be paid to the orientation of the terminal area, which may call for vertical
fitting of rectangularly crimped cables.
To make optimum use of available terminal area, you are advised to choose a form of
crimping that creates a corresponding rectangular contour. Trapezoidal crimping is generally
very highly suitable in this case.
When use is made of a cable that utilizes the full overall height, the terminal's spring is
deflected to the maximum. Therefore, removal of this cable may become a problem because
it requires further deflection of the spring.
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Control current terminals Main current terminals
Terminal area of control current terminals
Terminal area of main current terminals
6.3.2
Connecting the push-in terminals
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Turn off and lock out all power supplying this device before working on this device.
NOTICE
Absence of overvoltage protection if wiring is wrong
Observe the wiring's terminal assignments:
For optimum response in the event of short circuits and for protection against overvoltages,
the main circuit's infeed must be at terminals 1/L1 to 5/L3.
Push-in connections are a form of spring-loaded terminals allowing wiring without tools for
rigid conductors or conductors equipped with end sleeves.
For wiring finely-stranded or stranded conductors without end sleeves on push-in
connections, a screwdriver is required.
Requirements
● Screwdriver DIN 5264 of the size 0.5 x 3 mm (for finely-stranded conductors only)
● For suitable connection cross-sections of the cables and notes on end sleeve finishing,
see Chapter Connection cross sections (Page 123).
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6.3 Connecting the push-in terminals
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Procedure
Table 6- 1 Rigid conductors or conductors equipped with end sleeves
Step
Operating instruction
Figure
1 Insert the cable into the oval opening as far as
it will go.
2 Pull on the cable to ensure it is tight.
Table 6- 2 Finely-stranded conductors
Step
Operating instruction
Figure
1 Insert the screwdriver in the rectangular
opening to open the terminal (oval opening).
2 Insert the cable as far as it will go into the oval
opening and remove the screwdriver.
3 Pull on the cable to ensure it is tight.
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6.4 Disconnecting the push-in terminals
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6.4
Disconnecting the push-in terminals
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Turn off and lock out all power supplying this device before working on this device.
Requirements
● Screwdriver DIN 5264 of the size 0.5 x 3 mm
Procedure
Step
Operating instruction
Figure
1 Insert the flat-head screwdriver into the
rectangular opening of the spring-loaded
terminal until it engages.
2 Remove the cable from the oval opening.
3 Remove the screwdriver.
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Connection
6.5 Attaching the terminals
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6.5
Attaching the terminals
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Turn off and lock out all power supplying this device before working on this device.
Requirements
● You must have removed the terminals, for the purpose of replacing a device, for example.
Procedure
Step
Operating instruction
Figure
1 Insert the terminal into the guide rail of the
device.
2 Slide the terminal back until it audibly
engages.
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6.6 Removing the terminals
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6.6
Removing the terminals
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Turn off and lock out all power supplying this device before working on this device.
Procedure
Step
Operating instruction
Figure
1 Press the clip of the terminal block upwards.
2 Pull the terminal out to the front.
3 Lift the terminal out of the guide rail of the
device.
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6.7 Connecting the infeed system (option)
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6.7
Connecting the infeed system (option)
WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
Turn off and lock out all power supplying this device before working on this device.
Requirements
Please note the following requirements for mounting the 3RM19 infeed system:
● Make sure the rated operational current of the infeed system (IEC: 25 A; UL: 16 A) is not
exceeded.
● The 3RM1 motor starters are mounted next to each other on a mounting rail or a level
mounting surface.
● The mounting system is only suitable for main current terminals with screw connections.
● Cross-tip screwdriver size PZ 1 x 80
● For suitable connection cross-sections of the cables for the infeed terminal, see the
Chapter "General technical data (Page 128)".
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6.7 Connecting the infeed system (option)
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Procedure
Figure 6-1 Mount the 3RM19 infeed system
DANGER
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
If free and uncovered terminal lugs are touched when the load voltage is switched on,
death or serious injury can result.
For this reason, always cover the free terminal lugs (= free slots that are unassigned for
thermal reasons, for example) with a cover cap. The cover caps are available as
accessories.
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6.7 Connecting the infeed system (option)
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Step
Operating instruction
1 Connect the main circuit L1, L2 and L3 to the infeed terminal. Tighten the screw
terminals with 0.6 to 0.8 Nm. Pull on the cables to ensure they are screwed tight.
2 Plug the first busbar into the rear screw terminals on the underside of the device.
The first three terminal lugs must be assigned here to the first device on the
extreme left.
3 Plug the infeed terminal into the screw terminals of the first device together with the
busbar from Step 1.
5 Mount the second busbar rotated through 180°.
The first three terminal lugs overlap here with the last three terminal lugs of the first
busbar, and are mounted in the same device.
4 Tighten the screw terminals with 0.6 to 0.8 Nm. Pull on the busbars to ensure they
are screwed tight.
Note
Third busbar
If you use a third busbar, you must rotate it in the same way as the first busbar, and mount it
so that it overlaps the second busbar.
Note
Free slots due to derating
If a clearance is left between the devices for thermal reasons, three terminal lugs (= one slot)
must always remain free.
Note
Busbar connection points
A motor starter must be plugged into the connection points of the busbars. Observe this in
the case of gaps stipulated for derating purposes, and select appropriate busbars.
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7
7.1
Operator controls
The following operator controls are available on the 3RM1 motor starter for parameter
assignment and operation:
● Rotary coding switch with adjusting scale for current setting "I
e
":
You set the rated operational current of the load "I
e
" with the rotary coding switch.
● "TEST/RESET/RESET MODE" button:
You can start different function tests with the "TEST/RESET/RESET MODE" button. You
can find details about this in the section "Carrying out the function test (Page 39)".
Following an overload trip, the 3RM1 motor starter can be reset using the button after
three minutes have elapsed. You can find details about this in the section "Setting the
RESET method (Page 100)".
Page 100
Operator control and monitoring
7.1 Operator controls
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7.1.1
Parameterizing the 3RM1 motor starter
All the settings are made directly at the 3RM1 motor starter:
①
Rotary coding switch for rated operational current of the load
②
TEST/RESET/RESET MODE button
Figure 7-1 Front view of the 3RM1 motor starter
7.1.2
Setting the rated operational current
Use a screwdriver to set the load's rated operational current (current setting Ie) on the rotary
coding switch.
A change takes effect immediately. The sealable cover (accessory) prevents unauthorized
access to the rotary coding switch.
7.1.3
Setting the RESET method
On the 3RM1 motor starter, you can select either manual RESET or auto RESET for
resetting following an overload trip.
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