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Manual

Industrial Controls

Load Feeders and Motor Starters

SIRIUS 3RM1 Motor Starter

11/2013Edition

Answers for industry.

SIRIUS 3RM1 motor starter

___________________

Industrial Controls

Load feeders and motor starters SIRIUS 3RM1 motor starter

Manual

11/2013

A5E0345285095020A/RS-AB/002

Introduction

Product-specific safety information

Description

Configuration

Mounting

Connection

Operator control and monitoring

Service and maintenance

Technical data

Dimension drawings

Circuit diagrams

Typical circuits

Directives

Correction sheet

Siemens AG

Industry Sector Postfach 48 48 90026 NÜRNBERG GERMANY

3ZX1012-0RM10-2AC1 Ⓟ 11/2013 Technical data subject to change

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.

SIRIUS 3RM1 motor starter

Manual, 11/2013, A5E0345285095020A/RS-AB/002

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

Table of contents

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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

Table of contents

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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

Table of contents

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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

SIRIUS 3RM1 motor starter

Manual, 11/2013, A5E0345285095020A/RS-AB/002

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

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).

Introduction

1.6 Further documentation

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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

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)

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)

Introduction

1.7 Service&Support

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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)

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.

Introduction

1.9 Correction sheet

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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.

Introduction

1.9 Correction sheet

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SIRIUS 3RM1 motor starter

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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.

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)."

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.

Product-specific safety information

2.4 Intended use

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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.

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.

SIRIUS 3RM1 motor starter

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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.

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

Description

3.3 Hybrid technology

SIRIUS 3RM1 motor starter

Manual, 11/2013, A5E0345285095020A/RS-AB/002

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.

Description

3.4 Device versions

SIRIUS 3RM1 motor starter

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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.

Description

3.4 Device versions

SIRIUS 3RM1 motor starter

Manual, 11/2013, A5E0345285095020A/RS-AB/002

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.

Description

3.4 Device versions

SIRIUS 3RM1 motor starter

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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.

Description

3.5 Functions

SIRIUS 3RM1 motor starter

Manual, 11/2013, A5E0345285095020A/RS-AB/002

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.

Description

3.5 Functions

SIRIUS 3RM1 motor starter

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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)".

Description

3.5 Functions

SIRIUS 3RM1 motor starter

Manual, 11/2013, A5E0345285095020A/RS-AB/002

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.

Description

3.5 Functions

SIRIUS 3RM1 motor starter

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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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