Page 1 Introduction Safety instructions Description Industrial Controls Safety systems - General information Safety engineering SIRIUS 3SK1 Safety Relays and 3SK1 / 3RQ1 devices 3RQ1 Positively-Driven Coupling Relays System configuration Equipment Manual Mounting Connection Configuration / operation Commissioning Display and diagnostics Technical data...
Page 2 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.
Page 3: Table Of Contents
3.5.2 3SK1 Advanced system configuration ................. 37 Safety systems - General information ....................41 What is safety? ........................41 Safety function ........................42 Basic terminology ......................43 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 4 5.2.6.3 Design ..........................71 5.2.6.4 Terminal assignment......................71 5.2.7 3SK1121 Advanced basic unit time-delayed (with relay outputs)......... 73 5.2.7.1 Device features ........................73 5.2.7.2 Design ..........................74 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 5 Display of the operating state................... 106 5.5.1.6 Function setting....................... 106 5.5.2 Power supply 3SK1230 ....................107 5.5.2.1 Device features ........................ 107 5.5.2.2 Applications........................108 5.5.2.3 Design ..........................109 5.5.2.4 Terminal assignment......................109 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 6 Connection data for 3SK1 spring-loaded terminal (push-in system)........160 8.2.8 Connection data for 3RQ1 spring-loaded terminal (push-in system) ........161 8.2.9 Connecting spring-loaded (push-in) terminals ..............161 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 7 3SK1 safety relay with 3RM1 Failsafe motor starter via device connector ......222 14.4.2 3SK1 safety relay wired with 3RM1 Failsafe motor starter..........224 14.5 Additional applications..................... 226 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 8 Table of contents Accessories ............................227 Index ..............................229 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 9: Introduction
Introduction Purpose of this manual This manual contains a detailed description of SIRIUS 3SK1 safety relays and components that can be used with them as well as of 3RQ1 coupling relays. This manual provides you with the information you require to configure, install, connect and diagnose 3SK1 safety relays.
Page 10: Target Group
1.2 Target group Target group The manual is intended for everyone involved in the following tasks: • Planning and configuring systems • Installation • Commissioning • Service and maintenance SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 11: Required Basic Knowledge
A general knowledge of the following areas is needed in order to understand this manual: • Low-voltage switchgear • Digital circuit logic • Automation systems • Safety systems SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 12: Validity Range
1.4 Validity range Validity range The manual is valid for SIRIUS 3SK1 safety relays and 3RQ1 positively-driven coupling relays. It describes the components that are valid at the time of publication. SIEMENS reserves the right of including a Product Information for each new component, and for each component of a later version.
Page 13: Siemens Industry Online Support
Introduction 1.5 Siemens Industry Online Support Siemens Industry Online Support Information and service At Siemens Industry Online Support you can obtain up-to-date information from our global support database: • Product support • Application examples • Forum • mySupport Link: Siemens Industry Online Support...
Page 14 Easy access to CAx data, e.g. 3D models, 2D dimension drawings, EPLAN macros, device circuit diagrams • My IBase registrations Register your Siemens products, systems and software. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 15: Siemens Industry Online Support App
Siemens Industry Online Support app Siemens Industry Online Support app The Siemens Industry Online Support app provides you access to all the device-specific information available on the Siemens Industry Online Support portal for a particular article number, such as operating instructions, manuals, data sheets, FAQs etc.
Page 16: Datamatrix Code
DataMatrix code A DataMatrix code is lasered onto the lower terminal cover of all 3SK1-series safety relays. 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: •...
Page 17: Configurator For 3Sk1 Safety Relays
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 (https://mall.industry.siemens.com/mall/en/de/Catalog/Products/10027588? tree=CatalogTree&activetab=configurator) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 18: User Responsibility For System Design And Function
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. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays...
Page 19: Additional Documentation
You will find further manuals in the table that may be of interest for your project planning. They are available to download from the Internet free of charge. You can create your own individual system documentation in the Siemens Industry Online Support under "mySupport". Title of the manual...
Page 20: History
02/2013 Initial release 02/2014 Integration of 3RM1 Failsafe motor starters 09/2015 Revision of the manual 04/2021 Revision of the manual and incorporation of the 3RQ1 coupling relay SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 21: Support Request
1.12 Support Request 1.12 Support Request Use the Support Request online form to send your question directly to Technical Support: Support Request: Internet See also Support request (https://support.industry.siemens.com/My/ww/en/requests) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 22 Introduction 1.12 Support Request SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 23: Safety Instructions
You can achieve this by installing the devices in a control cabinet with the appropriate degree of protection. You will find more detailed information in IEC 60529, for example. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 24 The following must be grounded in accordance with the regulations to ensure noise immunity of the 3SK1 safety relays: • PELV / SELV power supply units (please also note the documentation for the respective power supply unit in this regard). SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 25 Only safety relays with a supply voltage of 24 V DC may be used on the 3ZY12 device connector. Note Cover the 3ZY12 device connector on the left-hand side using the cover supplied with the device termination connector. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 26: Recycling And Disposal
For environmentally friendly recycling and disposal of your old device, please contact a company certified for the disposal of old electrical and/or electronic devices and dispose of the device in accordance with the regulations in your country. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 27: Intended Use
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.
Page 28: Current Information About Operational Safety
SIEMENS newsletter (https://www.siemens.com/safety-integrated) Register under "Products and Solutions" for the following newsletter: • Industrial Controls - SIRIUS News (en) • Safety Integrated Newsletter SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 29: Security Information
In order to protect plants, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial security concept. Products and solutions from Siemens constitute one element of such a concept. Customers are responsible for preventing unauthorized access to their plants, systems, machines and networks.
Page 30: Electromagnetic Compatibility (Emc) According To Iec 60947-5-1
This product is designed for Environment A. It may produce radio interference in domestic environments, in which case the user may be required to take adequate mitigation measures. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 31: Description
Description SIRIUS 3SK1 safety relays are used mainly in autonomous safety applications that are not connected to a safety-related bus system. Here they are used to evaluate sensors and ensure safety-related shutdown when required. They also check and monitor the sensors, actuators and safety-oriented functions of the safety relay.
Page 32: Product Overview
3RQ1 output expansion 24 V DC 3RQ1y00-xzB00 24 ... 240 V AC/DC 3RQ1y00-xzW00 3SK1220 input expansion 24 V DC 3SK1220-xAB40 3SK1230 power supply 110 ... 240 V AC/DC 3SK1230-xAW20 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 33 (SIL 3 / PL e) 3RQ1000-.G 2NO 1NC ✓ (for 24 V DC) 3RQ1000-.H 2NO 2NC ✓ (for 24 V DC) 3RQ1000-.L 4NO 1NC ✓ (for 24 V DC) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 34: Components And Accessories
Device connector for 3SK1 safety relay, 17.5 mm wide ⑫ Device connector for 3SK1 safety relay, 22.5 mm wide ⑬ Device termination connector for 3SK1 safety relay, 17.5 / 22.5 mm wide ⑭ Sealable cover SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 35: Functional Scope Of The 3Sk1 Basic Units
Rated control supply voltage 24 V DC ✓ ✓ ✓ ✓ 110 ... 240 V AC/DC ✓ Not possible ✓ ✓ Possible using 3SK1230 power supply and device connector SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 36: 3Sk1 System
– 3RQ1 output expansion Connect the devices by wiring them. Typical 3SK1 Standard system configuration ① 3SK1 Standard basic unit ② 3SK1211 output expansion ③ 3SK1213 output expansion SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 37: 3Sk1 Advanced System Configuration
In this case, all necessary signals are exchanged via the device connector. You will find the rules for configurations with device connectors in the section "System configuration rules (Page 120)". SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 38 Example 1 of a 3SK1 Advanced system configuration with 3RM1 Failsafe motor starter ① 3SK1220 input expansion ② 3SK1Advanced basic unit ③ 3SK1211 or 3RQ1 output expansion ④ Output expansion for 3RM1Failsafe motor starter SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 39 3SK1230 power supply ② 3SK1220 input expansion ③ 3SK1Advanced basic unit ④ 3SK1211 or 3RQ1 output expansion ⑤ Output expansion for 3RM1Failsafe motor starter ⑥ 3SK1213 output expansion SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 40 Description 3.5 3SK1 system SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 41: Safety Systems - General Information
For further information, refer to the brochure "Safety of machines and plants" which is available here as a download: Functional safety (http://www.siemens.com/safety). SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 42: Safety Function
• Initiating a reaction upon detection of faults. The 3SK1 products described in this manual are evaluation units for safety functions. Reacting (actuators): • Switching off the hazard by means of downstream actuators. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 43: Basic Terminology
IEC 61508 and PL e (Cat. 4) in accordance with DIN EN ISO 13849-1 are redundantly configured with regard to the internal logic as well as with regard to the output circuits. Figure 4-1 Single-channel sensor connection SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 44: Cross-Circuit Detection
With 3SK1 relays, the signaling circuits are always implemented as NC circuits. This means that when the safety function is triggered, or a fault is detected, the signaling circuits will close. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 45: Feedback Circuit
In the case of some internal device faults, and when disconnecting the supply voltage, these safety-related outputs are switched off instantaneously . SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 46: Automatic Start
SIL 3 (IEC 62061), the monitored start must be used in the case of EMERGENCY STOP. For other safety sensors/functions, the necessity for a monitored start command depends on the risk assessment. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 47: Two-Hand Operation/Synchronism
The two-hand circuit must be marked in compliance with EN 574 EN 13851. You can find information on determining the response time in the section entitled Response times (Page 180). SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 48: Cascading
For capacitive and inductive loads, we recommend an adequate protective circuit. In this way, electromagnetic interference can be suppressed and contact service life increased. You can find more information in the SIRIUS Innovations - SIRIUS 3RT2 Contactors/Contactor Assemblies manual (http://support.automation.siemens.com/WW/view/en/60306557). SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 49 V1.0.0 and product version E01) it is not possible to achieve PL d/e/Cat. 3/4 in accordance with ISO 13849-1 or SILCL 2/3 in accordance with IEC 62061 with the wiring shown above. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 50 V1.0.0 and product version E01) it is not possible to achieve PL d/e/Cat. 3/4 in accordance with ISO 13849-1 or SILCL 2/3 in accordance with IEC 62061 with the wiring shown above. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 51: Series Connection Of Sensors
PL e (Cat. 4) in accordance with ISO 13849-1, however, they must never be connected in series because every hazardous error must be detected (independently of the operating personnel). SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 52: Use Of Magnetically Operated Switches
For more details, please refer to the documentation of the magnetically operated switch. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 53: 3Sk1 / 3Rq1 Devices
IEC 62061, SIL 3 in accordance with IEC 61508 and PL e (Cat. 4) in accordance with ISO 13849-1. The safety relays comply with DIN EN 50156-2: 2004 (Electrical equipment for furnaces and ancillary equipment). SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 54: 3Sk1111 Standard Basic Unit Instantaneous (With Relay Outputs)
The device has 3 safety-related outputs as NO circuits and one semiconductor signaling circuit (non-safety-related circuit, NC contact). On the front of the device there is a slide switch for function setting and 2 LEDs for displaying the operating states. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 55: Design
⑥ Bottom cover flap; internal inscription ⑦ DataMatrix code ⑧ Device identification label 5.1.3.4 Terminal assignment Terminal Explanation Sensor channel 1 Sensor channel 2 Non-floating sensor evaluation SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 56: Inputs
Voltage variant 110 V ... 240 V AC/DC: Only floating sensors can be connected to the 3SK1111-.AW20 device version. The 2-channel sensor is connected via T1/IN1 and T2/IN2. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 57: Outputs
Function setting Setting the functions Slide switch Start AUTO Autostart MONITORED Monitored start AUTO MONITORED In the delivery state, the slide switch is at the bottom (monitored start). SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 58 3SK1111-xAB30 monitored start A1/A2 INF/S (feedback circuit) IN1/IN2 (sensor circuit) 15 ms 20 ms 8 ms 150 ms 65 ms Safety-related output Semiconductor signaling circuit SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 59 Semiconductor signaling circuit 3SK1111-xAW20 monitored start A1/A2 INF/S (feedback circuit) IN1/IN2 (sensor circuit) 200 ms 15 ms 8 ms 150 ms Safety-related output Semiconductor signaling circuit SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 60: 3Sk1112 Standard Basic Unit Instantaneous (With Semiconductor Outputs)
In continuous operation for PL e/Cat. 4 in accordance with ISO 13849-1 or SILCL 3 in accordance with IEC 62061, the key safety values apply where the function test interval (state change of the outputs) ≤ 20 years. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 61: Function Description
All internal safety-critical parts of the circuit are cyclically monitored for faults during operation. The semiconductor outputs cyclically run through a light/ dark test for up to 2.5 ms (dynamically) to verify their correct functioning. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 62: Design
SET/RESET button ⑥ Bottom cover flap ⑦ Bottom cover flap; internal inscription ⑧ DataMatrix code ⑨ Device identification label 5.1.4.4 Terminal assignment Terminal Explanation Sensor channel 1 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 63: Inputs
Observe the following special points during commissioning of the 3SK1112 safety relay: The cascading input must be connected to terminal A1 if it is not to be used. Monitoring of the feedback circuits is not optional. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 64: Outputs
Monitored start Cross-circuit detection deacti‐ Cross-circuit detection activated vated 2 x single-channel sensor con‐ 1 x two-channel sensor connec‐ nection tion Start-up test ON Start-up test OFF SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 65 The SET/RESET pushbutton only triggers a reset for the device on which the button is pressed. State diagrams 3SK1112 3SK1112-xBB40 autostart A1/A2 (feedback circuit) IN1/IN2 (sensor circuit) 80 ms 30 ms 0 ms Safety-related output Signaling output SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 66 5.1 3SK1 standard 3SK1112-xBB40 monitored start A1/A2 INF (feedback circuit) IN1/IN2 (sensor circuit) 150 ms 20 ms 30 ms 35 ms 0 ms Safety- related output Signaling output SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 67: 3Sk1 Advanced
IIIc in compliance with EN 574 / EN 13851. 5.2.3 General device features Device properties: • 4-way DIP switch for function setting (parameterization) • SET/RESET button SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 68: Function Description
The four LEDs show the following: • Operating mode: Diagnostics • Configuration mode: DIP setting For an explanation of the operating state display, see Section Display and diagnostics (Page 185) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 69: Functions
• 3SK112.-.CB42 setting range: 0.5 ... 30 s • 3SK112.-.CB44 setting range: 5 ... 300 s Note The delay time ends when the voltage is disconnected. The time-delayed contacts change switch position. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 70: 3Sk1121 Advanced Basic Unit Instantaneous (With Relay Outputs)
= 1: Screw-type terminal; x = 2: Spring-loaded (push-in) terminal 5.2.6.2 Function description The 3SK1121 Advanced basic unit has three safety-related relay outputs and one non-safety- related signaling circuit. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 71: Design
DIP switch ⑤ SET/RESET button ⑥ Bottom cover flap ⑦ Bottom cover flap; internal inscription ⑧ DataMatrix code ⑨ Device identification label 5.2.6.4 Terminal assignment Terminal Explanation SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 72 Semiconductor signaling circuits (NC contact, relay contact) State diagram 3SK1121 3SK1121-xAB40 autostart A1/A2 INF (feedback circuit) IN1/IN2 (sensor circuit) 85 ms 35 ms 35 ms Safety-related output Signaling circuit SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 73: 3Sk1121 Advanced Basic Unit Time-Delayed (With Relay Outputs)
Additional / alternative device characteristics • 2 instantaneous safety-related outputs (NO contacts) • 2 time-delayed safety-related outputs (NO contacts), • Potentiometer for setting the delay time • Time function: With OFF-delay SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 74: Design
DIP switch ⑥ SET/RESET button ⑦ Bottom cover flap ⑧ Bottom cover flap; internal inscription ⑨ DataMatrix code ⑩ Device identification label 5.2.7.3 Terminal assignment Terminal Explanation SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 75 Delayed safety-related output 2 (NO contact, relay contact) State diagrams 3SK1121-xCB4y 3SK1121-xCB4y autostart A1/A2 (feedback circuit) IN1/IN2 (sensor circuit) 85 ms 35 ms 35 ms Safety-related output Safety-related output SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 76: 3Sk1122 Advanced Basic Unit Instantaneous (With Semiconductor Outputs)
24 V DC x = 1: Screw-type terminal; x = 2: Spring-loaded (push-in) terminal Additional or alternative device features • 3 safety-related semiconductor outputs • 1 semiconductor signaling circuit SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 77 In continuous operation for PL e/Cat. 4 in accordance with ISO 13849-1 or SILCL 3 in accordance with IEC 62061, the key safety values apply where the function test interval (state change of the outputs) ≤ 20 years. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 78: Design
DIP switch ⑤ SET/RESET button ⑥ Bottom cover flap ⑦ Bottom cover flap; internal inscription ⑧ DataMatrix code ⑨ Device identification label 5.2.8.3 Terminal assignment Terminal Explanation SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 79 (switching to P potential, 24 V DC) State diagrams 3SK1122-xAB40 3SK1122-xAB40 autostart A1/A2 INF (feedback circuit) IN1/IN2 (sensor circuit) 80 ms 30 ms 0 ms Safety-related outputs Signaling output SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 80: 3Sk1122 Advanced Basic Unit Time-Delayed (With Semiconductor Outputs)
Additional / alternative device characteristics • 2 instantaneous semiconductor outputs • 2 time-delayed semiconductor outputs • Potentiometer for setting the delay time • Time function: With OFF-delay SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 81 In continuous operation for PL e/Cat. 4 in accordance with ISO 13849-1 or SILCL 3 in accordance with IEC 62061, the key safety values apply where the function test interval (state change of the outputs) ≤ 20 years. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 82: Design
DIP switch ⑥ SET/RESET button ⑦ Bottom cover flap ⑧ Bottom cover flap; internal inscription ⑨ DataMatrix code ⑩ Device identification label 5.2.9.3 Terminal assignment Terminal Explanation SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 83 (switching to P potential, 24 V DC) State diagrams 3SK1122-xCB4y 3SK1122-xCB4y autostart A1/A2 INF (feedback circuit) IN1/IN2 (sensor circuit) 80 ms 150 ms 0 ms Safety-related outputs Safety-related outputs SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 84: 3Sk1120 Advanced Basic Unit Instantaneous (With Semiconductor Outputs)
3SK1120 Advanced basic unit instantaneous (with semiconductor outputs) 5.2.10.1 Device features Article number 3SK1120-xAB40 24 V DC x = 1: Screw-type terminal; x = 2: Spring-loaded (push-in) terminal SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 85 In continuous operation for PL e/Cat. 4 in accordance with ISO 13849-1 or SILCL 3 in accordance with IEC 62061, the key safety values apply where the function test interval (state change of the outputs) ≤ 20 years. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 86: Design
Bottom cover flap; internal inscription ⑧ DataMatrix code ⑨ Device identification label 5.2.10.3 Terminal assignment Terminal Explanation Sensor channel 1 Sensor channel 2 NO contact/NC contact evaluation START pushbutton circuit SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 87: Status Diagrams
(switching to P potential, 24 V DC) 5.2.10.4 Status diagrams State diagrams 3SK1120-xAB40 3SK1120-xAB40 Autostart A1/A2 INF (feedback circuit) IN1/IN2 (sensor circuit) 80 ms 30 ms 0 ms Safety-related outputs Signaling output SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 88 5.2 3SK1 Advanced 3SK1120-xAB40 monitored start A1/A2 INF (feedback circuit) IN1/IN2 (sensor circuit) 150 ms 0 ms 20 ms 30 ms 35 ms Safety-related outputs Signaling output SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 89: 3Sk1 Output Expansions
51/52 of 3SK1211 (4RO) or 41/42 of 3SK1213 (3RO) is used for monitoring the output expansions. In the 24 V DC variants, the expansion units can be activated and evaluated via the 3ZY12 device connectors. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 90: Display Of The Operating State
24 V AC 3SK1211-xBB40 24 V DC 3SK1211-xBW20 110 ... 240 V AC / DC (wide-range supply) x = 1: Screw-type terminal; x = 2: Spring-loaded (push-in) terminal SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 91 • 1 NC circuit as feedback contact for the 3SK1211 output expansion to the upstream basic unit • 3ZY12 device connectors. • Enclosure width 22.5 mm • Removable terminals SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 92: Design Of 3Sk1211-.B..0
Top cover flap ② Top cover flap; internal inscription ③ Display LEDs ④ Bottom cover flap ⑤ Bottom cover flap; internal inscription ⑥ DataMatrix code ⑦ Device identification label SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 93: Design Of 3Sk1211-.Bb40
⑧ Device identification label 5.3.5.4 Terminal assignment Terminal Explanation + (L+ for 3SK1211-.BW20) - (N- for 3SK1211-.BW20) 13 - 14 Safety-related output 1 (NO contact, relay contact) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 94: Output Expansion 3Sk1213
• 1 NC circuit as feedback contact for the 3SK1213 output expansion for the upstream basic unit • 3ZY12 device connectors. • Enclosure width 90 mm • Removable terminals SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 95: Design Of 3Sk1213-.Ab40
① Top cover flap ② Display LEDs ③ Slide switch ④ DataMatrix code ⑤ Bottom cover flap ⑥ Device identification label ⑦ Screw-type terminals ⑧ Spring-loaded terminal SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 96: Design Of 3Sk1213-.A.20
Safety-related output 2 (NO contact, relay contact) 33 - 34 Safety-related output 3 (NO contact, relay contact) 41 - 42 NC circuit as feedback contact (NC, relay contact) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 97: 3Rm1 Failsafe Motor Starters
3SK1 basic unit. More detailed technical information is available in the SIRIUS 3RM1 motor starters (http:// support.automation.siemens.com/WW/view/en/66295730) manual on the Internet. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 98: 3Rq1 Output Expansion
You can control the output expansions via the supply voltage (A1/A2). Alternatively, with the 24 V AC/DC variant, you can control the output expansion via the 3ZY12 device connector. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 99: Function Description
24 ... 240 V AC/DC 17.5 mm 3RQ1000-xHB00 2NO / 2NC 24 V DC 22.5 mm 3RQ1000-xHB00 2NO / 2NC 24 ... 240 V AC/DC 22.5 mm SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 100 • 1 NC circuit as feedback contact for output expansion to the up-circuit basic unit • 3ZY12 device connectors. • Enclosure widths 17.5 mm / 22.5 mm • Removable terminals SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 101: 3Rq11.00-.E.00, 3Rq1000-.G.00 Configuration
Top cover flap ② Top cover flap; internal inscription ③ Display LEDs ④ Bottom cover flap ⑤ Bottom cover flap; internal inscription ⑥ DataMatrix code ⑦ Device identification label SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 102: 3Rq1000-Xhb00, 3Rq1000-Xlb00 Configuration
Terminal assignment 3RQ100-.E.00 / 3RQ1200-.E.00 Terminal Explanation 13 - 14 Safety-related output 1 (NO contact, relay contact) 21 - 22 NC circuit as feedback contact (NC, relay contact) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 103 Safety-related output 3 (NO contact, relay contact) 43 - 44 Safety-related output 4 (NO contact, relay contact) 51 - 52 NC circuit as feedback contact (NC, relay contact) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 104: 3Sk1 Input Expansions
The SILCL/PL achieved by the overall system depends on the external connection of sensors and actuators. The input expansion 3SK1220 is supplied via the 3ZY12 device connectors. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 105: Design
Terminal Explanation Sensor channel 1 Sensor channel 2 NO contact/NC contact evaluation ON button circuit Test output 1 (for IN1, PAR) Test output 2 (for IN2, INF) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 106: Display Of The Operating State
You can find additional information on this under "Advanced" in the Chapter Functions (Page 69). State diagrams 3SK1220 3SK1220 Autostart IN1/IN2 (sensor circuit) 80 ms 30 ms Signal to Basic unit SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 107: Power Supply 3Sk1230
• Rated output voltage: 24 V DC • Rated output current: 0.6 A • 1 LED for status display • Connection interface • Enclosure width 22.5 mm • Removable terminals SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 108: Applications
The "INS" START pushbutton input of the 3SK1 device series must be supplied from the 3SK1230 power supply. NOTICE Two power supplies in parallel are not permissible! Only one 3SK1230 power supply is permitted in each system configuration. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 109: Design
Bottom cover flap ⑤ Bottom cover flap; internal inscription ⑥ DataMatrix code ⑦ Device identification label 5.5.2.4 Terminal assignment Terminal Explanation +24 V DC +24 V DC SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 110: Display Of The Operating State
The operating state and functioning of the device are indicated by an LED: • (1) DEVICE Operating states State Meaning DEVICE Green Output voltage OK Flashing Overload No voltage SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 111: System Configuration
• Motor feeders up to 3 kW (400 V) can be implemented quickly and easily using 3RM1 Failsafe motor starters. The motor starters can be easily connected as output expansions in the 3SK1 system. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 112: Maximum System Configuration
A maximum of 5 expansions are permitted on the left of the basic unit and 5 expansions on the right. 5 at the most 5 at the most Input expansion Output expansion DC 24 V L+ L- SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 113 3RM1 Failsafe motor starters Example 1) 1 x 3SK1230 power supply ; 5 x 3SK1220 input expansion; 1 x 3SK112 basic unit; 2 x 3SK1211 output expansion SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 114 110 ... 240 V AC L1 N Example 3) 1 x 3SK1230 power supply; 2 x 3SK1220 input expansion; 1 x 3SK112 basic unit; 2 x 3RM1 Failsafe motor starter SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 115 System configuration 6.1 General information Input Motor starter expansions 3RM1 Failsafe 110 ... 240 V AC L1 N SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 116: 3Zy12 Device Connector
Width 22.5 mm Article number Device termination connector for 3ZY1212-2FA00 3RM1 motor starter Width 22.5 mm 3ZY1212-2DA00 3SK1 safety relay 3SK1 / 3RQ1 output expansion Width 22.5 mm SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 117 3SK1 connector for 3RQ1 17.5 mm 22.5 mm safety relay 17.5 mm 22.5 mm 3ZY1212-1DA00 3ZY1212-1BA00 3ZY1212-2BA00 3ZY1212-2DA00 3SK1 Advanced basic units 3SK1121 3SK1122 3SK1120 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 118 (17.5 mm) 3RQ1*H/L* (22.5 mm) Input expansions 3SK1 3SK1220 3SK1230 power supply 3RM1 Failsafe motor starters 3RM1 Set consists of 3ZY1212-2FA00 device connector and 3ZY1210-2AA00 device connector SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 119: Applications
Failsafe motor starters on the right of a basic unit. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 120: System Configuration Rules
If a purely instantaneous 3SK112 basic unit is used, the slide switch MUST be set to the (UNDELAYED) position. The 3RQ1 output expansions do not have a slide switch and always react to the (UNDELAYED) output signal. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 121 Further configuration notes: NOTICE Only one 3SK1 Advanced basic unit is permitted in each system The safety function is not guaranteed when more than one basic unit is used. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 122 • It is only permitted to connect a voltage of 24 V DC to the terminals on the basic unit. • It is not permitted to supply 24 V DC to an expansion component or 3RM1 Failsafe motor starter. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 123: Mounting
Hazardous voltage. Can cause death or serious injury To ensure touch protection and degree of protection IP20, screw in all screws which are not used for conductor clamping and close the terminal covers. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 124: Terminal Coding
You can provide the terminals with coding pins (3ZY1440-1AA00). This helps you to avoid errors when replacing the terminals. Figure 7-1 Module with coding pins Figure 7-2 Stud position rotated by 60° in each case SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 125: Mounting The Devices On A Level Surface
• Plastic push-in lugs: Refer to the accessories list for the relevant article number in the chapter "Accessories (Page 227)". Procedure Figure 7-3 17.5 mm and 22.5 mm devices SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 126 3. Insert the screws through the elongated holes into the push-in lugs. 4. Screw the device onto the level surface so that it is secure. Tightening torque: 1 Nm SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 127: Disassembling Devices From A Level Surface
Before starting work, therefore, disconnect the system and devices from the power supply. Requirements • The terminals have been removed or disconnected. Procedure Figure 7-5 Disassembling 17.5 mm and 22.5 mm devices SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 128 Disassembling 90 mm devices 1. Hold the device firmly. 2. Unscrew the cap screws. 3. Lift the device from the level surface. 4. Remove the push-in lugs from the device. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 129: Mounting 22.5 Mm/17.5 Mm Devices On A Standard Mounting Rail
1. Place the back of the device onto the upper edge of the standard mounting rail. 2. Press the lower half of the device against the DIN rail until the device engages. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 130: Mounting The 90 Mm Devices On A Standard Mounting Rail
1. Place the back of the device onto the upper edge of the standard mounting rail. 2. Press the lower half of the device against the DIN rail until the device engages. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 131: Removing Devices From A Standard Mounting Rail
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. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 132: Mounting 22.5 Mm/17.5 Mm Devices With Device Connectors On A Standard Mounting Rail
2. Press the lower half of the device connector against the standard mounting rail until the connector engages. Repeat the procedure with all the required device connectors. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 133 6. Set the slide switch in the device termination connector for the 3SK1 safety relay to the following positions: • below 3SK1 basic device position 2 (bottom; i.e. open) • below 3SK1211 output expansion position 1 (top; i.e. closed) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 134 7. Mount the device on the device connector. 8. Mount all the devices required for the system configuration in accordance with the respective installation guidelines on the device connectors. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 135: Removing 22.5 Mm/17.5 Mm Devices With Device Connectors From A Standard Mounting Rail
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. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 136 7.9 Removing 22.5 mm/17.5 mm devices with device connectors from a standard mounting rail 4. Pull the device away from the device connector. 5. Separate the device connectors using a screwdriver. 6. Remove the cover. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 137 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. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 138: Mounting 90 Mm Devices With Device Connectors On A Standard Mounting Rail
2. Press the lower half of the device connector against the standard mounting rail until the connector engages. 3. Repeat the procedure with all the required device connectors. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 139 5. Mount the cover on the left of the first device connector piece and the device connectors supplied in the set for enclosures of 45 mm upwards (right-hand side). 112,5 22,5 6. Note the clearances required for the 90 mm devices. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 140 7. Mount the 3SK1213 output expansion on the device connectors. 8. Mount all the devices required for the system configuration on the device connectors in accordance with the respective installation guidelines. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 141: 7.11 Removing 90 Mm Devices With Device Connectors From A Standard Mounting Rail
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. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 142 7.11 Removing 90 mm devices with device connectors from a standard mounting rail 4. Pull the device away from the device connector. 5. Separate the device connectors using a screwdriver. 6. Disassemble the terminating section. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 143 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. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 144: Mounting 22.5 Mm/17.5 Mm Devices With Device Connectors On The Wall
Refer to the accessories list for the relevant article number in the chapter "Accessories (Page 227)". Procedure for mounting on a level surface The figures show 22.5 mm devices. The 17.5 mm devices are mounted correspondingly. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 145 (not applicable when mounting 3RM1 Failsafe motor starters) 3. Hold the device connector against the level surface prepared for screw fastening. 4. Insert the screws through the holes in the device connectors. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 146 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. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 147: 7.13 Removing 22.5 Mm/17.5 Mm Devices With Device Connectors From The Wall
The figures show 22.5 mm devices. The 17.5 mm devices are removed correspondingly. 1. Unlock the device (below) using a screwdriver. 2. Pull the lower half of the device away from the device connector. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 148 3. Unlock the device (above) using a screwdriver. 4. Pull the device away from the device connector. 5. Release the screws. 6. Separate the device connectors. 7. Remove the cover. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 149: Mounting 90 Mm Devices With Device Connectors On The Wall
• Use the device termination connector set for 3SK1 safety relays, > 45 mm wide. Refer to the accessories list for the relevant article number in the chapter "Accessories (Page 227)". Procedure SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 150 Mount the device connector supplied in the set for enclosures of 45 mm upwards (right-hand side). Tightening torques: – Top: < 0.1 Nm – Bottom: 1 Nm SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 151 7. Mount the 3SK1213 output expansion on the device connectors. 8. Mount all the devices required for the system configuration in accordance with the respective installation guidelines on the device connectors. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 152: Removing 90 Mm Devices With Device Connectors From Wall
• The terminals have been removed or disconnected. Procedure 1. Unlock the device (bottom) using a screwdriver. 2. Pull the lower half of the device away from the device connector. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 153 3. Unlock the device (top) using a screwdriver. 4. Pull the device away from the device connector. 5. Release the screws. 6. Separate the device connectors. 7. Remove the cover. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 154: Mounting The Sealable Cover
As an alternative, Siemens also offers a sealable membrane (3TK2820-0AA00) for securing the safety relays. The sealable membrane is fixed to the front of the safety relay and secures the DIP switches and the buttons (and potentiometers) against unintentional readjustment.
Page 155: Connection
Hazardous voltage. Can cause death or serious injury To ensure touch protection and degree of protection IP20, screw in all screws which are not used for conductor clamping and close the terminal covers. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 156: 22.5 Mm/17.5 Mm Devices
The inside faces of the terminal covers are labeled with the designations of the relevant terminals. The position of the label corresponds to the position of the respective terminal. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 157: Connection Data For 3Sk1 Terminals
A = 10 mm 1 x 0.5 ... 2.5 mm² 2 x 0.5 ... 1.0 mm² Flexible cable Not permissible 1 x 20 to 14 2 x 18 to 16 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 158: Connection Data For 3Rq1 Terminals
Tools and materials • Cross-tip screwdriver size PZ 1 x 80. • For suitable connection cross-sections of the cables, see the chapter "Connection data for 3SK1 terminals (Page 157)". SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 159: Disconnecting The Screw-Type Terminals
Tools • Cross-tip screwdriver size PZ 1 x 80 Procedure 1. Unscrew the screw of the screw-type terminal. 2. Remove the cable from the unscrewed screw terminal. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 160: Wiring Rules For Spring-Loaded Terminal (Push-In System)
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 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 161: Connection Data For 3Rq1 Spring-Loaded Terminal (Push-In System)
• 0.5 x 3 mm screwdriver DIN 5264 (for finely-stranded conductors only). • For suitable connection cross-sections of the cables, see the chapter "Connection data for 3SK1 terminals (Page 157)". SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 162: Disconnect The Spring-Loaded (Push-In) Terminal
Disconnect the spring-loaded (push-in) terminal WARNING Hazardous Voltage Can Cause Death, Serious Injury, or Property Damage. Before starting work, therefore, disconnect the system and devices from the power supply. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 163: Attaching The Terminals
Before starting work, therefore, disconnect the system and devices from the power supply. Requirements You must have removed the terminals, for the purpose of replacing a device, for example. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 164: Disconnecting
2. Slide the detachable terminals back until they audibly engage. 8.2.12 Disconnecting WARNING Hazardous voltage Can Cause Death, Serious Injury, or Property Damage. Before starting work, therefore, disconnect the system and devices from the power supply. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 165 3. Lift the terminals out of the guide rail of the device. Screw terminals: Disconnecting the conductor 1. Unscrew the screw of the screw-type terminal. 2. Remove the cable from the unscrewed screw-type terminal. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 166 1. Insert the screwdriver into the rectangular opening of the push-in terminal until it engages. Please observe a 10° horizontal angular deviation of the screwdriver to the oval opening. 2. Remove the cable from the oval opening. 3. Remove the screwdriver. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 167: Devices 90 Mm
Ther removable terminals are located under the lower terminal cover. ① ② To open the terminal cover, press on it in the middle and lift it up SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 168: Connection Data For Terminals
8.3.3 Connecting terminals WARNING Hazardous voltage Can Cause Death, Serious Injury, or Property Damage. Before starting work, therefore, disconnect the system and devices from the power supply. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 169 Please observe a 10° horizontal angular deviation of the screwdriver to the oval opening. 2. Insert the cable into the oval opening as far as it will go. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 170: Mounting Terminals
1. Insert the detachable terminals into the guide rail of the device. 2. Slide the detachable terminals back until they audibly engage. 3. Check that the clip of the removable terminals closes flush with the front panel. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 171: Disconnecting
1. Insert a flat-head screwdriver between the clip of the terminals and the front panel. 2. Pull the terminals out to the front. 3. Lift the terminals out of the guide rail of the device. Disconnecting screw-type terminals SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 172 Please observe a 10° horizontal angular deviation of the screwdriver to the oval opening. 2. Remove the cable from the oval opening. 3. Remove the screwdriver. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 173: Device Replacement
– Chapter "Removing 22.5 mm/17.5 mm devices with device connectors from a standard mounting rail (Page 135)" – Chapter "Removing 90 mm devices with device connectors from a standard mounting rail (Page 141)" SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 174 After applying the supply voltage, the new 3SK1 basic unit checks whether the hardware configuration matches the device configuration. If there are no deviations, the system re-enters safety mode. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 175: Configuration / Operation
Following a restart, the device remains in safety configuration mode during power up (all safety-related outputs are shut down) until the new delay time is accepted by pressing the SET/RESET button. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 176: Explanation Of The Device's Functions
In this case, both sensors are AND-connected. Simultaneity is not monitored. Startup testing After a power failure, startup testing requires that the sensors at IN1 and IN2 are actuated once by the system operator. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 177 Floating contact blocks must be connected between A1 / +24 V and INK . It is important to note that the start function of cascading input INK corresponds to the start function of sensor inputs IN1, IN2 . SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 178 If the voltage Us is disconnected on devices with time-delayed outputs between switching the instantaneous outputs and the time-delayed outputs, the delay time expires when the voltage Us is restored, and the time-delayed contacts change their switch positions. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 179: Modes
Error mode Error mode is indicated by a red "DEVICE" LED or by a red "SF" LED. In error mode, the device ALWAYS changes to the safe state. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 180: Response Times
Examples Example 1 3SK1121-.AB40 + 3SK1211.BB40 Response time: 40 ms 50 ms Example 2 3 x 3SK1220 + 3SK1122-.AB40 + 3SK1211-.BB40 + 3RM1 Failsafe motor starter SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 181 • 3SK1211 output expansion = total response time EE with GG + AE = 170 ms • 3RM1 Failsafe = 160 ms + 3RM1 Failsafe motor starter response time SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 182 Configuration / operation 9.4 Response times SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 183: Commissioning
Observe the following during commissioning: The cascading input must be bypassed (24 V DC) if it is not to be used. Monitoring of the feedback circuits is not optional. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 184 Commissioning SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 185: Display And Diagnostics
Yellow Power-up DIP (2) position: right Yellow flashing Configuration mode DIP (2) position: right START button pressed too long Green/yellow flashing Instantaneous outputs inactive, delayed outputs active SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 186 (A1/A2) to an expansion unit that is connected via a device connector) * LED flashes briefly in configuration mode due to lamp test SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 187: Power-Up
Configuration mode: Special two-hand operation configuration Flickering red Configuration mode: impermissible configuration 2 x single-channel (4) SF Yellow or yellow flashing Startup testing off Startup testing ON SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 188: Error Statuses
Display and diagnostics 11.3 Error statuses 11.3 Error statuses Display Explanation (1) DEVICE Device error (4) SF Group error Red flashing Fault message SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 189: Diagnostics
With input expansion: Missing enabling signal of input ex‐ Green Yellow flash‐ pansion. Configuration has been changed (PAR, DIP switch, potenti‐ Green/yellow — — — ometer) flashing SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 190 System stop Restart only possible by disconnecting and re-connecting the operating voltage. On time-delayed devices, the LED flashes green/yellow provided the time-delayed outputs are still switched on SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 191: Technical Data
12.1 Technical data in Siemens Industry Online Support Technical data sheet You can also find the technical data of the product at Siemens Industry Online Support (https:// support.industry.siemens.com/cs/ww/en/ps/). 1. Enter the full article number of the desired device in the "Product" field, and confirm with the Enter key.
Page 192: Electrical Endurance
(typical) AC-1 500,000 85,000 860,000 140,000 1,300,000 210,000 AC-15 300,000 50,000 850,000 85,000 1,100,000 120,000 DC-13 300,000 50,000 2,000,000 230,000 7,000,000 1,100,000 DC-1 500,000 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 193 Ue (V) Ie (A) value Electrical endurance (operating cycles) of safety-related outputs (typical) AC-1 340,000 170,000 AC‑15 85,000 85,000 220,000 220,000 DC‑13 120,000 13,000 DC‑1 1,560,000 780,000 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 194: Overview Tables
12.3 Overview tables 12.3 Overview tables Overview tables technical data You will find overview tables with technical data in the "Product information" tab in our online ordering system. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 195: Dimension Drawings
Dimension drawings 13.1 CAx data You can find the CAx data in the Siemens Industry Online Support (https:// support.industry.siemens.com/cs/ww/en/ps/). 1. Enter the full article number of the desired device in the "Product" field, and confirm with the Enter key. 2. Click the "CAx data link.
Page 196 Dimension drawings 13.1 CAx data SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 197: Circuit Diagrams
Circuit diagrams 14.1 CAx data You can find the CAx data in the Siemens Industry Online Support. 1. Enter the full article number of the desired device in the "Product" field, and confirm with the Enter key. 2. Click the "CAx data link.
Page 198: Internal Circuit Diagrams
Circuit diagrams 14.2 Internal circuit diagrams 14.2 Internal circuit diagrams 14.2.1 Internal circuit diagrams for 3SK1 Standard basic units Basic unit 3SK1111-.AB30 Standard relay instantaneous (24 V) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 199 Circuit diagrams 14.2 Internal circuit diagrams Basic unit 3SK1111-.AW20 Standard relay instantaneous (110 - 240 V) Basic unit 3SK1112-.BB40 Standard instantaneous SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 200: Internal Circuit Diagrams For 3Sk1 Advanced Basic Units
Circuit diagrams 14.2 Internal circuit diagrams 14.2.2 Internal circuit diagrams for 3SK1 Advanced basic units Basic unit 3SK1121-.AB40 Advanced relay instantaneous Basic unit 3SK1121-.CB4. Advanced relay time-delayed SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 201 Circuit diagrams 14.2 Internal circuit diagrams Basic unit 3SK1122-.AB40 Advanced solid-state instantaneous Basic unit 3SK1122-.CB4. Advanced solid-state time-delayed SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 202: Internal Circuit Diagrams For Expansion Units
Circuit diagrams 14.2 Internal circuit diagrams Basic unit 3SK1120-.AB40 Advanced 17.5 mm solid-state instantaneous 14.2.3 Internal circuit diagrams for expansion units 3SK1211 output expansion (110 - 240 V) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 203 Circuit diagrams 14.2 Internal circuit diagrams 3SK1211 output expansion (24 V DC) 3SK1213-.A.20 output expansion (110 - 240 V) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 204 Circuit diagrams 14.2 Internal circuit diagrams 3SK1213-.AB40 output expansion (24 V DC) Output expansion 3RQ1000-.EB00 (24 V DC) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 205 Circuit diagrams 14.2 Internal circuit diagrams Output expansion 3RQ1000-.EW00 (24 - 240 V AC/DC) Output expansion 3RQ1000-.GB00 (24 V DC) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 206 Circuit diagrams 14.2 Internal circuit diagrams Output expansion 3RQ1000-.GW00 (24 - 240 V AC/DC) Output expansion 3RQ1000-.HB00 (24 V DC) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 207 Circuit diagrams 14.2 Internal circuit diagrams Output expansion 3RQ1000-.HW00 (24 - 240 V AC/DC) Output expansion 3RQ1000-.LB00 (24 V DC) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 208 Circuit diagrams 14.2 Internal circuit diagrams Output expansion 3RQ1000-.LW00 (24 - 240 V AC/DC) Output expansion 3RQ1200-.EB00 (24 V DC) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 209 Circuit diagrams 14.2 Internal circuit diagrams Output expansion 3RQ1200-.EW00 (24 - 240 V AC/DC) 3SK1220 input expansion SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 210 Circuit diagrams 14.2 Internal circuit diagrams 3SK1230 power supply SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 211: Typical Circuits
Monitored — Bottom Up to PL in accordance with ISO 13849-1 c Up to Safety Integrity Level (SILCL) to IEC 62061 * For 3SK1111-.AB30 basic unit only SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 212 Auto Monitored — Up to PL in accordance with ISO 13849-1 c Up to Safety Integrity Level (SILCL) to IEC 62061 * For 3SK1111-.AB30 basic unit only SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 213 Monitored — Bottom Up to PL in accordance with ISO 13849-1 e Up to Safety Integrity Level (SILCL) to IEC 62061 * For 3SK1111-.AB30 basic unit only SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 214 Auto Monitored — Up to PL in accordance with ISO 13849-1 e Up to Safety Integrity Level (SILCL) to IEC 62061 * For 3SK1111-.AB30 basic unit only SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 215 • 3SK1111-.AB30 Standard relay Slide switch Auto Monitored — Up to PL in accordance with ISO 13849-1 e Up to Safety Integrity Level (SILCL) to IEC 62061 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 216 3SK112 / 3SK122 Advanced DIP switch — Left Right Right Up to PL in accordance with ISO 13849-1 e Up to Safety Integrity Level (SILCL) to IEC 62061 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 217 3SK112 / 3SK122 Advanced DIP switch — Left Left Right Up to PL in accordance with ISO 13849-1 e Up to Safety Integrity Level (SILCL) to IEC 62061 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 218 3SK112 / 3SK122 Advanced DIP switch — Right Left Left Up to PL in accordance with ISO 13849-1 c Up to Safety Integrity Level (SILCL) to IEC 62061 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 219 Up to PL in accordance with ISO 13849-1 c Up to Safety Integrity Level (SILCL) to IEC 62061 Also possible: 2 x single-channel with T1-IN1, T2-IN2 and DIP switch 2 cross-circuit detection to SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 220 Sensor: NC/NO sensor • 3SK112 / 3SK122 Advanced DIP switch — Left Right Right PL in accordance with ISO 13849-1 Safety Integrity Level (SILCL) to IEC 61508 3 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 221 You can find further information on two-hand operation in chapter Two-hand operation/ synchronism (Page 47). Further information: • SIRIUS Safety Integrated application manual (https:// support.industry.siemens.com/cs/ww/en/view/81366718) • FAQs on 3SK1 (https://support.industry.siemens.com/cs/ww/en/ps/16382/faq) SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 222: Typical Circuits Of 3Sk1 Safety Relays With 3Rm1 Failsafe Motor Starters
In this case, do not connect anything to terminals A1 and A2 of the 3RM1 Failsafe motor starters in order to prevent bypassing of the safety function. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 223 * If there is a common reference potential for the two inputs, it suffices to establish a ground connec‐ tion. If there are separate potentials or controls, both connections must be assigned. SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 224: 3Sk1 Safety Relay Wired With 3Rm1 Failsafe Motor Starter
(detecting/evaluating/reacting) must be designed accordingly. Note A fuse must be fitted as short-circuit protection (4 A gL/gG) in the supply line to the supply voltage of 3RM1 (L1). SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 225 Circuit diagrams 14.4 Typical circuits of 3SK1 safety relays with 3RM1 Failsafe motor starters Figure 14-1 3SK1 safety relay with 3RM13 reversing starter SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 226: Additional Applications
Circuit diagrams 14.5 Additional applications 14.5 Additional applications You can find additional applications in the SIRIUS Safety Integrated application manual on the internet (https://support.industry.siemens.com/cs/document/83150405?lc=en-WW). SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 227 3RT2900-1SB20 17 sheets of 20 labels; size 20 x 7 mm SIRIUS device identification label 3RT2900-1SB60 10 sheets of 306 adhesive labels; size 19 x 6 mm SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 228 ✓ 3SK1112 ✓ 3SK1120 ✓ 3SK1121 ✓ 3SK1122 ✓ bottom ✓ top Output expansions 3SK1211 ✓ 3SK1213 3RQ1 ✓ Input expansions 3SK1220 ✓ top 3SK1230 ✓ bottom SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 229 Index FAQs, 19 References, 19 SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...
Page 230 Index SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005...

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Sirius 3rq1

Siemens SIRIUS 3SK1 Equipment Manual

1 Introduction

2 Safety Instructions

3 Description

4 Safety Systems - General Information

3 SK1 / 3RQ1 Devices

6 System Configuration

7 Mounting

8 Connection

9 Configuration / Operation

10 Commissioning

11 Display and Diagnostics

12 Technical Data

13 Dimension Drawings

14 Circuit Diagrams

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Summary of Contents for Siemens SIRIUS 3SK1