Page 1 Hintergrund coolgray 20%, ohne Verlauf Bild soll hinter den Balken laufen damit dieTransparenz zur Geltung kommt. Transparenz des Balkens nicht verändern! 8 mm Siemens Serif OT, Semibold, 36/30/26 PT, weiss Tecnica di manovra industriale Gama industrial Appareillages industriels Industrial Controls...
Page 3 ___________________ 3SK1 safety relays Introduction Product-specific safety ___________________ information ___________________ Product overview for 3SK1 Industrial Controls Safety systems - General ___________________ information Safety engineering ___________________ 3SK1 safety relays 3SK1 devices ___________________ System configuration Manual ___________________ Circuit diagrams ___________________ Mounting ___________________ Connection ___________________ Configuration / operation...
Page 4 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 5: Table Of Contents
Table of contents Introduction.............................. 11 User responsibility for system design and function..............11 Required basic knowledge......................11 Validity range ..........................11 Definitions ............................11 DataMatrix code ...........................12 Correction sheet...........................13 Product-specific safety information ......................15 General safety notes........................15 Safety information for hazardous areas..................17 Intended use ..........................17 Current information about operational safety................18 Declaration of conformity ......................18 Product overview for 3SK1 ........................
Page 6 Table of contents 4.3.9 Monitored start ..........................35 4.3.10 Two-hand operation/synchronism....................36 4.3.11 Cascading ........................... 36 4.3.12 Startup testing ..........................37 4.3.13 Connection of actuators ......................37 4.3.14 Series connection of sensors...................... 40 3SK1 devices............................43 3SK1 standard ..........................43 5.1.1 General information........................
Page 7 Table of contents 5.2.10 3SK1120 Advanced basic unit instantaneous (with solid-state outputs) ........75 5.2.10.1 Device features ..........................75 5.2.10.2 Design ............................76 5.2.10.3 Terminal assignment........................77 3SK1 output expansions ......................78 5.3.1 Applications..........................78 5.3.2 Function description........................78 5.3.3 Display of the operating state ......................79 5.3.4 Function setting..........................79 5.3.5 Output expansion 3SK1211 ......................80...
Page 8 Table of contents 7.2.1 Sensor wiring ..........................111 7.2.2 Typical circuits........................... 113 Mounting..............................123 Warning notices ........................123 Terminal coding......................... 124 Mounting the devices on a level surface................... 125 Disassembling devices from a level surface ................127 Mounting the 22.5 mm/17.5 mm device on a standard mounting rail........129 Mounting the 90 mm devices on a standard mounting rail ............
Page 9 Table of contents 10.3 Modes ............................183 10.4 Response times .........................184 10.4.1 Response times .........................184 Commissioning ............................185 Display and diagnostics ......................... 187 12.1 LED display ..........................187 12.2 Power-up............................189 12.3 Error statuses..........................189 12.4 Diagnostics..........................189 Technical data ............................193 13.1 General technical data .......................193 13.2 Basic units..........................197 13.2.1...
Page 10 Table of contents 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 11: Introduction
● Safety systems Validity range The manual is valid for these safety relays SIRIUS 3SK1. 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 12: Datamatrix Code
MLFB 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.
Page 13: Correction Sheet
Introduction 1.6 Correction sheet Correction sheet The appendix to this manual contains a correction sheet for evaluation and feedback. Please use it to record your suggestions for improvements, additions and corrections, and return the sheet to us. This will help us to improve the next edition of the manual. Thank you.
Page 14 Introduction 1.6 Correction sheet 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 15: Product-Specific Safety Information
Product-specific safety information General safety notes Note Recycling and disposal Dispose of existing packing material in accordance with applicable regulations or recycle it. The 3SK1 safety relays are able to be recycled thanks to a low-pollutant manufacturing process. For environmentally-friendly recycling and disposal of your electronic waste, please contact a company certified for the disposal of electronic waste.
Page 16 Product-specific safety information 2.1 General safety notes CAUTION Protection against electrostatic charge When handling and installing the 3SK1 safety relays, ensure that the components are protected from being electrostatically charged. Changes to the system configuration and wiring are only permissible while the supply voltage is switched off. Connection of 3SK1 safety relays is only permissible when the power supply units (PELV and SELV) are switched off.
Page 17: Safety Information For Hazardous Areas
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 18: Current Information About Operational Safety
• Safety Integrated Newsletter Declaration of conformity The manufacturer declares that the safety components of the SIRIUS 3SK1 series in the designs marketed by us comply with the applicable basic safety and health requirements of the EC Directives* stated (including amendments) and that the stated standards* were applied in their design and construction.
Page 19: Product Overview For 3Sk1
Product overview for 3SK1 Overview Overview of 3SK1 safety relays The following tables provide an overview of the 3SK1 safety relays. 3SK1 Standard basic units Designation Voltages MLFB Basic unit 3SK1 Standard instantaneous (with relay outputs) 24 V AC/DC 3SK1111-xAB30 110 ...
Page 20 Product overview for 3SK1 3.1 Overview Expansion units Designation Voltages MLFB Output expansion 3SK1211 24 V AC 3SK1211-xBB00 24 V DC 3SK1211-xBB40 110 ... 240 V AC/DC 3SK1211-xBW20 Output expansion 3SK1213 24 V DC 3SK1213-xAB40 115 V AC 3SK1213-xAJ20 240 V AC 3SK1213-xAL20 Input expansion 3SK1220 24 V DC...
Page 21 Product overview for 3SK1 3.1 Overview Online configurator To assist you with configuration, the "SIRIUS 3SK1 safety relay configurator" is at your disposal on the Internet (www.siemens.com/industrial-controls/configurators). You can select and order the correct safety relays here and generate the complete product documentation: ●...
Page 22: Overview Of Components And Accessory Parts
Product overview for 3SK1 3.2 Overview of components and accessory parts Overview of components and accessory parts ① 3SK1 safety relay (basic unit/expansion unit) ② Top cover flap ③ Bottom cover flap ④ Terminals, 3-pole, push-in, 1 x 2.5 mm² ⑤...
Page 23: Functional Scope Of The 3Sk1 Basic Units
Product overview for 3SK1 3.3 Functional scope of the 3SK1 basic units Functional scope of the 3SK1 basic units Function 3SK1 Standard 3SK1 Advanced Type of enabling circuits Relay Solid-state Relay Solid-state Sensors Mechanical sensors ✓ ✓ ✓ ✓ Non-floating sensors ✓...
Page 24: Introduction
3.4 Introduction Introduction SIRIUS 3SK1 safety relays are mainly used 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 the safety-related functions of the safety relay.
Page 25: 3Sk1 System
Product overview for 3SK1 3.5 3SK1 system 3SK1 system 3.5.1 Standard 3.5.1.1 Typical system configuration System configuration for 3SK1 Standard A 3SK1 Standard system can comprise the following devices: ● Basic units (one basic unit per system) – Basic unit 3SK1111 Standard relay instantaneous (see also 3SK1111 Standard basic unit instantaneous (with relay outputs) (Page 44) ) –...
Page 26: Advanced
Product overview for 3SK1 3.5 3SK1 system 3.5.2 Advanced 3.5.2.1 Typical system configuration System configuration for 3SK1 Advanced A 3SK1 Advanced system can comprise the following devices: ● Basic units (one basic unit per system) – Basic unit 3SK1121 Advanced relay instantaneous (see also 3SK1121 Advanced basic unit instantaneous (with relay outputs) (Page 60) ) –...
Page 27 Product overview for 3SK1 3.5 3SK1 system Typical 3SK1 Advanced system configuration ① Power supply 3SK1230 ② Input expansion 3SK1220 ③ Basic unit 3SK1 Advanced ④ Output expansion 3SK1211 ⑤ Output expansion 3SK1213 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 28 Product overview for 3SK1 3.5 3SK1 system 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 29: Safety Systems - General Information
Safety systems - General information What is safety? Safety defines a state in which the risk of damage is reduced to a tolerable level, or which can be regarded as risk-free. Following on from this definition, functional safety concerns persons, machines and the environment. The objective of safety systems is to reduce the risk for humans and machines that is posed by a use case to an acceptable level.
Page 30 Safety systems - General information 4.2 Safety function Reacting (actuators): ● Switching off the hazard by means of downstream actuators. Detecting Evaluating Reacting (sensors) (safety relay) (actuators) 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 31: Basic Terminology
Safety systems - General information 4.3 Basic terminology Basic terminology 4.3.1 Redundancy/single-channel and two-channel Redundancy With redundancy, more than one component is implemented for the same function, so a faulty function of a component is performed instead by the other component(s). A redundant configuration reduces the probability of a function failing due to a single defective component.
Page 32: Cross-Circuit Detection
Safety systems - General information 4.3 Basic terminology Figure 4-2 Two-channel sensor connection * = positively-driven auxiliary contacts/mirror contacts 4.3.2 Cross-circuit detection Cross-circuit detection is a diagnostic function of a safety relay that detects short-circuits and cross-circuits between the input channels (sensor circuits) during two-channel sensing or reading.
Page 33: Signaling Circuit
Safety systems - General information 4.3 Basic terminology 4.3.4 Signaling circuit A current signaling path provides a safety-related output signal. Signaling circuits can be implemented with either NC or NO contact functionality. 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 always close.
Page 34: Automatic Start
Safety systems - General information 4.3 Basic terminology 4.3.7 Automatic start For an automatic start, the device is started without manual confirmation, but only after the input image has been checked and a positive test of the safety relay has been conducted. This function is also known as dynamic operation and is not permissible for EMERGENCY STOP devices.
Page 35: Monitored Start
Safety systems - General information 4.3 Basic terminology 4.3.9 Monitored start For a monitored start, the device is started by operating the START button, but only after the input image has been checked and a positive test of the safety relay has been conducted. Contrary to the manual start, the monitored start evaluates a signal change of the START button.
Page 36: Two-Hand Operation/Synchronism
Safety systems - General information 4.3 Basic terminology 4.3.10 Two-hand operation/synchronism Synchronous sensor operation is a special form of simultaneity of sensors. In this case, it is not sufficient for sensor contacts 1 and 2 to be switched to the closed state at different times, they must be closed within 0.5 seconds.
Page 37: Startup Testing
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) 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 38 Safety systems - General information 4.3 Basic terminology Actuator wiring up to PL c / Cat. 2 in accordance with ISO 13849-1 or SILCL 1 in accordance with IEC 62061 Figure 4-5 PL c / Cat. 2 in accordance with ISO 13849-1 or SILCL 1 in accordance with IEC 62061 Actuator wiring up to PL e / Cat.
Page 39 Safety systems - General information 4.3 Basic terminology Note In the case of 3SK1..2 (devices with solid-state outputs) 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.
Page 40: Series Connection Of Sensors
Safety systems - General information 4.3 Basic terminology 4.3.14 Series connection of sensors Series connection of EMERGENCY STOP command devices It is possible to connect EMERGENCY STOP command elements in series up to the highest safety level (SILCL 3 in accordance with IEC 62061, SIL 3 in accordance with IEC 61508 and PL e (Cat.
Page 41 Safety systems - General information 4.3 Basic terminology Series connection of position switches In general, position switches may be connected in series if measures ensure that several protective doors are not regularly opened simultaneously (otherwise a fault cannot be detected). For safety level SILCL3 in accordance with IEC 62061, SIL3 in accordance with IEC 61508, and PL e (Cat.
Page 42 Safety systems - General information 4.3 Basic terminology 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 43: 3Sk1 Devices
3SK1 devices 3SK1 standard 5.1.1 General information The safety relays of the Standard series can be configured as stand-alone devices or as an expansion solution with conventional wiring technology. The focus of the Standard series is on: ● Single devices for simple safety applications ●...
Page 44: 3Sk1111 Standard Basic Unit Instantaneous (With Relay Outputs)
3SK1 devices 5.1 3SK1 standard 5.1.3 3SK1111 Standard basic unit instantaneous (with relay outputs) 5.1.3.1 General information MLFB: 3SK1111-*AB30 24 V AC/DC 3SK1111-*AW20 110 ... 240 V AC / DC (wide-range supply) (*) 1: = screw-type terminal; 2: = push-in terminal Device features: ●...
Page 45: Design
3SK1 devices 5.1 3SK1 standard 5.1.3.3 Design ① Top cover flap ② Top cover flap; internal inscription ③ Display LEDs ④ Slide switch ⑤ Bottom cover flap ⑥ Bottom cover flap; internal inscription ⑦ DataMatrix code ⑧ Device identification label 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 46: Terminal Assignment
3SK1 devices 5.1 3SK1 standard 5.1.3.4 Terminal assignment Terminal Explanation Sensor channel 1 Sensor channel 2 Non-floating sensor evaluation INF/S Feedback circuit/START button Test output 1 (for IN1) Test output 2 (for IN2) Test output 3 (for IN3) Test output 4 (for INF/S) 13 - 14 Enabling circuits (NO, relay contact) 23 - 24...
Page 47: Outputs
3SK1 devices 5.1 3SK1 standard Voltage variant 110 V ... 240 V AC/DC: Only floating sensors can be connected to the device version 3SK1111-.AW20. Connection of the two-channel sensor takes place via T1/IN1 and T2/IN2. 5.1.3.6 Outputs The safety relay has the following outputs: ●...
Page 48 3SK1 devices 5.1 3SK1 standard State diagrams 3SK1111 3SK1111-xAB30 autostart A1/A2 INF (feedback) IN1/IN2 (sensor circuit) 200 ms 8 ms 65 ms 90 ms Enabling circuit Signaling circuit 3SK1111-xAB30 monitored start A1/A2 INF/S (feedbck) IN1/IN2 (sensor circuit) 15 ms 20 ms 8 ms 150 ms 65 ms...
Page 49 3SK1 devices 5.1 3SK1 standard 3SK1111-xAW20 autostart A1/A2 (feedbck) IN1/IN2 (sensor circuit) 110 ms 8 ms 200 ms 320 ms Enabling circuit Signaling circuit 3SK1111-xAW20 monitored start A1/A2 (feedbck) IN1/IN2 (sensor circuit) 15 ms 8 ms 150 ms 200 ms Enabling circuit Signaling...
Page 50: 3Sk1112 Standard Basic Unit Instantaneous (With Solid-State Outputs)
3SK1 devices 5.1 3SK1 standard 5.1.4 3SK1112 Standard basic unit instantaneous (with solid-state outputs) 5.1.4.1 General information MLFB: 3SK1112-*BB40 24 V DC (*) 1: = screw-type terminal; 2: = push-in terminal Device features: ● 4-way DIP switch for function setting (parameterization) ●...
Page 51: Design
3SK1 devices 5.1 3SK1 standard 5.1.4.3 Design ① Top cover flap ② Top cover flap; internal inscription ③ Display LEDs ④ DIP switch ⑤ SET/RESET button ⑥ Bottom cover flap ⑦ Bottom cover flap; internal inscription ⑧ DataMatrix code ⑨ Device identification label 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 52: Terminal Assignment
3SK1 devices 5.1 3SK1 standard 5.1.4.4 Terminal assignment Terminal Explanation Sensor channel 1 Sensor channel 2 START pushbutton circuit Feedback circuit Cascading circuit Test output 1 (for IN1) Test output 2 (for IN2, INF) Safe output 1 (switching to P potential, 24 V DC solid-state) Safe output 2 (switching to P potential, 24 V DC solid-state) Signaling circuit 1 (switching to P potential, 24 V DC solid-state) 5.1.4.5...
Page 53: Outputs
3SK1 devices 5.1 3SK1 standard 5.1.4.6 Outputs The safety relay has the following outputs: ● Q1, Q2: safety-related solid-state outputs with dynamic monitoring, switching to P potential ● QM1: non-safety-related solid-state signaling circuit, switching to P potential The safe outputs and the safety-related signaling circuit are short-circuit proof. 5.1.4.7 Display of the operating state Display of the operating state...
Page 54: Function Setting
3SK1 devices 5.1 3SK1 standard 5.1.4.8 Function setting Table 5- 1 DIP switch Switch position: left Schematic DIP switch Switch position: right Autostart Monitored start Cross-circuit detection deactivated Cross-circuit detection activated 2 x single-channel sensor connection 1 x two-channel sensor connection Start-up test ON Start-up test OFF In the delivery state, all the DIP switches are in switch position: right.
Page 55 3SK1 devices 5.1 3SK1 standard State diagrams 3SK1112 3SK1112-xBB40 Autostart A1/A2 (Feedback) IN1/IN2 (Sensor circuit) 80 ms 30 ms 0 ms Enabling circuit Signaling output 3SK1112-xBB40 monitored start A1/A2 INF (feedback) IN1/IN2 (Sensor circuit) 150 ms 20 ms 30 ms 35 ms 0 ms Enabling...
Page 56: 3Sk1 Advanced
3SK1 devices 5.2 3SK1 Advanced 3SK1 Advanced 5.2.1 General information The safety relays of the Advanced device series comprise basic devices and input and output expansions. The Advanced devices can be connected by means of a 3ZY12 device connector. When configuring the system, it must be ensured that input expansions are always mounted on the left, and output expansions (3SK121) on the right of the basic unit.
Page 57: General Device Features
3SK1 devices 5.2 3SK1 Advanced 5.2.3 General device features Device properties: ● 4-way DIP switch for function setting (parameterization) ● SET/RESET button ● 4 LEDs for status and function display ● 2 sensor inputs (channels 1 and 2) ● 1 input (cascading circuit) ●...
Page 58: Functions
3SK1 devices 5.2 3SK1 Advanced 5.2.5 Functions Table 5- 3 DIP switch Switch position: left Schematic DIP switch Switch position: right Autostart Monitored start Cross-circuit detection deactivated Cross-circuit detection activated 2 x single-channel sensor connection 1 x two-channel sensor connection Start-up test ON Start-up test OFF In the delivery state, all the DIP switches are in switch position: right.
Page 59 3SK1 devices 5.2 3SK1 Advanced Potentiometer for time setting Potentiometer for infinite time setting of the time-delayed enabling circuits on the Advanced basic units (with time-delayed enabling circuits). ● 3SK112.-.CB41 setting range: 0.05 ... 3 s ● 3SK112.-.CB42 setting range: 0.5 ... 30 s ●...
Page 60: 3Sk1121 Advanced Basic Unit Instantaneous (With Relay Outputs)
3SK1 devices 5.2 3SK1 Advanced 5.2.6 3SK1121 Advanced basic unit instantaneous (with relay outputs) 5.2.6.1 Device features MLFB: 3SK1121-xAB40 24 V DC (x) 1 = screw-type terminal; 2 = push-in terminal 5.2.6.2 Function description The 3SK1121 Advanced basic unit has three safety-related relay enabling circuits and one non-safety-related signaling circuit.
Page 61: Design
3SK1 devices 5.2 3SK1 Advanced 5.2.6.3 Design ① Top cover flap ② Top cover flap; internal inscription ③ Display LEDs ④ DIP switch ⑤ SET/RESET button ⑥ Bottom cover flap ⑦ Bottom cover flap; internal inscription ⑧ DataMatrix code ⑨ Device identification label 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 62: Terminal Assignment
3SK1 devices 5.2 3SK1 Advanced 5.2.6.4 Terminal assignment Terminal Explanation Sensor channel 1 Sensor channel 2 NO contact/NC contact evaluation START pushbutton circuit Feedback circuit Cascading circuit Test output 1 (for IN1, PAR) Test output 2 (for IN2, INF) 13 - 14 Enabling circuits (NO, relay contact) 23 - 24 33 - 34...
Page 63: 3Sk1121 Advanced Basic Unit Time-Delayed (With Relay Outputs)
3SK1 devices 5.2 3SK1 Advanced 5.2.7 3SK1121 Advanced basic unit time-delayed (with relay outputs) 5.2.7.1 Device features MLFB: 3SK1121-xCB4y 24 V DC (x) 1 = screw-type terminal; 2 = push-in terminal (y) time delay 1 = 0.05 ... 3 s; 2 = 0.5 ... 30 s; 4 = 5 ... 300 s Additional / alternative device characteristics ●...
Page 64: Design
3SK1 devices 5.2 3SK1 Advanced 5.2.7.2 Design ① Top cover flap ② Top cover flap; internal inscription ③ Display LEDs ④ Potentiometer for setting the delay time ⑤ DIP switch ⑥ SET/RESET button ⑦ Bottom cover flap ⑧ Bottom cover flap; internal inscription ⑨...
Page 65: Terminal Assignment
3SK1 devices 5.2 3SK1 Advanced 5.2.7.3 Terminal assignment Terminal Explanation Sensor channel 1 Sensor channel 2 NO contact/NC contact evaluation START pushbutton circuit Feedback circuit Cascading circuit Test output 1 (for IN1, PAR) Test output 2 (for IN2, INF) 13 - 14 Instantaneous enabling circuit 1 (NO, relay contact) 23 - 24 Instantaneous enabling circuit 2 (NO, relay contact)
Page 66 3SK1 devices 5.2 3SK1 Advanced State diagrams 3SK1121-xCB4y 3SK1121-xCB4y autostart A1/A2 (Feedback) IN1/IN2 (sensor circuit) 85 ms 35 ms 35 ms Enabling circuits Enabling circuits 3SK1121-xCB4y monitored start A1/A2 (feedbck) IN1/IN2 (sensor circuit) 150 ms 35 ms 35 ms 35 ms 35 ms Enabling circuit...
Page 67: 3Sk1122 Advanced Basic Unit Instantaneous (With Solid-State Outputs)
3SK1 devices 5.2 3SK1 Advanced 5.2.8 3SK1122 Advanced basic unit instantaneous (with solid-state outputs) 5.2.8.1 Device features MLFB: 3SK1122-xAB40 24 V DC (x) 1 = screw-type terminal; 2 = push-in terminal Additional or alternative device features ● 3 safety-related solid-state outputs ●...
Page 68: Design
3SK1 devices 5.2 3SK1 Advanced 5.2.8.2 Design ① Top cover flap ② Top cover flap; internal inscription ③ Display LEDs ④ DIP switch ⑤ SET/RESET button ⑥ Bottom cover flap ⑦ Bottom cover flap; internal inscription ⑧ DataMatrix code ⑨ Device identification label 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 69: Terminal Assignment
3SK1 devices 5.2 3SK1 Advanced 5.2.8.3 Terminal assignment Terminal Explanation Sensor channel 1 Sensor channel 2 NO contact/NC contact evaluation START pushbutton circuit Feedback circuit Cascading circuit Test output 1 (for IN1, PAR) Test output 2 (for IN2, INF) Safety-related output 1 (switching to P potential, 24 V DC solid-state) Safety-related output 2 (switching to P potential, 24 V DC solid-state) Safety-related output 3 (switching to P potential, 24 V DC solid-state) Signaling circuit 1 (switching to P potential, 24 V DC solid-state)
Page 70 3SK1 devices 5.2 3SK1 Advanced State diagrams 3SK1122-xAB40 3SK1122-xAB40 Autostart A1/A2 INF (feedback) IN1/IN2 (sensor circuit) 80 ms 30 ms 0 ms Enabling circuits Signaling output 3SK1122-xAB40 monitored start A1/A2 INF (feedback) IN1/IN2 (sensor circuit) 150 ms 0 ms 30 ms 35 ms 20 ms Enabling...
Page 71: 3Sk1122 Advanced Basic Unit Time-Delayed (With Solid-State Outputs)
3SK1 devices 5.2 3SK1 Advanced 5.2.9 3SK1122 Advanced basic unit time-delayed (with solid-state outputs) 5.2.9.1 Device features MLFB: 3SK1122-xCB4y 24 V DC (x) 1 = screw-type terminal; 2 = push-in terminal (y) time delay 1 = 0.05 ... 3 s; 2 = 0.5 ... 30 s; 4 = 5 ... 300 s Additional / alternative device characteristics ●...
Page 72: Design
3SK1 devices 5.2 3SK1 Advanced 5.2.9.2 Design ① Top cover flap ② Top cover flap; internal inscription ③ Display LEDs ④ Potentiometer for setting the delay time ⑤ DIP switch ⑥ SET/RESET button ⑦ Bottom cover flap ⑧ Bottom cover flap; internal inscription ⑨...
Page 73: Terminal Assignment
3SK1 devices 5.2 3SK1 Advanced 5.2.9.3 Terminal assignment Terminal Explanation Sensor channel 1 Sensor channel 2 NO contact/NC contact evaluation START pushbutton circuit Feedback circuit Cascading circuit / normal switching duty Test output 1 (for IN1, PAR) Test output 2 (for IN2, INF) Instantaneous safety-related output 1 (switching to P potential, 24 V DC solid- state) Instantaneous safety-related output 2 (switching to P potential, 24 V DC solid-...
Page 74 3SK1 devices 5.2 3SK1 Advanced State diagrams 3SK1122-xCB4y 3SK1122-xCB4y autostart A1/A2 INF (feedback) IN1/IN2 (sensor circuit) 80 ms 150 ms 0 ms Enabling circuits Enabling circuits 3SK1122-xCB4y monitored start A1/A2 INF (feedback) IN1/IN2 (sensor circuit) 150 ms 80 ms 30 ms 35 ms 0 ms Enabling...
Page 75: 3Sk1120 Advanced Basic Unit Instantaneous (With Solid-State Outputs)
3SK1 devices 5.2 3SK1 Advanced 5.2.10 3SK1120 Advanced basic unit instantaneous (with solid-state outputs) 5.2.10.1 Device features MLFB: 3SK1120-xAB40 24 V DC (x) 1 = screw-type terminal; 2 = push-in terminal Additional or alternative device features ● 1 safety-related solid-state output ●...
Page 76: Design
3SK1 devices 5.2 3SK1 Advanced 5.2.10.2 Design ① Top cover flap ② Top cover flap; internal inscription ③ Display LEDs ④ DIP switch ⑤ SET/RESET button ⑥ Bottom cover flap ⑦ Bottom cover flap; internal inscription ⑧ DataMatrix code ⑨ Device identification label 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 77: Terminal Assignment
3SK1 devices 5.2 3SK1 Advanced 5.2.10.3 Terminal assignment Terminal Explanation Sensor channel 1 Sensor channel 2 NO contact/NC contact evaluation START pushbutton circuit Feedback circuit Cascading circuit Test output 1 (for IN1, PAR) Test output 2 (for IN2, INF) Safety-related output 1 (switching to P potential, 24 V DC solid-state) 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 78: 3Sk1 Output Expansions
3SK1 devices 5.3 3SK1 output expansions 3SK1 output expansions 5.3.1 Applications The 3SK1 output expansions are used to expand the enabling circuits. The maximum achievable Performance Level PL / Cat. in accordance with ISO 13849-1, SILCL in accordance with IEC 62061, SIL in accordance with IEC 61508 corresponds to the Performance Level PL and SIL of the basic unit when the external wiring (connection between basic unit and output expansion) is configured as fail-safe (e.g.
Page 79: Display Of The Operating State
3SK1 devices 5.3 3SK1 output expansions 5.3.3 Display of the operating state 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 Control supply voltage Enabling circuits Open Green...
Page 80: Output Expansion 3Sk1211
3SK1 devices 5.3 3SK1 output expansions 5.3.5 Output expansion 3SK1211 5.3.5.1 Device features MLFB: 3SK1211-xBB00 24 V AC 3SK1211-xBB40 24 V DC 3SK1211-xBW20 110 ... 240 V AC / DC (wide-range supply) (x) 1 = screw-type terminal; 2 = push-in terminal Supply: 24 V AC: ●...
Page 81: Design Of 3Sk1211-.B..0
3SK1 devices 5.3 3SK1 output expansions 5.3.5.2 Design of 3SK1211-.B..0 ① 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 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 82: Design Of 3Sk1211-.Bb40
3SK1 devices 5.3 3SK1 output expansions 5.3.5.3 Design of 3SK1211-.BB40 ① Top cover flap ② Top cover flap; internal inscription ③ Display LEDs ④ Slide switch ⑤ Bottom cover flap ⑥ Bottom cover flap; internal inscription ⑦ DataMatrix code ⑧ Device identification label 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 83: Terminal Assignment
3SK1 devices 5.3 3SK1 output expansions 5.3.5.4 Terminal assignment Terminal Explanation + (L+ for 3SK1211-.BW20) - (N- for 3SK1211-.BW20) 13 - 14 Enabling circuit 1 (NO, relay contact) 23 - 24 Enabling circuit 2 (NO, relay contact) 33 - 34 Enabling circuit 3 (NO, relay contact) 43 - 44 Enabling circuit 4 (NO, relay contact)
Page 84: Output Expansion 3Sk1213
3SK1 devices 5.3 3SK1 output expansions 5.3.6 Output expansion 3SK1213 5.3.6.1 Device features MLFB: 3SK1213-xAB40 24 V DC 3SK1213-xAJ20 115 V AC 3SK1213-xAL20 230 V AC (x) 1 = screw-type terminal; 2 = spring-loaded terminal Supply: 24 V DC: ● An SELV / PELV power supply must be used for the infeed 115 V AC and 230 V AC ●...
Page 85: Design Of 3Sk1213-.Ab40
3SK1 devices 5.3 3SK1 output expansions 5.3.6.2 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 terminals 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 86: Design Of 3Sk1213-.A.20
3SK1 devices 5.3 3SK1 output expansions 5.3.6.3 Design of 3SK1213-.A.20 ① Top cover flap ② Display LEDs ③ DataMatrix code ④ Bottom cover flap ⑤ Device identification label ⑥ Screw-type terminals ⑦ Spring-loaded terminals 5.3.6.4 Terminal assignment Terminal Description 13 - 14 Enabling circuit 1 (NO, relay contact) 23 - 24 Enabling circuit 2 (NO, relay contact)
Page 87: 3Sk1 Input Expansions
3SK1 devices 5.4 3SK1 input expansions 3SK1 input expansions 5.4.1 Input expansion 3SK1220 5.4.1.1 Device features MLFB: 3SK1220-xAB40 24 V DC (x) 1 = screw-type terminal; 2 = push-in terminal Device properties: ● 4-way DIP switch for function setting (parameterization) ●...
Page 88: Design
3SK1 devices 5.4 3SK1 input expansions 5.4.1.3 Design ① Top cover flap ② Top cover flap; internal inscription ③ Display LEDs ④ DIP switch ⑤ SET/RESET button ⑥ Bottom cover flap ⑦ Bottom cover flap; internal inscription ⑧ DataMatrix code ⑨...
Page 89: Display Of The Operating State
3SK1 devices 5.4 3SK1 input expansions 5.4.1.5 Display of the operating state Display of the operating state You can find additional information on this under "Advanced" in the Chapter Function description (Page 57). 5.4.1.6 Function setting DIP switch settings You can find additional information on this under "Advanced" in the Chapter Functions (Page 58).
Page 90 3SK1 devices 5.4 3SK1 input expansions State diagrams 3SK1220 3SK1220 Autostart IN1/IN2 (sensor circuit) 80 ms 30 ms 0 ms Signal to Basic device 3SK1220 monitored start IN1/IN2 (sensor circuit) 150 ms 20 ms 30 ms 35 ms 0 ms Signal to Basic device 3SK1 safety relays...
Page 91: Power Supply 3Sk1230
3SK1 devices 5.4 3SK1 input expansions 5.4.2 Power supply 3SK1230 5.4.2.1 Device features MLFB: 3SK1230-xAW20 110 ... 240 V AC/DC (x) 1 = screw-type terminal; 2 = push-in terminal Device properties: ● Wide-range input: 110 ... 240 V AC/DC ● Rated output voltage: 24 V DC ●...
Page 92: Design
3SK1 devices 5.4 3SK1 input expansions 5.4.2.3 Design ① 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 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 93: Terminal Assignment
3SK1 devices 5.4 3SK1 input expansions 5.4.2.4 Terminal assignment Terminal Explanation +24 V DC +24 V DC - Mass - Mass 5.4.2.5 Display of the operating state Display of the operating state The operating state and functioning of the device are indicated by an LED: ●...
Page 94 3SK1 devices 5.4 3SK1 input expansions 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 95: System Configuration
System configuration General information 6.1.1 General notes on the Standard system ● Expanding enabling circuits using external wiring. ● Output expansions must be activated via a safe enabling circuit/output of the basic unit. ● The NC circuit (51/52 for 3SK1211; 41/42 for 3SK1213) of the output expansion must be looped into the feedback circuit (T2/INF) of the basic unit.
Page 96: Maximum System Configuration
System configuration 6.1 General information 6.1.3 Maximum system configuration Changes to the system configuration Changes to the system configuration in safety mode always result in a device error. Restarting, by disconnecting and reconnecting the operating voltage (Power OFF/ON), is a mandatory requirement.
Page 97 System configuration 6.1 General information Maximum system configuration when supplying with 24 V DC using the 3SK1230 power supply When using the 3SK1230 power supply, the maximum system configuration can be calculated as follows: Up to 10 "system units" can be connected to a 3SK1230 power supply. Individual devices occupy a different number of system units.
Page 98: 3Zy12 Device Connector
System configuration 6.2 3ZY12 device connector 3ZY12 device connector 6.2.1 Device features MLFB: MLFB Type of device connector 3ZY1212-1BA00 Device connector, type 1, 17.5 mm 3ZY1212-2BA00 Device connector, type 1, 22.5 mm 3ZY1212-2DA00 Device termination connector, type 1, 22.5 mm 3ZY1212-2EA00 Device connector, type 2, 22.5 mm 3ZY1212-2FA00...
Page 99 System configuration 6.2 3ZY12 device connector The following device connectors are required for the various enclosure widths of the Advanced device series: Devices Device connector, type 1, Device connector, type 1, Device termination 17.5 mm 22.5 mm connector, type 1, 22.5 mm 3ZY1212-1BA00 3ZY1212-2BA00 3ZY1212-2DA00...
Page 100: Applications
System configuration 6.3 System configuration rules 6.2.2 Applications The Advanced basic unit can be expanded on the input and output side using device connectors (connecting plugs) without any additional wiring outlay. When configuring the system, it is important to ensure that input expansions are connected on the left and output expansions on the right of a basic unit.
Page 101 System configuration 6.3 System configuration rules ● If an output expansion is not detected on powering up, the internal feedback circuit will not be evaluated. ● In the case of a change to the device configuration during operation, error mode is activated immediately.
Page 102 System configuration 6.3 System configuration rules 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 103: Circuit Diagrams
Circuit diagrams Internal circuit diagrams 7.1.1 Internal circuit diagrams for 3SK1 Standard basic units Basic unit 3SK1111-.AB30 Standard relay instantaneous (24 V) 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 104 Circuit diagrams 7.1 Internal circuit diagrams Basic unit 3SK1111-.AW20 Standard relay instantaneous (110 - 240 V) Basic unit 3SK1112-.BB40 Standard solid-state 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 105: Internal Circuit Diagrams For 3Sk1 Advanced Basic Units
Circuit diagrams 7.1 Internal circuit diagrams 7.1.2 Internal circuit diagrams for 3SK1 Advanced basic units Basic unit 3SK1121-.AB40 Advanced relay instantaneous Basic unit 3SK1121-.CB4. Advanced relay time-delayed 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 106 Circuit diagrams 7.1 Internal circuit diagrams Basic unit 3SK1122-.AB40 Advanced solid-state instantaneous Basic unit 3SK1122-.CB4. Advanced solid-state time-delayed 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 107 Circuit diagrams 7.1 Internal circuit diagrams Basic unit 3SK1120-.AB40 Advanced 17.5 mm solid-state instantaneous 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 108: Internal Circuit Diagrams For Expansion Units
Circuit diagrams 7.1 Internal circuit diagrams 7.1.3 Internal circuit diagrams for expansion units Output expansion 3SK1211 (110 - 240 V) Output expansion 3SK1211 (24 V DC) 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 109 Circuit diagrams 7.1 Internal circuit diagrams Output expansion 3SK1213 Input expansion 3SK1220 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 110 Circuit diagrams 7.1 Internal circuit diagrams Power supply 3SK1230 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 111: Typical Circuits
Circuit diagrams 7.2 Typical circuits Typical circuits 7.2.1 Sensor wiring Parameter definitions depending on the sensor wiring Slide switch Typical circuit Description AUTO MONITORED Basic unit 3SK1 Standard relay EMERGENCY STOP, single-channel, with 1 and 2 monitored start EMERGENCY STOP, single-channel, with 3 and 4 autostart Two-channel, with cross-circuit detection,...
Page 112 Circuit diagrams 7.2 Typical circuits DIP switch Typical circuit Description Basic units 3SK1 Advanced right right right — 1NC/1NO sensor, with cross-circuit detection, with monitored start left right right — 1NC/1NO sensor, with cross-circuit detection, with autostart left right right —...
Page 113: Typical Circuits
Circuit diagrams 7.2 Typical circuits 7.2.2 Typical circuits The black fields show the positions of the switches. Here, "Autostart" in each case. Typical circuits for basic unit 3SK1111 Standard relay Table 7- 1 Typical circuit 1: Single-channel, with monitored start Monitored start •...
Page 114 Circuit diagrams 7.2 Typical circuits Table 7- 2 Typical circuit 2: Single-channel, with monitored start Monitored start • 3SK1111 Standard relay • Sensor: 1 NC contact • Slide switch Auto Monitored — bottom Up to PL in accordance with ISO 13849-1 Up to Safety Integrity Level (SILCL) to IEC 62061...
Page 115 Circuit diagrams 7.2 Typical circuits Table 7- 4 Typical circuit 4: single-channel, with autostart Autostart • 3SK1111 Standard relay • Sensor: 1 NC contact • Slide switch Auto Monitored — Up to PL in accordance with ISO 13849-1 Up to Safety Integrity Level (SILCL) to IEC 62061 Table 7- 5 Typical circuit 5:...
Page 116 Circuit diagrams 7.2 Typical circuits Table 7- 6 Typical circuit 6: Two-channel, with cross-circuit detection, with autostart Autostart • With cross-circuit detection • Sensor: 2 NC contacts • 3SK1111 Standard relay • Slide switch Auto Monitored — Up to PL in accordance with ISO 13849-1 Up to Safety Integrity Level (SILCL) to IEC 62061...
Page 117 Circuit diagrams 7.2 Typical circuits Table 7- 7 Typical circuit 7: Sensors with solid-state outputs, without cross-circuit detection, with autostart Autostart • Without cross-circuit detection • Sensor: 2-channel non-floating • 3SK1111 Standard relay • Slide switch Auto Monitored — Up to PL in accordance with ISO 13849-1 Up to Safety Integrity Level (SILCL) to IEC 62061...
Page 118 Circuit diagrams 7.2 Typical circuits Table 7- 9 Typical circuit 9: Two-channel, with cross-circuit detection, with autostart Autostart • With cross-circuit detection • 1 x two-channel • Sensor: 2 NC contacts • 3SK1112 Standard solid-state and • 3SK112 / 3SK122 Advanced DIP switch —...
Page 119 Circuit diagrams 7.2 Typical circuits Table 7- 11 Typical circuit 11: Electronic sensor, two-channel, without cross-circuit detection, with autostart Autostart • Without cross-circuit detection • 1 x two-channel • Sensor: 2-channel non-floating • 3SK1112 Standard solid-state and • 3SK112 Advanced DIP switch —...
Page 120 Circuit diagrams 7.2 Typical circuits Table 7- 12 Typical circuit 12: 2 x single-channel, without cross-circuit detection, with monitored start Monitored start • Without cross-circuit detection • 2 x single-channel • Sensor: two single-channel NC sensors • 3SK1112 Standard solid-state and •...
Page 121 Circuit diagrams 7.2 Typical circuits Typical circuits for 3SK1 Advanced basic units only Table 7- 14 Typical circuit 14: 1NC/1NO sensor, with cross-circuit detection, with monitored start Monitored start • With cross-circuit detection • 1 x two-channel • Jumper T1/PAR for NC/NO evaluation •...
Page 122 Circuit diagrams 7.2 Typical circuits Table 7- 16 Typical circuit 16: Two-hand operation, with cross-circuit detection, with autostart Autostart • With cross-circuit detection • 2 x single-channel • Jumper T1/PAR for NC/NO evaluation • Sensor: Two-hand NO/NO sensor • 3SK112 Advanced •...
Page 123: Mounting
Mounting Warning notices Warning notices before installation, wiring, and commissioning WARNING Hazardous voltage! Can cause electric shock and burns. Turn off and lock out all power supplying this device before working on this device. 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 124: Terminal Coding
Mounting 8.2 Terminal coding Terminal coding You can provide the terminals with coding pins (3ZY1440-1AA00). This helps you to avoid errors when replacing the terminals. Figure 8-1 Module with coding pins Figure 8-2 Stud position rotated by 60° in each case 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 125: Mounting The Devices On A Level Surface
Mounting 8.3 Mounting the devices on a level surface Mounting the devices on a level surface Requirements Please note the following requirements for mounting on a level surface: ● Please observe the information about the mounting position in the chapter "General technical data (Page 193)".
Page 126 Mounting 8.3 Mounting the devices on a level surface Procedure Step Instructions Figure Insert the securing brackets into the openings provided on the device until they engage. Hold the device up to the surface prepared for screw fastening. Insert the screws through the oblong holes in the securing brackets.
Page 127: Disassembling Devices From A Level Surface
Mounting 8.4 Disassembling devices from a level surface Disassembling devices from a level surface WARNING Hazardous Voltage Can Cause Death, Serious Injury, or Property Damage. Before starting work, therefore, disconnect the system and devices from the power supply. Requirements ● The terminals have been removed or disconnected. 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 128 Mounting 8.4 Disassembling devices from a level surface Procedure Step Instructions Figure Hold the device firmly. Unscrew the cap screws. Lift the device from the level surface. Remove the securing brackets from the device. Disassembling 17.5 mm and 22.5 mm devices Disassembling 90 mm devices 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 129: Mounting The 22.5 Mm/17.5 Mm Device On A Standard Mounting Rail
Mounting 8.5 Mounting the 22.5 mm/17.5 mm device on a standard mounting rail Mounting the 22.5 mm/17.5 mm device on a standard mounting rail Requirements ● A horizontal 35-mm wide mounting rail in accordance with DIN EN 60715 has been properly secured at the installation location.
Page 130: Mounting The 90 Mm Devices On A Standard Mounting Rail
Mounting 8.6 Mounting the 90 mm devices on a standard mounting rail Mounting the 90 mm devices on a standard mounting rail Requirements ● A horizontal 35-mm wide mounting rail in accordance with DIN EN 60715 has been properly secured at the installation location. ●...
Page 131: Removing Devices From A Standard Mounting Rail
Mounting 8.7 Removing devices from a standard mounting rail Removing devices from a standard mounting rail WARNING Hazardous Voltage Can Cause Death, Serious Injury, or Property Damage. Before starting work, therefore, disconnect the system and devices from the power supply. Requirements ●...
Page 132: Mounting 22.5 Mm/17.5 Mm Devices With Device Connectors On A Standard Mounting Rail
Mounting 8.8 Mounting 22.5 mm/17.5 mm devices with device connectors on a standard mounting rail Mounting 22.5 mm/17.5 mm devices with device connectors on a standard mounting rail Requirements ● A horizontal 35-mm wide mounting rail in accordance with DIN EN 60715 has been properly secured at the installation location.
Page 133 Mounting 8.8 Mounting 22.5 mm/17.5 mm devices with device connectors on a standard mounting rail Step Instructions Figure Push the device connectors together until they engage. Mount the cover on the left of the first device connector. The click click cover is included in the scope of supply of the device terminator.
Page 134 Mounting 8.8 Mounting 22.5 mm/17.5 mm devices with device connectors on a standard mounting rail Step Instructions Figure Mount the device on the device connector Mount all the devices required click for the system configuration in accordance with the respective installation guidelines on the device connectors click...
Page 135: Removing 22.5 Mm/17.5 Mm Devices With Device Connectors From A Standard Mounting Rail
Mounting 8.9 Removing 22.5 mm/17.5 mm devices with device connectors from a standard mounting rail Removing 22.5 mm/17.5 mm devices with device connectors from a standard mounting rail WARNING Hazardous Voltage Can Cause Death, Serious Injury, or Property Damage. Before starting work, therefore, disconnect the system and devices from the power supply. Requirements ●...
Page 136 Mounting 8.9 Removing 22.5 mm/17.5 mm devices with device connectors from a standard mounting rail Procedure The figures show 22.5 mm devices. The 17.5 mm devices are removed correspondingly. Step Instructions Figure Unlock the device using a screwdriver. Pull the lower half of the device away from the device connector.
Page 137 Mounting 8.9 Removing 22.5 mm/17.5 mm devices with device connectors from a standard mounting rail Step Instructions Figure Separate the device connectors using a screwdriver Remove the cover Step Instructions Figure Press the device connector downwards Pull the lower half of the device connector away from the standard mounting rail Lift the device connector from...
Page 138: Mounting 90 Mm Devices With Device Connectors On A Standard Mounting Rail
Mounting 8.10 Mounting 90 mm devices with device connectors on a standard mounting rail 8.10 Mounting 90 mm devices with device connectors on a standard mounting rail Requirements ● A horizontal 35-mm wide mounting rail in accordance with DIN EN 60715 has been properly secured at the installation location.
Page 139 Mounting 8.10 Mounting 90 mm devices with device connectors on a standard mounting rail Step Instructions Figure Push the device connectors together until they engage. Mount the cover on the left of the first device connector click click piece and the device connectors supplied in the set for enclosures of 45 mm upwards (right-hand side)
Page 140 Mounting 8.10 Mounting 90 mm devices with device connectors on a standard mounting rail Step Instructions Figure Mount output expansion 3SK1213 on the device connectors click Mount all the devices required click for the system configuration in accordance with the respective installation guidelines on the device connectors...
Page 141: Removing 90 Mm Devices With Device Connectors From A Standard Mounting Rail
Mounting 8.11 Removing 90 mm devices with device connectors from a standard mounting rail 8.11 Removing 90 mm devices with device connectors from a standard mounting rail WARNING Hazardous Voltage Can Cause Death, Serious Injury, or Property Damage. Before starting work, therefore, disconnect the system and devices from the power supply. Requirements ●...
Page 142 Mounting 8.11 Removing 90 mm devices with device connectors from a standard mounting rail Procedure Step Instructions Figure Unlock the device using a screwdriver Pull the lower half of the device away from the device connector. Unlock the device using a screwdriver Pull the device away from the device connector...
Page 143 Mounting 8.11 Removing 90 mm devices with device connectors from a standard mounting rail Step Instructions Figure Separate the device connectors using a screwdriver Remove the termination piece. Step Instructions Figure Press the device connector downwards Pull the lower half of the device connector away from the standard mounting rail Lift the device connector from...
Page 144: Mounting 22.5 Mm/17.5 Mm Devices With Device Connectors On The Wall
Mounting 8.12 Mounting 22.5 mm/17.5 mm devices with device connectors on the wall 8.12 Mounting 22.5 mm/17.5 mm devices with device connectors on the wall Requirements Please note the following requirements for mounting on a level surface: ● Please observe the information about the mounting position in the chapter "General technical data (Page 193)".
Page 145 Mounting 8.12 Mounting 22.5 mm/17.5 mm devices with device connectors on the wall Procedure for mounting on a level surface The figures show 22.5 mm devices. The 17.5 mm devices are mounted correspondingly. Step Instructions Figure Push the device connectors together until they engage Mount the cover on the left of the first device connector.
Page 146 Mounting 8.12 Mounting 22.5 mm/17.5 mm devices with device connectors on the wall Step Instructions Figure Hold the device connector on the level surface prepared for screw fastening. Insert each screw through the relevant holes in the device connectors. Screw the device connector to the level surface so that it is secure.
Page 147 Mounting 8.12 Mounting 22.5 mm/17.5 mm devices with device connectors on the wall Step Instructions Figure Mount the device on the device connector Mount all the devices required click for the system configuration in accordance with the respective installation guidelines on the device connectors click 3SK1 safety relays...
Page 148: Removing 22.5 Mm/17.5 Mm Devices With Device Connectors From The Wall
Mounting 8.13 Removing 22.5 mm/17.5 mm devices with device connectors from the wall 8.13 Removing 22.5 mm/17.5 mm devices with device connectors from the wall WARNING Hazardous Voltage Can Cause Death, Serious Injury, or Property Damage. Before starting work, therefore, disconnect the system and devices from the power supply. Requirements ●...
Page 149 Mounting 8.13 Removing 22.5 mm/17.5 mm devices with device connectors from the wall Procedure The figures show 22.5 mm devices. The 17.5 mm devices are removed correspondingly. Step Instructions Figure Unlock the device (below) using a screwdriver Pull the lower half of the device away from the device connector Unlock the device (above)
Page 150 Mounting 8.13 Removing 22.5 mm/17.5 mm devices with device connectors from the wall Step Instructions Figure Release the screws Separate the device connectors using a screwdriver Remove the cover 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 151: Mounting 90 Mm Devices With Device Connectors On The Wall
Mounting 8.14 Mounting 90 mm devices with device connectors on the wall 8.14 Mounting 90 mm devices with device connectors on the wall Requirements Please note the following requirements for mounting on a level surface: ● Please observe the information about the mounting position in the chapter "General technical data (Page 193)".
Page 152 Mounting 8.14 Mounting 90 mm devices with device connectors on the wall Procedure Step Instructions Figure Push the device connectors together until they engage Mount the cover on the left of the first device connector click click Note the clearances required for the 90 mm devices Mount the device connector supplied in the set for...
Page 153 Mounting 8.14 Mounting 90 mm devices with device connectors on the wall Step Instructions Figure Hold the device connector on the level surface prepared for screw fastening. Insert each screw through the relevant holes in the device connectors. Screw the device connector to the level surface so that it is secure.
Page 154 Mounting 8.14 Mounting 90 mm devices with device connectors on the wall Step Instructions Figure Mount output expansion 3SK1213 on the device connectors click click click click Mount all the devices required for the system configuration in accordance with the respective installation guidelines on the device connectors...
Page 155: Removing 90 Mm Devices With Device Connectors From Wall
Mounting 8.15 Removing 90 mm devices with device connectors from wall 8.15 Removing 90 mm devices with device connectors from wall WARNING Hazardous Voltage Can Cause Death, Serious Injury, or Property Damage. Before starting work, therefore, disconnect the system and devices from the power supply. Requirements ●...
Page 156 Mounting 8.15 Removing 90 mm devices with device connectors from wall Procedure Step Instructions Figure Unlock the device (bottom) using a screwdriver Pull the lower half of the device away from the device connector Unlock the device (top) using a screwdriver Pull the device away from the device connector 3SK1 safety relays...
Page 157 Mounting 8.15 Removing 90 mm devices with device connectors from wall Step Instructions Figure Release the screws Separate the device connectors Remove the cover 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 158: 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 rotary switches) against unintentional readjustment.
Page 159: Connection
Connection 22.5 mm/17.5 mm devices 9.1.1 Terminal assignment Location of the connections 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. Figure 9-1 Upper terminal cover 3SK1 safety relays...
Page 160 Connection 9.1 22.5 mm/17.5 mm devices Figure 9-2 Lower terminal cover 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 161: Connection Data For Terminals
Connection 9.1 22.5 mm/17.5 mm devices 9.1.2 Connection data for terminals Specification and value Specification and value in the case of removable terminals with in the case of removable terminals with screw-type terminals Push-In terminals Screwdriver Cross-tip screwdriver Screwdriver (3RA2908-1A) Size: PZ 1x80 (⌀...
Page 162: Connecting The Screw-Type Terminals
Connection 9.1 22.5 mm/17.5 mm devices 9.1.3 Connecting the screw-type 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. Requirements ● Cross-tip screwdriver size PZ 1 x 80. ●...
Page 163: Disconnecting The Screw-Type Terminals
Connection 9.1 22.5 mm/17.5 mm devices 9.1.4 Disconnecting the screw-type 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. Requirements ● Cross-tip screwdriver size PZ 1 x 80 Procedure Step Instructions...
Page 164: Connecting The Push-In Terminals
Connection 9.1 22.5 mm/17.5 mm devices 9.1.5 Connecting the push-in 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. Push-in connections are a form of spring-loaded terminals allowing wiring without tools for rigid conductors or conductors equipped with end sleeves.
Page 165 Connection 9.1 22.5 mm/17.5 mm devices Table 9- 2 Finely-stranded conductors Step Instructions Figure Insert the screwdriver in the rectangular opening to open the terminal (oval opening). Insert the cable as far as it will go into the oval opening and remove the screwdriver. Pull on the cable to ensure it is tight.
Page 166: Disconnecting The Push-In Terminals
Connection 9.1 22.5 mm/17.5 mm devices 9.1.6 Disconnecting the push-in 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. Requirements ● Screwdriver DIN 5264 of the size 0.5 x 3 mm Procedure Step Instructions...
Page 167: Attaching The Terminals
Connection 9.1 22.5 mm/17.5 mm devices 9.1.7 Attaching the 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. Requirements You must have removed the terminal blocks, for the purpose of replacing a device, for example.
Page 168: Disconnecting
Connection 9.1 22.5 mm/17.5 mm devices 9.1.8 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. Removing terminal blocks from the device Step Instructions Figure Press the clip of the terminal block upwards.
Page 169 Connection 9.1 22.5 mm/17.5 mm devices Screw terminals: Disconnecting the conductor Step Instructions Figure Unscrew the screw of the screw-type terminal. Remove the cable from the unscrewed screw- type terminal. Push-in terminals: Disconnecting the conductor Step Instructions Figure Insert the flat-head screwdriver into the square opening of the push-in terminal until it engages.
Page 170: Devices 90 Mm
Connection 9.2 Devices 90 mm Devices 90 mm 9.2.1 Opening the terminal cover WARNING Hazardous Voltage Can Cause Death, Serious Injury, or Property Damage. Before starting work, therefore, disconnect the system and devices from the power supply. Positions of the terminals and opening the terminal cover Ther removable terminals are located under the lower terminal cover.
Page 171: Connection Data For Terminals
Connection 9.2 Devices 90 mm 9.2.2 Connection data for terminals Screwdriver Screwdriver for removable terminals with for removable terminals screw-type terminals with spring-loaded terminals Screwdriver Cross-tip screwdriver Screwdriver Size: PZ 1 (⌀ 4 mm) Size: 0 or 1 (width to Torque: 0.8 to 1.2 Nm 3 mm) for raising the terminal springs...
Page 172: Connecting Terminals
Connection 9.2 Devices 90 mm 9.2.3 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. Procedure for screw-type terminal blocks Step Instructions Figure Insert the relevant cable into square on the screw-type terminal until it engages.
Page 173 Connection 9.2 Devices 90 mm Procedure for spring-loaded terminal blocks Step Instructions Figure To release the clamping springs, insert the flat- head screwdriver as far as it will go into the square opening of the spring-loaded terminal. Please observe a 10° horizontal angular deviation of the screwdriver to the oval opening.
Page 174: Mounting Terminals
Connection 9.2 Devices 90 mm 9.2.4 Mounting 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. Requirements You must have removed the terminal blocks, for the purpose of replacing a device, for example.
Page 175: Disconnecting
Connection 9.2 Devices 90 mm 9.2.5 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. Removing terminals from the device Step Instructions Figure Insert a flat-head screwdriver between the clip of the terminals and the front panel.
Page 176 Connection 9.2 Devices 90 mm Disconnecting screw-type terminals Step Instructions Figure Insert the screwdriver into the screw-type terminal. Unscrew the screw of the screw-type terminal. Remove the cable from the unscrewed screw- type terminal. Disconnecting spring-loaded terminals Step Instructions Figure Insert the flat-head screwdriver into the rectangular opening of the spring-loaded terminal until it engages.
Page 177: Device Replacement
Connection 9.3 Device replacement Device replacement WARNING Hazardous Voltage Can Cause Death, Serious Injury, or Property Damage. Before starting work, therefore, disconnect the system and devices from the power supply. When replacing a device, you do not need to re-wire it. The terminal blocks can be disconnected from the defective device and then connected to the new device.
Page 178 Connection 9.3 Device replacement 3. Mount the new device – Chapter "Mounting the devices on a level surface (Page 125)" – Chapter "Mounting the 22.5 mm/17.5 mm device on a standard mounting rail (Page 129)" – Chapter "Mounting the 90 mm devices on a standard mounting rail (Page 130)" –...
Page 179: Configuration / Operation
Configuration / operation 10.1 Procedure for configuration General information: ● It is only possible to change the configuration (DIP switch, NC/NO evaluation, potentiometer, input and output expansion) in configuration mode. Modifications during operation are not accepted. ● A configuration change (DIP switch, NC/NO evaluation, potentiometer) is indicated in safety mode by the "DEVICE"...
Page 180: Explanation Of The Device's Functions
Configuration / operation 10.2 Explanation of the device's functions 10.2 Explanation of the device's functions Explanation of the device's functions (DIP switches) Parameter Function switch Start type Autostart: The enabling circuits are switched to the active position as soon as the •...
Page 181 Configuration / operation 10.2 Explanation of the device's functions Function of the cascading input (terminal INK) 1. Safe combination of safety relays In this application, a higher-level safety relay switches off the 3SK1 safety relay via the cascading input via a safe output. Example: an EMERGENCY STOP circuit is to deactivate the entire installation as a higher-level circuit.
Page 182 Configuration / operation 10.2 Explanation of the device's functions When using a 3SK1 safety relay with instantaneous and time-delayed contacts, the two following safety notes must always be observed: NOTICE In the event of external faults such as: • Cross-circuit fault •...
Page 183: Modes
Configuration / operation 10.3 Modes 10.3 Modes The 3SK1 safety relays have four main operating modes: ● Power-up ● Configuration mode ● Safety mode ● Error mode Power-up On powering up (up to 7 seconds), the 3SK1 safety relay runs through a complete function test.
Page 184: Response Times
Configuration / operation 10.4 Response times Safety mode (DEVICE LED: green) In safety mode, all monitoring functions are active in accordance with the set configuration. Note Parameterized startup testing is indicated by a green flashing "DEVICE" LED. Only when this has been successfully executed does the "DEVICE" LED show a green light. Error mode Error mode is indicated by a red "DEVICE"...
Page 185: Commissioning
Commissioning Note Since commissioning of the 3SK1 safety relays is an important, safety-related step, it must be carried out by qualified personnel. WARNING Hazardous Voltage Can Cause Death, Serious Injury, or Property Damage. Carry out function test of the plant. To ensure the safety of the system, a full functional test of the system must be conducted after commissioning, and a successful result obtained.
Page 186 Commissioning 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 187: Display And Diagnostics
Display and diagnostics 12.1 LED display The LED indications of the Advanced safety relays are shown in the tables below. You can find the LED indications of the Standard safety relays in the chapter "Display of the operating state (Page 47)". Display Explanation (1) DEVICE...
Page 188 Display and diagnostics 12.1 LED display Display Explanation (3) IN OFF* Start conditions not fulfilled Configuration mode DIP (3) position: left Green Start conditions fulfilled Power-up: hardware test Green flashing For 1x2-channel: Simultaneity of sensors not fulfilled • For two-hand operation: time monitoring violated •...
Page 189: Power-Up
Display and diagnostics 12.2 Power-up 12.2 Power-up Display mode during power-up / parameterization in configuration mode Display Explanation (1) DEVICE Yellow or yellow flashing Monitored start Autostart (2) OUT Yellow or yellow flashing Cross-circuit detection ON Cross-circuit detection off (3) IN Yellow or yellow flashing 1 x two-channel Flickering yellow...
Page 190 Display and diagnostics 12.4 Diagnostics Configuration Explanation DEVICE Indication of a modified configuration If the DIP switch position is at ON (right), the relevant LED flashes yellow Special configuration, two-hand operation If the DIP Flickering If the DIP (NC/NO, autostart, 2x1-channel) switch yellow switch...
Page 191 Display and diagnostics 12.4 Diagnostics Error mode Explanation DEVICE Device fault (restart possible by pressing the SET/RESET button) Group error (restart possible by pressing the SET/RESET button) Group error, cross-circuit at the input (restart possible by Flashing pressing the SET/RESET button) yellow System stop (restart possible by disconnecting and re- connecting the operating voltage)
Page 192 Display and diagnostics 12.4 Diagnostics 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 193: Technical Data
Technical data 13.1 General technical data Technical data valid for all 3SK1 products in this manual. Product brand name SIRIUS Product designation Safety relay Version of the product for EMERGENCY STOP and protective doors IP degree of protection of the enclosure IP20 Touch protection against electric shock Safe from finger-touch...
Page 194 Technical data 13.1 General technical data Mounting position Any (except 3SK1213) 3SK1213: +/- 22.5° lateral inclination Type of fixing Snap-on mounting Comply with the instructions given for the respective device Type of electrical connection 3SK..-1..3SK..-2..screw-type push-in connection Maintenance The 3SK1 safety relays are maintenance-free Certificate of suitability Yes (except 3SK1230)
Page 195 Technical data 13.1 General technical data values for the 3SK1 safety relays Device versions: 3SK1121-.AB40 3SK1111-.AB30 3SK1111-.AW20 3SK1211-.BB40 3SK1211-.BB00 3SK1211-.BW20 Utilization category Ue (V) Ie (A) value (operating cycles) AC-1 500000 860000 1300000 AC-15 300000 850000 1100000 DC-13 300000 2000000 7000000 Device version: 3SK1121-.CB4.
Page 196 Technical data 13.1 General technical data Device versions: 3SK1213-.AB40 3SK1213-.AJ20 3SK1213-.AL20 Utilization category Ue (V) Ie (A) value (operating cycles) AC-1 1370000 AC-15 1370000 DC-13 1370000 PFHD and PFDavg values of the 3SK1 safety relays The table below shows the values of the: ●...
Page 197: Basic Units
Technical data 13.2 Basic units 13.2 Basic units 13.2.1 Standard 13.2.1.1 Technical data for 3SK1111 Standard relay basic unit 3SK1111-.AB.. 3SK1111-.AW.. Insulation voltage rated value Resistance against shock 10g / 11 ms Number of sensor inputs 1-channel or 2-channel Design of the cascading none Type of the safety-related wiring of the inputs single-channel and two-channel...
Page 198 Technical data 13.2 Basic units 3SK1111-.AB.. 3SK1111-.AW.. Number of outputs as contact-affected switching element • – as NC contact for reporting function delayed switching – as NC contact for reporting function instantaneous switching – as NC contact safety-related delayed switching –...
Page 199 Technical data 13.2 Basic units 3SK1111-.AB.. 3SK1111-.AW.. Switching capacity current of the NO contacts of the relay outputs at DC-13 • – at 24 V – at 115 V – at 230 V at AC-15 • – at 115 V –...
Page 200 Technical data 13.2 Basic units 3SK1111-.AB.. 3SK1111-.AW.. Make time with automatic start • 0.11 – typical 0.32 0.13 – for DC maximum 0.32 0.13 – for AC maximum – after mains power cut 0.11 – typical 0.32 0.13 – maximum with monitored start •...
Page 201 Technical data 13.2 Basic units 3SK1111-.AB.. 3SK1111-.AW.. Control supply voltage — for DC rated value • — – minimum — – maximum — at 50 Hz at AC rated value • — – minimum — – maximum — at 60 Hz at AC rated value •...
Page 202: Technical Data For 3Sk1112 Standard Solid-State Basic Unit
Technical data 13.2 Basic units 13.2.1.2 Technical data for 3SK1112 Standard solid-state basic unit 3SK1112-.BB.. Insulation voltage rated value Resistance against shock 10g / 11 ms Number of sensor inputs 1-channel or 2-channel Design of the cascading Type of the safety-related wiring of the inputs single-channel and two-channel Product feature transverse contact-secure Safety Integrity Level (SIL)
Page 203 Technical data 13.2 Basic units 3SK1112-.BB.. Design of the input cascading-input/functional switching • feedback input • start input • Design of the electrical connection jumper socket Operating cycles maximum 2 000 Switching capacity current of the semiconductor outputs at DC-13 at 24 V Switching capacity current of the NO contacts of the relay outputs at DC-13...
Page 204 Technical data 13.2 Basic units 3SK1112-.BB.. Make time with automatic start • — – typical 0.085 – for DC maximum — – for AC maximum – after mains power cut – typical – maximum with monitored start • — – typical 0.085 –...
Page 205 Technical data 13.2 Basic units 3SK1112-.BB.. Control supply voltage for DC rated value • — – minimum — – maximum — at 50 Hz at AC rated value • — – minimum — – maximum — at 60 Hz at AC rated value •...
Page 206: Advanced
Technical data 13.2 Basic units 13.2.2 Advanced 13.2.2.1 Technical data for 3SK1120 Advanced solid-state basic unit 3SK1120-.AB.. Insulation voltage rated value Resistance against shock 10g / 11 ms Number of sensor inputs 1-channel or 2-channel Design of the cascading Type of the safety-related wiring of the inputs single-channel and two-channel Product feature transverse contact-secure Safety Integrity Level (SIL)
Page 207 Technical data 13.2 Basic units 3SK1120-.AB.. Stop category according to DIN EN 60204-1 Design of the input cascading-input/functional switching • feedback input • start input • Design of the electrical connection jumper socket Operating cycles maximum 2 000 Switching capacity current of the semiconductor outputs at DC-13 at 24 V Switching capacity current of the NO contacts of the relay outputs at DC-13...
Page 208 Technical data 13.2 Basic units 3SK1120-.AB.. Make time with automatic start • — – typical 0.085 – for DC maximum — – for AC maximum – after mains power cut – typical – maximum with monitored start • — – typical 0.085 –...
Page 209 Technical data 13.2 Basic units 3SK1120-.AB.. Control supply voltage for DC rated value • — – minimum — – maximum — at 50 Hz at AC rated value • — – minimum — – maximum — at 60 Hz at AC rated value •...
Page 210: Technical Data For 3Sk1121 Advanced Relay Instantaneous Basic Unit
Technical data 13.2 Basic units 13.2.2.2 Technical data for 3SK1121 Advanced relay instantaneous basic unit 3SK1121-.AB.. Insulation voltage rated value Resistance against shock 10g / 11 ms Number of sensor inputs 1-channel or 2-channel Design of the cascading Type of the safety-related wiring of the inputs single-channel and two-channel Product feature transverse contact-secure Safety Integrity Level (SIL)
Page 211 Technical data 13.2 Basic units 3SK1121-.AB.. Design of the input cascading-input/functional switching • feedback input • start input • Design of the electrical connection jumper socket Operating cycles maximum Switching capacity current of the semiconductor outputs at DC-13 at — 24 V Switching capacity current of the NO contacts of the relay outputs at DC-13...
Page 212 Technical data 13.2 Basic units 3SK1121-.AB.. Make time with automatic start • — – typical 0.11 – for DC maximum — – for AC maximum – after mains power cut – typical – maximum with monitored start • — – typical 0.11 –...
Page 213 Technical data 13.2 Basic units 3SK1121-.AB.. Control supply voltage for DC rated value • — – minimum — – maximum — at 50 Hz at AC rated value • — – minimum — – maximum — at 60 Hz at AC rated value •...
Page 214: Technical Data For 3Sk1121 Advanced Relay Time-Delayed Basic Unit
Technical data 13.2 Basic units 13.2.2.3 Technical data for 3SK1121 Advanced relay time-delayed basic unit 3SK1121-.CB.1 3SK1121-.CB.2 3SK1121-.CB.4 Insulation voltage rated value Resistance against shock 10g / 11 ms Number of sensor inputs 1-channel or 2-channel Design of the cascading Type of the safety-related wiring of single-channel and two-channel the inputs...
Page 215 Technical data 13.2 Basic units 3SK1121-.CB.1 3SK1121-.CB.2 3SK1121-.CB.4 Number of outputs as contact- affected switching element as NO contact safety-related as contact-affected switching • element – as NC contact for reporting function instantaneous switching – as NO contact for reporting function instantaneous switching –...
Page 216 Technical data 13.2 Basic units 3SK1121-.CB.1 3SK1121-.CB.2 3SK1121-.CB.4 Switching capacity current of the — semiconductor outputs at DC-13 at 24 V Switching capacity current of the NO contacts of the relay outputs at DC-13 • – at 24 V – at 115 V –...
Page 217 Technical data 13.2 Basic units 3SK1121-.CB.1 3SK1121-.CB.2 3SK1121-.CB.4 Make time with automatic start • — – typical 0.11 – for DC maximum — – for AC maximum – after mains power cut – typical – maximum with monitored start • —...
Page 218 Technical data 13.2 Basic units 3SK1121-.CB.1 3SK1121-.CB.2 3SK1121-.CB.4 Control supply voltage for DC rated value • — – minimum — – maximum — at 50 Hz at AC rated value • — – minimum — – maximum — at 60 Hz at AC rated value •...
Page 219: Technical Data For 3Sk1122 Advanced Solid-State Instantaneous Basic Unit
Technical data 13.2 Basic units 13.2.2.4 Technical data for 3SK1122 Advanced solid-state instantaneous basic unit 3SK1122-.AB.. Insulation voltage rated value Resistance against shock 10g / 11 ms Number of sensor inputs 1-channel or 2-channel Design of the cascading Type of the safety-related wiring of the inputs single-channel and two-channel Product feature transverse contact-secure Safety Integrity Level (SIL)
Page 220 Technical data 13.2 Basic units 3SK1122-.AB.. Design of the input cascading-input/functional switching • feedback input • start input • Design of the electrical connection jumper socket Operating cycles maximum 2 000 Switching capacity current of the semiconductor outputs at DC-13 at 24 V Switching capacity current of the NO contacts of the relay outputs at DC-13...
Page 221 Technical data 13.2 Basic units 3SK1122-.AB.. Make time with automatic start • — – typical 0.085 – for DC maximum — – for AC maximum – after mains power cut – typical – maximum with monitored start • — – typical 0.085 –...
Page 222 Technical data 13.2 Basic units 3SK1122-.AB.. Control supply voltage for DC rated value • — – minimum — – maximum — at 50 Hz at AC rated value • — – minimum — – maximum — at 60 Hz at AC rated value •...
Page 223: Technical Data For 3Sk1122 Advanced Solid-State Time-Delayed Basic Unit
Technical data 13.2 Basic units 13.2.2.5 Technical data for 3SK1122 Advanced solid-state time-delayed basic unit 3SK1122-.CB.1 3SK1122-.CB.2 3SK1122-.CB.4 Insulation voltage rated value Resistance against shock 10g / 11 ms Number of sensor inputs 1-channel or 2-channel Design of the cascading Type of the safety-related wiring of single-channel and two-channel the inputs...
Page 224 Technical data 13.2 Basic units 3SK1122-.CB.1 3SK1122-.CB.2 3SK1122-.CB.4 Number of outputs as contact-affected switching • element – as NC contact for reporting function instantaneous switching – as NO contact for reporting function instantaneous switching – as NC contact for reporting function delayed switching –...
Page 225 Technical data 13.2 Basic units 3SK1122-.CB.1 3SK1122-.CB.2 3SK1122-.CB.4 Switching capacity current of the NO contacts of the relay outputs at DC-13 • — – at 24 V — – at 115 V — – at 230 V at AC-15 • —...
Page 226 Technical data 13.2 Basic units 3SK1122-.CB.1 3SK1122-.CB.2 3SK1122-.CB.4 Make time with automatic start • — – typical 0.085 – for DC maximum — – for AC maximum – after mains power cut – typical – maximum with monitored start • —...
Page 227 Technical data 13.2 Basic units 3SK1122-.CB.1 3SK1122-.CB.2 3SK1122-.CB.4 Control supply voltage for DC rated value • — – minimum — – maximum — at 50 Hz at AC rated value • — – minimum — – maximum — at 60 Hz at AC rated value •...
Page 228: Expansion Modules
Technical data 13.3 Expansion modules 13.3 Expansion modules 13.3.1 Output expansions 13.3.1.1 Technical data for output expansion 3SK1211 3SK1211-.BB0. 3SK1211-.BB4. 3SK1211-.BW2. Insulation voltage rated value Resistance against shock 10g / 11 ms Number of sensor inputs 1-channel — or 2-channel Type of the safety-related wiring of —...
Page 229 Technical data 13.3 Expansion modules 3SK1211-.BB0. 3SK1211-.BB4. 3SK1211-.BW2. Number of outputs as contact- affected switching element as NC contact for reporting • function instantaneous switching as NO contact for reporting • function instantaneous switching as NC contact for reporting • function delayed switching as NO contact for reporting •...
Page 230 Technical data 13.3 Expansion modules 3SK1211-.BB0. 3SK1211-.BB4. 3SK1211-.BW2. Switching capacity current of the NO contacts of the relay • outputs – at DC-13 – at 24 V – at 115 V – at 230 V – at AC-15 – at 115 V –...
Page 231 Technical data 13.3 Expansion modules 3SK1211-.BB0. 3SK1211-.BB4. 3SK1211-.BW2. Make time with automatic start • 0.025 0.015 0.035 – typical — 0.03 — – for DC maximum 0.04 — 0.035 – for AC maximum – after mains power cut 0.025 0.015 0.035 –...
Page 232 Technical data 13.3 Expansion modules 3SK1211-.BB0. 3SK1211-.BB4. 3SK1211-.BW2. Control supply voltage — — for DC rated value • — – minimum — – maximum — at 50 Hz at AC rated value • — – minimum — – maximum — at 60 Hz at AC rated value •...
Page 233: Technical Data For Output Expansion 3Sk1213
Technical data 13.3 Expansion modules 13.3.1.2 Technical data for output expansion 3SK1213 3SK1213-.AB.. 3SK1213-.AJ.. 3SK1213-.AL.. Insulation voltage rated value Resistance against shock 5 g / 10 ms Number of sensor inputs 1-channel — or 2-channel Type of the safety-related wiring of —...
Page 234 Technical data 13.3 Expansion modules 3SK1213-.AB.. 3SK1213-.AJ.. 3SK1213-.AL.. Operating cycles maximum Switching capacity current of the NO contacts of the relay • outputs – at DC-13 – at 24 V – at 115 V 0.55 – at 230 V – at AC-15 –...
Page 235 Technical data 13.3 Expansion modules 3SK1213-.AB.. 3SK1213-.AJ.. 3SK1213-.AL.. Make time with automatic start • 0.05 0.01 – typical 0.07 — – for DC maximum — 0.015 – for AC maximum – after mains power cut 0.05 0.01 – typical 0.07 0.015 –...
Page 236 Technical data 13.3 Expansion modules 3SK1213-.AB.. 3SK1213-.AJ.. 3SK1213-.AL.. Control supply voltage — for DC rated value • — – minimum — – maximum — at 50 Hz at AC rated value • — – minimum — – maximum — at 60 Hz at AC rated value •...
Page 237: Input Expansions
Technical data 13.3 Expansion modules 13.3.2 Input expansions 13.3.2.1 Technical data for input expansion 3SK1220 3SK1220-..Insulation voltage rated value Resistance against shock 10g / 11 ms Number of sensor inputs 1-channel or 2-channel Type of the safety-related wiring of the inputs single-channel and two-channel Product feature transverse contact-secure Safety Integrity Level (SIL) according to IEC 61508...
Page 238 Technical data 13.3 Expansion modules 3SK1220-..Switching capacity current of the NO contacts of the relay outputs • – at DC-13 — – at 24 V — – at 115 V — – at 230 V – at AC-15 — –...
Page 239 Technical data 13.3 Expansion modules 3SK1220-..Backslide delay time 0.04 after opening of the safety circuits typical • at mains power cut • — – typical — – maximum Adjustable backslide delay time after opening of the safety circuits — initial value •...
Page 240 Technical data 13.3 Expansion modules 3SK1220-..Contact reliability of the auxiliary contacts — Product function parameterizable Sensor floating / sensor non-floating, monitored start / autostart, 1-channel / 2-channel sensor connection, cross- circuit detection, startup testing, antivalent sensors, 2-hand switches Suitability for interaction pressing control Suitability for use device connector 3ZY12 Suitability for use monitoring of floating sensors...
Page 241: Technical Data For Power Supply Unit 3Sk1230
Technical data 13.3 Expansion modules 13.3.2.2 Technical data for power supply unit 3SK1230 Bestell-Nr. 3SK1230-1AW20 3SK1230-2AW20 Type of current supply 24 V / 0,6 A Type of display for normal operation Green LED for 24 V OK Overvoltage class Installation category III Characteristic feature of the output short-circuit protected Product feature Bridging of channels...
Page 242 Technical data 13.3 Expansion modules 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 243: Dimension Drawings
Dimension drawings 14.1 Dimension drawings for 3SK1 devices Figure 14-1 Enclosure 17.5 mm for safety relays: 3SK1120-….. ; 3SK1220-….. 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 244 Dimension drawings 14.1 Dimension drawings for 3SK1 devices Figure 14-2 Drilling diagram, enclosure 17.5 mm 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 245 Dimension drawings 14.1 Dimension drawings for 3SK1 devices Figure 14-3 Enclosure 22.5 mm (short) for safety relays: 3SK1112-….. 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 246 Dimension drawings 14.1 Dimension drawings for 3SK1 devices Figure 14-4 Enclosure 22.5 mm (long) for safety relays: 3SK1111-….. ; 3SK1121-….. ; 3SK1122-….. ; 3SK1211-….. ; 3SK1230-….. 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 247 Dimension drawings 14.1 Dimension drawings for 3SK1 devices Figure 14-5 Drilling diagram, enclosure 22.5 mm 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 248 Dimension drawings 14.1 Dimension drawings for 3SK1 devices Figure 14-6 Dimension drawing 3SK1 device on device connector 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 249 Dimension drawings 14.1 Dimension drawings for 3SK1 devices Figure 14-7 Enclosure 90 mm for safety relays: 3SK1213-….. 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 250 Dimension drawings 14.1 Dimension drawings for 3SK1 devices Figure 14-8 Drilling diagram, enclosure 90 mm 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 251: Dimension Drawings For 3Sk1 Device Connector
Dimension drawings 14.2 Dimension drawings for 3SK1 device connector 14.2 Dimension drawings for 3SK1 device connector Figure 14-9 Device connector 17.5 mm 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 252 Dimension drawings 14.2 Dimension drawings for 3SK1 device connector Figure 14-10 Device connector, type 1, 22.5 mm 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 253 Dimension drawings 14.2 Dimension drawings for 3SK1 device connector Figure 14-11 Device termination connector, type 1, 22.5 mm 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 254 Dimension drawings 14.2 Dimension drawings for 3SK1 device connector Figure 14-12 Device connector, type 2, 22.5 mm 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 255 Dimension drawings 14.2 Dimension drawings for 3SK1 device connector Figure 14-13 Device termination connector, type 2, 22.5 mm 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 256 Dimension drawings 14.2 Dimension drawings for 3SK1 device connector Figure 14-14 Drilling plan for 17.5 mm and 22.5 mm device connectors 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 257: Accessories
Accessories The following accessories are available for the 3SK1 devices. Designation MLFB SIRIUS terminal, 2-pole, screw-type, 1 x 2.5 mm² 3ZY1121-1BA00 SIRIUS terminal, 3-pole, screw-type, 1 x 2.5 mm² 3ZY1131-1BA00 SIRIUS terminal, 2-pole, push-in, 1 x 2.5 mm² 3ZY1121-2BA00 SIRIUS terminal, 3-pole, push-in, 1 x 2.5 mm² 3ZY1131-2BA00 SIRIUS device connector, type 1, 17.5 mm 3ZY1212-1BA00...
Page 258 Accessories 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 259: Appendix
Have you noticed any errors while reading this manual? If so, please use this form to tell us about them. We welcome comments and suggestions for improvement. Fax response From (please complete): Name SIEMENS AG I IA CE MK&ST 3 Company/Department 92220 Amberg / Germany Address...
Page 260 Appendix A.1 Correction sheet 3SK1 safety relays Manual, 04/2013, A5E02526190021A/RS-AA/01...
Page 262 Contact for all technical information: Technical Assistance Tel.: +49 (911) 895-5900 e-mail: technical-assistance@siemens.com www.siemens.com/sirius/technical-assistance Siemens AG Subject to change without prior notice Industry Sector Order No.: 3ZX1012-0SK11-0AC0 Postfach 23 55 90713 FUERTH © Siemens AG 2013 GERMANY Industrial Controls SIRIUS www.siemens.com/automation...

Siemens SIRIUS 3SK1 Manual

1 Introduction

2 Product-Specific Safety Information

3 Product Overview for 3SK1

4 Safety Systems - General Information

3 SK1 Devices

6 System Configuration

7 Circuit Diagrams

8 Mounting

9 Connection

10 Configuration / Operation

11 Commissioning

12 Display and Diagnostics

13 Technical Data

14 Dimension Drawings

15 Accessories

Appendix

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Summary of Contents for Siemens SIRIUS 3SK1

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