Siemens SIRIUS 3SK1

• In the case of a change to the device con󹪝guration during operation, error mode is activated
immediately. Restarting must be triggered via Power OFF/ON.
• If output expansions are used, a device termination connector for the 3SK1 safety relay must
ALWAYS be used under the 󹪝nal device on the right (for 3SK1211) with the switch setting: "1"
(switch in top position), device termination connector set for 3SK1 safety relay, > 45 mm
wide (for 3SK1213) or device termination connectors for 3RM1 motor starters must be used
• 22.5 mm device termination connector for 3SK1 / 3RQ1:
– Below basic unit: The switch of the device termination connector must be open, i.e. in
position 2 at the bottom.
– Below 3SK1211 output expansion: The switch of the device termination connector must
be closed, i.e. in position 1 at top
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• No switch needs to be set on the device termination connector for 3RM1 motor starters
• As from certain load limits/temperature ranges, clearances must be observed for 3RM1
Failsafe motor starters. To this end, there are appropriate device connectors for looping
through signals (3ZY1212-2AB00).
• In the con󹪝guration with a 3SK1 Advanced basic unit on a 3ZY12 device connector, 3RM1
Failsafe motor starters can only be controlled by the instantaneous enable signal of the 3SK1
unit. If control of the 3RM1 Failsafe motor starters by means of the time-delayed output is
desired, this can only be done by wiring the time-delayed safety-related output of the 3SK1
basic unit.
You will 󹪝nd further information on the con󹪝guration guidelines for 3RM1 Failsafe motor
starters in the SIRIUS 3RM1 motor starters (http://support.automation.siemens.com/WW/
view/en/66295730) manual, in the chapter "Load feeders - protection against short circuit".
Con󹪝guration notes for using device connectors
3ZY12 device connectors can only be used with devices of the Advanced device series.
Further con󹪝guration 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.
System con󹪝guration
6.3 System con󹪝guration rules
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005 121