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Configuration
4.9 Examples/applications
Configuration with 3SK safety relay and device connectors
If you use safety-related motor starters (3RM11..-.AA04 / 3RM13..-.AA04) with a control
supply voltage of 24 V DC with the 3SK safety relay, you can establish safe connection of
the safety-related wiring using the device connectors. Use of device connectors avoids
errors when setting up the control circuit wiring and offers savings in cable laying. In addition,
the test overhead following completion of the control cabinets is reduced. The
3RM11/3RM13 safety-related motor starters can be used optimally as output expansions in
the 3SK system.
When the EMERGENCY-STOP is actuated, the motor starters' control supply voltage is shut
down and the motor is isolated from the power supply. Due to the internal self-monitoring of
the 3RM11/13 Failsafe motor starters in compliance with SILCL 3/PL e, there is no need for
a feedback signal to the 3SK safety relay.
Loss of the safety function when using device connectors.
Can cause death or serious injury.
When the product is operated with a 3SK safety relay and a device connector, the supply
voltage for 3RM11 / 3RM13 motor starters is fed in via the device connectors.
In this case, do not connect anything to terminals A1 and A2 of the 3RM11/3RM13 Failsafe
motor starters, in order to prevent bypassing of the safety function.
Loss of the safety function during hybrid operation of Failsafe and Standard motor starters.
Can cause death or serious injury.
Hybrid operation of 3RM10/3RM12 Standard motor starters with 3RM11/3RM13 Failsafe
motor starters in safety-related applications is not admissible.
Only ever use safety-related motor starters (3RM11 Failsafe and 3RM13 Failsafe) in safety-
related applications.
Note
Please observe the information about the control supply voltage and the control inputs in
Chapter "Device versions (Page 29)" and in the "Technical Data Sheet
(https://support.industry.siemens.com/cs/ww/en/ps/16311/td)."
84
WARNING
WARNING
SIRIUS 3RM1 motor starter
Manual, 06/2016, A5E0345285095020A/RS-AE/005
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