Typical circuits
A.2 Typical circuits for safety-related shutdown
SIRIUS 3RM1 motor starter
Manual, 06/2016, A5E0345285095020A/RS-AE/005
181
A.2.4
3SK2 safety relay with 3RM11 motor starter via device connector
Description
●
Shutdown via 3RM1 Failsafe motor starter
●
"Reacting" subsystem up to SILCL 3 as per EN 62061 and PL e / Cat. 4 as per
EN ISO 13849-1
●
Safety-related control of up to five 3RM1 Failsafe motor starters via 3ZY12 device
connectors
●
Operational, non-safety-related switching of the 3RM1 Failsafe motor starter through its
local input IN1 by means of the 3SK2 safety relay
WARNING
Loss of the safety function when using device connectors.
Can cause death or serious injury.
When operating with a 3SK2 safety relay and 3ZY12 device connectors, the supply voltage
for 3RM1 Failsafe motor starters is established via the 3ZY12 device connectors.
To prevent bypassing of the safety function, do not connect anything to terminals A1 and
A2 of the 3RM1 Failsafe motor starters in this case.
Circuit diagram
-K1
3SK2 safety relay 22.5 mm
-Q1
3RM11 Failsafe motor starters (direct-on-line starters)
You will find detailed information, for example, about "logic" or "parameters" in the manual
"SIRIUS 3SK2 Safety Relays
https://support.industry.siemens.com/cs/ww/de/view/109444336
)."