Siemens 340 - Page 151

Typical circuits
A.2 Typical circuits for 3RM1 Failsafe
SIRIUS 3RM1 motor starter
Manual, 11/2013, A5E0345285095020A/RS-AB/002
151
WARNING
Function test interval for 3RM11/3RM13 Failsafe motor starters
In continuous operation, the key safety values apply in the case of a function test interval
(state change of the outputs) ≤ 1 year.
Annual function test
• Actuate the connected sensors.
• Check their effect on the safe evaluation unit and the downstream actuators.
• Activate the safe evaluation unit via the connected sensors.
• Check their effect on the safe evaluation unit and the downstream actuators.
• Defective devices must be replaced.
WARNING
Bypassing the safety function in the event of a fault in the case of 3RM11/3RM13 Failsafe
motor starters with 110 to 230 V AC
/
110 V DC control supply voltage
The control signal for the control inputs in the case of 3RM11/3RM13 Failsafe motor
starters with 110 to 230 V AC control supply voltage must come from A1. Otherwise, the
safety function is bypassed in the event of a fault. Thus, only relay outputs are admissible
when using a PLC.
Do not use a separate control voltage. Only use the relay outputs when using a PLC.
WARNING
Bypassing the safety function when using device connectors
When operating with a 3SK1 safety relay and a device connector, the supply voltage for
3RM1 motor starters is established via the device connectors.
In this case, do not connect anything to terminals A1 and A2 of the 3RM1 motor starters, in
order to prevent bypassing of the safety function.
WARNING
Failure of the safety function during hybrid operation of Failsafe and Standard motor
starters
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.