Typical circuits
A.2 Typical circuits for safety-related shutdown
SIRIUS 3RM1 motor starter
174
Manual, 06/2016, A5E0345285095020A/RS-AE/005
A.2
Typical circuits for safety-related shutdown
A.2.1
General safety notes
Note
SILCL 3 in accordance with EN 62061/PL e in accordance with EN ISO 13849-1
The 3RM11/3RM13 motor starters are designed in such a way as to allow implementation of
applications up to SILCL 3 in accordance with EN 62061 and PL e/Cat. 4 in accordance with
EN ISO 13849-1.
To achieve SILCL 3/PL e/Cat. 4 for the safety-related application, all components of the
safety functions (detecting/evaluating/reacting) must be designed accordingly.
Note
Safe state
The basis of the safety function is the definition of the safe state. In the case of the 3RM11
and 3RM13 Failsafe motor starters, this is the "OFF state".
DANGER
Hazardous voltage at the motor
Will cause death, serious injury, or damage to property.
Health hazard from automatic hot restart.
The safety function must be checked after every tripping of the motor starter protector (also
in the case of overload).
After every short circuit in the case of short-circuit protection according to type of
coordination 1, a 3RM1 motor starter is defective.
Replace a 3RM1 motor starter including the terminals after a short circuit in the case of
short-circuit protection according to type of coordination 1.
With 3RM11/3RM13 Failsafe motor starters, you must check the safety function in addition
to replacing the unit.
With 3RM11/3RM13 Failsafe motor starters, also check the safety function after a short
circuit in the case of short-circuit protection according to type of coordination 2.
DANGER
Hazardous voltage.
Will cause death or serious injury.
To ensure protection against an electric shock hazard with the hinged cover open at the
signaling contacts 95, 96, 98 at a voltage of
≥
50 V, screw in all terminal screws that are not
needed to clamp conductors.
