Typical circuit diagrams
9.4 DM-F PROFIsafe, actuator circuits
90
SIMOCODE pro - Fail-Safe Digital Modules
Manual, 11/2017, NEB631679702000/RS-AA/002
Actuator circuit with feedback circuit, control function = pole-changing starter
Figure 9-29 Circuit diagram of an actuator circuit with feedback circuit, control function =
pole-changing starter, with incoming supply contactor, maximum safety integrity level
SIL 3 / performance level PL e
Q1: Incoming supply contactor
Q2: Line contactor, fast
Q3: Line contactor, slow
Note
Protective circuit required to suppress surge voltages!