Typical circuit diagrams
9.3 DM-F LOCAL, actuator circuits
78
SIMOCODE pro - Fail-Safe Digital Modules
Manual, 11/2017, NEB631679702000/RS-AA/002
Actuator circuit with feedback circuit, control function = Dahlander starter
Figure 9-17 Circuit diagram of an actuator circuit with feedback circuit, control function = Dahlander
starter, with incoming supply contactor, maximum safety integrity level
SIL 3 / performance level PL e
*) Supply of feedback circuit from T3 for applications without cross-circuit detection
Q1: Incoming supply contactor
Q2: Line contactor, slow
Q3: Line contactor, fast
Q4: Star contactor
Note
Protective circuit required to suppress surge voltages!
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