4 PKE-SWD-32, interface for motor-starter combination with PKE12/324.3 ProjectionSmartWire-DT modules IP20 09/17 MN05006001Z EN www.eaton.com 97Figure 47: Main circuit for safety-related disconnection of drive groupsIn an emergency, the power for the contactor coils can be switched off usingthe enable circuit of the safety relay. By using additional SmartWire-DTPower modules, contactor groups are made that can be switched offtogether in an emergency. With this circuitry, controls can be assembled upto Safety Category 1 to EN 954-1. The safety relay must comply with Cate-gory 1 or higher (e.g. ESR5-NO-41-24VAC-DC) in this example.4.3.4 Feedback CircuitThe auxiliary contact integrated in the contactor is a mirror contact accordingto IEC/EC 60947-4-1. Using this contact the state of the main contacts can bereliably signalled. The mirror contact can be included into the feedback circuitof the safety relay so that the safety relay only gives a new enable signalwhen the contactor is open.PEL1L2PEL3-M13~MU V W PEU V W PE-Q1 1 3 5I> I> I>2 4 6-M1-Q11 1 3 52 4 6-M13~MU V W PEU V W PE-Q2 1 3 5I> I> I>2 4 6-M2-Q12 1 3 52 4 6-M13~MU V W PEU V W PE-Q3 1 3 5I> I> I>2 4 6-M3-Q13 1 3 52 4 6-M13~MU V W PEU V W PE-Q4 1 3 5I> I> I>2 4 6-M4-Q14 1 3 52 4 6-M13~MU V W PEU V W PE-Q5 1 3 5I> I> I>2 4 6-M5-Q15 1 3 52 4 610 10 10 10 10
