Circuit Examples - ABB CL Series Applications Manual

Wiring with the logic relay

Circuit examples

184
Star-delta starting
Two star-delta circuits can be obtained with the logic relay.
The advantage of the logic relay is that you can select any
changeover time between star and delta contactors and any
wait time between switching off the star contactor and
switching on the delta contactor.
L
S1
S2 Q11
Q12 Q11
K1 Q11
N
Figure 73: Star-delta circuit with conventional contactors
1SVC 440 795 M0100
K1
Q13 Q12
Q12 Q13