ABB MD21 - REV-Softstarter (M102 Only); Operating Sequence in REV-Softstarter

REV-softstarter (M102 Only)
This starter is of similar functionality as the NR-
softstarter starter, with additional function to
support reversing the motor.
Name Pin Description
CCLI X4:6 Contactor control voltage input
CCA X4:7 Contactor control A
CCB X4:8 Contactor control B
CCC X4:9 Contactor control C
DI5 (Loc/R) X1:6 Local/Remote control switch input
DI6 (F_Ca) X1:7 Contactor control A feedback
DI7 (F_Cb) X1:8 Contactor control B feedback
—

Operating sequence in REV-softstarter
• Motor is stopped → Start1 → CCA closes → CCC
closes
• Motor is stopped → Start2 → CCB closes → CCC
closes
• Motor is running → Stop → CCC opens → ramp
down time → CCA & CCB opens
—
27 Control circuit for REV-softstarter
* The assigned DI and PIN code may change in actual design
0 4 . MOTOR STARTERS CONTROL 35