1.
OCR (Overcurrent relay) operates ···· The unit stops.
•
MS (electromagnetic switch) is dropped out, M (motor) is disconnected and the motor stops.
•
AR
23
(OCR relay) is energized and RL
21
(OCR operation indication lamp) lights.
•
All relays drop out because power source to the controller is OFF. For re-start, push OCR manual reset button.
Remarks: As for the procedures except for the above, refer to page 31 as they are the same with those of engine
drive.
– 33 –
B Operation of protection device
