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
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