80190-640-03-R | SIGNAL CONDITIONING BOARD

• Because the drive system needs to have complete control over all contactors, investigationof the specific contactor fault is required.• Verify contactor feedback.• Verify the control power circuit for the contactor.• Check permissive string to the contactor control relay (refer to drawing).• Check contactor/breaker for physical malfunction (auxiliaries).• Check ACB inputs and outputs at J1.• Depending on the mode of operation (Normal, System Test, Open-Circuit Test, DC CurrentTest, or Open-Loop), there are specific states for all the possible system isolation switches(Refer to the description of parameter 141 Hardware Options1. Be sure the isolation switchesare in the proper position.• Verify wiring feedback.• Verify isolation switch mechanical auxiliary setup.• READ ASSOCIATED DESCRIPTION.