Here this alarm came SERVO-018 Brake abnormal FAULT .i follow the below procedure Action-3 Solve this issue .but i checked the brake connector & cable everything normal .but how servo amplifier failure
An excessive brake current is detected. The ALM LED on the servo amplifier is lit.
(Action 1) Check the cables and motor brakes connected to CRR88 connector on the servo
amplifier.
If a short-circuit or grounding fault is found, replace the failed part.
(Action 2) Check the cables and motor brakes connected to CRR65A, CRR65B connector on
the servo amplifier. If a short-circuit or grounding fault is found, replace the failed
part.
(Action 3) Replace the servo amplifier.
how servo amplifier failure what is the cause???