Leakage Current and Grounding Anomalies in Servo Presses: Troubleshooting Sequence
High-frequency leakage current flowing through EMI filter capacitors to protective ground is a common occurrence in servo drives and is considered normal; however, a live chassis or frequent tripping of the ground-fault circuit interrupter (GFCI) constitutes a malfunction and should be troubleshot by following a four-step process covering the power supply, grounding, cabling, and motor.
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