ov1 fault in Emotron VSB Drive

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ov1 fault indicates Accel overvoltage. This means the drive's internal DC bus voltage has risen above the maximum safe limit during motor acceleration. Possible Causes: 1: Load inertia is too big. 2: Abnormal input voltage. 3: Output short circuit (phase-to-phase short circuit or output ground short circuit). Solutions: 1: Use dynamic brake. 2: Check power grid voltage. 3: Check motor connection and output ground impedance.

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