OV1-Trip (Overvoltage in intermediate circuit while charging)

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This fault indicates an overvoltage condition in the intermediate DC bus circuit during the charging phase (KPS-600). This can be caused by excessive input voltage or issues with the charging circuit, risking damage to power components if the voltage exceeds safe limits.

• OV1-Trip: Overvoltage detected in the intermediate circuit during charging (P1-15).
• Regenerative braking not effectively dissipating energy.
• External power source providing excessive voltage.
• Defect in the drive's DC bus smoothing capacitors.

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1. 1

   Measure the incoming AC line voltage (L1-L2, L2-L3, L3-L1) at the drive input terminals — ensure it is within the drive's specified input range.

2. 2

   Measure the DC bus voltage at terminals +UDC/-UDC during the charging sequence.

3. 3

   Verify the external power supply quality for voltage stability and absence of spikes.