Overvoltage During Constant Speed

What does OP3 mean?

This fault indicates an overvoltage condition while the Altivar 212 drive is operating at a constant speed, often due to abnormal input voltage fluctuations, power network issues, or regenerative braking where the load causes the motor to run faster than the drive's output frequency.

• Input voltage is fluctuating abnormally.
• Power network capacity is greater than 200 kVA.
• Power factor capacitor switching in the supply network.
• SCR switching on the power network.
• The drive is regenerating (load causes motor to run at a frequency higher than drive output frequency).
• Intermittent output phase fault.

Click steps to track your progress.

1. 1

   Install a line reactor to mitigate input voltage issues.

2. 2

   Check the input and output circuits for phase loss detection and rectify.