Overvoltage During Deceleration

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This fault indicates an overvoltage condition during motor deceleration by the Altivar 212 drive, possibly due to excessively short deceleration times, overhauling loads, or fluctuating input voltage.

• Deceleration time is too short (dEC or F501).
• Overhauling load on the motor.
• 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.
• Drive is starting into a rotating load.
• Intermittent output phase fault.

Klikk på steg for å spore fremgangen.

1. 1

   Increase the deceleration time parameters (dEC or F501).

2. 2

   Enable parameter F305 ([Overvoltage fault]) for overvoltage prevention.

3. 3

   Install a line reactor to mitigate input voltage issues.

4. 4

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

5. 5

   Enable catch on the fly function (F301).