Overcurrent During Acceleration

What does OC1 mean?

This fault indicates an overcurrent condition during motor acceleration by the Altivar 212 drive, often caused by excessively short acceleration times, incorrect motor control settings, or high-inertia loads.

• Acceleration time is too short (ACC or F500).
• Incorrect setting of [Mot cont. mode sel.] (Pt).
• Drive is starting into a rotating load.
• Drive is powering a low impedance motor.
• Ground fault in the motor or cables.

Click steps to track your progress.

1. 1

   Increase the acceleration time parameters (ACC or F500).

2. 2

   Select the correct setting for parameter [Mot cont. mode sel.] (Pt).

3. 3

   Enable catch on the fly function (F301).

4. 4

   Adjust the switching frequency parameter F300.

5. 5

   Set parameter F316 ([Switch. freq. mode]) to 1 or 3.