EXCESSIVE FIELD CURRENT

What does 401 mean?

The measured motor field current exceeded 125% of the rated current, as defined by parameter #50. This can indicate issues with the motor field, current regulation, or power circuit.

• Partially shorted motor field coil.
• Wrong data entry causing unstable motor field current regulator.
• Mis-wiring of module A3 (incorrect phasing).
• Wrong current tap at A3, TB4, or A3 SW1 setting.
• Malfunction of the motor field power circuit (module A3).

Click steps to track your progress.

1. 1

   Check the motor field coil for partial shorts.

2. 2

   Review and verify settings for parameters #49, #50, #51, #52, #54, and #55.

3. 3

   Verify that the phasing of module A3 is correct.

4. 4

   Verify the current tap setting at A3, TB4, or A3 SW1.

5. 5

   Check module A3 for malfunction within the motor field power circuit.