Motor phase W missing

Was bedeutet ALARM 32 ?

The motor phase W connection between the frequency converter and the motor is missing or interrupted. This prevents proper motor operation and can lead to damage if ignored.

• Loose or disconnected conductor at the drive output terminal W.
• Loose or disconnected conductor at the motor terminal W.
• Break or high resistance in the motor cable's W phase conductor.
• Faulty contactor or circuit breaker in the motor output circuit (if present) for phase W.
• Failure of the drive's output power stage (e.g., IGBT) specifically for phase W.

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Power off the drive and disconnect input power. Visually inspect and tighten connections for the W-phase motor cable at both the drive's W output terminal and the motor's W terminal.

2. 2

   Measure the resistance of the W-phase motor cable conductor from the drive end to the motor end to check for continuity (expect < 1 Ohm).

3. 3

   With motor cables disconnected from the drive, measure the resistance between motor terminals W-U, W-V, and U-V. All three values should be balanced and low.

4. 4

   Check for any external fusing or contactors in the W-phase motor circuit for continuity and proper operation.

5. 5

   If cable and motor are verified good, the fault indicates a potential internal drive hardware issue with the W-phase output.