Output phase fault

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The current measurement system has detected an absence of current in one of the motor phases. This typically signifies an open circuit condition, which could be caused by a broken motor cable, a loose connection, or an internal fault within the motor windings.

• One or more output phases are open or shorted.
• Uneven phase current distribution (P1-04, P1-05).
• Faulty output transistors (IGBTs) in the inverter stage.
• Motor winding insulation breakdown.
• Incorrect motor connection to output terminals.

Klikk på steg for å spore fremgangen.

1. 1

   Inspect all motor cables for continuity and verify secure connections at both the drive and motor terminals.

2. 2

   Check the motor windings for an open circuit using a multimeter to measure resistance between phases U-V, V-W, U-W.