Output Open Detected

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This fault signifies that the measured output current for either drive 1 or drive 2 is less than 2% of the unit's nominal current (IN,unit/device) when the respective drive is enabled. This strongly suggests an open circuit in the motor circuit, such as a disconnected or broken motor cable, a faulty motor winding, or an issue with the drive's output stage itself. This condition prevents motor operation and could indicate significant wiring or motor damage, posing a risk of component failure if the unit attempts to drive into an open circuit.

• Open circuit in one or more motor phases (U, V, W) due to a broken wire in the motor cable.
• Poor or loose connection at the motor terminal block or the drive's output terminals (U1/V1/W1 or U2/V2/W2).
• Motor winding has an open circuit (e.g., internal break), preventing current flow despite the drive being enabled.
• No motor connected to the drive output while the drive is enabled and attempting to run a motor.
• Internal fault within the MOVIFIT unit's current measurement circuitry for the specific drive output.

Klikk på steg for å spore fremgangen.

1. 1

   Measure the resistance of each motor winding (U-V, V-W, W-U) using a multimeter and compare to specified values (e.g., from motor nameplate or manual).

2. 2

   Verify continuity of each motor phase cable (U, V, W) from the MOVIFIT output terminals to the motor terminal block using a multimeter.

3. 3

   Inspect and tighten all connections at the MOVIFIT output terminals (U1/V1/W1 or U2/V2/W2) and the motor terminal block.

4. 4

   Ensure a motor is actually connected and correctly wired to the drive output before enabling the drive.

5. 5

   Check drive parameters related to minimum current detection thresholds (if adjustable, e.g., P303 for min current threshold) to ensure they are appropriate.