Cross connection

Hva betyr 3181 ?

The drive has detected an incorrect connection between the input power cables and the motor cables, specifically if the input power is connected to the motor output terminals. This is a critical wiring error that will trip the drive to prevent severe damage to the power unit and motor due to incorrect voltage application.

• Severe wiring error where incoming mains power (L1, L2, L3) is incorrectly connected to motor terminals (U, V, W).
• Incorrect labeling of terminals or cables during installation, leading to connection mistakes.
• Misunderstanding of the drive's terminal block layout during initial commissioning or maintenance.
• Human error during cable termination leading to accidental cross-connection.

Klikk på steg for å spore fremgangen.

1. 1

   IMMEDIATELY disconnect all power to the drive and associated equipment at the main circuit breaker.

2. 2

   Visually inspect the drive's terminal block for incoming power connections (e.g., L1, L2, L3) and motor connections (e.g., U, V, W).

3. 3

   Trace the incoming power cables (e.g., from main contactor) to ensure they are connected ONLY to the drive's input terminals.

4. 4

   Trace the motor cables (e.g., from motor junction box) to ensure they are connected ONLY to the drive's output terminals.

5. 5

   Use a multimeter to confirm phase sequence and continuity from main supply to drive input and from drive output to motor, correcting any errors.