Earth Fault / Current Unbalance

What does 2330 mean?

The drive has detected excessive output current unbalance, typically due to an earth fault in the motor or motor cable. For systems with parallel inverter modules (xx refers to module number 1-12), this may indicate an unbalance across units or an internal fault. This condition poses a risk of electrical shock and equipment damage.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If no external earth fault is detected, contact your local ABB representative for internal fault diagnosis.