Driver Error

What does E30 mean?

This fault is triggered by an instantaneous overcurrent event in the IGBT (Insulated Gate Bipolar Transistor) output stage of the inverter. It signifies a rapid and severe current spike that could damage the IGBTs, causing the inverter to immediately shut off the output to protect these critical power devices, and preventing retry operations.

• Short circuit or ground fault on the motor output terminals (U, V, W) or within the motor windings.
• Rapid acceleration of a high inertia load exceeding inverter current limits (P1-03) or acceleration time (P1-08).
• Damaged IGBT module or gate driver circuit within the inverter's power stage.
• Motor cable insulation breakdown causing phase-to-phase or phase-to-ground faults.
• Incorrect motor parameters (e.g., P2-01, P2-02, P2-03) entered into the inverter setup, leading to miscalculated current control.

Click steps to track your progress.

1. 1

   1. Power down the inverter, disconnect motor cables from U, V, W terminals, then measure resistance between motor phases (U-V, V-W, W-U) and from each phase to ground (U-GND, V-GND, W-GND); expect continuity between phases and open circuit to ground.

2. 2

   2. Inspect motor cables for any physical damage to insulation, especially where they pass through conduits, cable trays, or flex areas.

3. 3

   3. Verify the inverter's acceleration time parameter (P1-08) is adequately set for the load inertia; increase if it is too short for the mechanical system.

4. 4

   4. Confirm all motor nameplate parameters (P2-01 Motor rated power (kW), P2-02 Motor rated voltage (V), P2-03 Motor rated current (A)) are correctly programmed.

5. 5

   5. Perform a no-motor run test (if supported by the inverter) to determine if the fault occurs without the motor connected, indicating an internal inverter issue.