Driver Error

What does E30. mean?

A driver error indicates a fault detected by the inverter's internal driver IC, protecting the main power elements (e.g., IGBTs). This can be triggered by severe momentary overcurrents (above 350% of rated), abnormal internal temperatures, or a drop in the main element drive power supply. This fault prevents inverter restart and usually requires internal component inspection.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Verify the cooling fins for any clogging and ensure they are clean to prevent overheating.

2. 4

   Review the motor load and application to ensure the inverter is not undersized or operating beyond its limits.