E.BE

Brake transistor err

Mitsubishi Electric · Mitsubishi FR-E800 Variable Frequency Drive

What does E.BE mean?

The inverter output is shut off due to a fault in the brake circuit, typically indicating damage to the brake transistor. This is a critical internal hardware fault requiring immediate attention to prevent further damage.

Common Causes

  • Brake transistor failure.
  • The electronic brake is not functioning correctly.
  • Overheating of the brake transistor.
  • Internal fault in the brake control circuit.
  • Short circuit within the brake system.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reduce the load inertia to minimize demands on the regenerative braking circuit.

  2. 2

    Check that the brake duty cycle is proper for the application, ensuring it does not exceed the inverter's capabilities.

  3. 3

    Replace the entire inverter as this fault often signifies irreparable internal damage.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Mitsubishi FR-E800 Variable Frequency Drive