GS20 Fault E.OL — Drive Overload
What This Fault Means
E.OL indicates the drive's electronic thermal overload protection tripped. The drive calculated that the motor has been operating above its thermal capacity based on the I²t model using the programmed motor current (P01.01).
Common Causes
- Sustained load above motor rated current
- P01.01 (motor rated current) set lower than actual motor FLA
- Duty cycle too demanding (frequent starts/stops building heat)
- Ambient temperature reducing the drive/motor derating
- Motor cooling inadequate at low speeds (TEFC motor below 30Hz)
Recommended Fix
- Compare P01.01 with the motor nameplate FLA — set to match.
- Clamp-meter the motor current during peak load — if consistently >FLA, the motor is undersized for the application.
- For TEFC motors running below 30Hz, add a forced-cooling fan to maintain airflow.
- If the duty cycle has heavy start/stop, consider upgrading to a motor with a higher thermal class (Class H).
- Reset by pressing STOP/RESET after the motor has cooled.
Still stuck? Ask Mira.
Paste your fault code into Mira and get an answer from your actual equipment manuals in seconds.
Try free