E
Abnormal Charge of Capacitor Module (ECM)
Fanuc · αi Series AC Servo Motor and Spindle
What does E mean?
The Capacitor Modules are not charging as expected. This indicates a problem with the charging process or a fault within the capacitor modules preventing them from holding charge.
Repair Steps
- 1
Check the power supply connections to the Capacitor Modules.
- 2
Verify the functionality of the charging circuit within the ECM control module.
- 3
Inspect the Capacitor Modules for physical damage or internal failure.
Verified technical data. Last updated: March 2026
Source: Fanuc αi Series AC Servo Motor and Spindle