Overcurrent
Yaskawa · F7 Drive
What does OC mean?
The Drive's output current has exceeded its overcurrent detection level, typically around 200% of the Drive's rated output current. Common causes include phase-to-phase shorts in the motor or cables, a locked rotor, an excessively heavy load, or insufficient acceleration/deceleration times. Repeated overcurrent can cause damage to the Drive's power components or the motor.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Inspect the mechanical load for any binding, jamming, or excessive weight that could cause an overcurrent condition.
- 4
Review and adjust acceleration (C1-01) and deceleration (C1-02) times to be longer if they are too short for the load's inertia.
- 5
Verify that the motor's Full Load Amperage (FLA) rating is appropriate for the Drive's rated output current.