High Slip Braking Overload
Yaskawa · P1000 AC Drive
What does oL7 mean?
An overload condition occurred during high slip braking, indicating excessive regenerative energy or an issue with the braking process. This can lead to component overheating.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Verify drive parameters related to deceleration time (e.g., P2-xx) and braking resistor operation (e.g., P6-xx series) against application requirements and specifications.
- 2
Inspect the external braking resistor (if installed) and its wiring connections to the drive terminals (+1/+2) for any damage, loose terminals, or signs of overheating.
- 3
Measure the resistance value of the external braking resistor (with power off and discharged) and compare it against the specified ohmic rating.
- 4
Observe the mechanical load and deceleration profile during operation to identify excessive inertia or overly aggressive deceleration rates causing regenerative conditions.