OC5-Trip (I*t Overload)
Kuka · KR C2 Robot Controller
What does 15 mean?
This fault indicates an I*t overload condition. For the KPS-600, it specifically refers to an overload of the brake resistor during operation, suggesting prolonged or heavy braking cycles. For KSDs, it indicates a general I*t overload, meaning the thermal capacity of a component (likely the motor or drive's power stage) has been exceeded over time, risking damage.
Common Causes
- OC5-Trip: Overload detected based on I*t integral (P1-05).
- Sustained motor operation near its thermal limit.
- Motor operating at reduced speed under heavy load for extended periods.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Verify the motor nominal current setting in the drive parameters matches the motor nameplate FLA.
- 2
Check the acceleration and deceleration ramp times in drive parameters — ensure they are not excessively short for the load inertia.
- 3
Monitor the actual motor load during operation and compare it against the motor's rated capacity.
- 4
For brake resistor overload (KPS-600), verify the sizing and resistance of the brake resistor are appropriate for the application.