OC5 I x t overload

Hva betyr 0015 ?

This fault occurs due to frequent and excessively long acceleration processes with overcurrent, or continuous overload where the motor current (Imotor) exceeds 1.05 times the rated current (Irx). A device utilization (C0064) exceeding 100% releases a warning for this condition. The drive dimensioning may be insufficient for the application's duty cycle.

• Continuous mechanical overload on the motor, causing the motor current (Imotor) to consistently exceed 105% of the motor rated current (Irx, C0091).
• Frequent start/stop cycles or rapid acceleration/deceleration without sufficient cooling time, leading to cumulative thermal stress and Ixt accumulation.
• Incorrectly set motor rated current (C0091) or motor nominal speed (C0092) in the drive parameters, causing the drive to misinterpret actual motor load.
• Insufficient motor sizing for the application, where the required operating torque continuously demands current above the motor's continuous rating.

Klikk på steg for å spore fremgangen.

1. 1

   Measure the actual motor current (e.g., with a clamp meter on a motor phase) during continuous operation and compare to the motor nameplate rated current.

2. 2

   Verify the motor rated current (C0091) and motor rated speed (C0092) parameters in the drive match the motor nameplate exactly.

3. 3

   Extend acceleration and deceleration times (C0012, C0013) to reduce peak currents during transient operations.

4. 4

   Reduce the mechanical load on the motor if possible, or consider upsizing the motor/drive system for continuous torque requirements.

5. 5

   Monitor the drive's internal Ixt accumulation value (e.g., via a diagnostic parameter, if available) to track the thermal loading trend.