I x t Overload (Cumulative Overcurrent)

What does OC5 mean?

This fault indicates a cumulative overcurrent condition, often resulting from frequent and prolonged acceleration processes or continuous operation with the motor current exceeding 105% of the drive's rated current. The drive's internal I x t model has determined that the thermal stress on the inverter is excessive. Persistent I x t overload can lead to premature failure of the drive's power components.

Complete Troubleshooting Guide

1. 1

   Review the application's operating cycle for excessively frequent starts/stops or long acceleration times and adjust if possible.

2. 2

   Verify that the drive is correctly sized for the motor and the application's continuous and peak current demands.

3. 3

   Consider a larger drive or a different motor/gearbox combination if the current demands consistently exceed the drive's rating.