My AC drive has stopped with the code OI according to the manual this is a Instantaneous over current trip Excess current flowing in the IGBT inverter bridge caused by a short circuit ,low impedance ,earth fault or excessive shock load this happens with machinery disconnected so do I take it that the bridge has failed and that I should either send away for repair or replace myself I should add it didn't fail under load
I am familiar with switch power supply's and repairing looking at the board design it seem very similar
Any help
Thanks Andrew Bishop