ocn on DELTA inverters: Over-current at constant speed

DELTA inverters: MS300

Disconnect the supply and wait for the capacitors to discharge before opening the inverter or touching its terminals.

Common causes

1. 1Sudden load increase or jam
2. 2Short at the output
3. 3Drive too small for the load

Try first

1. 1Check the machine for jams
2. 2Check the cable and motor insulation
3. 3Measure the running current; if above the drive rating, choose a larger drive