OrP

OrP

OrP on DELTA inverters: Input phase loss

DELTA inverters: MS300

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

Common causes

  1. Missing phase or unbalanced voltage
  2. Damaged fuse or supply breaker
  3. Loose supply terminal

Try first

  1. Measure between the three phases
  2. Check the fuses and breaker before the drive
  3. Tighten R, S, T
Not solved?Ask Electro for a technician or a larger inverterAll DELTA codes