Chapter 13 Warning CodesC2000 Plus
ID No. Display on LCD Keypad Warning Name Description
28
Output phase loss
(OPHL)
Output phase loss
Action and Reset
Action condition Pr.06-47
Action time N/A
Warning setting parameter
Pr.06-45
0: Warn and keep operating
1: Fault and ramp to stop
2: Fault and coast to stop
3: No warning
Reset method
Pr.06-45 is set to 0, the OPHL warning automatically clears after the drive stops.
Reset condition N/A
Record N/A
Cause Corrective Actions
Unbalanced three-phase
impedance of the motor
Replace the motor.
Check if the wiring is incorrect
Check the cable.
Replace the cable.
Check if the motor is a single-
phase motor
Choose a three-phase motor.
Check if the current sensor is
broken
Check if the control board cable is loose. If yes, reconnect the cable and run
drive to test. If the error still occurs, return to the factory for repair.
Check if the three-phase current is balanced with a current clamp meter. I
current is balanced and the OPHL error still shows on the display,
factory for repair.
If capacity of the drive is larger
than the motor
Choose the matches capacity of the drive and motor.