Delta MH300 Series - Page 675

Chapter 13 Warning Codes|MH300
13-26
ID No. Display Warning Name Description
28
Output phase loss
(OPHL)
Output phase loss
Action and Reset
Action condition Pr.06-47
Action time N/A
Warning treatment parameter
Pr.06-45
0: Warn and continue operation
1: Fault and ramp to stop
2: Fault and coast to stop
3: No warning
Reset method
If Pr.06-45 is set to 0, the OPHL warning automatically clears aft
er 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 the drive to test.
If the error still occurs, send the drive back to the factory for repair.
Check if the three-phase current is balanced with a current clamp meter.
I
f the current is balanced and the OPHL error still shows on the display,
send the drive back to the factory for repair.
Check if the drive capacity is
larger than the motor capacity.
Choose the drive that matches the motor capacity.