Delta MH300 Series - Page 801

Chapter 14 Fault CodesMH300
14-74
ID No. Display Fault Name Description
82
Output phase loss
U phase (oPL1)
U phase output phase loss
Action and Reset
Action condition Pr.06-47
Action time
Pr.06-46
Pr.06-48: Use the setting value of Pr.06-48 first. If DC braking function
activates, use that of Pr.06-46.
Fault 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 Manual reset
Reset condition Immediately reset
Record When Pr.06-45=1 or 2, OPL1 is a “Fault”, and the fault is recorded.
Cause Corrective Actions
Unbalanced three-phase
impedance of the motor
Replace the motor.
Check if the wiring is incorrect.
Check the cable and replace it if necessary.
Check the motor’s internal wiring. If the fault still exists, replace the motor.
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 fault still exists, return to the factory for repair.
Check if the three-phase current is balanced with
a current clamp meter.
If the current is balanced and the oPL1 fault still ex
ists, return to the
factory for repair.
Check if the drive capacity is
larger than the motor capacity.
Choose the drive that matches the motor capacity.