Delta MH300 Series - Page 667

Chapter 13 Warning Codes|MH300
13-18
ID No. Display Warning Name Description
19
Phase loss
(PHL)
Input phase loss warning
Action and Reset
Action level One of the phases outputs less than Pr.06-47
Action time Pr.06-46
Warning setting parameter
Pr.06-45 Output Phase Loss Detection Action (OPHL) =0
0: Warn and continue operation
Reset method “Warning” automatically clears when the drive stops
Reset condition After the drive stops
Record N/A
Cause Corrective Actions
Phase loss of the input power Verify the wiring of the main circuit.
Single phase power input on a
three-phase model
Use the model with voltage that matches the power.
The power voltage has
changed
If the power of main circuit works well, check if the MC of the main circuit
is broken.
Cycle the power after verifying the power is normal. If PHL
still occurs,
return to the factory for repair.
Loose wiring terminal of input
power
Tighten the terminal screws with the torque listed in the user manual.
Check if the input cable of
three-phase power is broken
Make sure the wiring is correct.
Replace the broken part of the cable.
Unbalanced three-phase of the
input power
Check the status of three-phase power.