Delta VP3000 Series - Page 430

Chapter 8 Troubleshooting｜VP3000
421
ID No.
Warning Name
Descriptions
26
Output U phase loss
warning
(OPHL)
The drive output U phase loss
Action and Reset
Action Condition
Pr. H3-02
Action Time
Pr. H3-03
Warning Setting Parameter
Pr. H3-05
0: Warning & continue OPER
1: Fault & Ramp to Stop
2: Fault & Auto-Decel
3: Fault & coast to stop
4: Fault & by Quick Stop Time
Reset Method
If Pr. H3-05 is set to 0, the OPHL warning automatically clears after the drive
stops.
Reset Condition
No
Record
No
Cause
Corrective Actions
Unbalance 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, 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 OPHL error still shows on the display, return to the
factory for repair.
If capacity of the drive is larger
than the motor
Choose the matches capacity of the drive and motor.