Phase Loss Phl - Delta VFD-VJ Series User Manual

5-8 Phase Loss (PHL)
Are main circuit power terminals R, S, and T all
Power supply suffers
phase loss
connected completely
Yes
Are all screws on terminal
plate tightened
Yes
Is voltage of the three phase
power supply unbalanced
No
It's likely hybrid servo controller
breaks down or malfunctions due
to noise. Please contact Delta for
assistance.
VFD-VJ Air Cooled | 5. Methods of Anomaly Diagnosis
No
No
Please check wiring and
Yes
5-19
Connect the thres
phases securely
Tighten all screws
power system for
abnormal behavior