Keypad Display Is Abnormal; Phase Loss (Phl) - Delta Electronics AC Motor Drive VFD-G User Manual

5.7 Keypad Display is Abnormal

Abnormal display or no display
Cycle power to AC motor drive
Display normal?
AC motor drive works normally

5.8 Phase Loss (PHL)

Check wiring at R, S and T terminals
Check if the screws of terminals are tightened
Check if the input voltage of R, S, T is unbalanced
Maybe AC motor drive has malfunction or misoperation
due to noise. Please contact DELTA.
Revision July 2008, EG03, SW V1.06
Yes
No
Yes
Phase loss
Yes
Yes
No
Chapter 5 Troubleshooting |
Fix connector and
No
Check if all connectors are connect
correctly and no noise is present
Yes
AC motor drive has malfunction.
Please contact DELTA.
No
Correct wiring
No
Tighten all screws
Yes
Please check the wiring
and power system for
abnormal power
eliminate noise
5-5