Chapter 5 Troubleshooting
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Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11
5-5
5.7 Keypad Display is Abnormal
Abnormal display or no display
Cycle power to AC motor drive
No
Yes
Yes
Yes
No
Display normal?
AC motor drive works normally
Fix connector and
eliminate noise
Check if all connectors are connect
correctly and no noise is present
AC motor drive has malfunction.
Please contact DELTA.
5.8 Phase Loss (PHL)
Phase loss
No
No
Yes
Yes
Check wiring at R, S and T terminals
Correct wiring
Check if the screws of terminals are tightened
No
Tighten all screws
Yes
Please check the wiring
and power system for
abnormal power
Maybe AC motor drive has malfunction or misoperation
due to noise. Please contact DELTA.
Check if the input voltage of R, S, T is unbalanced
Содержание AC Motor Drive VFD-E
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