Delta BLD-E1 brushless DC motor drive BLD-E1 Series - Manual (Page 152)

| BLD-E1 Series
Revision May 2009, 00DE, V0.50 5-5
5.7 Keypad Display is Abnormal
Abnormal display or no display
Cycle power to br ushless DC
motor dr ive
No
Yes
Yes No
Yes
Display normal?
Br us hless DC motor dri ve
works normally
F ix c onnec tor and elimi nate noi se
Check if all connector s are c onnect
cor rectly and no noise is present
Br us hless DC motor dri ve has
malfunction. Please contac t DELTA.
5.8 Phase Loss (PHL)
Phase loss
No
No
Yes
Yes
Check wir ing at R, S and T terminals Correc t wiring
Check if the sc rews of ter minal s ar e tightened
No
Tighten all scr ews
Yes
Please check the wiring
and power system for
abnormal power
Maybe br ushless DC motor dr ive has malfunc tion or
misoperation due to noise. Pleas e contact DELTA.
Check if the input voltage of R, S , T is unbalanced