Motor Cannot Run - Delta Electronics AC Motor Drive VFD-E User Manual

Chapter 5 Troubleshooting|

5.9 Motor cannot Run

Motor cannot run
Reset after clearing
fault and then RUN
It can run when
no faults occur
Press RUN key to
check if it can run
Press UP key to
set frequency
Yes
Press UP to
check if motor
can run
No
Modify frequency
setting
Motor has malfunction
No
If load is too large
Yes
Check if the setting
of torque
compensation
is correct
No
Increase the setting of
torque compensation
5-6
Check
KPE-LE02 for
normal display
Yes
Yes
Check if there is any
fault code displayed
No
Input "RUN"
command
by keypad
Yes
No
Check if input FWD
or REV command
Yes
No
Set frequency or not
Yes
if upper bound freq.
and setting freq. is
lower than the min.
output freq.
No
Check if there is any
output voltage from
terminals U, V and W
Yes
Yes
Check if motor
connection
is correct
Yes
Motor is locked due to large load, please reduce load.
For example, if there is a brake, check if it is released.
Check if non-fuse
No
breaker and magnetic
contactor are ON
Yes
Check if input
voltage is normal
Yes
Maybe AC motor drive has malfunction or misoperation
No
due to noise. Please contact DELTA.
Check if the wiring
No
of terminal FWD
and between
REV-DCM is correct
No
No
Correct connection
No
Check if the parameter
setting and wiring of
analog signal and
multi-step speed
are correct
No Maybe AC motor drive has malfunction.
Please contact DELTA.
No
Connect correctly
Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11
No
Set them to ON
Check if any faults
No
occur, such as
Lv, PHL or
disconnection
Yes
Change switch or relay
Change defective
Yes
potentiometer and
relay