7-2 Other trouble
(1) When motor does not rotate.
Note : Verify the function settings for the operation com-
mands and frequency setting values
panel.
Check for failures such
as low voltage, phase
failure, loose connec-
tion, and poor contact,
and remedy accord-
ingly.
No
No
Yes
Yes
No
No
No
No
No
Yes
Yes
Yes
Yes
No
No
No
No
No
External wiring be-
tween control circuit
terminals FWD, REV -
CM connected cor-
rectly?
Replace faulty fre-
quency setting POT
(VR), signal converter,
switch, or re
as appropriate.
Remedy wiring error.
Replace faulty switch
or relay.
Possibly of faulty In-
verter Contact GE Fuji.
Investigate cause of
failed switching, and
turn them ON if there is
no problem.
Are circuit breaker and
magnetic contactor on
power supply side
switched ON?
Voltage of main power
supply input terminals
normal?
Setting of built-in POT
(VR) and connections
of external circuit wir-
ing between control
circuit terminals
13,12,11,C1 or X1, X2,
X3 - CM correct?
Are the frequency
limiter (High) and
the frequency set
lower than starting
Does frequency set-
ting exceed starting
and stop frequency.
Is the operation
method the keypad
panel or input sig-
nal?
keypad panel?
start.
light?
Forward or reverse
operation command
given?
Execute correct fre-
quency setting.
Does drive start
when UP key
pressed?
frequency.
Does motor run if
RUN key is pressed?
If no error is de-
tected, continue op-
eration.
and start after reset-
ting alarm.
Input signal Keypad panel
Yes
Yes
Yes
Yes
Yes
Yes
No
Raise torque boost
amount.
No
Remedy wiring error.
Motor wiring cor-
rect?
Load is excessive, resulting in motor lock.
Lighten load. Also, check that the brake is
adequately released if mechanical brake is
Setting of torque
boost amount cor-
rect?
No
No
No
Probable faulty drive.
Contact GE Fuji.
Drive output termi-
nals (U,V,W) sup-
plied with proper
Load excessive?
Defective motor.
Yes
Yes
Yes
Yes
Yes