-67-
7-2
Other trouble
(1)
When motor does not rotate.
Note : Verify the function settings for the operation com-
mands and frequency setting values on the keypad
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 relay contacts
as appropriate.
Remedy wiring error.
Replace faulty switch
or relay.
Possibly of faulty In-
verter Contact
Saftronics
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 setting
lower than starting
frequency?
Does frequency set-
ting exceed starting
and stop frequency.
Is the operation
method the keypad
panel or input sig-
nal?
Alarm displayed on
keypad panel?
Motor does not
start.
Does charge lamp
light?
Forward or reverse
operation command
given?
Execute correct fre-
quency setting.
Does drive start
when UP key
pressed?
Press UP key and set
frequency.
Does motor run if
RUN key is pressed?
If no error is de-
tected, continue o p-
eration.
Remedy failed function
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
used.
Setting of torque
boost amount cor-
rect?
No
No
No
Probable faulty drive.
Contact
Saftronics
.
Drive output termi-
nals (U,V,W) sup-
plied with proper
voltage?
Load excessive?
Defective motor.
Yes
Yes
Yes
Yes
Yes
