Fuji Electric FVR-C11S-7EN Series - 7 Troubleshootin G; Other Trouble

7-7 7 Troubleshootin
g
FVR-C11S-EN
7
7-2 Other trouble
1) When motor does not rotate.
Note: Verif
y
the function settin
g
s for the operation commands and
frequenc
y
settin
g
values on the ke
y
pad panel.
Motor does not start.
Does char
g
e lamp li
g
ht?
No
Are circuit breaker and
ma
g
netic contactor on
power suppl
y
side
switched ON?
No
Investi
g
ate cause of
failed switchin
g
, and
turn them ON if there is
no problem.
Yes Yes
Remed
y
failed function
and start after resettin
g
alarm.
Yes
Alarm displa
y
ed on
ke
y
pad panel?
Volta
g
e of main power
suppl
y
input terminals
normal?
No
Check for failures such
as low volta
g
e,
phase failure, loose
connection, and poor
contact, and remed
y
accordin
g
l
y
.
No
If no error is detected,
continue operation.
Is the operation method
the ke
y
pad panel or
input si
g
nal?
Possibl
y
of fault
y
inverter.
Contact Fuji Electric.
Yes
Does motor run if RUN
ke
y
is pressed?
No
Forward or reverse
operation command
g
iven?
No
External wirin
g
between
control circuit terminals
FWD, REV - P24/CM
connected correctl
y
?
Yes
Replace fault
y
switch or
rela
y
.
No
Press UP ke
y
and set
frequenc
y
.
Remed
y
wirin
g
error.
Yes
Does inverter start when
UP ke
y
pressed?
No
Does frequenc
y
settin
g
exceed startin
g
and
stop frequenc
y
.
No
Settin
g
of built-in
POT (VR) and
connections of external
circuit wirin
g
between
control circuit terminals
13,12,11,C1 or X1, X2,
X2 - P24/CM correct?
Yes
Replace fault
y
frequenc
y
settin
g
POT (VR), si
g
nal
converter, switch,
or rela
y
contacts as
appropriate.
No
Yes
Ke
y
pad
panel
Input
si
g
nal
Yes
Yes
No
No
Yes
Yes
(
Continued
)