Fuji Electric FVR-C11S-7EN Series - Page 73

7 Troubleshootin
g
7-8
FVR-C11S-EN
7
Execute correct
frequenc
y
settin
g
.
Yes
Are the frequenc
y
limiter (Hi
g
h) and the
frequenc
y
settin
g
lower
than startin
g
frequenc
y
?
No
Defective motor.
Inverter output terminals
(U,V,W) supplied with
proper volta
g
e?
No
Probabl
y
fault
y
inverter.
Contact Fuji Electric.
No Yes
Load excessive?
Yes
Motor wirin
g
correct?
No
Remed
y
wirin
g
error.
Yes
Settin
g
of torque boost
amount correct?
Yes
Load is excessive, re-
sultin
g
in motor lock.
Li
g
hten load. Also,
check that the brake is
adequatel
y
released if
mechanical brake is
used.
No
Raise torque boost
amount.
The motor does not rotate if the followin
g
com-
mands are
g
iven.
1. An operation command is
g
iven while
coast-to-stop command is output to the
control terminals.
2. Both operation command FWD and REV
are input.
Yes
Yes
(
Continued
)