Fuji Electric FVR-C11S-7EN Series - Page 75

7 Troubleshootin
g
7-10
FVR-C11S-EN
7
3) When motor stalls durin
g
acceleration
In the followin
g
cases, chan
g
e of motor speed is
also restricted.
1. Bias frequenc
y
(F18) settin
g
value is lar
g
e.
2. Si
g
nals are input from both control termi-
nals 12 and C1 and there is no si
g
nificant
chan
g
e in the added value.
(When F01 is 3)
3. Load is excessive and stall prevention
function is activated.
Motor stalls durin
g
acceleration
Acceleration time
settin
g
too short?
Yes
Prolon
g
time
settin
g
.
No
Moment of inertia
of motor or load
excessive?
Yes
Special
motor
in use?
Yes
Consult with
Fuji Electric.
No
No
Reduce moment
of inertia of load
or increase
inverter capacit
y
.
Motor
terminal volta
g
e
lowered?
Yes
Use thicker cable
for wirin
g
between inverter
and motor, or
shorten wirin
g
len
g
th.
No
Torque of load
excessive?
No
Settin
g
of torque
boost amount
correct?
No
Increase torque
boost amount.
Yes Yes
Reduce torque of
load or increase
inverter capacit
y
.
Probabl
y
fault
y
inverter or error
because of noise,
etc. Contact
Fuji Electric.