Motor Will Run But Speed Will Not Change; Motor Will Stall During Acceleration - GE Fuji Electric AF-300 MICRO-SAVER II Instructions Manual

( 10 ) Motor will run but speed will not change.

The electric
motor will
run but the
speed will
not change.
Is max frequency (F_03)
Yes
set too low?
No
Are the high limiter (F_36),
Yes
Change or check the setting.
and low frequency limiter
(F_37) operating?
No
Determine which
frequency method is
active:
Keypad (F_ 01) = 0
•
Analog (F_ 01) = 1
•
Multistep (F_21~F_27)
•
Multistep
Is the wiring of
multistep frequency
selection terminals
X1, X2, X3 and X4
correct?
Yes
Do the set
frequencies of
each selection
step change?
Yes
Is the setting of the
acceleration and
deceleration time
excessively long?
Yes
Change the setting
to the time suitable
for the load.
Motor speed change is very small under these conditions:
Wrong setting of F_34 bias frequency, F_35 gain for frequency setting.
If using terminal 12, and C1 check polarity inputs to insure they are correct and do not offset.
During torque limiting or current limiting with excessive load.
8-10
Yes
Keypad
Will speed change by
No
pressing key?
Analog Will frequency setting signal Yes
change (0-10V or 4-20mA)
No
Is the wiring between
No
No
Correct wiring. Terminals 13, 12, 11,
and C1 correct?
Yes
Replace the frequency
setter, process signal,
No Change the set
or check for ground &
frequency.
reference circuit.
Possible Drive failure or
No
malfunction due to
electrical noise. Contact
GE Fuji Electric.

( 11 ) Motor will stall during acceleration.

The motor will stall
during acceleration
Yes Increase the set
Is the acceleration
time setting short? time.
No
Is Wk 2 of the motor
Yes
Is a special
and/or load
motor in use?
excessive?
No
Correct the wire size
between the Drive
Is the motor terminal
and the motor or
voltage lower than
Yes
shorten the wiring
output terminal
distance.
voltage?
No
Is the torque boost
Is the load torque No
high? set correctly?
Yes
Reduce the load
Possible Drive failure or
torque or use a
malfunction due to
Drive with a higher
electrical noise. Contact
capacity.
GE Fuji Electric.
Yes
Contact GE Fuji Electric.
No
Reduce the load Wk 2 or use a
Drive with higher capacity.
Increase or de-
No
crease the torque
boost setting.
Yes
8-11