Motor Will Run But Speed Will Not Change - GE Fuji Electric AF-300ES Instructions Manual

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

Yes
Change the setting.
Yes
Is timer setting long?
No
Has end of the
pattern operation
Yes
been reached?
No
Is frequency
setting same for
Yes
each pattern?
No
Motor speed change is very small under these conditions:
1. Wrong setting of FC13 bias frequency, FC14 gain for frequency setting.
2. If using terminal 12, V1, and C1 check polarity inputs to insure they are correct and do not offset.
3. During torque limiting or current limiting with excessive load.
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The electric
motor will
run but the
speed will
not change.
Is max frequency
Yes
set to low?
No
Are the high limiter,
Yes
and low frequency
limiter operating?
No
Pattern
Determine which
frequency method
Operation
is active:
Keypad (FC 00)
•
Analog (FC 00)
•
Multi-step
•
Up/Down
•
Pattern Operation
•
(FC 65)
Multi-step
Up/Down
Is the wiring of
multi-step fre-
quency selection
terminals (X1, X2,
and X3) 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.
Keypad
Analog
No
Correct wiring.
No
Change the set
frequency.
No
There is the
possibility of
failure in the drive
or noise related
problems.
Contact GE Fuji
8-16
Will speed change by
pressing UP/DOWN key?
Will frequency setting signal
change (0-10V, 4-20mA)
No
Is the wiring between
No
Terminals 13, 12, 11, V1
and C1 correct?
Yes
Replace the frequency
setter, process signal,
or check for ground &
reference circuit.
Yes
No
Yes