GE Industrial Solutions AF-300E$ - Manual (Page 111)

8-16
( 12 ) Motor will run but speed will not change.
The electric
motor will
run but the
speed will
not change.
Do the set
frequencies of
each selection
step change?
Is the setting of the
acceleration and
deceleration time
excessively long?
Is the wiring of
multi-step fre-
quency selection
terminals (X1, X2,
and X3) correct?
Change the setting
to the time suitable
for the load.
Correct wiring.
Change the set
frequency.
Will frequency setting signal
change (0-10V, 4-20mA)
Will speed change by
pressing UP/DOWN key? Keypad
Is frequency
setting same for
each pattern?
Has end of the
pattern operation
been reached?
Is timer setting long?
Change the setting.
Yes
Yes
Yes
Yes
Yes
No
There is the
possibility of
failure in the drive
or noise related
problems.
Contact GE Fuji
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.
Yes
No
Determine which
frequency method
is active:
• Keypad (FC 00)
• Analog (FC 00)
• Multi-step
• Up/Down
•
Pattern Operation
(FC 65)
Are the high limiter,
and low frequency
limiter operating?
Is max frequency
set to low?
Is the wiring between
Terminals 13, 12, 11, V1
and C1 correct?
Replace the frequency
setter, process signal,
or check for ground &
reference circuit.
No
No
Multi-step
Up/Down
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Analog
No
No
No
Pattern
Operation
No