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The motor does not rotate if the following commands are given.
1) An operation command is given while coast-to-stop command is output to the control terminals.
2) Both operation command FWD and REV are input.
(2) When motor rotates but the speed does not change.
In the following cases, change of motor speed is also restricted.
1) Bias frequency (F18) setting value is large.
2) Signals are input from both control terminals 12 and C1 and there is no significant change in the added value.
(When F01 is 3)
3) Load is excessive and stall prevention function is activated.
Keypad panel operation
No
No
No
No
No
No No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Built-in POT (VR)
Motor rotates but speed
does not change.
Maximum frequency
setting too low?
Upper/lower frequency
limiter activating?
Which frequency setting
method is in use: built-in
POT (VR), keypad panel,
analog signal, or
multistep frequency?
External wiring con-
nections between con
trol
terminals X1,X2,X3 -
CM connected correctly?
Frequencies for each
multistep selecting fre-
quency different?
Setting of accelera-
tion/deceleration time
excessively long?
Change setting to cor
rect
acceleration/deceleration
time for load.
Probable faulty
drive or error be-
cause of noise, etc.
Contact GE Fuji.
Change the setting
frequency.
Remedy wiring error.
Does the speed
change when UP or
DOWN key de-
pressed?
Can the frequency
setting signal (0 to
+10Vdc, 4 to
20mAdc) be
changed?
External wiring con-
nections between
control terminals
13,12,C1 - 11 cor-
rect?
Replace faulty fre-
quency setting
POT(VR) or signal
converter as ap-
propriate.
Change the setting.
Multistep frequency
Analog signal
Does speed change when
freq. setting POT(VR)
turned clockwise or counter
clockwise?
No
Yes
Yes