Mitsubishi FREQROL-SFJ - No Alarm Disply Appears, but Motor Rotates Slowly

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. 3
Checkup Remedy
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El
BSL setting.
I
interface.
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_ ~. . .._
Oriented spin- Oriented spindle stop sig-
t
(Turn off oriented
stop signal 'nal (ORA) is on.
f spindle stop signal.
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(2) No alarm disply appears,
but motor rotates slowly (accele-
ration is impossible),
or large sound arises in motor
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_-.
Cause
Checkup
Remedy
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Miswiring o!"
Check wire connection to
Correct or remedy
rr!f , : I, :‘
output terminals U, V and
the wiring.
W of FR-SFJ (phase sequen-
ce).
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---.-__ ._-_-.
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Input power j Check the input power sup-
Use the correct spe-
/ Supply (VOlt-
ply in all 3 phases.
cified power supply.
1 age) improper
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--j-
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1 Speed reference
Check if motor speed does
Remedy the external
1 signal input
! not increase in accordance
speed reference sig-
j from externai
1 signal source :
1
-- ~- --‘-t
~ Trouble with ’
/ motor built-in
,
/ encoder/CON2
/ cable or motor
built-in en-
with
speed reference signal. nal circuit.
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_---_.-. _-_
When motor shaft is turned
Check the motor
by hand with "ready;' signal
built-in encoder/
turned off,
speed display
CON2 cable.
by the LED readout is not
Replace the motor
in accordance with motor
buiit-in encoder.
/ coder ! shaft rotation.
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1
! Pin 2 and 3 of
j Check Pin 2 and 3 settings
j card SFJ-CA1
1 not‘set proper-
; 1Y
-wtiai~r-FR~SFJ is con-
nected to M30Q or not.
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Connected
Not
connected
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4
_.. ---..-
ggj?j:
Shows that pin
is set.
L
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