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Error code
Description of error
E811
Over-voltage
E813
Low voltage
E815
Regenerative resistor is
not connected
E900
Protection of the main
shaft motor against IPM
overcurrent
E902
Main shaft overcurrent
E903
85-V power supply fault
E904
24-V power supply fault
E910
The presser motor origin
retrieval error
E912
Main shaft motor speed
detection error
E915
Failure of communication
with operation panel
E918
Main PCB temperature
error
E922
Main shaft control failure
E924
Motor driver fault
E946
Machine-head EEPROM
write error
E955
Current sensor fault
E961
Cloth puller presser motor
deviation error
E962
Presser motor deviation
error
E963
IPM temperature error
E967
Main shaft motor tempera-
ture fault
Cause
• In the case a voltage that is
equal to or more than the guar-
anteed voltage is input.
• In the case a voltage of 400 V is
applied to the box of "CE: 230
V".
• In the case a voltage that is
equal to or less than the guar-
anteed voltage is input.
• In the case the internal circuit
has broken due to the applica-
tion of over-voltage.
• In the case the regenerative
resistor is not connected.
• Main shaft motor maloperation.
• In the case the 85-V voltage
is not properly output.
• In the case the 24-V voltage
is not properly output.
• In the case the presser motor
has failed to return to its ori-
gin.
• In the case the main shaft
motor runs at a speed that
exceeds the assumed speed.
• In the case the operation panel
connector is not inserted prop-
erly.
• The temperature of the CTL
PCB is excessively high.
• In the case the main shaft fails
to operate as assumed.
• In the case the motor driver has
broken.
• The machine head PCB is not
properly connected.
• Main shaft motor failure
• Current sensor failure.
• Load applied to the cloth puller
presser motor is too large for the
motor to operate.
• In the case the presser fails to
operate because of an exces-
sive load.
• The temperature of the CTL
PCB is excessively high.
• Load applied to the main shaft
motor is excessively large.
– 67 –
Item to be checked
• Check whether the supply voltage of "rated
supply voltage ±10 % or more" is applied.
In the above-described cases, the power PCB
has broken.
• Check whether the supply voltage of "rated
supply voltage -10 % or less" is applied.
In the above-described cases, the power PCB
has broken.
• Check whether the regenerative resister
is connected to the regenerative resistor
connector (CN11).
• Check whether the motor is faulty
• Check the F2 fuse.
• Check whether the presser setting is
correct (memory switch No. 23).
• Check whether the presser motor origin
has been correctly adjusted.
• Check whether connection encoder wire
of the main shaft motor is correct.
• Check whether connection of the main
shaft motor wire is correct.
• Check whether CN64 of the CTL PCB or
CN200 of the panel is connected properly
or whether the cable has broken.
• Check the connector CN32 for looseness of
slip-off.
• Check whether the main shaft motor has
short-circuited.
• Check whether the cloth puller presser motor
runs smoothly.
• Check whether the presser motor runs
smoothly.
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