– 74 –
No. Description of error detected Cause of occurrence expected Items to be checked
E733 Inverse rotation of motor • This error occurs when the motor is • Connection of the encoder of main shaft
running at 500 sti/min or more in the motor is wrong.
opposite direction of that of rotation • Connection for the electric power of main
indication during motor is running. shaft motor is wrong.
E799 Predetermined time for thread trimming • Thread trimming sequence control is • Check whether the machine head actually
sequence is exceeded not completed within the predetermined installed is different from the machine head
time (three seconds). selection.
• Check whether the actual motor pulley
diameter is different from the motor pulley
setting (effective diameter).
• Check whether the belt has slackened.
E808 Solenoid short circuit • Solenoid power does not become • Check whether the machine head cord
normal voltage. is caught in the pulley cover or the like.
E809 Holding motion failure • Solenoid is not changed over to • Check whether the solenoid is abnormally
holding motion. heated. (CTL circuit board asm. Circuit
is broken)
E810 Solenoid short-circuit •
When the short-circuited solenoid is desired
• Check whether the solenoid is short-
to be driven. circuited.
E811 Abnormal voltage • When voltage higher than guaranteed • Check whether the applied power voltage
one is inputted. is higher than the rated voltage + (plus) 10%
• 200V has been inputted to SC-922 of or more.
100V specifications. • Check whether 100V/200V changeover
• JA : 220V is applied to 120V box. connector is improperly set.
• CE : 400V is applied to 230V box. In the aforementioned cases, POWER
p.c.b is broken.
• When voltage lower than guaranteed • Check whether the voltage is lower than
one is inputted. the rated voltage - (minus) 10% or less.
• 100V has been inputted to SC-922 of • Check whether 100V/200V changeover
200V specifications. connector is improperly set.
• JA : 120V is applied to 220V box.
•Inner circuit is broken by the applied • Check whether fuse or regenerative
overvoltage. resistance is broken.
E906 Operation panel transmission failure • Disconnection of operation panel cord. • Check the operation panel connector
• Operation panel has broken. (CN38) for loose connection and
disconnection.
•Check whether the operation panel cord
has broken since the cord is caught in
the machine head.
E924 Motor driver failure • Motor driver has broken.
E942 Faulty EEPROM • Data cannot be written on the EEPROM. •Turn the power OFF.
To Next Page
Loading...
Need help?
General
