
B–62835EN/01
8.TROUBLESHOOTING
317
Communication error has generated in serial spindle
Improper connection between the control unit and the serial spindle. The
following reason is considered.
Optical I/O Link
adaptor
Optocal cable
α series
spindle
amplifier
Power Mate
Power Mate
Spindle
amplifier
JA11
JA11
D Spindle module is faulty. (Bold line in the figure below indicates
module mounting position.)
D The cable between the control unit and spindle amplifier is broken or
disconnected.
D A cable between the control unit and optical I/O link adapter is
disconnected or short–circuited.
D Optical I/O link adapter is faulty.
D Optical cable is disconnected.
D Serial spindle amplifier is faulty.
<Location of spindle module> Power Mate–D
(1)(2)(3) (4)(5) (6) (7) (1) (2) (3)
(2) Spindle module
A20B–2900–0850
(2) Memory module
A20B–2902–0221
to 0255
A02B–0166–B001
A02B–0166–B520
A02B–0166–B501, B502
A02B–0166–B531
8.26
ALARM 749
(SERIAL SPINDLE
COMMUNICATION
ERROR)
Causes and Remedies