3.TROUBLESHOOTING AND ACTION TROUBLESHOOTING B-65285EN/03
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3.4.53 Other Alarms
(1) If the SPM status display is 4, 11, 30, 33, 51, 57, 58, b1, b2, or b3
This status display means that an alarm condition occurred in the
PSM. Check the status display of the PSM, and see Section 2.3.
(2) About CNC alarms 756 and 766 (abnormal axis number)
These alarms can be issued only when the Dual Check Safety
function is in use. If this alarm is issued, check that K76 shown
below is attached to the JA7A connector of the second spindle.
K76 is unnecessary if only the first spindle is used. If the wiring is
normal, replace the SPM control printed-circuit board.
SPM
(First spindle)
CNC
JA41 JA7B JA7A
SPM
(Second
spindle
JA7B
K76
JA7A
X2NDSP
0V
(15)
(13)
K76
20-pin half-pitch
connector
Details of K76