
B-65285EN/03 TROUBLESHOOTING 3.TROUBLESHOOTING AND ACTION
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3.4.50 Alarm Code b0
An error occurred in communication between amplifier modules (SPM,
SVM, and PSM).
Troubleshooting when this alarm is issued
(1) If this alarm is issued immediately after the power supply of CNC
is turned on
(a) Check the way the connectors are coupled.
Normally, CXA2A and CXA2B must be coupled.
(b) The cable is defective.
Check the connection pin number. If there is any problem,
correct it.
Alternatively, replace the cable.
(c) The SPM, SVM, or PSM is defective.
Replace the SPM, SVM, or PSM. Alternatively, replace the
SPM, SVM, or PSM control printed-circuit board.
3.4.51 Alarm Codes C0,C1, and C2
An error occurred in serial communication data between the CNC and
spindle amplifier module.
Troubleshooting when this alarm is issued
(a) The SPM is defective.
Replace the SPM or SPM control printed-circuit board.
(b) The CNC is defective.
Replace the board or module related to the serial spindle.
3.4.52 Alarm Code C3
In spindle switching, a mismatch is found between the switching
request signal (SPSL) and the internal status of the motor/spindle
sensor signal switching circuit (submodule SW).
Troubleshooting when this alarm is issued
The submodule SW (SSW) is defective.
Replace the submodule SW (SSW).