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7 Troubleshooting
MITSUBISHI CNC
7.3.3 Troubleshooting for Each Warning No.
Warning No.
96
Scale feedback error
An excessive difference in feedback amount was detected between the main side encoder and the MPI scale in MPI scale
absolute position detection system.
Investigation details Investigation results Remedies SV SP
1
Check if there is any abnormality in the encoder's
ambient environment.
(Ex. Ambient temperature, noise, grounding)
Take remedies according to the causes of the abnormality in the ambient environment.
◯
2 Check the repeatability.
Occurs frequently. Replace the encoder.
◯◯
Is not repeated. Check the investigation item No. 1.
Warning No.
97
Scale offset error
An error was detected in the offset data that is read at the NC power-ON in MPI scale absolute position detection system.
Investigation details Investigation results Remedies SV SP
1
Check if there is any abnormality in the encoder's
ambient environment.
(Ex. Ambient temperature, noise, grounding)
Take remedies according to the causes of the abnormality in the ambient environment.
◯
2 Check the repeatability.
Occurs frequently. Replace the encoder.
◯◯
Is not repeated. Check the investigation item No. 1.
Warning No.
9B
Incremental encoder/magnetic pole shift warning
For the incremental encoder, an error was detected in the magnetic pole shift amount set in the magnetic pole shift amount
parameter "SV028".
Investigation details Investigation results Remedies SV SP
1
Check if there is any abnormality in the encoder's
ambient environment.
(Ex. Ambient temperature, noise, grounding)
Take remedies according to the causes of the abnormality in the ambient environment.
◯
2 Check the repeatability.
Occurs occasionally.
Execute magnetic pole detection control
again and reset SV028.
◯◯
Is not repeated. Check the investigation item No. 1.
Warning No.
9E
Absolute position encoder: Revolution counter error
An error was detected in the revolution counter of the absolute position encoder. The absolute position data cannot be
compensated.
Investigation details Investigation results Remedies SV SP
1
Check if there is any abnormality in the encoder's
ambient environment.
(Ex. Ambient temperature, noise, grounding)
Take remedies according to the causes of the abnormality in the ambient environment.
◯
2 Check the repeatability.
Occurs frequently. Replace the encoder.
◯◯
Is not repeated. Check the investigation item No. 1.
