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MITSUBISHI CNC
Appendix 2 Explanation of Alarms
Drive unit communication data error 1
Alarm No.
The communication data 1 between drive units exceeded the tolerable value in the communication between
8A
drive units.
Investigation details
Check if the error has occurred during
1
high-speed synchronous tapping.
2 Check the repeatability.
Check if there is any abnormality in the
unit's ambient environment.
3
(Ex. Ambient temperature, noise,
grounding)
Drive unit communication data error 2
Alarm No.
The communication data 2 between drive units exceeded the tolerable value in the communication between
8B
drive units.
Investigation details
Check if the error was occurred during
1
the synchronous tapping.
2 Check the repeatability.
Check if there is any abnormality in the
unit's ambient environment.
3
(Ex. Ambient temperature, noise,
grounding)
634
Investigation results
The error occurs during the
synchronous tapping.
The error does not occur during the
synchronous tapping.
The error is always repeated.
The state returns to normal once, but
occurs sometimes thereafter.
Take remedies according to the causes of the abnormality in the ambient
environment.
Investigation results
The error occurs during the
synchronous tapping.
Check if the error has occurred during
high-speed synchronous tapping.
The error is always repeated.
The state returns to normal once, but
occurs sometimes thereafter.
Take remedies according to the causes of the abnormality in the ambient
environment.
Remedies
[1]Check the tool.
[2]Adjust the tapping.
Check the investigation item No. 2.
Replace the drive unit.
Check the investigation item No. 3.
Remedies
[1]Check the tool.
[2]Adjust the tapping.
Check the investigation item No. 2.
Replace the drive unit.
Check the investigation item No. 3.
SV SP
SV SP
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Troubleshooting
