Mitsubishi Electric C70 Setup Manual page 601

MITSUBISHI CNC
Appendix 2 Explanation of Alarms
Alarm No.
Watchdog
88
The system does not operate correctly.
Investigation details
Check whether the servo or spindle
1
software version was changed recently.
2 Check the repeatability.
Check if there is any abnormality in the
unit's ambient environment.
3
(Ex. Ambient temperature, noise,
grounding)
(Note) For MDS-D-SVJ3/SPJ3 Series, "888" is displayed.
Alarm No.
Drive unit communication data error 1
8A
The communication data 1 between drive units exceeded the tolerable value in the communication between drive units.
Investigation details
Check if the error has occurred during high-
1
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)
Alarm No.
Drive unit communication data error 2
8B
The communication data 2 between drive units exceeded the tolerable value in the communication between drive units.
Investigation details
Check if the error was occurred during the
1
synchronous tapping.
2 Check the repeatability.
Check if there is any abnormality in the
unit's ambient environment.
3
(Ex. Ambient temperature, noise,
grounding)
584
Investigation results
The version was changed.
The version was not changed.
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.
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
Change software version back to the
original.
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.
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
SV SP