Mitsubishi Electric MDS-E Series Instruction Manual page 444

MDS-E/EH Series Instruction Manual
7 Troubleshooting
Alarm No.
Sub side encoder cable error
81
The cable type of machine side encoder does not match the encoder specifications set by the parameter.
Investigation details
Check if the below parameters match the
connected encoder and cable.
1
Servo: SV025
Spindle: SP031
Alarm No.
Drive unit communication error
87
The communication frame between drive units was aborted.
Investigation details
Check the connection of the optical communication
1
cable between drive units.
2 Check the repeatability.
Alarm No.
Watchdog
88
The system does not operate correctly. LED display is fixed as "88".
Investigation details
Check whether the servo or spindle software
1
version was changed recently.
2 Check the repeatability.
Check if there is any abnormality in the unit's
3 ambient environment.
(Ex. Ambient temperature, noise, grounding)
(Note) For MDS-EJ/EJH 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-speed
1
synchronous tapping.
2 Check the repeatability.
Check if there is any abnormality in the unit's
3 ambient environment.
(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
3 ambient environment.
(Ex. Ambient temperature, noise, grounding)
Investigation results
The encoder does not match the
specifications.
The parameter is not correct.
There is no problem with the selection of the
encoder and cable.
Investigation results
The cable and connector were loose.
The cable and connector were not loose.
The error is always repeated (in high-speed
synchronous tapping).
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.
413
Remedies
Replace the encoder.
Set the parameters so that they meet the
machine side encoder.
<Servo:SV025>
- Rotary
Pulse 2xxx
Serial 6xxx
- Scale
Pulse 8xxx
Serial Axxx
<Spindle:SP031>
Pulse 4200
Serial 6200
Replace the encoder or cable.
Remedies
Connect again so as not to be loosened.
Replace the cable.
Check the investigation item No. 2.
Replace the servo drive or spindle drive unit
that is used for high-speed synchronous
tapping.
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
◯ ◯
◯ ◯
◯ ◯
SV SP
◯ ◯
◯ ◯
◯ ◯
SV SP
◯ ◯
◯ ◯
◯ ◯
IB-1501229-F