Mitsubishi Electric EZMotion-NC E60 Series, Operation Manual

Page: 298 / 510

7. Diagnosis
7.9 Auxiliary Axis Parameter
I
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7.9.2 Backup
SRAM backup of the auxiliary axis parameters and absolute position restoration during drive unit
replacement are executed on the BACKUP screen.
Only execute the operations during drive unit replacement.
(1) Procedure during MR-J2-CT drive unit replacement
The following shows the procedure during MR-J2-CT drive unit replacement. The operation is
carried out on the BACKUP screen.
The absolute position of the current MR-J2-CT must be established first before carrying out this
operation.
(a) SRAM backup of the auxiliary axis parameters
The current drive unit data is backed up in the SRAM of the CNC when the drive unit is
replaced.
The following shows the procedure for SRAM backup of the auxiliary axis parameters.
Select the menu key
AUX-PRM
AUX-PRM and scroll the page with the page key to select the
following screens (9.11/11).
[BACKUP] ALARM/DIAGN 9. 11/11
AUX-PARA
#1
MR-J2-CT-> SRAM
#2 SRAM -> MR-J2-CT
ABS
POS.
#3 ABS POS RESTORE
#(1) (1) (Y)
BACKUP COMPLETE
AUX-PRM AUX-MON SUPPORT
NSK-TERMINAL
MENU
Input "(1) (a)" from the BACKUP screen. (a: axis No. (1 to 4))
After inputting, the message "CONTINUE Y/N" will appear for confirmation of the data backup.
The data is backed up in the SRAM only if "(Y)" is input.
The message " BACKUP EXECUTION " will appear when the backup operation is carried out.
The message "BACKUP COMPLETE" will appear when the backup operation is finished.
If MR-J2-CT is not connected, the message "E01 SETTING ERROR" will occur, and the data
will not be backed up.
After the procedure is finished, turn OFF the CNC and MR-J2-CT power supply, and replace
MR-J2-CT drive unit.
After replacing the MR-J2-CT drive unit, set the MR-J2-CT rotary switch to "7". Turn the CNC
and MR-J2-CT power supply ON, wait for the 7-segment display to change from dot display,
and then turn the power OFF. The auxiliary axis parameter data is written and the absolute
position restored after the axis is set with the rotary switch and the power is turned ON again.
(Note) Turning ON the power supply with the MR-J2-CT rotary switch set to "7" initializes the
parameters. If an drive unit with the absolute position established is replaced without carrying
out this operation, the machine position will be created with the old drive unit’s data.