Mitsubishi Electric MELSERVO-J3 Series Instruction Manual page 674

16. INDEXER POSITIONING OPERATION
Name
Display
A90 Home position
return incomplete
Definition
Positioning
1. Positioning operation was performed
operation was
without home position return.
performed without
home position
return.
Home position
2. Home position return speed could not be
return ended
decreased to creep speed.
abnormally.
3. Limit switch was actuated during home
position return starting at other than
position beyond dog.
Home position
4. Indexer JOG operation (in automatic/
return is
manual operation) was executed without
incomplete.
home position return.
5. The operation method (parameter
No.PA01), electronic gear (parameter
No.PA06 and PA07), station No. direction
selection (parameter No.PA14), or
number of stations/rotation (parameter
No.PC46) was changed.
Positioning 1. Positioning operation was performed
operation was without home position setting.
performed without
home position
setting.
Home position 2. Home position return speed could not be
setting ended decreased to creep speed.
abnormally. 3. Limit switch was actuated during home
position setting starting at other than
position beyond dog.
Operation was 4. Voltage drop in encoder
performed without (Battery is disconnected.)
making home
5. Battery voltage low
position setting
6. Battery cable or battery is faulty.
while an absolute
position erase
(A25) is being
occurred.
Home position 7. Indexer JOG operation (in automatic/
setting is manual operation) was executed without
incomplete. home position setting.
8. The operation method (parameter
No.PA01), electronic gear (parameter
No.PA06 and PA07), station No. direction
selection (parameter No.PA14), or
number of stations/rotation (parameter
No.PC46) was changed.
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Cause
Perform home position return.
Check home position return
speed/creep speed/moving
distance after proximity dog.
Perform home position return.
This warning is automatically
cleared after home position return
is executed.
Perform home position setting.
Check home position return
speed/creep speed/moving
distance after proximity dog.
Connect the battery and make
home position setting again.
Change the battery.
Always make home position
setting again.
Perform home position setting.
This warning is automatically
cleared after home position return
is executed.
Action