
7. TROUBLESHOOTING
B–63785EN/01
390
Machine absolute position data in the serial pulse coder is lost.
(This alarm is issued when the serial pulse coder has been replaced or
when the position feedback signal line of the serial pulse coder is
detached.)
The machine position must be recorded again by using the following
method:
1. Perform manual reference position return only for that axis for which
the alarm was issued. If another alarm is also issued, such that manual
reference positioning cannot be performed, change bit 5 of parameter
No. 1815 to 0, release that alarm, then perform manual reference
position return.
2. After performing reference position return, press the
RESET
key to
release the alarm.
Set the reference position without dogs to record the reference position.
The stop position at the reference position differs from the old stop
position. Change the grid shift amount in parameter No. 1850, and adjust
the stop position properly.
#7
1815
#6 #5
APCx
#4
APZx
#3 #2 #1 #0
APCx 0 : The position detector is an incremental pulse coder.
1 : The position detector is an absolute pulse coder.
APZx The reference position for the absolute pulse coder is:
0 : Not established.
1 : Established.
7.8
ALARM OT0032
(REFERENCE
POSITION RETURN
REQUEST)
Action
D When the reference
position return function
is provided
D When the reference
position return function
is not provided
D When the serial pulse
coder has been replaced
Related parameter