Yaskawa YASNAC PC NC Maintenance Manual - Manual (Page 45)

PC NC Maintenance Manual Chapter 4: Troubleshooting
4-24
(e) Axis interlock is input
Check the bit status on the I/O monitor screen. If “O”, the
corresponding axis cannot move.
(f) Machine lock is ON
• Even when the machine lock function is ON, position dis-
play changes. Check the input of the machine lock switch
(I/O monitor, 3006 D5 = 0). If “1”, the axes do not move.
• Check the internal toggle switch (parameter pm0000 D1 =
0). If “1”, the axes do not move.
(5) Manual Reference Point Return is Incorrect
The following explanation is given assuming that jog and rapid
traverse are executed correctly.
(a) Manual reference point return signal is not input
Check the I/O monitor #3007 D0. The status must be” 1”.
Otherwise, the axis continues moving to OT at the same fee-
drate even if it reaches point A.
(b) Jog or rapid traverse mode is not selected.
I/O monitor #3000 D0 or D1 must be”1”.
(c) Deceleration limit switch signal is not input.
Check I/O monitor #3073 DO to D4 while moving an axis at a
slow feedrate such as in jog operation.
#3078
D
0
= l 1st axis
D
l
= l 2nd axis
D
2
= 1 3rd axis
D
3
= 1 4th axis
D
4
= 1 5th axis