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Mitsubishi Electric MELSEC Q Series User Manual page 257

Positioning module
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Error
Error
code
category
classification
(decimal)
74
ERR.2
80
81
82
Start error
ERR.1
83
84
Error
Error name
Near-point dog
signal ON at
start
READY signal
OFF at start
(PLC READY
signal OFF at
start)
BUSY signal ON
at start
STOP signal ON
at start
Outside the
stroke limit
range at start
OPR complete
signal ON at
start
Operation at the
Description
error occurrence
Near-point dog signal
(DOG) is on at the
start of OPR in the
near-point dog
method.
QD73A1 READY
signal (X11) or PLC
READY signal (Y2D)
is off at the start of
major positioning,
OPR, or JOG
operation.
An operation start is
attempted when
BUSY signal (X14) is
on.
An operation start is
attempted when Stop
The operation does
signal (Y27) is on.
not start.
An operation start is
attempted when the
workpiece is outside
the stroke limit range.
An OPR start is
attempted when OPR
complete signal (X13)
is on.
CHAPTER 14 TROUBLESHOOTING
Action
Return the workpiece to
a position away from
the near-point dog
using JOG operation or
major positioning, then
execute OPR.
Turn on PLC READY
signal (Y2D).
Make an interlock using
a sequence program so
that no operation starts
when BUSY signal
(X14) is on.
Turn off Stop signal
(Y27), and start the
operation again.
• Return the workpiece
to a position within
the stroke limit range
using JOG operation.
• Execute OPR.
• Set the workpiece to
a position within the
stroke limit range by
changing the current
value.
• OPR cannot be
started in succession
(only in the near-
point dog method).
• Move the workpiece
to the position before
the near-point dog
using JOG operation
or major positioning,
then start another
OPR.
255
14

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