Mitsubishi Electric MELSEC Q Series User Manual page 258

Error
Error
code
category
(decimal)
Start error 85
87
90
Operation
error
91
92
256
Error
Error name
classification
ERR.1 Restart error
Movement
outside the
ERR.1
stroke limit
range
Servo READY
OFF while BUSY
Upper limit
ERR.2 signal OFF while
BUSY
Lower limit
signal OFF while
BUSY
Operation at the
Description
error occurrence
Speed-position mode
restart signal (Y26)
was turned on when
positioning was
complete in the
speed-position control
The operation does
switch mode.
not start.
Speed-position mode
restart signal (Y26)
was turned on in the
position control mode.
A movement amount
change was
The movement
attempted with a value
amount does not
that moves the
change.
workpiece outside the
stroke limit range.
Servo READY signal
(READY) turned off
The operation runs
during major
freely.
positioning, OPR, or
JOG operation.
Upper limit signal
(FLS) turned off during
major positioning,
OPR, or JOG
The operation
operation.
decelerates and
Lower limit signal
stops.
(RLS) turned off
during major
positioning, OPR, or
JOG operation.
Action
Start operation using
Forward start signal
(Y22) or Reverse start
signal (Y23).
Start operation using
Absolute positioning
start signal (Y21),
Forward start signal
(Y22), or Reverse start
signal (Y23).
Set movement amount
so that the workpiece is
positioned within the
stroke limit range after
the move.
Check the drive unit,
and turn on Servo
READY signal
(READY).
Return the workpiece to
a position within the
stroke limit range using
JOG operation.