Mitsubishi Electric MELDAS 600M Series Instruction Manual page 474

3.4 Axis errors (AX
No.
AX0021 Absolute
AX0022 Abs posn
AX0024 Abs posn ref
AX0051 Synchronous
AX0052 No
AX0101 H/W stroke end
AX0102 S/W stroke end
AX0103 Dog overrun
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Appendix 3. Alarm Messages
)
Message
An error occurred (the absolute
position lost position was lost) as a result of
checking the absolute position
data as follows when the power
was turned ON.
The machine moved over the
tolerance amnt allowable movement amount with
over the power OFF.
Allowable movement amount >
(absolute position when the power
is turned ON - absolute position
when the power is turned OFF)
The absolute position reference
set incomplete point has not been set.
During synchronous control, the
error excessive synchronization error of the
master axis and slave axis
exceeded the allowable value.
Synchronous control was
synchronous commanded though the
CTRL spec synchronous control specifications
are not provided.
An axis exists at its stroke end,
axis exists and the stroke end function is
validated (the input signal is OFF).
The stored stroke limit 1 or 2
axis exists function has been activated.
During the reference point return,
the limit switch for near-point
detection passed over the dog
without being able to stop on it.
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CHAPTER 4 APPENDICES
Details
IV – 32
Remedy
• Check the check sum.
• Take the total of all the data.
• Take the total Exclusive OR of the
vertical direction parity check data,
and check.
• The tolerable movement amount is
set in "270003 Move amnt in pwr
OFF" on the Absolute Position
Setting screen.
• The setting range is 0.001 to
99999.999m, but if 0 is set, the
check will be invalidated.
• Set the absolute position reference
point.
• In the correction mode, move one
of the axes in the direction that the
error is reduced.
• Set the allowable value to 0 (check
invalid), or increase the allowable
value in the correction mode.
• Check the parameters, etc., that
should be the same for
synchronous axes.
• Check the specifications.
• The stroke end limit switch is
activated (is at the stroke end), so
move the machine with a manual
operation.
• Check for broken wires in the
stroke end signal line.
• Check whether the limit switch is
faulty.
• The machine is at the stroke end,
so move the machine manually.
• Reset the stored stroke limit setting
in the parameters.
• Increase the length of the
near-point dog.
• Decrease the reference point return
speed.
(Note) An error does not occur in
some systems, depending on
the system type.