Mitsubishi Electric M700VS Series Setup Manual page 653

MITSUBISHI CNC
Appendix 2 Explanation of Alarms
Battery voltage drop
Warning No.
The battery voltage that is supplied to the absolute position detector dropped. The absolute position data is
9F
retained.
Investigation details
Change the used battery and check
whether the warning does not occur.
1
(Turning the power OFF and ON is
required.)
Check whether the battery cable is
2 disconnected, broken, or wired
incorrectly.
3 Measure the new battery voltage.
Check whether the cable connecting
between the battery box and CN9 is
4
short-circuited, broken, or wired
incorrectly.
Disconnect the BT-LG cable of the
battery box, and then measure the
5
voltage between DO(ALM) and
DOCOM terminals at power ON.
Perform a conductivity check with the
detector cable between BT and LG of
the drive unit in which the warning was
6
detected.
(Note) Make sure that the detector
side connector is disconnected.
(Note) When warning 9F occurs, do not turn the drive unit power OFF to ensure that the absolute position data is held.
Replace the battery with the drive unit power ON.
Distance-coded reference check / initial setup warning
Warning No.
When the detector with distance-coded reference marks is used, this warning is issued until the axis
A3
reaches the reference position during the initial setup of the distance-coded reference check function. This
warning disappears after the axis has reached the position.
Investigation details
1 Warning does not disappear.
Fan stop warning
Warning No.
A6
A cooling fan built in the drive unit stopped.
Investigation details
1 Check the alarm No. "45" items.
Warning No. Over regeneration warning
E0
Over-regeneration detection level exceeded 80%.
Investigation details
Check the acceleration/deceleration
1
cycle.
2 Check the load inertia.
636
Investigation results
The warning does not occur.
The warning occurs.
The connection is faulty.
The connection is normal.
Less than 3.4V.
3.4V or more.
The connection is faulty.
The connection is normal.
Low voltage.
Equivalent of 24V.
Resistance value is low.
Resistance value is 100M or more.
Investigation results
Stopped on the way to the reference
position.
Investigation results
Investigation results
The cycle operation being conducted
is severe for the average output.
No problem.
The load inertia is large.
Remedies
The battery has been drained.
Check the investigation item No. 2.
Correct the connection.
Replace the cable.
Check the investigation item No. 3.
Replace the battery.
Check the investigation item No. 6.
When a battery box is used, check the
investigation item No. 4.
Correct the connection.
Replace the cable.
Check the investigation item No. 5.
Replace the battery box.
Check the investigation item No. 6.
Replace the cable.
Replace the detector.
(With the absolute position system,
the zero point must be established.)
Remedies
Setup again.
Remedies
Remedies
Extend the cycle operation time to the
length that will not cause a warning.
Check the investigation item No. 2.
Lower the load inertia.
SV SP
SV SP
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SV SP
SV SP