Mitsubishi MELDAS MDS-C1 Instruction Manual page 257

A/D converter error
Alarm No.
An error was detected in the A/D converter for current FB detection.
17
Investigation details
1 Check the repeatability.
2 Check if there is any abnormality in
the unit's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
Motor side detector, initial communication error
Alarm No.
Initial communication with the motor end detector was not possible.
18
Investigation details
1 Check the servo parameter (SV025)
setting value.
OSE104: 0, OSA104: 1
Are all other set to 2?
(Excluding slave axis for
synchronous control)
2 Check whether the drive unit
connectors (CN2) or detector
connectors are disconnected.
3 Turn the power OFF, and check the
detector cable connection with a
tester.
4 Connect to another normal axis drive
unit, and check whether the fault is
on the drive unit side or detector side.
5 Check if there is any abnormality in
the detector's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
Synchronous control/detector communication error
Alarm No.
Initial communication with the master axis motor end detector was not possible when the closed current
19
command synchronous control was set. Or, the communication was cut off.
Investigation details
1 Check whether the MDS-B-SD unit
CN2B connector is disconnected.
2 Check the continuity of the cable
between the MDS-B-SD unit CN2B
and the slave side drive unit CN3.
6. Troubleshooting
Investigation results
The error is always repeated.
The state returns to normal once, but
occurs sometimes thereafter.
No abnormality is found in particular.
An abnormality was found in the
ambient environment.
Investigation results
The value is not set correctly.
The value is set correctly.
The connector is disconnected (or
loose).
The connector is not disconnected.
There is a connection fault.
The connection is normal.
The alarm is on the drive unit side.
The alarm is on the detector side.
No abnormality is found in particular.
An abnormality was found in the
ambient environment.
Investigation results
The connector is disconnected.
The connector is not disconnected.
The cable is disconnected or
incorrectly connected.
There is no abnormality in particular.
6 - 12
Remedies
Replace the drive unit.
Investigate item 2.
Replace the drive unit.
Take remedies according to the
causes of the abnormality.
Ex. High temperature:
Check the cooling fan.
Incomplete grounding:
Additionally ground.
Remedies
Correctly set SV025.
Investigate item 2.
Correctly install.
Investigate item 3.
Replace the detector cable.
Investigate item 4.
Replace the drive unit.
Investigate item 5.
Replace the detector.
(With the absolute position system,
the zero point must be established.)
Take remedies according to the
causes of the abnormality.
Ex. High temperature:
Check the cooling fan.
Incomplete grounding:
Additionally ground.
Remedies
Correctly connect.
Investigate item 2.
Replace the cable.
Try replacing the drive unit or
MDS-B-SD unit.
SV SP
SV SP
SV SP