Troubleshooting For Each Warning No - Mitsubishi MELDAS MDS-C1 Instruction Manual

6-4-2

Troubleshooting for each warning No.

Detector, initial communication error
Warning No.
90
Investigation details
1 Check the servo parameter
(SV025.pen) setting.
2 Check whether the drive unit
connector (CN3) and detector
connector are disconnected.
3 Turn the power OFF, and check the
detector cable connection with a
tester.
4 Check if there is any abnormality in
the tool end detector's ambient
environment.
(Ex.: Ambient temperature, noise,
grounding)
Detector, communication error
Warning No.
91
Investigation details
1 Check whether the drive unit
connectors (CN3) or detector
connectors are disconnected.
2 Is the detector cable wired in the
same conduit as the motor's power
cable or are the two cables laid in
parallel near each other?
3 Is the motor FG wire connected only
to the drive unit which drives it?
(Is the motor grounded to one point?)
4 Turn the power OFF, and check the
detector cable connection with a
tester. (Is the cable shielded?)
5 Connect to another normal axis drive
unit, and check whether the fault is
on the drive unit side or detector side.
6 Check if there is any abnormality in
the detector's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
Detector, protocol error
Warning No.
92
Investigation details
1 Check if there is any abnormality in
the detector's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
2 Check the repeatability.
6. Troubleshooting
Initial communication with the absolute position linear scale was not possible.
Investigation results
The setting is incorrect.
The setting is correct.
The connector is disconnected
(loose).
The connector is not disconnected.
The connection is faulty.
The connection is normal.
No abnormality is found in particular.
An abnormality was found in the
ambient environment.
An error was detected in the communication with the detector for the absolute position detection
system.
Investigation results
The connector is disconnected (or
loose).
The connector is not disconnected.
The cables are wired near each
other. (Noise is entering from the
power cable.)
The wires are sufficiently separated.
The motor FG wire is grounded on
the motor side.
The motor is grounded to one point.
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.
An error was detected in the data for the absolute position detection system.
Investigation results
No abnormality is found in particular.
An abnormality was found in the
ambient environment.
Occurs frequently.
Is not repeated.
Correctly set SV025.
Investigate item 2.
Correctly install.
Investigate item 3.
Replace the detector cable (CN3
side).
Investigate item 4.
Replace the tool end detector.
(With the absolute position system,
the zero point must be established.)
Take remedies according to the
causes of the abnormality.
Ex. High temperature:
Incomplete grounding:
Correctly install.
Investigate item 2.
Improve the cable wiring.
Investigate item 3.
Ground the motor to one point,
connecting the wires together on the
drive unit side.
Investigate item 4.
Replace the detector cable.
Investigate item 5.
Replace the drive unit.
Investigate item 6.
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:
Incomplete grounding:
Investigate item 2.
Take remedies according to the
causes of the abnormality.
Ex. High temperature:
Incomplete grounding:
Replace the detector.
Investigate item 1.
6 - 39
Remedies
Check the cooling fan.
Additionally ground.
Remedies
Check the cooling fan.
Additionally ground.
Remedies
Check the cooling fan.
Additionally ground.
SV SP
SV SP
SV SP