Mitsubishi MELDAS MDS-C1 Instruction Manual page 258

Machine side detector, initial communication error
Alarm No.
Initial communication with the linear scale or ball screw end detector was not possible.
1A
Investigation details
1 Check the servo parameter
(SV025.pen) setting value.
Are the serial communication
parameters set for the pulse-type
detector?
2 Check whether the drive unit
connectors (CN3) 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)
Machine side detector, CPU error 1
Alarm No.
A CPU initial error was detected with the linear scale or ball screw end detector.
1B
Investigation details
1 Connect to another normal axis drive
unit, and check whether the fault is
on the drive unit side or scale side.
2 Check if there is any abnormality in
the detector's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
Machine side detector, EEPROM/LED abnormality
Alarm No.
An error was detected in the data stored in the memory by the linear scale. Or, LED deterioration was
1C
detected with the linear scale.
Investigation details
1 Check the alarm No. "1B" items.
Machine side detector, data error
Alarm No.
A data error was detected with the linear scale or ball screw end detector.
1D
Investigation details
1 Check the alarm No. "1B" items.
Machine side detector, memory error
Alarm No.
An internal memory error was detected with the linear scale.
1E
Investigation details
1 Check the alarm No. "1B" items.
6. Troubleshooting
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 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
Investigation results
Investigation results
6 - 13
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
Replace the drive unit.
Investigate item 2.
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
Remedies
Remedies
SV SP
SV SP
SV SP
SV SP
SV SP