Mitsubishi MELDAS MDS-C1 Instruction Manual page 262

Motor side detector, CPU error 1
Alarm No.
A CPU initial error was detected with the motor end detector.
2B
Investigation details
1 Check if there is any abnormality in
the detector's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
Motor side detector, EEPROM/LED error
Alarm No.
Deterioration of the LEDs was detected with the motor end detector.
2C
Investigation details
1 Check the alarm No. "2B" items.
Motor side detector, data error
Alarm No.
A data error was detected with the motor end detector.
2D
Investigation details
1 Check the alarm No. "2B" items.
Motor side detector, communication error
Alarm No.
A communication data error was detected with the motor end detector. Or, communication was cut off.
2F
Investigation details
1 Check whether the drive unit
connectors (CN2) 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?) The motor is 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)
6. Troubleshooting
Investigation results
No abnormality is found in particular.
An abnormality was found in the
ambient environment.
Investigation results
Investigation results
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.
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.
6 - 17
Remedies
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
Correctly install.
Investigate item 2.
Improve the cable wiring.
Investigate item 3.
Connect 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:
Check the cooling fan.
Incomplete grounding:
Additionally ground.
SV SP
SV SP
SV SP
SV SP