Mitsubishi Electric MDS-B-SPJ2 Series Specification Manual page 149

(2) Alarm No.
[Details] A ROM check sum error or RAM check error occurred in the spindle drive unit.
Investigation items
1 Investigate
repeatability.
2 Investigate the wiring
and installation
environment.
1) Is the unit correctly
grounded?
2) Is there any device
that produces noise
around the unit?
(3) Alarm No.
[Details] The spindle drive unit data processing did not finish within the normal time.
Investigation items
1 Investigate
repeatability.
2 Investigate the wiring
and installation
environment.
1) Is the unit correctly
grounded?
2) Is there any device
that produces noise
around the unit?
(4) Alarm No.
[Meaning] The current detection A/D conversion circuit in the spindle drive unit did not operate
normally during initialization.
Investigation items
1 Investigate
repeatability.
2 Investigate the wiring
and installation
environment.
1) Is the unit correctly
grounded?
2) Is there any device
that produces noise
around the unit?
11. Troubleshooting
12 : MEMORY ERROR 1
Investigation results
The alarm occurs each time the
power is turned ON.
The alarm occurs sometimes.
1) The grounding is incomplete.
2) The alarm occurs easily when a
specific device is operated.
No particular problem.
13 : SOFTWARE PROCESS ERROR
Investigation results
The alarm occurs each time the
power is turned ON.
The alarm occurs sometimes.
1) The grounding is incomplete.
2) The alarm occurs easily when a
specific device is operated.
No particular problem.
17 : A/D CONVERTOR ERROR
Investigation results
The alarm occurs each time the
power is turned ON.
The alarm occurs sometimes.
1) The grounding is incomplete.
2) The alarm occurs easily when a
specific device is operated.
No particular problem.
Replace the spindle drive unit.
Investigate item 2, and carry out the
appropriate measures.
Correctly ground the unit.
Execute noise countermeasures for
the device at the left.
Replace the unit.
Replace the spindle drive unit.
Investigate item 2, and carry out the
appropriate measures.
Correctly ground the unit.
Execute noise countermeasures for
the device at the left.
Replace the unit.
Replace the spindle drive unit.
Investigate item 2, and carry out the
appropriate measures.
Correctly ground the unit.
Execute noise countermeasures for
the device at the left.
Replace the unit.
11 − 5
Remedy
Remedy
Remedy