Troubleshooting; Troubleshooting For Each Alarm No - Mitsubishi MELDAS MDS-C1 Instruction Manual

6-4

Troubleshooting

Follow this section to troubleshoot the alarms that occur during start up or while the machine is
operating. If the state is not improved with the following investigations, the drive unit may be faulty.
Exchange the unit with another unit of the same capacity, and check whether the state is improved.
6-4-1

Troubleshooting for each alarm No.

Axis selection error
Alarm No.
11
Investigation details
1 Check the setting of the axis
selection switch on the top of the unit.
Memory error 1
Alarm No.
12
Investigation details
1 Refer to "6-2 Troubleshooting at power ON".
Software processing error 1
Alarm No.
13
Investigation details
1 Check whether the servo software
version was changed recently.
2 Check the repeatability.
3 Check if there is any abnormality in
the unit's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
Software processing error 2
Alarm No.
14
Investigation details
1 Carry out the items for alarm No. 13.
Magnetic pole position detection error
Alarm No.
16
Investigation details
1 Was the spindle drive unit replaced?
2 Check the spindle parameters.

6. Troubleshooting

The axis No. selection switch setting is incorrect.
Investigation results
The same axis No. is set for the L and
M axes.
A CPU or internal memory error was detected during the self-check at power ON.
Investigation results
The software process was not completed within the specified time. (CPU1)
Investigation results
The version was changed.
The version was not changed.
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.
The software process was not completed within the specified time. (CPU2)
Investigation results
Creation of the initial magnetic pole, required for motor control, was not completed.
Investigation results
It was replaced.
It was not replaced.
SP205 = 0
SP205 = 1
Correctly set the axis No.
0 = No. 1 axis, 1 = No. 2 axis, ...
Try replacing with the drive unit
containing the original software
version.
Investigate item 2.
Replace the drive unit.
Investigate item 3.
Replace the drive unit.
Take remedies according to the
causes of the abnormality.
Ex. High temperature:
Incomplete grounding:
Carry out automatic adjustment of the
PLG Z-phase.
Investigate item 2.
Carry out automatic adjustment of the
PLG Z-phase.
Set SP205 to 0, and turn the NC
power ON again. Then, carry out
automatic adjustment of the PLG
Z-phase.
6 - 11
Remedies
Remedies
Remedies
Check the cooling fan.
Additionally ground.
Remedies
Remedies
SV SP
SV SP
SV SP
SV SP
SV SP