Mitsubishi MELDAS MDS-C1

6. Troubleshooting
6 - 10
6-3-2 List of warnings
When a warning occurs, a warning No. will appear on the NC monitor screen and with the LEDs on the
front of the drive unit. Check the warning No., and remove the cause of the warning by following this
list.
Drive unit warnings
No. Alarm name SV SP Warning details Reset
90 Detector, initial communication error
{
Initial communication with the absolute position linear scale was not
possible.
PR
91 Detector, communication error
{
An error was detected in the communication with the detector for the
absolute position detection system.
*
92 Detector, protocol error
{
An error was detected in the data for the absolute position detection
system.
*
93 Initial absolute position fluctuation
{
The position data fluctuated when creating the initial absolute position. PR
96 MP scale feedback error
{
An excessive deviation was detected in the motor end detector and MP
scale feedback data for the MP scale absolute position detection
system.
*
97 MP scale offset error
{
An error was detected in the offset data received from the MP scale for
the MP scale absolute position detection system.
PR
9E Absolute position detector, multi-
rotation counter error
{
An error was detected in the multi-rotation counter for the absolute
position detector. The absolute position cannot be compensated.
*
9F Battery voltage drop
{
The voltage of the battery supplying to the absolute position detector
has dropped. The absolute position data is held.
*
A8 Turret indexing error warning
{
The commanded turret indexing position shift amount is not within the
specified range.
*
A9 Orientation feedback error warn
{
Retrying during an orientation feedback error. *
E1 Overload warning
{ {
The overload detection level is 80% or more. *
E3 Absolute position counter warning
{
A deviation was detected in the absolute position data and absolute
position data.
*
E4 Parameter error warning
{ {
A parameter exceeding the setting range was set. *
E6 Control axis removal warning
{
Control axis removal was commanded. *
E7 CNC emergency stop
{ {
Emergency stop was input from the NC. *
(Note) SV indicates an alarm for the MDS-C1-V1/V2 unit, and SP indicates an error for the MDS-C1-SP/SPH/SPX/SPHX/SPM
unit.
Power supply warnings
No.
LED
display
Alarm name CV CR Warning details Reset
E8
Auxiliary regeneration
frequency over
{
Regeneration at the power supply performance limit is occurring
frequently.
*
E9
Instantaneous power failure
warning
{
An instantaneous power failure occurred. NR
EA
External emergency stop
{
The external emergency stop signal was input. *
EB
Over-regeneration warning
{
The over-regeneration level is 80% or more. *
(Note) CV indicates a warning that occurs with the MDS-C1-CV unit, and CR indicates a warning that occurs with the MDS-A-CR
unit.
Resetting methods
* : Automatically reset once the cause of the warning is removed.
NR : Reset with the NC RESET button. This warning can also be reset with the PR and AR resetting conditions.
PR : Reset by turning the NC power ON again. This warning can also be reset with the AR resetting conditions.
When the control axis is removed, this warning can be reset with the NC RESET button. (Excluding warning 93.)