6. Troubleshooting
6 - 9
Drive unit alarm
No. Alarm name SV SP Alarm details Reset
7F Power reboot request
A mismatch in the program mode selection was detected. Turn the drive
unit power ON again.
PR
88 Watch dog
§
{
The system is not operating normally. AR
89 Detector converter unit 2
connection error
§
{
With the servo, an error was detected in the connection with the analog
output linear scale for the MDS-B-HR unit. With the spindle, initial
communication with the MDS-B-PJEX was not possible.
PR
8A Encoder converter unit 2
communication error
{ {
With the servo, an error was detected in the communication with the
serial output linear scale for the MDS-B-HR unit. With the spindle, an
error was detected in the communication with the MDS-B-PJEX.
PR
8B Encoder converter unit 2 automatic
adjustment error
{
An abnormal signal from the PLG was detected during automatic
adjustment of the PLG.
PR
8C Encoder converter unit 2 judgment
error
{
A detector type not within the specifications was detected with the
MDS-B-PJEX.
PR
8D Encoder converter unit 2 CPU error
§
{
With the servo, a CPU error was detected with the MDS-B-HR unit.
With the spindle, a CPU error was detected with the MDS-B-PJEX unit.
AR
8E Encoder converter unit 2 data error
§
A data error was detected with the MDS-B-HR unit. PR
(Note 1) Servo (SV) alarm stopping method ... {: Deceleration control, §: Dynamic brake stop, : Initial error (while motor is
stopped)
(Note 2) SV indicates an alarm for the MDS-C1-V1/V2 unit, and SP indicates an alarm for the MDS-C1-SP/SPH/SPX/SPHX/SPM
unit.
Resetting methods
NR : Reset with the NC RESET button. This alarm can also be reset with the PR and AR resetting conditions.
PR : Reset by turning the NC power ON again. This alarm can also be reset with the AR resetting conditions.
When the control axis is removed, this alarm can be reset with the NC RESET button. (Excluding alarms 32 and 37.)
AR : Reset by turning the servo drive unit power ON again.
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