Filter
Top Products
6. Troubleshooting
6 - 38
Alarm No.
89
Encoder 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.
Investigation details Investigation results Remedies SV SP
The connector is disconnected (or
loose).
Correctly install. 1 Wiggle the MDS-B-HR/MDS-B-PJEX
unit connector (CON3) by hand to
check whether it is disconnected.
The connector is not disconnected. Servo
: Investigate item 2.
Spindle
: Investigate item 4.
{ {
The cable is broken. Replace the cable. 2 Check whether the cable between
the linear scale and MDS-B-HR is
broken.
The cable is not broken. Investigate item 3.
{
No abnormality is found in particular. Replace the MDS-B-HR unit. 3 Check if there is any abnormality in
the unit's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
An abnormality was found in the
ambient environment.
Take remedies according to the
causes of the abnormality.
Ex. High temperature:
Check the cooling fan.
Incomplete grounding:
Additionally ground.
{
The cable is broken. Replace the cable. 4 Check whether the cable between
the spindle drive unit and
MDS-B-PJEX is broken.
The cable is not broken. Investigate item 5.
{
No abnormality is found in particular. Replace the drive unit. 5 Check if there is any abnormality in
the unit's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
An abnormality was found in the
ambient environment.
Take remedies according to the
causes of the abnormality.
Ex. High temperature:
Check the cooling fan.
Incomplete grounding:
Additionally ground.
{
Alarm No.
8A
Detection 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.
Investigation details Investigation results Remedies SV SP
1 Check the alarm No. "89" items.
{ {
Alarm No.
8B
Encoder converter unit 2, automatic adjustment error
An abnormal signal from the PLG was detected during automatic adjustment of the PLG.
Investigation details Investigation results Remedies SV SP
The connector is disconnected (or
loose).
Correctly install. 1 Check whether the MDS-B-PJEX
connectors (CN5) or detector
connectors are disconnected.
The connector is not disconnected. Investigate item 2.
{
There is a connection fault. Replace the detector cable. 2 Turn the power OFF, and check the
detector cable connection with a
tester.
The connection is normal. Investigate item 3.
{
There is a problem. (The A/B phase
input voltage is 0.8V or less or 2.2V
or higher.)
Adjust the PLG output waveform. 3 Check the PLG output waveform (A/B
phase).
Normal Investigate item 4.
{
Occurs each time. Replace the MDS-B-PJEX unit. 4 Check the occurrence frequency.
Occurs occasionally. Check whether the cable is
disconnected, whether there is a
contact fault, or a detector fault.
{