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6. Troubleshooting
6 - 13
Alarm No.
1A
Machine side detector, initial communication error
Initial communication with the linear scale or ball screw end detector was not possible.
Investigation details Investigation results Remedies SV SP
The value is not set correctly. Correctly set SV025. 1 Check the servo parameter
(SV025.pen) setting value.
Are the serial communication
parameters set for the pulse-type
detector?
The value is set correctly. Investigate item 2.
{
The connector is disconnected (or
loose).
Correctly install. 2 Check whether the drive unit
connectors (CN3) or detector
connectors are disconnected.
The connector is not disconnected. Investigate item 3.
{
There is a connection fault. Replace the detector cable. 3 Turn the power OFF, and check the
detector cable connection with a
tester.
The connection is normal. Investigate item 4.
{
The alarm is on the drive unit side. Replace the drive unit. 4 Connect to another normal axis drive
unit, and check whether the fault is
on the drive unit side or detector side.
The alarm is on the detector side. Investigate item 5.
{
No abnormality is found in particular. Replace the detector.
(With the absolute position system,
the zero point must be established.)
5 Check if there is any abnormality in
the detector'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.
1B
Machine side detector, CPU error 1
A CPU initial error was detected with the linear scale or ball screw end detector.
Investigation details Investigation results Remedies SV SP
The alarm is on the drive unit side. Replace the drive unit. 1 Connect to another normal axis drive
unit, and check whether the fault is
on the drive unit side or scale side.
The alarm is on the detector side. Investigate item 2.
{
No abnormality is found in particular. Replace the detector.
(With the absolute position system,
the zero point must be established.)
2 Check if there is any abnormality in
the detector'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.
1C
Machine side detector, EEPROM/LED abnormality
An error was detected in the data stored in the memory by the linear scale. Or, LED deterioration was
detected with the linear scale.
Investigation details Investigation results Remedies SV SP
1 Check the alarm No. "1B" items.
{
Alarm No.
1D
Machine side detector, data error
A data error was detected with the linear scale or ball screw end detector.
Investigation details Investigation results Remedies SV SP
1 Check the alarm No. "1B" items.
{
Alarm No.
1E
Machine side detector, memory error
An internal memory error was detected with the linear scale.
Investigation details Investigation results Remedies SV SP
1 Check the alarm No. "1B" items.
{