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Chapter 11 Troubleshooting
11–11
Alarm check timing
f1 f2 f3 f4
Alarm No.
1B
CPU error (SUB):
An error was detected in the data stored in the EEPROM of an absolute position
linear scale connected to the SUB side.
–
{ { {
Investigation details Investigation results Remedies
The connector is disconnected (or
loose).
Correctly install. 1 Wiggle the connectors by hand to check
whether the absolute position linear
scale connectors (driver side and scale
side) 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.
The alarm is on the driver side. Replace the drive unit. 3 Connect to another normal axis driver,
and check whether the fault is on the
driver side or scale side.
The alarm is on the absolute position
linear scale side.
Investigate item 4.
No abnormality is found in particular. Replace the absolute position linear scale. 4 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 check timing
f1 f2 f3 f4
Alarm No.
1C
EEPROM/LED error (SUB):
An error was detected in the EEPROM of an absolute position linear position linear
scale connected to the SUB side.
–
{ { {
Investigation details Investigation results Remedies
1 Check the alarm No. "1B" items.
Alarm check timing
f1 f2 f3 f4
Alarm No.
1D
Data error (SUB):
An error was detected within one rotation position of an absolute position linear
position linear scale connected to the SUB side.
–
{ { {
Investigation details Investigation results Remedies
1 Check the alarm No. "1B" items.
Alarm check timing
f1 f2 f3 f4
Alarm No.
1E
ROM, RAM/thermal error (SUB):
A ROM/RAM error was detected in the absolute position linear scale connected to
the SUB side.
–
{ { {
Investigation details Investigation results Remedies
1 Check the alarm No. "1B" items.
Alarm check timing
f1 f2 f3 f4
Alarm No.
1F
Serial detector communication error (SUB)
Communication was cut off with the detector in the absolute position scale connected
to the SUB side.
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{ { {
Investigation details Investigation results Remedies
1 Check items 2 and following for alarm
No. "18".