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Chapter 11 Troubleshooting
11–10
Alarm check timing
f1 f2 f3 f4
Alarm No.
17
A/D converter error:
There is an error in the drive unit's A/D converter.
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Investigation details Investigation results Remedies
The error is always repeated. Replace the drive unit. 1 Check the repeatability.
The state returns to normal once, but
occurs sometimes thereafter.
Investigate item 2.
No abnormality is found in particular. Replace the drive unit. 2 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.
18
Initial communication error:
Initial communication was not possible with the detector in the system using a
high-speed serial detector for the MAIN side detector.
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{
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Investigation details Investigation results Remedies
The value is not set correctly. Correctly set VO205. 1 Check the servo parameter (SV025)
setting value.
The value is set correctly. Investigate item 2.
The connector is disconnected (or
loose).
Correctly install. 2 Wiggle the connectors by hand to check
whether the detector connectors (driver
side and detector side) 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 driver side. Replace the drive unit. 4 Connect to another normal axis driver,
and check whether the fault is on the
driver side or detector side.
The alarm is on the detector side. Investigate item 5.
No abnormality is found in particular. Replace the detector. 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 check timing
f1 f2 f3 f4
Alarm No.
1A
Serial detector initial communication error (SUB):
Initial communication was not possible with the detector in the system using a
high-speed serial detector for the SUB side detector.
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{
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Investigation details Investigation results Remedies
1 Check the alarm No. "18" items.
CAUTION
To prevent trouble, when changing the motor and driver combination, avoid
driving a driver with a larger capacity than the specified driver using the motor.
The motor could be demagnetized. Note that this combination can be used for
checking in the emergency stop state. The motor can be driven with a driver
with a capacity smaller than the specifications.