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11.3 Warning Displays
11-39
Inspection, Maintenance, and
Troubleshooting
1
1
A.930:
Absolute
Encoder Battery
Error
(The absolute
encoder battery
voltage is lower
than the specified
value.)
∗
Only when an
absolute encoder
is connected.
The battery connection
is incorrect.
Check the battery connection.
Reconnect the battery.
The battery voltage is
lower than the specified
value 2.7 V.
Measure the battery voltage.
Replace the battery.
SERVOPACK failure
−
The SERVOPACK may be faulty.
Replace the SERVOPACK.
A.971:
Undervoltage
• For 200-VAC SER-
VOPACKs:
The AC power supply
voltage was in the
range between 125 V
and 170 V.
• For 400-VAC SER-
VOPACKs:
The AC power supply
voltage was in the
range between 250 V
and 323 V.
Measure the power supply voltage.
Set the power supply voltage within
the specified range.
The power supply volt-
age dropped during
operation.
Measure the power supply voltage.
Increase the power supply capacity.
Occurrence of instanta-
neous power interrup-
tion.
Measure the power supply voltage.
Improve the power supply conditions.
SERVOPACK failure
−
The SERVOPACK may be faulty.
Replace the SERVOPACK.
A.97D:
Converter
Heat Sink
Overheated
The operating ambient
temperature is high.
Check the operating ambient tempera-
ture using a thermometer.
Improve the installation conditions of
the power regeneration converter and
reduce the operating ambient tempera-
ture.
The overload alarm has
been reset by turning
OFF the power too
many times.
−
Remove the cause of the overload
alarm.
Either the load is in
excess or operation is
performed beyond the
power regeneration pro-
cessing capacity.
−
Review the load and operation condi-
tions.
The installation orienta-
tion of the power regen-
eration converter is
incorrect or the dis-
tance from other equip-
ment is insufficient.
Check the installation conditions of
the power regeneration converter.
Install the power regeneration con-
verter correctly as specified.
Power regeneration
converter failure
−
The power regeneration converter
may be faulty. Replace the power
regeneration converter.
(cont’d)
Warning
Number:
Warning Name
(Warning
Description)
Cause
Investigative Actions
Corrective Actions