9 Inspection, Maintenance, and Troubleshooting
9.1.3 Troubleshooting of Alarm and Warning
9-12
A.860
Encoder Over-
heated
(Only when an
absolute encoder
is connected)
(Detected on the
encoder side.)
Occurred when the
control power sup-
ply was turned
ON.
An Encoder fault
occurred. Replace the servomotor.
A SERVOPACK board fault
occurred. Replace the SERVOPACK.
Occurred during
operation.
The ambient temperature at servomotor is too
high.
The ambient temperature must be 40°C or less.
The servomotor load is more than the rated load. The servomotor load must be within the speci-
fied range.
An Encoder fault
occurred. Replace the servomotor.
A SERVOPACK board fault
occurred. Replace the SERVOPACK.
A.b31
Current Detec-
tion Error 1
Occurred when the
control power sup-
ply was turned ON
or during opera-
tion.
Phase-U current detection circuit fault Replace the SERVOPACK.
A.b32
Current Detec-
tion Error 2
Phase-V current detection circuit fault
A.b33
Current Detec-
tion Error 3
Power supply detection circuit fault Replace the SERVOPACK.
Servomotor cable disconnection Check the motor wiring.
A.bF0
System Alarm
0
(Internal pro-
gram processing
error)
Occurred when the
control power sup-
ply was turned
ON.
A SERVOPACK board fault
occurred. Replace the SERVOPACK.
A.bF1
System Alarm
1
(Internal pro-
gram error)
A.bF2
System Alarm
2
(Current control
processing pro-
gram error)
A.bF3
System alarm 3
(Encoder inter-
face processing
error)
A.bF4
System Alarm
4
(CPU watchdog
timer error)
A.C10
Servo Overrun
Detected
(Detected when
the servo is ON.)
Occurred when the
control power sup-
ply was turned
ON.
A SERVOPACK board fault
occurred. Replace the SERVOPACK.
Occurred when the
servo was ON or a
reference was
input.
Incorrect order of phase-U, -V, and -W in the ser-
vomotor wiring.
Correct the servomotor wiring.
An Encoder fault
occurred. Replace the servomotor.
A SERVOPACK fault
occurred. Replace the SERVOPACK.
A.C80
Absolute
Encoder Clear
Error and Multi-
turn Limit Set-
ting Error
Occurred when the
control power sup-
ply was turned ON
An Encoder fault
occurred. Replace the servomotor.
A SERVOPACK board fault
occurred. Replace the SERVOPACK.
Occurred when an
encoder alarm was
reset
An Encoder fault
occurred. Replace the servomotor.
A SERVOPACK board fault
occurred. Replace the SERVOPACK.
Table 9.3 Alarm Display and Troubleshooting (Cont’d)
Alarm
Display
Alarm Name
Situation at Alarm
Occurrence
Cause Corrective Actions
SIEPS80000025.book 12 ページ ２００４年１０月２５日 月曜日 午前１１時５７分
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