10 Inspection, Maintenance, and Troubleshooting
10.1.6 Troubleshooting of Alarm and Warning
10-12
A.83
Absolute
Encoder
Battery Error
(Detected when
the battery volt-
age is lower than
the specified
value 2 to 4 s
after the control
power supply is
turned ON.)
(Only when an
absolute encoder
is connected.)
When the control
power supply was
turned ON.
(Setting:
Pn002.2=1)
When the absolute encoder was used as an incre-
mental, a SERVOPACK board fault occurred.
Replace the SERVOPACK.
When the control
power supply was
turned ON using an
absolute encoder.
(Setting:
Pn002.2=0)
The battery connection is incorrect.
Reconnect the battery.
The battery voltage is lower than the specified value
2.7 V.
Replace the battery, and then turn ON the power
to the encoder.
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
A.84
Encoder Data
Error
(Detected on the
encoder side.)
Occurred when the
control power sup-
ply was turned ON.
A malfunction occurred in the encoder.
Turn the encoder power supply OFF and then ON
again. If this alarm occurs frequently, replace the
servomotor.
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
Occurred during
normal operation.
A malfunction occurred in the encoder due to exter-
nal noise.
Correct the wiring around the encoder by separat-
ing the encoder cable from the power line, or by
checking the grounding and other wiring.)
An encoder fault occurred.
If this alarm occurs frequently, replace the servo-
motor.
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
A.85
Encoder Over-
speed
(Detected when
the encoder
power supply
was turned ON.)
(Detected on the
encoder side.)
Occurred when the
control power sup-
ply was turned ON.
When the encoder power supply turns ON and the
SEN signal is ON when using an absolute encoder,
the servomotor runs at 200 min
-1
or more.
Turn ON the encoder power supply when the ser-
vomotor runs at a speed less than 200 min
-1
.
An encoder fault occurred.
Replace the servomotor.
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
Occurred during
normal operation.
An encoder fault occurred.
Replace the servomotor.
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
A.86
Encoder
Overheated
(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
normal operation.
The ambient temperature around the servomotor is
too high.
The ambient temperature must be 40
°
C or less.
The servomotor load is greater than the rated load.
The servomotor load must be within the specified
range.
An encoder fault occurred.
Replace the servomotor.
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
A.b1
Reference
Speed Input
Read Error
(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 during
normal operation.
A malfunction occurred in reading section of the
speed reference input.
Clear and reset the alarm and restart the operation.
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
A.b2
Reference
Torque Input
Read Error
(Detected when
the servo is ON.)
Occurred when the
control power sup-
ply was turned ON.
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
A malfunction occurred in the reading section of the
torque reference input.
Clear and reset the alarm and restart the operation.
Occurred during
normal operation.
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
Table 10.6 Alarm Display and Troubleshooting (Cont’d)
Alarm
Display
Alarm Name
Situation at Alarm
Occurrence
Cause
Corrective Actions
Summary of Contents for SGDH
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