YASKAWA SGDH User Manual page 552

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