YASKAWA SGDV-180A - Page 10

on the
encoder
side.)
not being supplied.
status.
(Fn008).
An absolute encoder fault
occurred.
--
If the alarm cannot be reset by
setting up the encoder again,
replace the servomotor.
A SERVOPACK fault
occurred.
--
The SERVOPACK may be faulty.
Replace the SERVOPACK.
A.820
Encoder
Checksum
Error
(Detected
on the
encoder
side.)
An encoder fault occurred.
--
Set up the encoder again using
Fn008. If the alarm still occurs, the
servomotor may be faulty. Replace
the servomotor.
A SERVOPACK fault
occurred.
--
The SERVOPACK may be faulty.
Replace the SERVOPACK.
A.830
Absolute
Encoder
Battery
Error
(The
absolute
encoder
battery
voltage is
lower than
the
specified
value.)
The battery connection is
incorrect.
Check the battery
connection.
Reconnect the battery.
The battery voltage is lower
than the specified value
2.7V.
Measure the battery
voltage.
Replace the battery.
A SERVOPACK fault
occurred.
--
The SERVOPACK may be faulty.
Replace the SERVOPACK.
A.840
Encoder
Data Error
(Detected
on the
encoder
side.)
The encoder malfunctioned.
--
Turn the power supply OFF and then
ON again. If the alarm still occurs,
the servomotor may be faulty.
Replace the servomotor.
Malfunction of encoder
because of noise
interference, etc.
--
Correct the wiring around the
encoder by separating the encoder
cable from the servomotor main
circuit cable or by checking the
grounding and other wiring.
A.850
Encoder
Overspeed
(Detected
when the
control
power
supply was
turned ON.)
(Detected
on the
encoderside.)
The servomotor was
running at 200 min-1 or
higher when the control
power supply was turned
ON.
Check the motor
rotating speed (Un000)
to confirm the
servomotor speed
when the power is
turned ON.
Reduce the servomotor speed to a
value less than 200 min-1, and turn
ON the control power supply.
An encoder fault occurred.
--
Turn the power supply OFF and then
ON again. If the alarm still occurs,
the servomotor may be faulty.
Replace the servomotor.
A SERVOPACK fault
occurred.
--
Turn the power supply OFF and then
ON again. If the alarm still occurs,
the SERVOPACK may be faulty.
Replace the SERVOPACK.
A.860
Encoder
Overheated
(Only when
an absolute
encoder is
connected.)
(Detected
on the
encoder
side.)
The ambient operating
temperature around the
servomotor is too high.
Measure the ambient
operating temperature
around the servomotor.
The ambient operating temperature
must be 40°C or less.
The servomotor load is
greater than the rated load.
Check the accumulated
load ratio (Un009) to
see the load.
The servomotor load must be within
the specified range.
An encoder fault occurred.
--
Turn the power supply OFF and then
ON again. If the alarm still occurs,
the servomotor may be faulty.
Replace the servomotor.
A SERVOPACK fault
occurred.
--
Turn the power supply OFF and then
ON again. If the alarm still occurs,
the SERVOPACK may be faulty.
Replace the SERVOPACK.