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Alarm List for the Servo Pack "S igma-III" Series (SGDS type) BBGB-10101-01 Alarm List for the Servo Pack "Sigma-III" Series (SGDS type) SHEET 9/18 Alarm Display Alarm Name Situation at Alarm Occurren…

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Alarm List for the Servo Pack "Sigma-III" Series (SGDS type)
BBGB-10101-01
Alarm List for the Servo Pack
"Sigma-III" Series (SGDS type)
SHEET
8/18
Alarm
Display
Alarm Name Situation at Alarm Occurrence Cause Corrective Actions
Occurred when the control power supply
was turned ON. (Setting:Pn002.2=1)
A SERVOPACK board fault occurred when an absolute
encoder is used with the setting for incremental encoder.
Replace the SERVOPACK.
Alarm occurred when the power to the absolute encoder was
initially turned ON.
Set up the encoder.
The encoder cable had been disconnected once. First confirm the connection and set up the encoder.
The power from both the PG power supply (+5 V) and the
battery power supply from the SERVOPACK is not being
supplied.
Replace the battery or take similar measures to supply
power to the encoder, and set up the encoder.
An absolute encoder fault occurred. If the alarm cannot be a reset by setting up the encoder
again.
A.810 Encoder Backup Error
Occurred when the control power supply
was turned ON using an absolute
encoder. (Setting:Pn002.2=0)
A SERVOPACK fault occurred. Replace the SERVOPACK.
A fault occurred in the encoder and was detected by encoder
self-diagnosis.
Set up the encoder.
If this alarm occurs frequently, replace the servomotor.
Occurred when the control power supply
was turned ON or during operation.
A SERVOPACK fault occurred. Replace the SERVOPACK.
A.820 Encoder Checksum Error
Occurred when Sensor ON (SENS_ON)
command was sent.
A fault occurred in the encoder and was detected by encoder
self-diagnosis.
Set up the encoder.
If this alarm occurs frequently, replace the servomotor.
When the control power supply was
turned ON. (Setting:Pn002.2=1)
When the absolute encoder was used as an incremental, a
SERVOPACK board fault occurred.
Replace the SERVOPACK.
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.830 Absolute Encoder Battery
Error
When the control power supply was
turned ON using an
absolute encoder. (Setting:Pn002.2=0)
A SERVOPACK board fault occurred. Replace the SERVOPACK.
A malfunction occurred in the encoder. Turn the encoder power supply OFF and then ON again.
If this alarm occurs frequently, replace the servomotor.
Occurred when the control power supply
was turned ON.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
A malfunction occurred in the encoder. Correct the wiring around the encoder by separating 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 servomotor.
A.840 Encoder Data Error
Occurred during operation.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
Alarm List for the Servo Pack "Sigma-III" Series (SGDS type)
BBGB-10101-01
Alarm List for the Servo Pack
"Sigma-III" Series (SGDS type)
SHEET
9/18
Alarm
Display
Alarm Name Situation at Alarm Occurrence Cause Corrective Actions
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 servomotor
runs at a speed less than 200 min
-1
.
An encoder fault occurred. Replace the servomotor.
Occurred when the control power supply
was turned ON.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
An encoder fault occurred. Replace the servomotor.
A.850 Encoder Over speed
Occurred during operation.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
An encoder fault occurred. Replace the servomotor. Occurred when the control power supply
was turned ON.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
The ambient temperature around the servomotor is too high. The ambient temperature must be 40-degrees centigrade
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.860 Encoder Overheated
Occurred during operation.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
A serial converter unit fault occurred and was detected by
self-diagnosis of serial converter unit.
Set up the serial converter unit.
If this alarm occurs frequently, replace the serial converter
unit.
Occurred when the control power supply
was turned ON or during operation.
A SERVOPACK fault occurred. Replace the SERVOPACK.
A.870 Fully-closed Serial Encoder
Checksum Alarm
Occurred when Sensor ON (SENS_ON)
command was issued.
A serial converter unit fault occurred and was detected by
self-diagnosis of serial converter unit.
Set up the serial converter unit.
If this alarm occurs frequently, replace the serial converter
unit.
A serial converter unit malfunctioned. Turn the SERVOPACK and serial converter unit power
supplies OFF and then ON again.
If this alarm occurs frequently, replace the serial converter
unit.
Occurred when the control power supply
was turned ON.
A SERVOPACK fault occurred. Replace the SERVOPACK.
A serial converter unit malfunctioned. Turn the SERVOPACK and serial converter unit power
supplies OFF and then ON again.
If this alarm occurs frequently, replace the serial converter
unit.
A serial converter unit fault occurred. Replace the serial converter unit.
A.880 Fully-closed Serial Encoder
Data Alarm
Occurred during operation.
A SERVOPACK fault occurred. Replace the SERVOPACK.
A.8A0 Fully-closed Serial Encoder
Scale Error
Occurred when the control power supply
was turned ON or during operation.
A linear encoder fault occurred. Replace the linear encoder.
A linear encoder fault occurred. Replace the linear encoder. A.8A1 Fully-closed Serial Encoder
Module Error
Occurred when the control power supply
was turned ON or during operation.
A scale converter unit fault occurred. Replace the serial converter unit.
Alarm List for the Servo Pack "Sigma-III" Series (SGDS type)
BBGB-10101-01
Alarm List for the Servo Pack
"Sigma-III" Series (SGDS type)
SHEET
10/18
Alarm
Display
Alarm Name Situation at Alarm Occurrence Cause Corrective Actions
A.8A2 Fully-closed Serial Encoder
Sensor Error (Incremental)
Occurred when the control power supply
was turned ON or during operation.
A linear encoder fault occurred. Replace the linear encoder.
A.b31 Current Detection Error 1 The current detection circuit for the Phase U is faulty.
A.b32 Current Detection Error 2 The current detection circuit for the Phase V is faulty.
Replace the SERVOPACK.
The detection circuit for the power supply is faulty. Replace the SERVOPACK. A.b33 Current Detection Error 3
Occurred when the control power supply
was turned ON or during operation.
The servomotor cable is disconnected. Check the motor wiring.
A.bF0 System Alarm 0
A.bF1 System Alarm 1
A SERVOPACK board fault occurred.
A.bF2 System Alarm 2
A.bF3 System Alarm 3
A.bF4 System Alarm 4
Occurred when the control power supply
was turned ON.
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
Occurred when the control power supply
was turned ON.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
The order of phase-U, -V, and -W in the servomotor wiring is
incorrect.
Correct the servomotor wiring.
An encoder fault occurred. Replace the servomotor.
A.C10 Servo Overrun Detected
Occurred when the servo was ON or a
reference was input.
A SERVOPACK fault occurred. Replace the SERVOPACK.
An encoder fault occurred. Replace the servomotor. Occurred when the control power supply
was turned ON.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
An encoder fault occurred. Replace the servomotor.
A.C80 Absolute Encoder Clear Error
and Multi turn Limit Setting
Error
Occurred when an encoder alarm was
cleared and reset.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
The encoder wiring and the contact are incorrect. Correct the encoder wiring.
Noise interference occurred due to incorrect encoder cable
specifications.
Use tinned annealed copper twisted-pair or twisted-pair
shielded wire with a core of at least 0.12 mm
2
(0.0002 in
2
).
A.C90 Encoder Communications
Error
Noise interference occurred because the wiring distance for the
encoder cable is too long.
The wiring distance must be 20m (65.6 ft) max.
The noise interference occurred on the signal line because the
encoder cable is bent and the sheath is damaged.
Correct the encoder cable layout.
The encoder cable is bundled with a high-current line or near a
high-current line.
Correct the encoder cable layout so that no surge is
applied.
A.C91 Encoder Communications
Position Data Error
Occurred when the control power supply
was turned ON or during operation.
The FG varies because of the influence from machines on the
servomotor side, such as welder.
Make the grounding for the machine separately from PG
side FG.