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Alarm List for the Servo Pack "Sigma- III" Series (SGDS type) Alarm List BBF-10101-01 Alarm List for the Servo Pack "Sigma-III" Series (SGDS type) Alarm SHEET 10/14 Alarm Display Alarm Name Situation …

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Alarm List for the Servo Pack "Sigma-III" Series (SGDS type) Alarm List
BBF-10101-01
Alarm List for the Servo Pack
"Sigma-III" Series (SGDS type) Alarm
SHEET
9/14
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) Alarm List
BBF-10101-01
Alarm List for the Servo Pack
"Sigma-III" Series (SGDS type) Alarm
SHEET
10/14
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.
Alarm List for the Servo Pack "Sigma-III" Series (SGDS type) Alarm List
BBF-10101-01
Alarm List for the Servo Pack
"Sigma-III" Series (SGDS type) Alarm
SHEET
11/14
Alarm
Display
Alarm Name Situation at Alarm Occurrence Cause Corrective Actions
Noise interference occurred on the signal line from the encoder. Take a measure against noise for the encoder wiring.
Excessive vibration and shocks were applied to the encoder. Reduce the machine vibration or mount the servomotor
securely.
An encoder fault occurred. Replace the servomotor.
A.C92 Encoder Communications
Timer Error
Occurred when the control power supply
was turned ON or during operation.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
An encoder fault occurred. Replace the servomotor. A.CA0 Encoder Parameter Error Occurred when the control power supply
was turned ON.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
The encoder wiring and 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
).
Noise interference occurred because the wiring distance for the
encoder cable is too long.
The wiring distance must be 20m (65.6 ft) max.
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.
The FG varies because of the influence from the servomotor
side machines, such as welder.
Ground the machine separately from PG side FG.
Noise interference occurred on the signal line from the encoder. Take measures against noise for the encoder wiring.
Excessive vibration and shocks to the encoder was applied. Reduce the machine vibration or mount the servomotor
securely.
An encoder fault occurred. Replace the servomotor.
A.Cb0 Encoder Echo back Error Occurred when the control power supply
was turned ON or during operation.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
The parameter settings for the SERVOPACK are incorrect. Correct the setting of Pn205 (0 to 65535). Occurred when the control power supply
was turned ON.
The multi turn limit value for the encoder is not set or was
changed.
Execute Fn013 at the occurrence of alarm.
A.CC0 Multi-turn Limit Disagreement
Occurred during operation. A SERVOPACK board fault occurred. Replace the SERVOPACK.
Wiring of cable between serial converter unit and SERVOPACK
is incorrect or faulty contact.
Correct the cable wiring.
The specified cable is not used between serial converter unit
and SERVOPACK.
Use the specified cable.
Cable between serial converter unit and SERVOPACK is too
long.
Use 20-m cable max.
A.CF1 Fully-closed Serial Converter
Unit Communications Error
(Reception Error)
Occurred when the control power supply
was turned ON or during operation.
Sheath of cable between serial converter unit and
SERVOPACK is broken.
Replace the cable.