Yaskawa SGDS Sigma III Servo Amplifier - Manual (Page 304)

10.1 Troubleshooting
10-15
A.bF0 System Alarm
0 Occurred when the
control power
supply was turned
ON. A SERVOPACK board fault occurred. Replace the SERVOPACK.
A.bF1 System Alarm
1
A.bF2 System Alarm
2 A SERVOPACK board fault occurred.
A.bF3 System Alarm
3
A.bF4 System Alarm
4
A.C10 Servo Overrun
Detected Occurred when the
control power
supply was turned
ON. A SERVOPACK board fault occurred. Replace the SERVOPACK.
Occurred when the
servo was ON or a
reference was input. 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 SERVOPACK fault occurred. Replace the SERVOPACK.
A.C80 Absolute
Encoder Clear
Error and Multi-
turn Limit
Setting Error Occurred when the
control power
supply was turned
ON. An encoder fault occurred. Replace the servomotor.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
Occurred when an
encoder alarm was
cleared and reset. An encoder fault occurred. Replace the servomotor.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
A.C90 Encoder
Communicatio
ns Error Occurred when the
control power
supply was turned
ON or during
operation. 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 ).
Noise interference occurred because the wiring
distance for the encoder cable is too long. The wiring distance must be 20m (65.6 ft) max.
A.C91 Encoder
Communicatio
ns Position
Data Error 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.
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.
A.C92 Encoder
Communicatio
ns Timer Error 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 SERVOPACK board fault occurred. Replace the SERVOPACK.
A.CA0 Encoder
Parameter
Error Occurred when the
control power
supply was turned
ON. An encoder fault occurred. Replace the servomotor.
A SERVOPACK board fault occurred. Replace the SERVOPACK.
Table 10.3 Alarm Display and Troubleshooting (Cont’d)
Alarm
Display
Alarm Name
Situation at Alarm
Occurrence
Cause Corrective Actions