YASKAWA Sigma-7 SGD7S Series

Alarm Code Alarm Name Possible Cause Confirmation Correction
- If after several power
cycles the problem still
exists, replace the
PROFINET SERVO-
PACK module.
A.A47
(1A47h)
Parameter
Loading Error
The loading of SERVOPACK infor-
mation failed.
Check the parameter
settings.
Correct the parameter
settings and cycle
power.
The power supply was turned ON
while the encoder was not con-
nected.
Check the wiring of the
encoder.
Turn power supply
OFF, correct the
encoder connection
and turn power supply
ON.
A failure occurred in the PROFINET
SERVOPACK module.
- Replace the
PROFINET SERVO-
PACK module.
A.A48
(1A48h)
Read / Write
EEPROM Error
The power supply was turned OFF
while writing the parameter set-
tings.
Check the timing of
shutting OFF the power
supply.
Initialize the parameter
settings (load device
parameter set (PNU
976)) and then set the
parameters again.
The number of times that parame-
ters were written exceeded the
limit.
- Replace the
PROFINET SERVO-
PACK module. Recon-
sider the method for
writing the parameters.
The power supply voltage suddenly
dropped.
Measure the power
supply voltage.
"Set the power supply
voltage within the
specified range, and
initialize the parameter
settings (load device
parameter set (PNU
976))."
A failure occurred in the PROFINET
SERVOPACK module.
- Replace the
PROFINET SERVO-
PACK module.
A.A4F
(1A4Fh)
PROFINET
Fatal Error
Option card resource or configura-
tion problem.
Check IO-Controller
configuration.
Cycle power.
- If after several power
cycles the problem still
exists, replace the
PROFINET SERVO-
PACK module.
A.AA9
(1AA9h)
Abnormal Con-
trol State
Main power turned off during PRO-
FIdrive states "S3: Switched On",
"S4: Operation", or "S5: Switching
Off".
Check if main power
was turned off while
drive was not in PRO-
FIdrive states "S1:
Switching On Inhibited"
or "S2: Ready For
Switching On".
Supply main power and
send command fault
acknowledge.
Sigma-7 Series SERVOPACKs
Maintenance
Alarm Displays > Troubleshooting Alarms
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