YASKAWA SGD7S series Product Manual page 173

9.1 Alarm Displays
9.1.2 Troubleshooting Alarms
Alarm Number:
Alarm Name
A.7A1:
Internal Tempera-
ture Error 1
(Control Board
Temperature
Error)
A.7A2:
Internal Tempera-
ture Error 2
(Power Board
Temperature
Error)
A.7A3:
Internal Tempera-
ture Sensor Error
(An error
occurred in the
temperature sen-
sor circuit.)
9-20
Possible Cause
Check the surrounding
temperature using a
thermostat. Or, check
The surrounding tem-
the operating status
perature is too high.
with the SERVOPACK
installation environment
monitor.
An overload alarm
Check the alarm display
was reset by turning
to see if there is an
OFF the power sup-
overload alarm.
ply too many times.
Use the accumulated
There was an exces-
load ratio to check the
sive load or operation
load during operation,
was performed that
and use the regenera-
exceeded the regen-
tive load ratio to check
erative processing
the regenerative pro-
capacity.
cessing capacity.
The SERVOPACK
installation orientation
is not correct or there Check the SERVOPACK
is insufficient space installation conditions.
around the SERVO-
PACK.
A failure occurred in
–
the SERVOPACK.
Check the surrounding
temperature using a
thermostat. Or, check
The surrounding tem-
the operating status
perature is too high.
with the SERVOPACK
installation environment
monitor.
An overload alarm
Check the alarm display
was reset by turning
to see if there is an
OFF the power sup-
overload alarm.
ply too many times.
Use the accumulated
There was an exces-
load ratio to check the
sive load or operation
load during operation,
was performed that
and use the regenera-
exceeded the regen-
tive load ratio to check
erative processing
the regenerative pro-
capacity.
cessing capacity.
The SERVOPACK
installation orientation
is not correct or there Check the SERVOPACK
is insufficient space installation conditions.
around the SERVO-
PACK.
A failure occurred in
–
the SERVOPACK.
A failure occurred in
–
the SERVOPACK.
Confirmation
Decrease the surround-
ing temperature by
improving the SERVO-
PACK installation condi-
tions.
Change the method for
resetting the alarm.
Reconsider the load and
operating conditions.
Install the SERVOPACK
according to specifica-
tions.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
Decrease the surround-
ing temperature by
improving the SERVO-
PACK installation condi-
tions.
Change the method for
resetting the alarm.
Reconsider the load and
operating conditions.
Install the SERVOPACK
according to specifica-
tions.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
Continued from previous page.
Correction Reference
*1
–
–
*1
–
*1
–
–
*1
–
–
Continued on next page.