YASKAWA SGD7S-1R9D Product Manual page 500

15.2 Alarm Displays
15.2.2 Troubleshooting Alarms
Alarm Code:
Alarm Name
730 hex and
731 hex:
Dynamic Brake
Overload
(An excessive
power consump-
tion by the
dynamic brake
was detected.)
740 hex:
Inrush Current
Limiting Resistor
Overload
(The main circuit
power supply
was frequently
turned ON and
OFF.)
7A1 hex:
Internal Tempera-
ture Error 1
(Control Board
Temperature
Error)
15-20
Possible Cause
The Servomotor was
Check the operation
rotated by an external
status.
force.
When the Servomo-
tor was stopped with
Check the power con-
the dynamic brake,
sumed by the DB resis-
the rotational or linear
tor to see how
kinetic energy
frequently the DB is
exceeded the capac-
being used.
ity of the Dynamic
Brake Resistor.
A failure occurred in
–
the SERVOPACK.
The allowable fre-
quency of the inrush
current limiting resis-
tor was exceeded –
when the main circuit
power supply was
turned ON and OFF.
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.
Confirmation
Implement measures to
ensure that the motor will
not be rotated by an
external force.
Reconsider the following:
• Reduce the Servomotor
command speed.
• Decrease the moment
of inertia ratio or mass
ratio.
• Reduce the frequency of
stopping with the
dynamic brake.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
Reduce the frequency of
turning the main circuit
power supply ON and
OFF.
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.
Continued from previous page.
Correction Reference
–
–
–
–
–
page 3-6
–
–
page 3-3,
page 3-5
–
Continued on next page.