6.1 Alarms Related to the Dynamic Brake Hardware Option Specifications
6.1.2 Troubleshooting Alarms
6-4
A.730:
Dynamic Brake
Overload
(An excessive
power consump-
tion by the
dynamic brake
was detected.)
The Servomotor was
rotated by an external
force.
Check the operation
status.
Implement measures to
ensure that the motor will
not be rotated by an
external force.
–
When the Servomotor
was stopped by applying
the dynamic brake, the
rotational or linear kinetic
energy exceeded the
allowable energy con-
sumption of the dynamic
brake resistor.
Use the monitor to
check the allowable
energy consumption of
the dynamic brake
resistor.
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.
•
Select a suitable exter-
nal dynamic brake resis-
tor.
–
The external dynamic
brake resistor is not con-
nected properly.
Check the connection
status.
Connect the selected
dynamic brake resistor
correctly.
–
Pn601 (Dynamic Brake
Resistor Allowable Energy
Consumption) and Pn604
(Dynamic Brake Resis-
tance) are not set cor-
rectly.
Check to confirm that
the allowable energy
consumption and
resistance of the con-
nected dynamic brake
resistor match the set-
tings of Pn601
(Dynamic Brake Resis-
tor Allowable Energy
Consumption) and
Pn604 (Dynamic Brake
Resistance).
Set Pn601 (Dynamic
Brake Resistor Allowable
Energy Consumption) and
Pn604 (Dynamic Brake
Resistance) to the correct
values.
A failure occurred in the
SERVOPACK.
–
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
–
Continued from previous page.
Alarm Number:
Alarm Name
Possible Cause
Confirmation
Correction
Refer-
ence