12.4 Troubleshooting Based on the Operation and Conditions of the Servomotor
12-55
Dynamic
Brake Does
Not Operate
The setting of Pn001 =
n.X (Motor Stopping
Method for Servo OFF and
Group 1 Alarms) is not suit-
able.
Check the setting of
Pn001 = n.X.
Set Pn001 = n.X
correctly.
–
The dynamic brake resistor is
disconnected.
Check the moment of
inertia, motor speed, and
dynamic brake frequency
of use. If the moment of
inertia, motor speed, or
dynamic brake frequency
of use is excessive, the
dynamic brake resis-
tance may be discon-
nected.
Replace the SERVO-
PACK. To prevent dis-
connection, reduce the
load.
–
There was a failure in the
dynamic brake drive circuit.
–
There is a defective
component in the
dynamic brake circuit.
Replace the SERVO-
PACK.
–
Continued on next page.
Continued from previous page.
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