YASKAWA SGD7S series Product Manual page 115

Problem Possible Cause
The setting of Pn001 =
n.X (Motor Stopping
Method for Servo OFF and
Group 1 Alarms) is not suit-
able.
Dynamic
The dynamic brake resistor is
Brake Does
disconnected.
Not Operate
There was a failure in the
dynamic brake drive circuit.
4.1 SERVOPACKs with Analog Voltage/Pulse Train References
4.1.7 Troubleshooting Based on the Operation and Conditions of the Servomotor
Confirmation
Check the setting of
Pn001 = n.X.
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.
–
Continued from previous page.
Correction Reference
Set Pn001 = n.X
–
correctly.
Replace the SERVO-
PACK. To prevent dis-
–
connection, reduce the
load.
There is a defective
component in the
dynamic brake circuit.
–
Replace the SERVO-
PACK.
Continued on next page.
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