8 Operation
8.4.3 Holding Brakes
8-16
(4) Brake (/BK) Signal Output Timing during Servomotor Rotating
If an alarm occurs while the servomotor is rotating, the servomotor will come to a stop and the brake signals
will be turned OFF. The timing of brake signal output can be adjusted by setting the brake reference output
speed level (Pn507) and the waiting time for brake signal when motor running (Pn508).
Note: If the servomotor is set so that it comes to a zero-speed stop for an alarm, follow the information in (3) Brake ON
Timing after the Servomotor Stops after the servomotor comes to a stop for a zero position reference.
/BK Signal Output Conditions When
Servomotor Rotating
The /BK signal goes to high level (brake
ON) when either of the following condi-
tions is satisfied:
•When the motor speed falls below the
level set in Pn507 after the power to the
servomotor is turned OFF.
•When the time set in Pn508 is exceeded
after the power to the servomotor is
turned OFF.
Pn507
(2112h:2)
Brake Reference Output Speed Level
Classification
Setting Range Setting Unit Factory Setting When Enabled
0 to 10000
1 min
-1
100 Immediately Setup
Pn508
(2112h:4)
Waiting Time for Brake Signal When Motor
Running
Classification
Setting Range Setting Unit Factory Setting When Enabled
10 to 100 10 ms 50 Immediately Setup
The servomotor will be limited to its maximum speed even if the value set in Pn507 is
higher than the maximum speed.
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