YASKAWA Σ-V Series User Manual page 105

4 Operation
4.2.7 Holding Brakes
(5) Brake (/BK) Signal Output Timing during Linear Servomotor Operation
If an alarm occurs while the linear servomotor is running, the linear servomotor will come to a stop and the
brake (/BK) signal will be turned OFF. The timing of brake signal (/BK) output can be adjusted by setting the
brake reference output speed level (Pn583) and the waiting time for brake signal when motor running (Pn508).
Note: If the linear servomotor is set so that it comes to a zero-speed stop for an alarm, follow the information in (4) Brake
ON Timing after the Linear Servomotor Stops after the motor comes to a stop for a zero position reference.
Pn583
Pn508
/BK Signal Output Conditions When Linear
Servomotor Running
The brake is applied when either of the following
conditions is satisfied:
• When the motor speed falls below the level set in
Pn583 after the power to the linear servomotor is
turned OFF.
• When the time set in Pn508 is exceeded after the
power to the linear servomotor is turned OFF.
4-18
Brake Reference Output Speed Level
Setting Range Setting Unit
0 to 10000
Waiting Time for Brake Signal When Motor Running
Setting Range Setting Unit
10 to 100
• The linear servomotor will be limited to its maximum speed even if the value set in
Pn583 is higher than the maximum speed.
• Do not allocate the motor movement detection signal (/TGON) and the brake signal
(/BK) to the same terminal, otherwise the /TGON signal will be turned ON by the fall-
ing speed on a vertical axis, and the brake may not be turned ON.
For the /BK signal, do not use the terminal that is already being used for another sig-
nal.
Speed
Factory Setting
100
1 mm/s
Speed
Factory Setting
10 ms 50
Servo ON command
or the power turns OFF
at alarm occurrence.
Motor speed
Power to motor
/BK output
Position
Force
Classification
When Enabled
Immediately
Position
Force
Classification
When Enabled
Immediately
OFF
ON
Pn583
No power to motor
Power to motor
Brake released
Brake applied
(OFF)
(ON)
Pn508
Setup
Setup
Stop by dynamic
brake or
coast to a stop
Pn001.0