YASKAWA SGDV-OCA05A

5.11 Holding Brake
5.11.3 Output Timing of /BK (Brake) Signal When the Servomotor Is Stopped
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5.11.3 Output Timing of /BK (Brake) Signal When the
Servomotor Is Stopped
When the Servomotor is stopped, the /BK signal turns OFF as soon as the Servo OFF com-
mand (Enable = 0) is received. Use the servo OFF delay time (Pn506) to change the timing to
turn OFF power supply to the motor after the Servo OFF command is input.
5.11.4 Output Timing of /BK (Brake) Signal When the
Servomotor Is Operating
If an alarm occurs while the Servomotor is operating, the Servomotor will start stopping and the
/BK signal will be turned OFF. You can adjust the timing of /BK signal output by setting the
brake reference output speed level (Rotary Servomotors: Pn507, Linear Servomotors: Pn583)
and the servo OFF-brake reference waiting time (Pn508).
Note: If zero-speed stopping is set as the stopping method for alarms, the setting of Pn506 (Brake Reference-
Servo OFF Delay Time) is used after the motor stops.
• Rotary Servomotors
• Linear Servomotors
Pn506
Brake Reference-Servo OFF Delay Time
Setting Range Setting Unit Default Setting When Enabled Classification
0 to 50 10 ms 0 Immediately Setup
• When the Servomotor is used to control a verti-
cal axis, the machine moving part may move
slightly due to gravity or an external force.
You can eliminate this slight motion by setting
the servo OFF delay time (Pn506) so that
power supply to the motor is stopped after the
brake is applied.
• This parameter sets the timing of stopping
power supply to the Servomotor while the Ser-
vomotor is stopped.
Power supply to the Servomotor will be stopped immediately when an alarm occurs, regardless
of the setting of this parameter. The machine moving part may move due to gravity or an external
force before the brake is applied.
Pn506
/BK signal
OFF (Brake applied.)
Power
supplied.
Power not
supplied.
ON (Brake
released.)
Motor power
status
Servo OFF command
(Enable)
1
(servo ON)
0
(servo OFF)
Important
Brake Reference Output Speed Level
Pn507 Setting Range Setting Unit Default Setting When Enabled Classification
0 to 10,000
1 min
-1
100 Immediately Setup
Servo OFF-Brake Reference Waiting Time
Pn508 Setting Range Setting Unit Default Setting When Enabled Classification
10 to 100 10 ms 50 Immediately Setup
Brake Reference Output Speed Level
Pn583 Setting Range Setting Unit Default Setting When Enabled Classification
0 to 10,000 1 mm/s 10 Immediately Setup
Pn508
Servo OFF-Brake Reference Waiting Time
Setting Range Setting Unit Default Setting When Enabled Classification
10 to 100 10 ms 50 Immediately Setup