5.12 Holding Brake
5.12.3 Output Timing of /BK (Brake) Signal When the Servomotor Is Stopped
5
Basic Functions That Require Setting before Operation
5-35
5.12.3
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 SV_OFF (Servo
OFF) command is received. Use the servo OFF delay time (Pn506) to change the timing to turn
OFF power supply to the motor after the SV_OFF command is input.
5.12.4
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 Command 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
SV_OFF (Servo OFF)
command input
/BK signal
Motor power status
Servo ON
Servo OFF
OFF (Brake applied.)
Power not
supplied.Power
supplied.
ON (Brake
released.)
Pn507
Brake Reference Output Speed Level
Setting Range Setting Unit Default Setting When Enabled Classification
0 to 10,000
1 min
-1
100 Immediately Setup
Pn508
Servo OFF-Brake Command Waiting Time
Setting Range Setting Unit Default Setting When Enabled Classification
10 to 100 10 ms 50 Immediately Setup
Pn583
Brake Reference Output Speed Level
Setting Range Setting Unit Default Setting When Enabled Classification
0 to 10,000 1 mm/s 10 Immediately Setup
Pn508
Servo OFF-Brake Command Waiting Time
Setting Range Setting Unit Default Setting When Enabled Classification
10 to 100 10 ms 50 Immediately Setup
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