YASKAWA SVC User Manual page 402

Parameter Name
Brake Reference -
Pn506
Servo OFF Delay Time
Details
This parameter adjusts the delay time from when the /BK signal is output until the Servomotor
turns OFF.
Set this parameter when the machine moves slightly due to gravity or other forces after the
brake is turned ON.
Setting Precautions
• This parameter is used to set when the motor stops. Set Pn507 and Pn508 to operate the
brake while the motor is running.
• Under the standard settings, the Servomotor turns OFF simultaneously with the /BK output
(brake operation). If gravity causes the machine to move slightly at this time due to the
machine configuration or the brake characteristics, you can delay when the Servomotor is
turned OFF to reduce the movement.
Parameter Name
Brake Reference Out-
Pn507
put Speed Level
Servo OFF - Brake
Pn508 Reference Waiting
Time
Details
These parameters are used to set the timing for applying the brake when the Servomotor turns
OFF due to an /S-ON input signal or when an alarm occurs.
• Conditions for Brake Operation during Servomotor Operation
The brake will operate when one of the following conditions is met.
• When the motor speed is equal to or less than the setting of Pn507 after power to the motor is
turned OFF
• When the time set in Pn508 has elapsed after power to the motor is turned OFF
Setting Precautions
The brake on the Servomotor is designed as a holding brake and it must be applied only after
the motor has stopped. Adjust this parameter while observing the operation of the machine.
Set Value/Setting
Unit
Range
10 ms 0 to 50
/S-ON input
Servo ON
Servo OFF
Brake
released.
Brake held.
/BK output
Motor ON
Servo ON/OFF
Pn506
Servo OFF delay
Set Value/Setting
Unit
Range
-1
0 to 10,000
min
10 ms 0 to 100
Servo ON
Power OFF on
Servo OFF
/S-ON input
or alarm
Motor speed
Pn507
Brake
released.
/BK output
Pn508
6.1 Controlling Vertical Axes
6.1.2 Connecting to a Σ-V or Σ-7 Servo Drive
Default
0
Motor OFF
Default
Speed, torque, or
100
position control
Speed, torque, or
50
position control
DB stop or
free-run stop
(Pn001.0)
Brake held.
Valid Control
Modes
Speed, torque, or
position control
Valid Control
Modes
6
6-5