11.1 Controlling Vertical Axes
11.1.4 Connections to Σ-I Series SGD SERVOPACK
11-9
( 2 ) Parameter Settings
The SERVOPACK parameters related to controlling the brake are described below.
Parameter Name Unit Setting/Range Default Control Mode
Cn-12
Brake ON Timing after
Motor Stops
10 ms 0 to 50 0
Speed, torque, position
control
Details
This parameter adjusts the Delay Time from /BK Signal Output until Servo OFF (stopping Servomotor output),
and it is used to be set when the machine moves slightly due to gravity or other factors after turning the brake
ON.
This parameter is used to set the timing when the motor is stopped. Brake operation while the
motor is running is set in Cn-15 and Cn-16.
For the standard settings, the Servo will turn OFF simultaneously with the /BK output (Brake Oper-
ation). If gravity causes the machine to move slightly at this time due to machine configuration or
brake characteristics, turning OFF the Servo can be delayed to reduce the movement.
Parameter Name Unit Setting/Range Default Control Mode
Cn-15
Brake ON Timing when
Motor Running
min
−1
0 to max. speed 100
Speed, torque, position
control
Cn-16 10 ms 0 to 100 50
Speed, torque, position
control
Details
Cn-15: Speed Level for BK Signal Output when Motor Running
Cn-16: Timing of BK Signal Output when Motor Running
These settings are used to set the timing for applying the brake when the Servo turns OFF due to an /S-ON input
signal or alarm.
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 machine operation.
/S-ON input
/BK output
Servo ON
Motor ON
Brake holding
Servo OFF
Cn-12
Servo ON/OFF
operation (motor
ON status)
Brake
released
Motor
OFF
Servo OFF
delay time
Cn-15
/BK output
Servo ON
Servo OFF
Cn-16
Brake holding
/S-ON input or
alarm occurred.
Power OFF
Motor speed
(min
−1
)
Stop with dynamic
brake or by coasting
(Cn0001 bit 6)
Brake
released
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