14 Application Precautions
14.1.3 Connections to SGDB-
AN SERVOPACK
14-6
(b) Cn-12 (Brake ON Timing after Motor Stops)
Adjust brake timing with the following parameter if the machine moves slight due to gravity or other factors.
When using a servomotor with a brake, set the timing of turning OFF the Servo (i.e., stopping the motor out-
put) in reference to the output signal that controls the brake (/BK).
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 Operation). If gravity will
cause the machine to move slightly at this time due to machine configuration or brake characteristics, turning OFF the
Servo can be delayed to make sure there is no movement.
(c) Cn-15 and Cn-16 (Brake ON Timing When Motor Running)
Adjust the timing of the holding brake when the motor is running with the following parameters so that the
brake is applied after the servomotor stops.
When using a servomotor with a brake, set the timing of applying the brake when the Servo turns OFF during
motor running 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.
Cn-12
Delay Time from BK Signal
Output until Servo OFF
Units
10 ms
Setting
Range
0 to 50
Default
0
Speed, torque, or
position control
Cn-15
Speed Level for BK Signal
Output when Motor Run-
ning
Units
min
-1
Setting Range
0 to Max. speed
Default
100
Speed, torque, or
position control
Cn-16
Output Timing of BK Signal
when Motor Running
Units
10 ms
Setting Range
0 to 100
Default
50
Speed, torque, or
position control
/S-ON
入力
/BK
出力
サーボオンオフ動
作(モータ通電状
態)
ブレーキ
解放
サーボオン
モータ通電
ブレーキ保持
サーボオフ
モータ
非通電
サーボオフの
遅れ時間
Cn-12
/S-ON input
/BK output
Servo ON/OFF
(motor power
status)
Servo OFF
Motor OFF
Servo OFF
Delay Time
Brake held
Servo ON
Brake
released
Motor ON
INFO
/S-ON
入力
または
アラーム発生
電源オフ
モータ回転速度
(
min
)
Cn-15
/BK
出力
ブレーキ
解放
サーボオン
サーボオフ
DB
停止または
フリーラン停止
(
Cn0001 bit6
)
Cn-16
ブレーキ保持
-1
/S-ON input or
Power OFF or
Alarm
/BK output
Motor speed
Servo OFF
Brake
released
Brake held
Servo ON
DB or coasting
stop
(Cn001, bit6)
INFO