YASKAWA SGDH User Manual page 455

(2) Brake Interlock Output
Type Name Connector Pin
Output /BK Must be allocated
This output signal controls the brake and is used only for a servomotor with a brake. This output signal is not used with the
factory settings. The output signal must be allocated (with Pn50F). It does not need to be connected for servomotors with-
out a brake.
IMPORTANT
The /BK signal is not output during overtravel, or when there is no power to the servomotor.
(3) Allocating Brake Signals (/BK)
The brake signal (/BK) is not used with the factory settings. The output signal must be allocated.
Parameter
n. 0
Pn50F
n. 1
n. 2
n. 3
IMPORTANT
When set to the factory setting, the brake signal is invalid. When multiple signals are allocated to the same output termi-
nal, the signals are output with OR logic. To output the /BK signal alone, disable the other output signals or set them to
output terminals other than the one allocated to the /BK signal. For the allocation of SERVOPACK output signals other
than /BK signal, refer to 7.3.3 Output Circuit Signal Allocation.
(4) Setting the Brake ON Timing after the Servomotor Stops
With the factory setting, the /BK signal is output at the same time as the servo is turned OFF. The servo OFF tim-
ing can be changed with a parameter.
Pn506 Delay Time from Brake Reference Until Servo OFF
Setting Range
0 to 50
(0 to 500 ms)
• When using the servomotor to control a vertical axis, the
machine movable part may shift slightly depending on the brake
ON timing due to gravity or an external force. By using this
parameter to delay turning the servo OFF, this slight shift can be
eliminated.
• This parameter changes the brake ON timing while the servomo-
tor is stopped.
For details on brake operation while the servomotor is operating,
refer to (5) Setting the Brake ON Timing When Servomotor Run-
ning in this section.
IMPORTANT
The servomotor will turn OFF immediately when an alarm occurs, regardless of the setting of this parameter.
The machine movable part may shift due to gravity or external force during the time until the brake operates.
Setting
Number
ON (low level)
OFF (high level)
Connector Pin Number
+ Terminal - Terminal
− −
CN1-25 CN1-26
CN1-27 CN1-28
CN1-29 CN1-30
Setting Unit
10 ms
8-23
8.3 Setting Common Basic Functions
Meaning
Releases the brake.
Applies the brake.
Meaning
The /BK signal is not used. (Factory setting)
The /BK signal is output from output terminal CN1-25, 26.
The /BK signal is output from output terminal CN1-27, 28.
The /BK signal is output from output terminal CN1-29, 30.
Speed
Factory Setting
0
/S-ON
(CN1-40)
/BK output Brake released
Power to motor Power to motor
Position Torque
Setting Validation
Immediately
Servo OFF
Servo ON
Brake held
No power to motor
Pn506
8