5.12 Holding Brake
5.12.2 /BK (Brake Output) Signal
5
Device-
S
pecific
S
etting
s
5-33
Linear Servomotors: The times required to brake depend on the brake that you use. Set the parameters related
to /BK signal output timing according to the delay times for the brake that you will actually use.
*2.
Before you output a reference from the SVD to the Servo Section, wait for at least 50 ms plus the brake release
delay time after you turn ON the servo.
*3.
Use the following parameters to set the timing of when the brake will operate and when the servo will be turned
OFF.
•
Rotary Servomotors: Pn506 (Brake Reference-Servo OFF Delay Time), Pn507 (Brake Reference Output
Speed Level), and Pn508 (Servo OFF-Brake Command Waiting Time)
•
Linear Servomotors: Pn506 (Brake Reference-Servo OFF Delay Time), Pn508 (Servo OFF-Brake Command
Waiting Time), and Pn583 (Brake Reference Output Speed Level)
Connection Examples
Refer to the following section for information on brake wiring.
3.4.4 Wiring the SERVOPACK to the Holding Brake
5.12.2
/BK (Brake Output) Signal
The following settings are for the output signal that controls the brake. You can change the
connector pin that is allocated. For details, refer to
Allocating the /BK (Brake Output) Signal
.
The /BK signal is turned OFF (to operate the brake) when the servo is turned OFF or when an
alarm is detected. You can adjust the timing of brake operation (i.e., the timing of turning OFF
the /BK signal) with the servo OFF delay time (Pn506).
Allocating the /BK (Brake Output) Signal
Set the allocation for the /BK signal in Pn50F = n.
X
(/BK (Brake Output) Signal Allocation).
•
Axis A
Model
Voltage
Brake Release
Delay Time [ms]
Brake Operation
Delay Time [ms]
SGM7J-A5 to -04
24 VDC
60
100
SGM7J-06 and -08
80
SGM7A-A5 to -04
60
SGM7A-06 and -08
80
SGM7P-01
20
100
SGM7P-02 and -04
40
SGM7P-08
20
SGM7G-03 to -09
100
80
Type
Signal
Connector Pin No.
Signal Status
Meaning
Output
/BK
Axis A: CN1-23 and
CN1-24
Axis B: CN1-25 and
CN1-26
ON (closed)
Releases the brake.
OFF (open)
Activates the brake.
The /BK signal will remain ON during overtravel. The brake will remain released.
Parameter
Connector Pin No.
Meaning
When
Enabled
Classification
+ Pin
− Pin
Pn50F
n.
0
−
−
The /BK signal is not used.
After restart
Setup
n.
1
(default setting)
CN1-23
CN1-24
The /BK signal is output from
CN1-23 and CN1-24.
n.
2
CN1-27
CN1-28
The /BK signal is output from
CN1-27 and CN1-28.
Information