5.11 Holding Brake
5.11.3 Output Timing of /BK (Brake) Signal When the Servomotor Is Stopped
5-34
Allocating the /BK (Brake) Signal
Set the allocation for the /BK signal in Pn50F = n.
X
(/BK (Brake Output) Signal Alloca-
tion).
5.11.3
Output Timing of /BK (Brake) Signal When the
Servomotor Is Stopped
When the Servomotor is stopped, the /BK signal turns OFF as soon as the Servo OFF com-
mand (Disable Operation command) is received. Use the servo OFF delay time (Pn506) to
change the timing to turn OFF power supply to the motor after the Servo OFF command (Dis-
able Operation command) is input.
*
The default setting is 32 for a SERVOPACK with built-in Servomotor brake control.
Parameter
Connector Pin No.
Meaning
When
Enabled
Classification
+ Pin
- Pin
Pn50F
(250F
hex)
n.
0
−
−
The /BK signal is not used.
After restart
Setup
n.
1
(default set-
ting)
CN1-1
CN1-2
The /BK signal is output from
CN1-1 and CN1-2.
n.
2
CN1-23
CN1-24
The /BK signal is output from
CN1-23 and CN1-24.
n.
3
CN1-25
CN1-26
The /BK signal is output from
CN1-25 and CN1-26.
If you allocate more than one signal to the same output connector pin, a logical OR of the signals
is output. Allocate the /BK signal to its own output connector pin, i.e., do not use the same out-
put terminal for another signal.
For example, never allocate the /TGON (Rotation Detection) signal and /BK signal to the same
output connector pin. If you did so, the /TGON signal would be turned ON by the falling speed on
a vertical axis, and the brake would not operate.
Important
Pn506
(2506
hex)
Brake Reference-Servo OFF Delay Time
Setting Range
Setting Unit
Default Setting
When Enabled
Classification
0 to 50
10 ms
0
*
Immediately Setup
Speed
Position
Torque
•
When the Servomotor is used to control a verti-
cal axis, the machine moving part may move
slightly due to gravity or an external force.
You can eliminate this slight motion by setting
the servo OFF delay time (Pn506) so that
power supply to the motor is stopped after the
brake is applied.
•
This parameter sets the timing of stopping
power supply to the Servomotor while the Ser-
vomotor is stopped.
Controlword (6040 hex)
Pn506
Disable
Operation
Enable
Operation
/BK signal
Motor power status
OFF (Brake applied.)
Power not
supplied to
motor.
Power supplied
to motor.
ON (Brake
released.)
Power supply to the Servomotor will be stopped immediately when an alarm occurs, regardless
of the setting of this parameter. The machine moving part may move due to gravity or an external
force before the brake is applied.
Important
