Release The Mechanical Brake - Siemens SINUMERIK 840D sl Function Manual

TE3: Speed/torque coupling, master-slave
16.9 Examples
Program code
N40 MASLOF (AX2)
N50 AX1=200 AX2=200
N60 M30
16.9.4

Release the mechanical brake

This application allows implementation of a brake control for machine axes AX1=Master axis
and AX2=Slave axis in a master-slave coupling.
Preconditions
● Master-slave coupling is configured.
● Axes are stationary.
● No servo enable signals.
Typical sequence of operations
Action
● Request to close the coupling
● Set controller enable
● Interpreting the feedback
● Release brakes
632
Comment
; Open the coupling.
; (Mechanically separate the axes)
; Move the axes separately.
Effect/comment
The following PLC interface signal is set:
DB31, ... DBX24.7 (Master/Slave ON)
PLC interface signal "Servo enable" DB31, ...
DBX2.1 is set for both axes.
Link PLC interface signals of the master axis using
AND:
DB31, ... DBX61.7 (current controller active)
DB31, ... DBX61.6 (speed controller active)
DB31, ... DBX61.5 (position controller active)
Link PLC interface signals of the saster axis using
AND:
DB31, ... DBX61.7 (current controller active)
DB31, ... DBX61.6 (speed controller active)
DB31, ... DBX96.7 (master/slave active)
If the result of the AND operations on the master
and slave axes is ≠ 0, the brake may be released.
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Special functions