Travel With Limited Torque/Force Foc - Siemens SINUMERIK 840D sl Function Manual

Alarm suppression after new programming
Travel to fixed stop can be used for simple measuring processes.
For example, it is possible to carry out a check for tool breakage by measuring the tool length
by traversing onto a defined obstacle. To do so, the fixed stop alarm must be suppressed.
When the function for clamping workpieces is then used "normally," the alarm can be activated
using part program commands.
6.2.9

Travel with limited torque/force FOC

Function
Using the "Force Control" function to traverse with limited torque/force, when traversing, the
maximum permissible torque/force can be limited to a percentage of the maximum possible
axis torque. The limit value can be changed at any time, also while the axis is traversing. The
changes can be realized in the interpolator clock cycle, dependent on distance, time or on any
other variable. The "Force Control" function can also be programmed in synchronized actions.
The function can be permanently activated, or block related.
Programming
Syntax
FOCON[<axis>]
FOCOF[<axis>]
FOC[<axis>]
Meaning
Parameter
FOCON:
FOCOF:
FOC:
<axis>:
Example
Program code
N10 FOCON[X]
N20 X100 Y200 FXST[X]=15
N30 FXST[X]=75 X20
N40 FOCOF[X]
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Meaning
Activate torque/force limiting
Deactivate torque/force limiting
Activate non-modal torque/force limiting
Channel axis name, type: AXIS
Comment
; Modal activation of the torque limit
; X travels with reduced torque (15%)
; Changing the torque to 75%,
; Disable torque limit
F1: Travel to fixed stop
6.2 Detailed description
311