Starting Up Clearance Control - Siemens SINUMERIK 840D sl Function Manual

TE1: Clearance control - 840D sl only
15.5 Startup
● MD36040 $MA_STANDSTILL_DELAY_TIME[<x>] (standstill monitoring time delay)
● MD36060 $MA_STANDSTILL_VELO_TOL[<x>] ("axis/ spindle stopped" velocity/speed
threshold)
<x> = axis number of clearance-controlled machine axis
15.5.6

Starting up clearance control

Clearance sensor
The clearance sensor outputs should be connected to the I/O modules that were activated
using the following machine data:
● MD10362 $MN_HW_ASSIGN_ANA_FASTIN (I/O address of the I/O module) (hardware
assignment for the fast analog NCK inputs)
● MD10366 $MN_HW_ASSIGN_DIG_FASTIN (I/O address of the I/O module) (hardware
assignment for the external digital NCK inputs)
(See also Section " "Supplementary conditions > I/O modules (Page 597)").
Test control direction
Proceed as follows to test the control direction of the clearance control function:
● Activate the clearance control via a part program using CLC(1) (see Section "Activating
and deactivating clearance control (CLC) (Page 580)")
● Generate an input voltage, e.g. via the following synchronized action:
N100
N110
N120
N130
Figure 15-9
578
$AC_TIMER[1]=2.5
ID = 1 EVERY $AC_TIMER[1] >= 2.5 DO $AC__TIMER[1]=0
ID = 2 WHENEVER $AC_TIMER[1] < 2.0 DO $A_OUTA[6] = 100000.0 *
($AC_TIMER[1] - 1.0)
ID = 3 WHENEVER $AC_TIMER[1] >= 2.0 DO $A_OUTA[6] = 0.0
Output voltage for synchronized action
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Special functions