Siemens SINUMERIK 840D sl Function Manual page 1252

S1: Spindles
16.4 Configurable gear adaptation
is only enabled when a new gear stage is defined
that is not the same as the current actual gear stage.
If NC/PLC IS:
DB31, ... DBX18.5 (oscillation speed)
is simply set by the PLC without a new gear stage being defined by the NC,
the spindle does not change to oscillation mode.
Oscillation mode is activated with NC/PLC IS:
DB31, ... DBX18.5 (oscillation speed)
.
Depending on NC/PLC IS:
DB31, ... DBX18.4 (oscillation via PLC)
while the function is in operation, a distinction is made between:
● Oscillation via NCK
● Oscillation via PLC
● Oscillation with FC 18
References:
Function Manual, Basic Functions; PLC Basic Program (P3)
Oscillation time
The oscillation time for oscillation mode can be defined in a machine date for each direction
of rotation:
Oscillation time in M3 direction
(referred to as t1 in the following):
Oscillation time in M4 direction
(referred to as t2 in the following):
Oscillation via NCK
Phase 1:
NC/PLC IS:
DB31, ... DBX18.5 (oscillation speed)
accelerates the spindle motor to the speed (with oscillation acceleration) defined in machine
data:
MD35400 $MA_SPIND_OSCILL_DES_VELO (oscillation speed)
.
Start direction is defined through the following machine data:
MD35430 $MA_SPIND_OSCILL_START_DIR (start direction with oscillation)
The time t1 (or t2) is started
according to which start direction is given in the machine data:
MD35430 $MA_SPIND_OSCILL_START_DIR
The time - and not the fact that the oscillation speed is reached - is always decisive.
Phase 2:
1252
MD35440 $MA_SPIND_OSCILL_TIME_CW
MD35450 $MA_SPIND_OSCILL_TIME_CCW
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions