V1: Feedrates
17.4 Feedrate control
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
1391
"Spindle stop" DB31, ... DBX4.3
IS "Spindle stop" (DB31, ... DBX4.3) is used to stop the relevant spindle.
17.4.3
Feedrate override on machine control panel
General
With the feedrate override via the machine control panel, the user can locally increase or decrease the path
feedrate at the machine as a percentage with immediate effect. To achieve this, the programmed feed rates are
multiplied with the override values available at the NC/PLC interface.
The feedrate can be changed axisspecifically for positioning axes.
The spindle override is used to modify the spindle speed and the cutting rate (
G96
,
G961
).
With a feedrate change, the axial acceleration and velocity limits are maintained. There are no contour errors
along the path.
The feedrate override can be changed separately for path and position axes.
The overrides influence the programmed values or the limiting (e.g.
G26
,
LIMS
in spindle speed).
The feedrate override is inactive when the function "Rigid tapping" (
G63
) is active.
Channel-specific feedrate and rapid traverse
For feedrate and rapid traverse override, dedicated enable signals and correction/offset factors are available in
the NC/PLC interface:
DB21, ... DBX6.7 (feedrate override active)
DB21, ... DBB4 (feedrate override)
DB21, ... DBX6.6 (rapid traverse override active)
DB21, ... DBB5 (rapid traverse override)
The override factors can be specified from the PLC either in the binary or gray-coded format. This format being
used is communicated to the NC via the following machine data:
MD12020 $MN_OVR_FEED_IS_GRAY_CODE (path feedrate override switch gray-coded)
MD12040 $MN_OVR_RAPID_IS_GRAY_CODE (rapid traverse override switch gray-coded)
The following permanent assignment applies to binary code:
Activation of the "Spindle stop" function
Active in
G33
,
G34
,
G35
Effective
(may cause contour deviations depending on
dynamic characteristics)
For active
G63
Effective
In active
G331
,
G332
not functional
Содержание SINUMERIK 828D Turning
Страница 34: ...Basic Functions 34 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 146: ...A3 Axis Monitoring Protection Zones 2 6 Data lists Basic Functions 146 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 328: ...F1 Travel to fixed stop 6 5 Data lists Basic Functions 328 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 816: ...K2 Axis Types Coordinate Systems Frames 10 9 Data lists Basic Functions 816 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 1198: ...P4 PLC for SINUMERIK 828D 14 6 Function interface Basic Functions 1198 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 1752: ...Appendix 20 2 Overview Basic Functions 1752 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 1774: ...Glossary Basic Functions 1774 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...