Siemens SINUMERIK 808D Function Manual

Function Manual
01/2017
177
18.3.2
Feedrate disable and feedrate/spindle stop
General
The "Feed disable" or "Feed/spindle stop" brings the axes to a standstill. The path contour is maintained (exception: G33
block).
Feed disable
The channel-specific interface signal "Feed disable" (DB3200.DBX0006.0) will stop all axes (geometry and special axes) in
all operating modes.
This feed disable is
not
effective if G33 is active; it is, however, active with G63, G331, G332.
Feed stop for axes in the WCS
The "Feed stop" interface signals (DB3200.DBX1000.3, DB3200.DBX1004.3, and DB3200.DBX1008.3) are used to stop the
geometry axes (axes in the WCS) during traversing in the workpiece coordinate system (WCS) in "JOG" mode.
Axis-specific feed stop
The axis-specific "Feed stop" interface signal (DB380x.DBX0004.3) is used to stop the relevant machine axis.
In "AUTO" mode: If the "Feed stop" is performed for a path axis, all the axes traversed in the current block and all axes
participating in the axis group are stopped.
Only the current axis is stopped in "JOG" mode.
The axis specific "Feed stop" is active when G33 is active (but: contour deviations = thread error!).
Spindle stop
The "Spindle stop" interface signal (DB380x.DBX0004.3) is used to stop the spindle.
"Spindle stop" is active with G33 and G63.
Note
Contour deviations = thread error!
18.3.3
Feedrate override via a machine control panel
General
The operator can use the feedrate override switch to increase or decrease the path feedrate relative to the programmed
feedrate in percent with immediate effect. The feedrates are multiplied by the override values.
An override between 0 and 120% can be programmed for the path feedrate F.
The rapid traverse override switch is used to reduce the traversing velocity when testing a part program.
An override between 0 and 100% can be programmed for the rapid traverse.
The spindle override can be used to modify the spindle speed and the cutting rate (with G96). The override can be between
50 and 120%.
The override is not permitted to exceed the machine specific acceleration and speed limits or generate a contour error.
The override acts on the
programmed values
before limits intervene.
Channel-specific feedrate and rapid traverse override
One enable signal and one byte are provided on the PLC interface for the override factor in percent for feedrate and rapid
traverse:
● IS "Feedrate override" (DB3200.DBB0004)
● IS "Feedrate override active" (DB3200.DBX0006.7)
● IS "Rapid traverse override" (DB3200.DBB0005)
● IS "Rapid traverse override active" (DB3200.DBX0006.6)

Siemens SINUMERIK 808D Specifications

General

Brand	Siemens
Model	SINUMERIK 808D
Category	Control Unit
Language	English