Programmable Feedrate Override - Siemens SINUMERIK 840D sl Function Manual

MD12070 $MN_OVR_FACTOR_SPIND_SPEED [<n>] (evaluation of the spindle override
switch)
Effectiveness of the "Spindle override":
● With active G33, G34, G35:
● With active G63:
● With active G331, G332:
Reference to spindle override
The spindle override can refer to the speed or the programmed speed limited by the machine
or setting data. The setting is realized via:
MD12080 $MN_OVR_REFERENCE_IS_PROG_FEED (override reference velocity)
Limiting the override factor
For binary-coded override factors, the maximum possible overrides for path feedrate, axis
feedrate and spindle speed can be limited:
MD12100 $MN_OVR_FACTOR_LIMIT_BIN (limit for binary coded override switch)
Override active
For overrides that have been enabled, the specified override values entered via the machine
control panel become immediately active in all operating modes and machine functions.
Override inactive
An override factor of 100% is internally effective if an override is not activated. The override
factor at the NC/PLC interface is not evaluated.
An exception is the zero setting for a binary interface and the 1st switch setting for a gray-
coded interface. In these cases, the override factors entered at the NC/PLC interface are
evaluated. For a binary interface, the override factor is always 0%. For a gray-coded interface,
the value entered in machine data for the 1st switch position value is output as override value.
It should be populated with 0.
17.4.3

Programmable feedrate override

Function
The "Programmable feedrate override" function can be used to change the velocity level of
path and positioning axes via the part program.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Effective
Not effective
Effective
V1: Feedrates
17.4 Feedrate control
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