Gantry Axes" Function; Definition Of A Gantry Grouping - Siemens SINUMERIK 840D sl Function Manual

G1: Gantry axes

3.2 "Gantry axes" function

3.2 "Gantry axes" function
3.2.1

Definition of a gantry grouping

Definition
The axes of a gantry grouping are specified via the following axial machine data:
MD37100 $MA_GANTRY_AXIS_TYPE[AX1] = xy
x
y
A maximum of eight gantry groupings (gantry grouping ID: 1 - 8) can be defined. The gantry
grouping ID must be unique in all channels or in all NCUs in accordance with the assigned
axis.
In principle, a gantry grouping can be assigned any number of synchronous axes.
Example
Definition of a gantry grouping with ID=1, guide axis AX1 and synchronous axis AX2
● MD37100 $MA_GANTRY_AXIS_TYPE[AX1] = 01 (guide axis)
● MD37100 $MA_GANTRY_AXIS_TYPE[AX2] = 11 (synchronous axis)
Supplementary conditions
The following supplementary conditions apply to a gantry grouping:
● A gantry grouping must not contain a spindle.
● A synchronous axis must not be a concurrent POS axis.
● A synchronous axis must not belong to a transformation.
● A synchronous axis must not be a following axis of another axis coupling.
● A synchronous axis must not be a guide axis of another axis coupling.
● All axes of a gantry grouping must be of the same axis type, linear or rotary: MD30300
$MA_IS_ROT_AX (rotary axis/spindle)
Note
Drive optimization
At a SINAMICS S120 drive unit, a maximum of three drives can be optimized or measured
at the same time (speed controller optimization / function generator). Therefore, for a
coupling with more than three coupled drives at the same time, we recommend that these
are distributed over several drive units.
146
Tens decimal place: Type of gantry axis (guide or synchronous axis)
Ones decimal place: ID of the gantry grouping
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Special functions