Siemens SINUMERIK 840D sl Function Manual page 133

Extended functions

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Axes of the NCUb to NCUd

The NCUs that are not master NCUs have the same axes with the exception of the axes for

the drive for drums TRV and TRH. The letter designating the position must be replaced

accordingly for the NCU and axis name (a, A → b, B to d, D).

Configuration rules

The following rules were applied for the configuration described below:

● Main spindle, counterspindles and axes that are assigned to different NCUs through drum

rotation while they are operating as illustrated in the above diagram "Main spindle ..." must

be configured in an axis container.

● All main spindles of drum A are in the same container (No. 1).

● All bar feed axes of drum A are in the same container (No. 2).

● All counterspindles of drum B are in the same container (No. 3).

● All transfer axes of drum B are in the same container (No. 4).

● The main spindles HS

counterspindle ZG

for reasons of NCU equal load distribution:

NCUa HS1-STN1,

NCUb HS2-STN2, ... etc.

● Slide axes Xij, Zij are purely local axes with fixed NCU assignment.

● Slides are assigned to a dedicated channel of an NCU in each case.

Slides can therefore be moved autonomously.

Extended Functions

Function Manual, 10/2015, 6FC5397-1BP40-5BA3

and their counterspindles GS

and the bar feed axes STN

of the main spindle are assigned as follows

B3: Distributed systems - 840D sl only

Axis container required

as well as the transfer axes of the

3.3 Examples

Sinumerik 828d