Lenze ETC Motion Control Manual do Utilizador descarregar pdf (Página 195)

100

101

Machine constants

Software configuration

MK_CONST_REL_MM

4.3

4.3.6

195

EDSTCXN EN 2.0

4.3.6 MK_CONST_REL_MM

This machine constant defines the input resolution in the metrical system.

1, i.e. 1 mm / unit, is used as the default. If all inputs and outputs of the

control are to be specified in mm units, enter the value 0.001.

4.3.7 MK_CONST_REL_INCH

This machine constant defines the input resolution using the inch system.

25.4 is the default value, i. e. 25.4 mm / unit. If you prefer 1/10th inch units

for the input and output of the control, enter 2.54 here.

4.3.8 MK_KONTURFEHLER

This machine constant defines the maximum permissible (calculated)

deviation [mm] from the programmed path if the profile transition is

non−tangential. Together with MK_RADIUS_B_BEWERTUNG and

MK_BAHNBESCHL, it determines to which extent the speed on the path at

a corner must be reduced if Look Ahead (G60) is switched on.

In the process, the control determines the maximum speed at a corner as

follows:

BR=

⋅

max

max.: speed at the corner [mm/s]

R: Radius of a tangential circular arc with a distance of MK_KONTURFEHLER

between the programmed reference points and the vertex of the circular arc

[mm]

B: Set path acceleration (MK_BAHNBESCHL, G201) [mm/s

]

The speed is also limited by the maximum permissible jerk (increase of

acceleration per time unit):

K/TB

⋅⋅

max

T: Time constant for the permissible increase of acceleration [s]

MK_T_BAHNBESCHL

K: Value of MK_RADIUS_B_BEWERTUNG

In general, the following applies: the smaller the value in the MC, the smaller

the resulting speed in corners and the higher the path quality. The same

applies in the reverse case.

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ama 11 Jan 2025 | 19:35:39

rasha

Lenze ETC Motion Control Manual do Utilizador Página 195

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