Measurement And Parameterization - HEIDENHAIN iTNC 530 HSCI Technical Manual

Measurement and
parameterization
690
The compensation values can be ascertained via the control, by setting up a
pure display axis or with an appropriate external encoder. Preparations for
determining the compensation values for CTC:
Create a suitable measurement program:

Linear movement in one axis at very high feed rate for high acceleration
Example for Y axis:
L Y100 F10000
L Y0 F10000
Set up the required encoders and configure them.

Example: KGM grid encoder setup for measurement of cross talk in Y/Z
plane
Configure the axes of the grid (W in the example) as display axis.

Determine the compensation values:
Select the signals that are to be recorded with the integrated oscilloscope

or TNCScope. The signals to be recorded must be differentiated depending
on the cross talk:
Measure the deviation perpendicular to the accelerated axis (cross talk):

• Actual acceleration of the exciting axis
• Position value of the TCP in the direction of the axis to be compensated
(transverse direction)
Determine the deviation in the direction of the accelerated axis:

• Actual acceleration of the exciting axis
Two signals must be recorded to determine the deviation:
• Signal 1: Position value of the TCP in the direction of the axis to be
compensated (in this case this is the exciting axis)
• Signal 2: Position value of the position encoder of the axis to be
compensated
Δ
• Deviation s = signal 1 – signal 2
Z
HEIDENHAIN Technical Manual iTNC 530 HSCI