HEIDENHAIN iTNC 530 HSCI - Measurement and Parameterization

690 HEIDENHAIN Technical Manual iTNC 530 HSCI
Measurement and
parameterization
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
•Deviation
Δs = signal 1 – signal 2
Z