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1 - 39 S tudent Guide SIPLACE X Edition 09/2005 7 T win-Head 39 7.6.2 T rack signals head axes The track signals undert ake the main control functi on in the case of th e new drive concept of the HF machine. They are res…

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Student Guide SIPLACE X
7 Twin-Head Edition 09/2005
38
7.6.1.1 Overview positioning time for the Twin- head
7
Please Note: (Z-Axis)
The positioning time for the Z-axis with the current mode and force sensor have no direct inference
to the function.
In order to check this functions please use an oscilloscope and for the mode force sensor a special
PCB board with force sensor. 7
Please Note: (D-Axis)
The positioning time for the left and right rotation of the D-axis could be a little bit different, but this
time is not critical in case of the placement sequence of the TWIN- head. 7
Axis Mode / Distance / Positioning time
Z Positioning absolut,
free space /
Distance 100000 digits = 50000 µm
(Resolution 0,5µm)
84ms +/-3ms
Z Current mode (to measure force)
into calibration tool pocket,
518 nozzle
Distance 92000 digits =46000 µm,
force 2N
ca. 240ms *
*see note below
Z Force sensor (o measure force)
into calibration tool pocket,
518 nozzle
Distance 46000 µm,
force 13N
ca. 240ms *
*see note below
D 10000 digits = 10 degree 90ms +/-10ms*
*see note below
D 90000 digits = 90 degree 150ms +/-20ms*
*see note below
D 180000 digits = 180 degree 190ms +/-20ms*
*see note below
Table 7.6 - 1 Positioning time for TWIN- head
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Student Guide SIPLACE X
Edition 09/2005 7 Twin-Head
39
7.6.2 Track signals head axes
The track signals undertake the main control function in the case of the new drive concept of the
HF machine. They are responsible for the exact and precise positioning of the axes and are used
as only response of the closed-loop control system so that the track signals have an important
influence on dynamics of the axes.
7.6.2.1 Test set up
Fig. 7.6 - 2 General test set up to check the analoge track signals TWIN- Z-axis
The analoge track signals of the TWIN- head Z-axes are measurable on the incremental encoder.
Please Note:
The digital track signals of the TWIN- head can only be measured on the axis test box.
The track signals of theTWIN head D-axes can only be measured as digital signals on the axis
test box. 7
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Student Guide SIPLACE X
7 Twin-Head Edition 09/2005
40
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Fig. 7.6 - 3 Digital track signals TWIN- head axes at axis test box
Please Note:
The Zero pulse at axis tester is inverted to the digital zero pulse from the ’Schmitt Trigger’. 7