SG_FSE_SiplaceHF_HF3_00193901-05_eng.pdf - 第319页

1 - 7 S tudent Guide SIPLACE HF/HF3 Edition 09/2005 7 TWIN-Head 7 7.2.2 Reference run at D- axis Fig. 7.2 - 3 Reference run D-axis 1. Incremental glas s scale D-a xis 2. Increment al encoder 3. Zero pulse on the increm e…

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Student Guide SIPLACE HF/HF3
7 TWIN-Head Edition 09/2005
6
7.2.1 Reference run at Z axis
Fig. 7.2 - 2 Reference run Z-axis
1. Bero Z-axis up (not used)
2. Incremental scale mounted on moveable part of the Z-Axis
3. Fixed Incremental encoder
4. Zero puls on the incrementale scale (only one for Z-axis)
– Z-Axis search for the commutation point of the linear motors (in a special mode because of the
danger of a movement downwards). (A 3 phase motor move on and on when the current is
switched from 1 phase to the next one, at the correct time and in the correct sequence).
– First one of the phases is connect to the power supply. With the incremental encoder the
movement is measured.
– Than the current is switched to the next phase and this movement is measured too. The ma-
chine repeat this to check the measurement values.
– Then the Z-Axis move upwards to the Zero pulse and load the zero point correction.
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Student Guide SIPLACE HF/HF3
Edition 09/2005 7 TWIN-Head
7
7.2.2 Reference run at D- axis
Fig. 7.2 - 3 Reference run D-axis
1. Incremental glass scale D-axis
2. Incremental encoder
3. Zero pulse on the incremental glass scale
Then the D-axis (turning axis) executes the reference run.
The D-axis runs to the zero pulse of the D- axis encoder. The zero point correction value is loaded.
Depending on the polarity the D-axis turns to reference position.
TWIN-head reference run finished!
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Student Guide SIPLACE HF/HF3
7 TWIN-Head Edition 09/2005
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7.2.3 Vacuum check
– After the machine is switched ON the CAN Bus prozessor will be started and therefore the
Vacuum-, Air kiss generator will be initialized. Neither vacuum or air kiss is on the nozzle.
– The Gantry axes move the TWIN-head to the reject position.
– Over the reject box the Vacuum-, Air kiss generator switch to air kiss to reject components and
check the air kiss.
– The Vacuum-, Air kiss generator is switchted to vacuum and the open vacuum threshold is
measured. (The closed vacuum threshold is taken from SITEST calibration.)
– The pressure air is adjusted to 0 bar.
– After this the height reference run started