SG_FSE_SiplaceHF_HF3_00193901-05_eng - 第318页

1 - 6 S tudent 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 pa rt of the Z-Axis …

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Student Guide SIPLACE HF/HF3
Edition 09/2005 7 TWIN-Head
5
7.2 Reference Run TWIN-head
The TWIN-head consist of two segments which have 2 axes Z and D and the X and Y axes at the
Gantry.
Before you start the reference run the retract cylinder move out to the lower home position. On
both modules the vacuum is on, until the vacuum generator is initialized.
Fig. 7.2 - 1 TWIN-head Z,D- axes
1. Z-axis incremental encoder
2. Z-axis linear incremental scale
3. D-axis incremental encoder with incremental glass scale
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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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