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1 - 67 S tudent Guide SIPLACE X Edition 09/2005 6 Coll ect &Place-Head 6/12 67 6.4.10.3 Adjustment s of Air Pressure V alues with the Compress ed Air T esting Device Fig. 6.4 - 15 Flow chart determining air pressure …

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Student Guide SIPLACE X
6 Collect &Place-Head 6/12 Edition 09/2005
66
6.4.10 Air Pressure Values
6.4.10.1 Tools and Devices
– A set of slotted screw drivers
– Compressed air testing device
6.4.10.2 Adjustment of Air Pressure Values
6
Fig. 6.4 - 14 Adjustment of air pressure values
LEGEND:
(1) Forced air unit
(2) Solenoid valve for air kiss
(3) Adjustment valve for the reject circuit
(4) Adjustment valve for the pick - up / placement circuit
Please Note
:
Use a nozzle type 904 or 914 to adjust the air kiss. Please press in the spring from the nozzle
interface during the measurement and read the value from the display. 6
4
1
2
3
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Student Guide SIPLACE X
Edition 09/2005 6 Collect &Place-Head 6/12
67
6.4.10.3 Adjustments of Air Pressure Values with the Compressed Air Testing Device
Fig. 6.4 - 15 Flow chart determining air pressure values
Please Note:
Air pressure values, displayed on the screen of the station computer, under option "Measure air
pressure" of the "Single functions", or in the SITEST program, do not correspond to the air
pressure values actually set at the nozzles.
They solely serve to check that the forced air valve is functioning correctly.
Therefore, the air pressure may not be adjusted with the values displayed on the screen.
Instead, use only the values determined with the compressed air testing device. 6
➠ Adjust to the values of the table below:
Air kiss function
circuits
Adjustment with Compressed Air
Testing Device
Measurement taken on Nozzle
Displayed on the Monitor:
(Only in Pick - Up and Placement
Circuit)
pick - up / placement
circuit
150 mbar (100 - 200 mbar) e.g.: 250 mbar
reject circuit
(not used for reject at
HFand X machine) 250 mbar (200 - 300 mbar) reject circuit does not have a sensor
Blast air “ON”
Placement and pick - up circuit
Select appropriate head
Collect & Place Heads
Start SITEST
Use compressed air testing device and
restrictor valve to adjust compressed air
Blast air “OFF”
End
Press the nozzle up, during the
measurement procedure
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Student Guide SIPLACE X
6 Collect &Place-Head 6/12 Edition 09/2005
68
Please Note:
The adjustment for the reject circuit is not necessary on the HF/Siplace X machine.
Please Note:
Both forced air circuits are controlled by a single valve and therefore are mutually dependent.
Using two different restrictor valves, it is however possible, to adjust differing pressure values for
each circuit. 6
➠ Repeat these adjustments several times, as the pick - up / placement circuit are mutually
dependent.
Please Note:
Make sure that the test sensor tube is attached air - tight on the nozzle. 6
6.4.11 Other Mechanical Adjustments on the Star
➠ Insert the blast air transition tubes so that they will protrude 0.7 mm from the surface of the
circular arc guide.
Please Note:
The blast air tubes at the valve plungers should be at a distance of 0.2 mm from the encoder
of the DP-axis. 6