00196044-05 - sg x und x4i fse_en - 第372页

Twin Head Settings Calibration of Vacuum Generator on the T win Head S tudent Guide (FSE) SI PL ACE X Series and X4I T win Head Edition 01/2009 EN 372 9.4.6.2 Checking the Zero Calibration SITEST: X Select Twin Head X Se…

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Twin Head
Calibration of Vacuum Generator on the Twin Head Settings
Student Guide (FSE) SIPLACE X Series and X4I
Edition 01/2009 EN Twin Head
371
9.4.6 Calibration of Vacuum Generator on the Twin Head
The vacuum generator is part of a Twin head segment and creates the vacuum and air blast for the
pickup and placement process. The zero calibration of the vacuum generator should be performed on
initial setup at the customer site and after exchanging the vacuum generator or Twin module.
If the vacuum generator is not calibrated, incorrect threshold values will be taken to calculate the open
and closed vacuum and you could get error messages such as "No component on the nozzle or nozzle
is dirty".
With the aid of the zero calibration, we can position the vacuum generator motor in a middle or neutral
position, so that there is no air blast or vacuum present at the nozzle.
9.4.6.1 Zero Calibration of Vacuum Generator
X Start the SITEST.
SITEST:
X Select
TWIN Head
X Select
Head Board
9-15: SITEST functions - head board
X Select the required
Segment
X Close the nozzle of the appropriate Twin
module (e.g. by sealing it with your finger tip).
9-16: Correction values after zero calibration
X Select
Zero calibration pressure regulator
The dialog box on the left shows the correction
value calculated.
X Select
OK
.
The correction value will be accepted - now the
reference value equals the ambient pressure.
Twin Head
Settings Calibration of Vacuum Generator on the Twin Head
Student Guide (FSE) SIPLACE X Series and X4I
Twin Head Edition 01/2009 EN
372
9.4.6.2 Checking the Zero Calibration
SITEST:
X Select
Twin Head
X Select
Head Board
X Select
Measure Pressure
The zero calibration is performed with disabled vacuum and air blast (see Section (9.4.6.1 Zero Calibra-
tion of Vacuum Generator
J
371 ) ).
9.4.6.3 Calibrating the Closed Vacuum
SITEST:
X Select
Twin Head
X Select
Calibration functions
X Select
Calibrate closed vacuum
9.4.6.4 Checking the Pressure Tightness of the Vacuum System
X Start SITEST.
X Move the gantry so that you can easily reach the nozzle with one and the keyboard with the other
hand.
SITEST:
X Select
Twin Head
.
X Select
Head Board
.
NOTE:
The pressure deviation to the ambient pressure at 0 - mbar (zero calibration) should not exceed
+/-10 mbar.
NOTE:
The value "Vacuum closed" is measured and stored for both Twin modules.
A dialog box shows the old and the new values.
NOTE:
The term "closed vacuum" corresponds to "threshold value closed".
Twin Head
Calibration of Vacuum Generator on the Twin Head Settings
Student Guide (FSE) SIPLACE X Series and X4I
Edition 01/2009 EN Twin Head
373
9.4.6.5 Checking the Air Blast
SITEST:
X Start SITEST and move the gantry so that you can easily reach the nozzle with one hand and the
keyboard with the other hand.
X Select
Twin Head
X Select
Head Board
X Select the appropriate Twin module.
X Switch "on" the air blast.
X Close the nozzle of the appropriate segment (e.g. by sealing it with your finger tip).
X You can edit and modify the value for the air blast pressure or leave the standard value.
X Select
Measure Pressure
.
X The measured value should correspond (approx.) with the given value.
9-17: SITEST functions - head board
X Select the
Segment
.
X Switch the vacuum on and the air blast off.
X Close the nozzle of the appropriate segment
(e.g. by sealing it with your finger tip).
X Select
Measure Pressure
.
X The displayed value should be close to the
"Threshold value closed".
NOTE:
The value "vacuum closed" is determined in the
Calibrating the Twin head
==>
Calibrate
closed vacuum
.
NOTE:
The air blast value can be edited to a value between 0 and 400 mbar, with the Siemens Service
password. Default setting: 400 mbar