HS50_advance_level 2.pdf - 第115页

Stud ent Gu ide HS-5 0 Adva nced II 07/2 002 Ed ition 4 Pneum atic 13   $ LU. LVV DW3 OD FHPH QWRU DW 5HM HFW 3RVL WLR Q 1. Air k iss is a pplie d at pl acement and reje ct po sitio ns to remove the comp on…

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07/2002 Edition Student Guide HS-50 Advanced II
4 Pneumatic
12
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1. The quality of the segment seal is checked prior to each pick up.
2. This tests the quality of the seal given by the vacuum plunger.
3. Normally the result should be within ± 20 mbar of the closed result determined during refer-
ence.
4. If a result is outside the tolerance, then the machine logs an error. If the error occurs 3 times
within 350 placements at the same segment, an error is reported "Leaky segment".
5. If this error occurs check the condition of the valve plunger.
6. The values for 20 mbar, 3 errors and 350 placements are in the vacuum.MA file.
-700
-720
-740
-760
-780
-800
-820
-840
-860
-880
-900
0
t
-920
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Student Guide HS-50 Advanced II 07/2002 Edition
4 Pneumatic
13
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1. Air kiss is applied at placement and reject positions to remove the component from the nozzle.
2. The placement pressure should be set to:
0.15 bar 71x/91x nozzles
0.20 bar 70x/90x nozzles
3. The reject pressure should be set to 0.25 bar.
200
160
120
80
40
0
t
240
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07/2002 Edition Student Guide HS-50 Advanced II
4 Pneumatic
14
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NOTE
Component on nozzle (30 mbar, tighter than open) eject in ejection position. No component on
nozzle (nozzle value almost on open) -> optimized pick - up process. Closed vacuum, new pick -
up at once
Seg.
1
Seg.
2
Seg.
3
Seg.
4
Seg.
5
Seg.
6
Seg.
7
Seg.
8
Seg.
9
Seg.
10
Seg.
11
Seg.
12
TYP
914
TYP
914
TYP
914
TYP
914
TYP
914
TYP
914
TYP
914
TYP
914
TYP
914
TYP
914
TYP
914
TYP
914
Vacuum open
Reference run -702, -703, -700, -698,
-
700, -698,
-
700, -698,
-
700,
-
701, -703, -701,
Vacuum open
measured with
component -800, -798, -805, -816,
-
720,
-
810, -730,
-
810,
-
805, -811, -799,
20% vacuum-dif-
ference 32 32 32 33 32 32 33 32 32 32 32
Vacuum closed
measured -863, -864, -863, -863,
-
863,
-
863, -863,
-
863,
-
863, -863, -863,
Vacuum closed
reference run -863, -864, -863, -863,
-
863, -832,
-
863, -863,
-
863,
-
863, -863, -863,