00198375-02_UM_OnBoardPCB-Inspection-R18-1_DE_EN.pdf - 第56页
4 Teaching Inspection Areas at the Station 4.3 Teaching with Before Placement Inspection (BPI) 56 User Manual / Bedienungsanleitung Onboard PCB Inspection 06/2018 4.3.1 Setting the Illumination. The placement positions i…
4 Teaching Inspection Areas at the Station
4.3 Teaching with Before Placement Inspection (BPI)
User Manual / Bedienungsanleitung Onboard PCB Inspection 06/2018 55
The operator is warned if the detected solder heights differ greatly. Consider this message (1).
Nevertheless, you can start the inspection.
Tips and tricks
●
Re-teach with a better solder paste pressure.
4.3 Teaching with Before Placement Inspection (BPI)
Two things are inspected:
Lost components
●
Is there a (previously lost) component in the inspection area which does not belong there?
– This check covers the entire inspection area.
Components already placed
●
Have all components been correctly placed?
– The aim of teaching is to learn where already placed components are located. Only these
can be inspected later on.
– A typical application case is to check whether all the components in this area have been
placed before another component (e.g. shield) is placed above them.
4 Teaching Inspection Areas at the Station
4.3 Teaching with Before Placement Inspection (BPI)
56 User Manual / Bedienungsanleitung Onboard PCB Inspection 06/2018
4.3.1 Setting the Illumination.
The placement positions in the teaching area must appear bright enough. If the lighting is too dark,
a hint is displayed at the end of the Teaching wizard. The components to be inspected and their
leads (if visible) need to have a sufficiently high contrast.
NOTICE
Blue lighting
Only the "blue" lighting is available for calculating the 3D information during Before Place-
ment Inspection (BPI).
●
Area with green border = part of the component description which is to be inspected
●
Area with orange border = the area or areas which are to be taught
●
Areas with yellow border = inspection area
●
Crossed out areas with yellow border = exclusion areas
●
For further information please refer also to the Online Help.
► Click on the Next button.
4.3.2 Setting the Teaching Area
The defined teaching areas can be selected at Teaching areas.
In these teaching areas, already placed components are searched for. All components found in
these areas are included in the model and will be checked for presence during the inspection. The
height profile (that is used to recognize lost components) is teached in the whole inspection area
(except for exclusion areas) i.e. lost components are not only found in the teaching areas.
4 Teaching Inspection Areas at the Station
4.3 Teaching with Before Placement Inspection (BPI)
User Manual / Bedienungsanleitung Onboard PCB Inspection 06/2018 57
●
Areas with orange border = teaching area
●
Area with turquoise border = currently selected teaching area
Tips and tricks
●
The teaching area (light blue) should be slightly bigger than the area with the components ac-
tually is (increase tolerance area)
●
You may need to move the teaching area so that all the components to be inspected can be
reached.
●
If there are multiple components with significantly differing heights in one and the same teach-
ing area, divide the teaching areas up.
– In example 3 teaching areas – selected at Teaching area 1 to n.
► Click on the Next button.
ð The following view Define Exclusion Areas is opened.
Selecting a new, separate teaching area (optional steps)
It may happen that components that are placed too close to each other and obscured by another
component cannot not be teached (and as a result will not be inspected). In this case, you can se-
lect a new teaching area for each component that was not teached which has exactly the same
size as the component.
In this case, set the parameter Single component (identical size) to Yes. A special mode will be
activated with which, however, such components can be found.
Recommended procedure:
●
First teaching attempt with a common teaching area
●
Check: Select learnt solder deposits / components. Each component must have a blue border.
– No blue border => a separate exact teaching area for each of these components
– Message "Great height differences..." => partitioning the teaching areas
► Click on the Next button.
ð The following view Define Exclusion Areas is opened.