Hanwha SM481 PLUS Series Administrator’s Guide Eng.pdf.pdf - 第128页

6-18 Fast Flexible Placer SM481(L) PLUS Administ r ator’s Guide  <Block Selec t> combo box  For a Multi PCB The model selected from the “Boa rd Definition” dialog box is selected automatically and the corres pond…

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Board Definition

6.3. Fiducial Mark Setup

If there is a fiducial mark on the PCB, set the position of the fiducial mark and mark data.

The fiducial mark is the mark on the PCB used for recognition of the PCB distortion and

its correction. In the case of the PCB without fiducial mark, the placement accuracy is

relatively low.

When this <Fiducial Mark…> button is clicked on, the following dialog box is displayed.

Figure6.4 “Fiducial Position & Mark” dialog box

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Fast Flexible Placer SM481(L) PLUS Administrator’s Guide

 <Block Select> combo box

 For a Multi PCB

The model selected from the “Board Definition” dialog box is selected

automatically and the corresponding Combo Box is disabled.

 For a Block PCB

Select the model for which setup will be performed and set other items.

 <1. Position Type> combo box

One, two or three fiducial marks can be selected for use.

When one fiducial mark is selected, the X and Y distortion can be corrected. However,

it is difficult to correct the theta angle.

That is, it is used if the external machined section of the PCB is very precise or when

there is only one fiducial mark inevitably. Generally, 1 point fiducial is not used.

In the case of 2 fiducial marks, the X, Y and theta of the PCB can be corrected. This is

the most frequently used method.

In the case of 3 fiducial marks, they are used when the deviation of the score value is

great because the surface of the fiducial marks is unstable. If 3 fiducial marks are used,

the machine can calculate the horizontal and longitudinal position more accurately.

Here, Select the number of fiducial marks. Available numbers are as follows.

 None: Fiducial Mark.

 1 Panel: In the case of one point, the distortion of the X or Y coordinate can

be compensated.

 2 Panel: 2 fiducial marks for PCB correction.

 3 Panel: In the case of three points, only two points that obtained higher

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Board Definition

points are used selectively when compensating the distortion of the X, Y or R

coordinate of the PCB.

 4 Panel: 4 fiducial marks for PCB correction.

 1 Array: 1 fiducial mark for Array PCB correction in each Array PCB.

 2 Array: 2 fiducial marks for Array PCB correction in each Array PCB.

 3 Array: 3 fiducial marks for Array PCB correction in each Array PCB.

 4 Array: Each Array PCB has 4 fiducial marks for the calibration of the

PCB board.

It is recommended to use two panels for a general PCB and two arrays for

an array PCB.

 <2. Mark Position> group

If “None” is not selected in the <1. Position Type> combo box, data is created as many

as the number of the selected fiducial marks. For example, when “2 Panel” is selected,

the following dialog box is displayed.