Camera Positioning System WQB OPS

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Camera Positioning System WQB OPS

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1 Description

With the new WQB OPS, Weller is again demonstrating its extensive capacity for innovation in the repair sector and presents a new type of camera positioning system for the WQB 3000 rework system. Using this system all common components up to a minimum length of 3 x 3 mm can be reliably and precisely placed on circuit boards.

The heart of the positioning system is the modern FireWire^TMCCD camera with full digital data transfer. The high image resolution, the excellent image quality at high rates of movement, and very low image noise create the prerequisites for universal, precise, and ergonomic component placement. The data transfer from the camera to the PC is made in real time via the IEEE 1394a interface using the OHCI protocol. Distortion free pictures of the component to be placed can be achieved using the telecentrical objective lens, that s the prior condition for a precise component placement.

The component placing software includes a component library from which the component to be positioned is selected. New components can be very straightforwardly edited and inserted by the user.

With the aid of positioning frames displayed in the live image from the camera, both the circuit board and the component are aligned independently using the x, y and theta precision drives. On key press the positioned component will be set down automatically onto the circuit board and the vacuum be switched off. This

prevents undesired movement of the component during the lift down of the component onto the circuit board.

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2 Safety instructions

Correct usage

The camera positioning system WQB OPS is designed for placing components on circuit boards in conjunction with the WQB 3000.

Improper usage

The manufacturer accepts no liability for usage other than that described in the operating instructions, or unauthorised modifications.

These operating instructions and the descriptions contained herein are to be carefully read; the operating instructions are to be stored such that they are clearly visible near the system. In addition, the general warnings from the PC manufacturer and for the WQB 3000 apply. Failure to observe the instructions can result in accidents and injury, or damage to the health.

In accordance with the EU declaration of conformity, the WELLER WQB OPS positioning system meets the basic safety requirements of the directives 89/336/EWG und 73/23/EWG.

3 System requirements

For the usage of the positioning system, a commercial standard PC with the following features is required:

Intel Pentium with at least 1 GHz clock frequency, CD-ROM drive Min. 128 MB RAM

Operating system: WIN 2000 with SP 4 or higher, WIN XP with SP1 or higher OHCI compliant FireWire interface

Graphic card: recommended resolution 1280x1024, min. 16 bit colour

4 Commissioning

On initial commissioning of the camera system, it is imperative that you proceed in accordance with the following instructions. The complete installation of the positioning system is described in detail, set-by-step, in chronological order.

4.1 Items supplied

The complete positioning system comprises the following components:

FireWire digital camera Camera connecting cable Software on the installation CD Positioning unit with precision drives

Vacuum pick up with 2 changeable vacuum inserts and hex socket wrench 1.5 AF Telecentrical high resolution objective lens

Calibration tool

RS-232 interface cable for the operation of the WQB 3000 OPS with the PC Operating instructions

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4.2 Commissioning of a FireWire interface card (optional)

If your PC is not yet equipped with a FireWire interface, you have to install a commercial standard IEEE 1394a FireWire PCI interface card. The installation of the FireWire interface card only requires a spare PCI slot. The interface card is to be fitted in the slot with the PC switched off.

A laptop without FireWire port can be retrofit with a PCMCI FireWire adapter card, but an external power supply for the camera is required. The suitable camera split cable and the appropriate power supply must be ordered separately as an accessory (see chapter 8).

Procedure:

Switch off the PC and all equipment connected to it Unplug all cables from the PC

Discharge yourself before you touch the PCI interface card, e.g., on the metal housing of the PC Open the PC housing in accordance with the manufacturer's instructions

Choose a suitable PCI expansion slot Unscrew the cover plate for the slot

Insert the FireWire interface card in an empty PCI slot in the PC

Press the adapter gently but firmly into the slot and check to see that all contacts are fully seated in the connector

Attach the bracket screws that secure the card to the chassis

Close the PC housing in accordance with the manufacturer's instructions Re-fasten all cables to the PC

Switch on the PC and all equipment connected to it

When re-booting the PC, a new multimedia controller is automatically detected by the Device Manager. The installation of the related driver is described in more detail in section 4.4.

4.3 Commissioning the camera

Connect the camera on the positioning unit to the PCI interface card using the special cable supplied.

Ensure that the connections are made properly. Via the cable the camera is supplied with power (12 V), the image data is transferred, and the camera is controlled.

In principle it is also allowed to connect and disconnect the camera with the system running. It is not necessary to re-initialise the camera.

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4.4 Installation of the "Weller OPS" image processing software

The complete installation of all software components for the "Weller Optical Placement System" image processing software included on the CD-ROM supplied is performed in three stages:

Installation of the driver for the FireWire interface card Installation of the image processing software

4.4.1 Installation of the driver for the FireWire interface card

Insert installation CD in the drive on the PC

Open Hardware wizard on the PC:

START MY COMPUTER PROPERTIES HARDWARE DEVICE MANAGER

When you follow the instructions from the Hardware wizard, a search is performed for the appropriate driver for the FireWire interface card. This is on the installation CD in the following folder:

:\WELLER_OPS\boifcW98W2k

Once the installation has been completed, the following entry appears in the Device Manager. The driver for the FireWire interface Baumer 1394 Device 1 has been activated.

:\WELLER WQB OPS\FireWire Interface Driver

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4.4.2 Installation of the image processing software

The SETUP program for the installation of the image processing software is also on the CD-ROM, in this case in the folder:

Start the SETUP program and follow the instructions on the screen. Following completion of the installation an icon for the positioning software user interface is added to the desktop on the PC.

4.5 Problems during the installation

If you had to install a FireWire interface card in your PC, the card is a "Plug and Play" card, i.e. the image processing software can be started following the installation of the hardware and software components.

Due to the large variety of available mother boards, BIOS chip sets and graphics cards, it can, however, not be excluded that in isolated cases problems may occur during or after the installation. Proceed as follows:

Has the interface card been fitted to the PC in accordance with the instructions?

Is the camera connected?

Is the camera connecting cabled inserted?

Has the image processing software been installed without problems?

If necessary, you can order a reference list using the service telephone number from chapter 7.3.2, which contains hardware components tested with our camera system.

5 Using the "Weller OPS" software 5.1 Introduction

The "Weller OPS" software is a user interface that was developed especially for the WQB OPS camera positioning system for positioning surface mounted components.

Emphasis was placed on large, easy to use buttons and a clear structure so as to minimise the time required for familiarisation with the software. In the following a description of the user interface is given, as well as a description of all functions.

This software was developed for the FireWire camera series FWX and also for the older CX camera series in conjunction with the PCI-4129 interface card, and only works with this configuration.

:\WELLER WQB OPS\OPS Setup

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5.2 Layout of the user interface

The screen for the "Weller OPS" user interface is laid out as shown in Fig. 1:

Fig. 1: General overview, Weller OPS Menu bar

Here you will find all the general functions for using the program. The individual commands are described in section 5.4.1.

Toolbar

Here you will find buttons for using the program. This toolbar can be toggled on and off. The individual commands are described in section 5.4.2.

Image area

Display of the current (live or snapshot) image, adjusted to the image window and at the zoom set.

Dialog bar

You can access all functions for controlling the camera using the dialog bar.

Tool bar

Dialog bar

Image area Menu bar

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5.3 Commissioning the digital camera (only CX camera series)

A connected FireWire camera is automatically detected and initialised by the software. The following choice is only valid for a connected camera of the CX series.

The first time the program is started, there is no camera set up for image acquisition. Using the Special command, you can choose the camera type in the Settings dialog box. To open (initialise) the camera, you must make mark it (with a blue background) on the list and click the "OK" button.

The selected camera is then always opened each time the program is started.

Following camera types are supported:

CX05c Colour Digital camera with standard resolution CX13c Colour Digital camera with high resolution For information on the installation of the camera, see section 4.4.

5.4 Description of the menu bar and the toolbar 5.4.1 Menu bar

Component Library

New

Opens the New Component dialog box in which you can configure a new component.

Package dimensions Pitch

Number of soldered connections in x and y Ball diameter

Pad dimensions on the circuit board Rotation of the component

Line width of the frame in pixels Component name

"Save saves the values for a new

component

"Cancel interrupts the function

"OK" accepts the settings and opens

the component.

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Open

Opens a dialog box in which you can select already defined components.

Choose the component and mark it. Once the component has a blue background, you can accept the selection using the "OK" button.

Delete

Deletes the component with a blue background Edit

Opens the "Edit Component" dialog box in which you can change the entries for the selected component.

Cancel

Closes the dialog box without accepting the component selection.

OK

Accepts the selected component

Package dimensions Pitch

Number of soldered connections in x and y Ball diameter

Pad dimensions on the circuit board Rotation of the component

Line width of the frame in pixels Shows the component selected

"Cancel interrupts the function

"OK accepts the changes

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View

Show Toolbar

Using this function the toolbar can be toggled on and off.

Snap

A single image (single image acquisition) is taken and displayed.

Live

Continuous acquisition and display of the incoming image data. The image data is transmitted in real time to the memory in the PC via DMA. The image calculation and display frequency depend on the PC resources.

Zoom

Switches to a magnifying glass in the image area. If the left mouse button is pressed, the area around the magnifying glass is enlarged. If the mouse button is clicked again, the area is enlarged again.

Using the right mouse button the zoom can be undone step-by-step. When the function is deactivated with the Zoom button, the full image is displayed again. The Zoom factor, which adjusts the degree step between each Zoom step, is being regulated in the menu Special Settings.

Special

Camera Adjustment

The mechanical adjustment of the positioning unit (centre of the camera) to the centre of the soldering head on the WQB 3000 is performed in the factory. The Camera Adjustment function provides an additional digital adjustment that can be performed when required. This function must be used when the positioning system is commissioned for the first time. Proceed as follows:

Insert calibration plate in the WQB 3000 circuit board holder

Lock soldering head in the centre of the unit and align the cross-wires on the calibration plate with the centre of the soldering head using the circuit board holder precision drives

Unlock soldering head and move the positioning unit to the centre of the unit

To determine the conversion factors from image pixels to millimetres, the Calibration routine must be run (see section 5.5).

On the activation of the Camera Adjustment function, a blue cross marks the original centre of the image. The red cross is positioned exactly on the cross-wires in the camera image using the mouse and accepted by clicking the left mouse button. The positioning frames are now drawn around this new image centre.

Digital adjustment is only possible in a range of 2 mm from the centre of the image. In case of larger deviations, mechanical adjustment is required. On this topic, see section 7.1.

The function is only available in the "Live" mode and is password protected. The password is fixed and is WELLER.

Settings

Opens a dialog box in which you can choose the camera type and that also provides information on all destination folders. The scale is also displayed after a calibration has been performed. The degree step during zooming can be adjusted with the Zoom Factor. The colours for the frames F1 and F2 can be set in accordance with the Windows default. All settings are applied using "OK".

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Exit

Quits the program. All values set are saved and loaded again the next time the program is started.

Help

Here the "About" dialog box is displayed.

5.4.2 Toolbar

Open Image File

Opens a saved image, at the same time the program is switched to the Snap Shot mode.

Save

Enables image files to be saved. Visible frames are also saved. When the "Save" button is clicked the destination folder is displayed and the name of the file can be entered. When "Save"

is clicked a text file is opened to which user data can be written. The text file is saved in the

destination folder set (see Settings) under the same image name. The image formats BMP and JPG (default) are available (see also Save in the dialog bar). When images are saved in the JPG format, a dialog box appears in which the image compression can be defined: "low" highest possible

compression, "best" lowest possible compression.

Open Component Library

Opens a component library from which the required component entry can be selected. See also section 5.4.1 under Component Library "Open".

Select the camera type

Path information on where the related files are saved. By default the installation directory is entered.

Pixel to millimetre ratio after the calibration

Colour selection for the frames F1, F2 Factor of the Zoom function

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Print

Prints the image currently displayed in the image area.

Live

Continuous acquisition and display of the incoming image data. The image data is transmitted in real time to the memory in the PC via DMA. The image calculation and display frequency depend on the PC resources.

Snap Shot

A single image (single image acquisition) is taken and displayed. A new image is displayed when the button is clicked again.

Zoom

Switches to a magnifying glass in the image area. If the left mouse button is pressed, the area around the magnifying glass is enlarged. If the mouse button is clicked again, the area is enlarged again. Using the right mouse button the zoom can be undone step-by-step. When the function is deactivated, the full image is displayed again.

Frame F1

Draws the frame F1. This is centrally positioned around the positioning cross. If a calibration has not been performed following installation, this button is not available. The size of the frame depends on the data for the component selected.

Frame F2

Draws the frame F2. This is centrally positioned around the positioning cross. If a calibration has not been performed following installation, this button is not available. The size of the frame depends on the data for the component selected.

The F1 and F2 buttons only become available when a calibration has been performed following installation. The calibration affects the matching of the frame to the component represented and must therefore be performed very accurately.

5.5 Description of the dialog bar

Shutter Mode

Using this function the exposure time for the camera can be increased or decreased manually. Usage of this function disables the Autoshutter.

The exposure time is changed by pressing the plus or minus button.

The step sizes are preset depending on the camera type. The current exposure type is displayed between the plus and minus buttons, with the addition of "Manual".

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Autoshutter

The camera automatically adjusts the exposure time such that an adequate image is displayed. On the usage of the manual shutter mode this function is automatically disabled.

The exposure time set is displayed between the plus and minus button for the Shutter Mode function, with the text "Auto" (see description of the Shutter Mode function).

Zoom

Switches to a magnifying glass in the image area. If the left mouse button is pressed, the area around the magnifying glass is enlarged. If the mouse button is clicked again, the area is enlarged again. Using the right mouse button the zoom can be undone step-by-step. When the function is deactivated, the full image is displayed again

Save

Enables image files to be saved for documentation purposes. Visible frames are also saved. When the "Save" button is clicked the destination folder is displayed and the name of the file can be entered. When "Save" is clicked a text file is opened to which user data can be written. The text file is saved in the destination folder set (see Settings) under the same image name. The following formats are available:

BMP format

JPG format (default)

When a file is saved a dialog box appears in which you can define the compression applied to the image:

"low" highest possible compression, "best" lowest possible compression.

Gamma

The gamma value of an image is a measure of its contrast and brightness. By correcting the gamma value you can straightforwardly adjust both these variables simultaneously. The default value set is 1.0. You can adjust the value by moving the slider or clicking the arrow keys. For correct analysis of the image data, a gamma of 1.0 should always be chosen.

If gamma is greater than 1.0 or less than 1.0, some of the system resources are used for performing this function, this will reduce the image rate.

Gain

You can regulate the gain of the camera signal using the slider. The value set is displayed. The higher the gain, the greater the noise in the image (interference at individual pixels) and the poorer the quality of the image.

It can be necessary to increase the gain if there is insufficient light for the display of an adequate image (e.g. if the exposure time cannot be further increased, is undesirable due to the lower image rate, or if the smallest aperture is already set on the camera).

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Options

Draws the frame F1. This is centrally positioned around the positioning cross. If a calibration has not been performed following installation, this button is not available. The size of the frame depends on the data for the component selected.

Draws the frame F2. This is centrally positioned around the positioning cross. If a calibration has not been performed following installation, this button is not available. The size of the frame depends on the data for the component selected.

The F1 and F2 buttons only become available when a calibration has been performed following installation. The calibration affects the matching of the frame to the component represented and must therefore be performed very accurately.

Opens a dialog box in which the calibration is described. When you click the "OK" button, a cross becomes visible in the image field. This cross must be positioned on the first scale point required and the cross set by clicking the left mouse button. Keep the mouse button pressed and drag to the second scale point. When the cross is in exactly the correct position, release the mouse button. A dialog box now appears in which the length information in mm for the area measured is entered. This process must be performed a second time for confirmation; the calibration is completed with "Finish". The average value for the two measurements gives the conversion factor for pixels into millimetres.

Attention: You must work with vary precisely during calibration, as this function affects the generation of the positioning frames. For this purpose use the length scale on the calibration plate supplied.

White Balance

Due to the type of image sensor used in the camera, the original image data has a green cast. For this reason a white balance should be performed. During this process the colour channels RGB (red, green, and blue) are adjusted automatically. This function is enabled by clicking the White Balance button.

A white surface is ideal for adjusting the colour channels. This function is only available for colour cameras.

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Colour

This function opens a dialog box in which optimised image representation can be activated and the RGB colour values (red, green, and blue) can be changed individually by the user.

These functions are only available for colour cameras, to change the RGB colour values, Enable must be selected.

If the "Use color transformation" function is selected, some of the system resources will be used for performing this function, this will reduce the image rate.

Optimised display of colours

RGB colour values

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6 Positioning components with the WQB 3000 OPS 6.1 Initialising the positioning unit

After desoldering a faulty component, the soldering head is unlocked by pushing the button on the left of the base frame and moved to the left idle position. The positioning unit is now carefully moved to the working position (centre of the unit) at moderate speed and automatically locked.

6.1.1 Selecting the camera objective

The positioning system is delivered factory side with a telecentrical high resolution objective lens (3), type 2.

Nearly all common SMT components can be placed with it reliable.

Object area in mm

FWX05c FWX08c FWX14c

Objective Primary Magnification

CX05c - CX13c

1 0,12 53 x 40 44 x 33 -

2 0,14 45 x 34 34 x 25 63 x 47

3 0,26 24 x 18 18 x 13 34 x 25

The objective (3) together with the camera (1) is bolt to the base unit with the clamping ring (14).

6.1.2 Selecting the vacuum insert

2 different vacuum inserts are available for universal placement of components of varying size. The vacuum pick up (10) is fitted to the rotating ring (7) on the positioning unit (4) such that it is flush with the flange surface and locked using the clamping screw in the rotating ring. For this purpose use the hexagonal socket wrench 1.5 mm AF supplied. The desired vacuum insert (11) is screwed onto the lower end of the vacuum tube until block.

Vacuum insert

Diameter in mm

Recommended component dimensions in mm

1 12 42 to 20

2 7 20 to 8

The vacuum inserts of type 1 and type 2 have an O-ring that provides optimal suction of the components. When using this type ensure that the O-ring is perfectly flat in the shoulder on the vacuum mount.

For the positioning of very small sized components, the vacuum pick up can be used directly without insert.

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6.1.3 Adjusting the automatic set down of the component

The automatic set down of the component onto the circuit board simplifies the positioning and prevents undesired movement of the component. The depth stop must be once precisely adjusted to the height of the component to be positioned for the correct usage of this function. Proceed as follows:

Put a sample component onto the placement area

Lower down the positioning unit onto the device of the depth stop (12) using the operating lever (2) With the means of the adjustment spindle (14) the depth stop is adjusted, so that the vacuum pick up touches the component without any force. With a counter clockwise rotation of the spindle, the depth stop will be corrected downwards

By pressing the right button in the base frame of the WQB 3000, the vacuum at the vacuum pick up is activated and the positioning unit is raised up pneumatically. The component can now be adjusted freely floating over the circuit board (for more information see section 6.5)

Another key press on the right button lowers the component back to the circuit board and time delayed the vacuum is switched off. After another time delay the positioning unit is lifted up and the component remains on the circuit board

With the aid of the operating lever (2), the positioning unit is lifted up to the upper idle position

6.2 Calibrating the camera system

After changing the objective the camera system must be re-calibrated in relation to the generation of the positioning frames. During the calibration a conversion factor from image dots in the camera (pixels) to a measure of length (mm) is calculated. The calibration process is explained in more detail in the description of the software in section 5.5.

6.3 Selecting components from the library

The type of component to be positioned is selected from the Component Library. If the component is not yet saved in the library, the related parameters are saved in a new entry in the component library. For more information see section 5.4.

6.4 Positioning the circuit board

The circuit board on which the components are to be positioned is placed in the WQB 3000 circuit board holder and approximately aligned with the centre of the positioning unit, and then clamped. By clicking the Frame F2 button the positioning frame F2 is shown on the live image from the camera. With the aid of the precision drives for the circuit board holder, the pad layout on the circuit board is now positioned exactly within this frame in the x and y direction.

With the aid of the zoom function, the accuracy of the positioning within the frame can be checked and, if necessary, adjusted.

6.5 Positioning the component

By pressing the right button in the base frame of the WQB 3000, the vacuum will be activated. The

component to be positioned is picked up from the tray or other container approximately in the middle of the vacuum mount on the positioning unit (11). Lower the positioning unit to the depth stop (12) using the operating lever (2).

By clicking the Frame F1 button the positioning frame F1 is shown on the live image from the camera. With the aid of the precision drives on the positioning unit, the edges of the component are exactly aligned with the frame in the x and y direction (5) (6) and for theta rotation (8).

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For SMT components with a large number of pins with soldering connections around the outside such as QFP, PLCC, etc., the component can be placed directly by means of lead-to-pad alignment.

The positioning unit is lowered onto the circuit board by pressing again the right button in the base frame.

After a time delay the vacuum will be switched off and the positioning unit is lifted upwards. The component is now exactly placed on the circuit board.

With the aid of the operating lever (2), the placement head is raised, unlocked and moved away from the working position. The component can now be soldered in place using the soldering head on the WQB 3000.

Positioning the circuit board:

The pad layout is exactly within the red positioning frame F2

Positioning the component:

The component is within the yellow positioning frame F1.

Component and circuit board are now positioned accurately with respect to each other.

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7 Troubleshooting and maintenance 7.1 Mechanical adjustment of the camera

If it was not possible to digitally adjust the camera to the centre of the soldering head, the position of the camera must be mechanically re-adjusted. Proceed as follows:

Loose carefully the 2 cylinder head screws M3 that join the clamping ring (14) with the cantilever arm of the base unit

Start the "Weller OPS" image processing software and choose the Camera Adjustment command as described in section 5.4.1

The blue cross in the live image must be brought as close as possible to the cross-wires on the

calibration tool by rotating and moving the complete clamping ring. Afterwards tighten again the clamping ring with the cantilever arm

Finish the Camera Adjustment command

Rotate the objective with camera within the clamping ring, if the corners of any displayed positioning frame didn t lay exactly on the diagonals of the calibration tool

Repeat the Camera Adjustment command once more

The adjustment must be made with great care by a suitable trained specialist.

7.2 Checking the stroke of the positioning unit

After the camera is adjusted mechanically, the stroke of the positioning unit must also be checked. This has already been performed in the factory and only needs to be repeated in case of re-adjustment.

Fit vacuum insert type 2 into the vacuum pick up of the positioning unit Select "CALIB" component from the component library and show frames F1.

Operate precision drives in x and y direction to the end stop in both directions by rotating the knobs (5) and (6). The vacuum inserts should always be in the related end position within the frame F1.

If the adjustment ranges of the vacuum pick ups vary excessively from the middle position, the rotating ring on the positioning unit can be re-adjusted using the 2 cylinder screws M4 x 12 (7) such that the vacuum insert is as far as possible in the middle. Minor variations from the centre of the positioning can be tolerated.

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7.3 Maintenance

7.3.1 Common maintenance hints

We recommend cleaning the dust from the objective with ionised air and a soft brush at regular intervals (at least once a month). Clean the glass filters fitted using optics cleaning tissues and pure alcohol

(Isopropanol).

Protect the camera from:

Incorrect handling

Dust / fit dust protection cover immediately if an objective is not fitted Moisture and damp

Acids, alkalis and caustic materials Radioactive radiation

Oil and grease

Keep the mechanical parts as far as possible free of dust and dry. The threaded spindle for the depth stop can be re-lubricated as required using an oil spray. The linear guides on the positioning unit are lubricated for life in the factory and do not required any further care.

7.3.2 Repair and upkeep

Repairs on the positioning system are allowed to do only by the producer. In case of repairs, please use the following Weller service address:

Cooper Tools GmbH Tel. (0049) 7143 580 0

Customer Service Fax. (0049) 7143 580 179

Carl-Benz-Str. 2 D 74354 Besigheim

8 Accessories (optional)

LED illumination module for WQB OPS 587 55 767

White ring light with particular Fresnel lens for exceptional bright, reflection free and homogenous illumination of the placement area. Interfering light influences by the surrounding lighting will be disabled.

The illumination module can be easily retrofit.

FireWire split cable 6/4 587 55 770

Separate camera connecting cable, if the system will be used with a Laptop

Power supply 12V 587 55 771

External power supply for the FireWire camera using the system with a Laptop

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9 Appendix 9.1 Technical data

Camera:

Standard resolution FWX05c

Medium resolution FWX08c

High resolution FWX14c Sensor

CCD-Sensor Resolution Pixel size

Image frequency

½ Progressive Scan 780 x 582

8,3 x 8,3 µm² 25 Hz

1/3 Progressive Scan 1034 x 776

4,6 x 4,6 µm² 19 Hz

2/3 Progressive Scan 1392 x 1040

6,7 x 6,7 µm² 15 Hz

Colour filter RGB Bayer Matrix

Optical Interface

Objective C-Mount

Ambient conditions Operating temperature Storage / transport Humidity

+ 5 °C to + 50 °C -10 °C to + 70 °C

10 % to 90 %

Positioning unit:

Dip depth of the vacuum pick up approx. 30 mm

Precision drives x and y direction 5 mm

Theta adjustment 15 °

Positioning accuracy Objective type 2 0.1 mm

Objective type 3 0.07 mm

Total weight WQB 3000 OPS 43 kg

WQB OPS 2 kg

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9.2 Figures

1 Digital camera 2 Operating lever 3 Telecentrical objective 4 Positioning unit

5 Precision drive, x adjustment 6 Precision drive, y adjustment 7 Connecting screw, rotating ring

8 Operating lever theta adjustment 9 LED illumination module (optional) 10 Vacuum pick up

11 Insert for vacuum pick up 12 Device depth stop 13 Objective clamping ring 14 Adjusting spindle, depth stop

Camera Positioning System WQB OPS