User guide

4-20 Configuration and Characterization
4.12 Needle Finder Configuration
Needle-type nozzles are easily damaged or frequently changed. The Needle Finder option locates the
current location of the needle tip, compares the current location with the last measured location, and
adjusts the tool offset to maintain consistent dispensing results, prevent quality problems, and
reduce scrap.
The needle finder support in ECXP includes two programming instructions, Find Needle and Check
Needle. The instructions are located on the Needle Finder tab, which only appears when the system is
configured for a needle finder. For additional information, see Section 5 - Programming.
To setup the needle finder:
" NOTE This procedure should be done on initial setup and whenever there is a change in the
board stop location or fixed conveyor rail position, or if the needle finder is moved.
4.12.1 Single Needle Applicator
1. Click on Configure > Needle Finder Setup to open the Needle Finder Setup dialog box
(Figure 4-16).
Figure 4-16 Needle Finder Setup Dialog Box
2. Set the Tool Offset to a nominal value (a rough measurement).
3. Teach the X Beam Location by moving the needle into the X-beam. The needle finder
indicator will turn green when the needle is intersecting the laser beam. Click on the
Teach
button and follow the prompts.
4. Teach the Y Beam Location by moving the needle into the Y-beam. The needle finder
indicator will turn green when the needle is intersecting the laser beam. Click on
Teach
button and follow the prompts.
5. Configure the fixture with the single needle applicator. See 4.6 Fixture Configuration.