No Detection Of The Part - ABB SmarTac Applications Manual

5 Trouble shooting

5.4 No detection of the part

5.4 No detection of the part
Description
The robot never detects the part when searching. A crash results.
Possible causes
The orange LED on the SmarTac board labelled D24 Workpiece Det. Stop should
be lit when the board is activated followed by the torch making contact with the
part or fixture.
78
1 Check that the sensing surface is free of dirt, soot, etc. that would otherwise
prevent good electrical contact. Clean the cup at regular intervals. Grind any
non-conductive coatings from the part that is to be searched.
2 Activate the SmarTac board by turning doSE_SENSOR on and doWIRE_SEL
and doSE_REF off. Check that there is at least 25 VDC measured between
the torch sensing surface and the part. Ideally there should be about 38 VDC
present. A reading lower than 25 VDC indicates that there is a significant
loss that will make search results inaccurate (see
page 79). If no voltage is present, check that the SmarTac board is activating
properly (see SmarTac board activation error on page
activating correctly, check the wiring from the torch to the SmarTac board.
Also check that the ground leads on the part fixture are properly attached.
Note
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Inaccurate results on
76). If the board is
Application manual - SmarTac
3HAC024845-001 Revision: A