67
Tucker GmbH,
Mail / Post:
Max-Eyth-Str.1, 35394 Gießen, Germany
Stud welding unit N1500i
As of: Aug 12.2021
Manual part number: BE 1221
The Actual Weld Time is the time from the start of the main current to the time that
the stud hits the workpiece. Under normal conditions, it will be equivalent to the
Front Panel Time. This time measurement is reported after the weld is complete.
For example:
•
Front Panel Time = 50ms
•
Drop Time (F31) = 20ms
•
Plunge short circuit on-time (F2) = 50ms
The weld profile would look like this:
The resulting Actual Weld Time is 50 ms. The main current would be on for the
Front Panel Time + Plunge short circuit on-time (F2) = 50ms+50ms=100ms, but
the arc would exist only during the Actual Weld Time, or 50ms.
The important thing to note is that normally, the stud begins to drop at Front Panel
Time – Drop Time. But if the Drop Time exceeds the Front Panel Time, the stud
would need to begin to drop prior to the start of the weld in order to make the Actual
Weld Time to be the same as the Front Panel Time. This is done by releasing the gun
coil during the pilot arc stage.
For example:
Front Panel Time = 20ms
Drop Time (F31) = 30ms
Plunge short circuit on-time (F2) = 50ms
20 ms
Main cu
rrent time
Fully Lifted
Stud Travel
Touching Work
Front Panel Time
Drop Time
(F31)
Plunge Short
Circuit On-
Time (F2)
30 ms
50 ms
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