69
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
Since [20ms – 30ms] < 0, the, the gun coil is released prior to starting the main
current. So the weld profile would look like this:
The resulting Actual Weld Time is 20ms. The stud would still take 30ms to drop,
but the main current and main arc would only be 20ms.
6.6
Drop Time Variables
This portion of the document describes several different conditions that affect drop
time. This time duration will vary under many different conditions as outlined in the
text below.
Power Source Gun Control and Trigger Switch Circuit:
The rate in which the gun coil energy is removed plays a large part in how fast the
stud will drop. If the coil
only
has an anti-parallel diode (in either the gun itself or
inside the power source), it will drop much later than a configuration with a
diode/resistor since the energy is dissipated in the resistor after the coil is
deenergized.
Plunge Dampener:
Tranquil arc dampeners are meant to slow the rate of stud travel speed (in the
downward direction). Dampeners can adjust this rate for up to a few hundred
milliseconds of travel time.
Front Panel Time
50 ms
Main current time
Fully Lifted
Stud Travel
Touching Work
Drop Time (F31)
Plunge Short
Circuit On-
Time (F2)
10
ms
20 ms
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