77
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
Lock Mode 4:
This is a medium level security mode, whereby the user must select a
password to lock the unit. Changes may be made to the weld settings by use of the
presets
and by adjusting the time / current by a
predetermined range
. This is a
configurable percentage as defined by F57.
6.9
Plunge Current
During the stud plunge, the welder normally outputs the main arc cur- rent to keep the
arc burning until the stud is submerged into the weld pool, and continues to output the
same main arc current for sometime after the short circuit. In some applications, it is
desirable to set a cur- rent level different than the main arc current during plunge. For
these applications, enable F46 to use a different current level, then set the plunge
current level using F47.
Potential benefits are reduced cable and connector heating which reduces down time
for production, energy savings, and providing fine tu- ning for spatter / splatter
reduction, non-ferrous metal welding, flash ring shape and uniformity in short cycle or
trim stud applications. In mass production, a lower plunge current can be more
tolerant to gun speed variation or drift during its service life, because the total arc
energy variation as a result of gun speed variation is reduced.
The example below shows a 730A main current changing to 350A plunge current (green
line) shortly before the short circuit represented by arc voltage collapse (red or darker
line).
Voltage
F46 = ON (Enabled)
Current
