N1500i FACS Manual
32
Part No. 729-110-053 V.1.03
© 2018 Nelson Stud Welding, Inc. All rights reserved.
3.5 N1500i Weld Cycle Timing
This section explains how the N1500i controls weld current, timing, and the
weld gun. It further explains what factors affect drop time.
For short cycle welding, the gun drop time and plunge time are critical
components in the weld timing, so they must be configured,
understood, and used correctly to get the optimum results.
Here are the relevant settings for welding on the N1500i:
•
F31
– Drop time. Use this function to measure \ configure the
drop time of the gun. While viewing this function (that is, with
F31 on the display), attempt a weld. The gun will lift and drop,
but no weld current will pass. The
gun’s drop time is measured,
stored, displayed, and used in weld timing as will be described
later in this document.
•
F2
– Plunge short circuit on-time. This is the time that the weld
current continues after the stud is calculated to have hit the
workpiece.
•
Front Panel Time
– This is the (weld) time set on the front panel.
Here are some other definitions:
•
Main current time = Front panel time + Plunge short circuit on-
time (F2.) The main current time is the total time that weld cur-
rent is delivered. See below.
Under normal conditions, critical times and events throughout the main
current time can be described as:
Fully Lifted
Stud Travel
Touching Work
Front Panel Time
Drop Time
(F31)
Plunge Short
Circuit On-
Time (F2)
Actual Weld Time
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