Nelweld Operations and Service Manual
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can be changed using special function code F46, a
function only accessible after entering the
supervisory locking password. The default value
for the supervisory password is also 1-2-3-4.
When locked, the LED on the LOCK key’s
closed-lock icon is illuminated, the displays read
time and current but adjustments cannot be made.
Most of the special functions can still be viewed
in the locked mode, however, they cannot be
modified. When unlocked, the open lock icon
LED is lit indicating that setpoints and special
function parameters may be modified.
The preset-enabled lock function provides a
different type of lock function where, while the
control panel is locked, any of the 6 presets may
be selected, but not modified, by the operator.
This feature is enabled by using special function
F111
4.6.10 Status LED Operation
The control panel has three green LED’s on the
gun diagram and function as follows:
•
Gun Coil LED – this LED is on whenever the
gun coil is energized. This LED will blink if
there is no gun connection detected. It will
blink and the Fault Icon will illuminate if the
gun coil is shorted.
•
Trigger LED – this LED is on whenever the
gun trigger is pulled or whenever the unit is
welding.
•
Contact LED – this LED is on whenever the
stud chucked in the gun is in contact with the
work.
4.6.11 Fault Icon Indicator
This indicator turns ON when a fault condition
occurs. Please refer to the troubleshooting
section of this guide for fault condition
descriptions and resolution.
4.6.12 Weld Counter
The power source has two weld counters – one
resettable and one non-resettable:
•
User Weld Counter – The User Weld Counter
keeps track of all the welds performed since
the last time the counter was reset. This weld
counter is displayed using special functions
F31, F32, and F33.
To reset the user weld counter, press and
hold the time display’s down arrow for
three seconds while viewing F31, F32, or
F33.
•
System Weld Counter – The system weld
counter keeps track of all the welds performed
during the life of the power source. It cannot
be reset without the aid of special software,
available only in the factory.
This weld counter is displayed using special
functions F34, F35, and F36. It does not roll
over this number but simply displays this
maximum value for the remainder of the life
of the power source.
In the weld counters, F31 and F34 display
millions, F32 and F35 display thousands, and F33
and F36 display hundreds of welds. This is done
because the displays cannot show more than four
digits at one time. So, if the user’s weld counter
shows F31 as 128, F32 as 932, and F33 as 067,
then 128,932,067 welds have been performed
since this counter was last reset. Each counter,
user and system, is shipped set to zero and can
record up to one billion welds.
4.6.13 Chuck Stripper
The power source model features a chuck stripper
option, which makes it easier for the operator to
pull the gun off of a welded stud. This feature is
particularly useful for studs with short chuck
engagement, such as Nelson’s capped grounding
lug studs.
When in this operating mode, after a weld is
completed, the gun coil is energized a second
time. This pulls (strips) the chuck from the
welded stud. By default, the chuck stripper
function is disabled, but can be enabled using
special function F41.
The chuck stripper has two adjustable time
parameters associated with it:
•
Chuck stripper delay time – After a weld is
completed, this is the delay time before the
gun coil is energized the second time. The
delay time allows the weld to solidify and
Summary of Contents for Nelweld 4000
Page 58: ...Nelweld Operations and Service Manual 58 7 5 Declaration of Conformity...
Page 61: ...Nelweld Operations and Service Manual 61 8 2 Base and Side Cabinet Section...
Page 65: ...Nelweld Operations and Service Manual 65 8 4 Rear Cabinet Section...
Page 67: ...Nelweld Operations and Service Manual 67 8 5 Wiring Diagram...
