EXCEL-ARC 500, 6045
4-2
August 22, 2005
4.05 Overload Indicator
This unit is equipped with an overload indicator - yellow
L.E.D. When lighted, indicates that the machine has
shutdown as a result of amperage overload or
overtemperature.
To reset the overload indicator, release the gun trigger
switch. If the indicator light goes out, the indication was
due to amperage overload. If the light does not go out,
the indication was due to an overtemperature condition.
The unit will not weld until the overtemperature condition
has dissipated and the light goes out. If the light comes
on repeatedly or often, then investigate for the cause of
overload or overtemperature and take steps to correct
the causes.
Some causes of overload are:
1) Gun contact tip shorted to workpiece.
2) Diameter of filler wire too large for machine rating
can cause overload to trip on weld starts.
Some causes of overtemperature are:
1) Exceeding current rating and/or duty cycle rating of
machine.
2) Blocked or restricted air inlets or outlets to machine.
JP1 - Wire Sharpening:
Jumper in UP position
(1-2 shorted)
ON
Jumper in DOWN
position (2-3 shorted)
OFF
JP5 - Burnback:
Jumper in UP position
(1-2 shorted)
OFF
Jumper in DOWN
position (2-3 shorted)
ON
JP7 - MIG Hot Start:
Jumper in UP position
(1-2 shorted)
OFF
Jumper in DOWN
position (2-3 shorted)
ON
Factory setting is burnback ON.
Factory setting is hot start OFF.
Factory setting is wire sharpening ON.
NOTE: For wire sharpening to work, "Burnback"
Table 4-1: Configuration Settings
4.06 Configuration Settings
The following settings (Table 4-1) can be made by jumper
plug changes on the main control board. Explanation of
settings:
1. Thewire sharpening feature is used to reduce the size
of the ball left on the end of the wire at the completion
of a weld. The wire sharpening circuit will reduce the
voltage below the value required to maintain an arc,
but sufficient to burn off the end of the wire. Arc
starting will be improved by reducing the size of the
ball left on the wire.
NOTE
In order for this circuit to work properly the
MIG gun must be held in place as the trigger
is released. If the MIG gun is pulled back as
the trigger is being released, the circuit will
not have the opportunity to reduce the size of
the ball left on the wire.
2. The burnback feature willmaintain contactor closure
for approximately .25 seconds after the gun trigger is
released. The primary function of this feature is the
prevention of wire sticking to the weld puddle
uponcompletion of aweld. This is especially important
at higher wire feed speeds with feeders that have a
tendency for wire coasting. If wire sharpening is OFF
then the arc voltage during the burnback time will be
at the preset weld voltage. If wire sharpening is ON
then the arc voltage will be reduced to a lower value
to reduce the ball on the end of the wire.
3. The hot start feature provides a higher open circuit
voltage for the initial arc strike in MIG. The primary
purpose of this feature is to provide more energy
during the start for larger diameter wires athigh wire
feed speed. This feature if enabled, is only active for
MIG.
Содержание 6045 EXCEL-ARC
Страница 6: ......
Страница 28: ...EXCEL ARC 500 6045 2 10 August 22 2005...
Страница 34: ...EXCEL ARC 500 6045 3 6 August 22 2005...
Страница 52: ...EXCEL ARC 500 6045 6 10 August 22 2005 Art A 06070 24 4 Figure 6 3 Parts 3...
Страница 54: ...EXCEL ARC 500 6045 6 12 August 22 2005...
Страница 76: ...EXCEL ARC 500 6045 A 22 August 22 2005...
