Tweco VA 4000 Ultra-Feed - Manual (Page 29)

ULTRAFEED VA 4000
September 18, 2012 4-1
1
3
7
8
9 10 11
4
Art # A-06982
2
5 6 12
7. ARC VOLTAGE CONTROL: This knob controls arc
voltage or pulse frequency from the power source.
The arc voltage (or pulse reference) control can be
adjusted during setup or actual welding.
8. FUNCTION TIMERS: These knobs provide timed
control over preflow/postflow gas, wire burnback
distance and spot weld time.
9. 2 STEP / 4 STEP SWITCH: This switch selects 2 Step
or 4 Step mode of operation.
10.GAS PURGE SWITCH: This switch will purge shielding
gas when pressed.
11.INCH SWITCH: This switch will feed wire at the INCH
speed (default of set speed). The feeder does not
activate the contactor on the power source. Thus,
the wire will be cold as long as the power source
outputs are controlled by the contactor
.
SECTION 4:
OPERATION
4.01 Front Panel
1. GUN SWITCH RECEPTACLE: The gun switch receptacle
accepts the welding gun control wires. The gun switch
receptacle is where a gun switch closure is inputted to
the wire feeder.
2. FAULT INDICATOR: This LED indicates a fault condition
exists. If it is flashing, a ground fault has occurred. If
it is on continuously, the motor protection circuit has
activated.
3. WIRE FEED SPEED (WFS) CONTROL:
This knob controls wire feed speed. The wire feed
speed control knob can be adjusted during setup or
actual welding.
4. WFS/AMP METER: This meter displays the wire feed
speed or amperage.
5. WIRE SPEED FORCE METER
6. VOLT METER: Displays possible restriction in liner or
tips.
Figure 4-1: Front Panel Controls and Connections