Theory of operation, Welding controls – Lincoln Electric VANTAGE 400 User Manual
Page 19
THEORY OF OPERATION
B-3
B-3
VANTAGE® 400
WELDING CONTROLS
(Figure B.1)
1. OUTPUT CONTROL-
The OUTPUT dial is used
to preset the output voltage or current as displayed
on the digital meters for the four welding modes.
When in the CC-STICK, DOWNHILL PIPE or CV-
WIRE modes and when a remote control is connect-
ed to the 6-Pin or 14-Pin Connector, the auto-sens-
ing circuit automatically switches the OUTPUT
CONTROL from control at the welder to the remote
control.
In the CV-WIRE mode, if the feeder being used has
a voltage control when the wire feeder control cable
is connected to the 14-Pin Connector, the auto-sens-
ing circuit automatically makes OUTPUT CONTROL
inactive and the wire feeder voltage control active.
Otherwise, the OUTPUT CONTROL is used to pre-
set the voltage
When in the TOUCH START TIG mode and when an
Amptrol is connected to the 6-Pin Connector, the
OUTPUT dial is used to set the maximum current
range of the CURRENT CONTROL of the Amptrol.
2. DIGITAL OUTPUT METERS-
The digital meters
allow the output voltage (CV-WIRE mode) or cur-
rent (CC-STICK,DOWN HILL PIPE and TIG modes)
to be set prior to welding using the OUTPUT control
dial. During welding, the meter display the actual
output voltage (VOLTS) and current (AMPS). A
memory feature holds the display of both meters on
for seven seconds after welding is stopped. This
allows the operator to read the actual current and
voltage just prior to when welding was ceased.
While the display is being held the left-most deci-
mal point in each display will be flashing. The accu-
racy of the meters is +/- 3%.
3. WELD MODE SELECTOR SWITCH-
(Provides four selectable welding modes)
CV-WIRE
DOWNHILL PIPE
CC-STICK
TOUCH START TIG
1
9
11
20
7
4
10
5
8
12
13
15
19
6
21
14
18
17
16
2
3
FIGURE B.1