TECHNICAL DESCRIPTION
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A07 Switch
for presetting, see wiring instructions on page 17.
1. Position 1 -- ”Voltage feedback”
Normally used for MIG/MAG, submerged arc welding and aluminium
welding with thin wires.
At welding voltages below 26 V the wire feed motor runs at a
constant speed, which is selected using potentiometer A 03.
Suitable for aluminium welding.
At welding voltages above 26 V the wire feed speed -- and hence
welding current -- follows variations in the welding voltage, i.e. if the
welding voltage increases so does the welding current, and vice versa.
2. Position 2 -- ”Current feedback”
Normally used for MIG/MAG, submerged arc welding and for welding
thicker aluminium.
Wire feed speed is controlled by the welding current.
The preset current is adjusted using potentiometer A 01 (see position
3 on page 5) and is independent of the wire diameter used.
3. Position 3 -- ”Presetting”
The welding current, voltage and travel speed are preset using the re-
spective potentiometers.
S The travel speed can always b e preset. Travel speed is adjusted
using the ”Speed” potentiometer A 05.
S The welding voltage can only be preset when using a welding
power source equipped with a preselector device
(order no. 365 580--880). The welding voltage is selected using po-
tentiometer V (A 03).
S The welding current can only be preset when welding with the
switch in position 2.
a. Set A 07 to position 3.
b. Select the welding current using potentiometer A (A 01).
c. Set A 07 to position 2 once all preselections have been made.
A08 Pushbutton (with yellow lamp)
used to start welding. The lamp indicates that welding current is available.
The button must be held down until the arc has been struck, i.e. until weld-
ing current is flowing.
A09 Pushbutton (red)
used to stop welding
-- Numerical display ”A”
displays average welding current in Amps, accuracy 1.5%, 3 figure display
(1000 indication + 3 figures, giving maximum 1999 A)
-- Numerical display ”V”
displays true RMS welding voltage in Volts, accuracy 1.5%, 3 figures
-- Numerical display ”Speed cm/min”
shows average travel speed in cm/min, 3 figures