Welding With A Constant Voltage Power Source; Welding With A Constant Current Power Source - Lincoln Electric LN-8 SVM132-A Service Manual

B-7
FIGURE B.4 – CV-CC SWITCH
VARIABLE
VOLTAGE
PC BOARD
WELDING WITH A CONSTANT
VOLTAGE POWER SOURCE
1. Current and voltage adjustments
Amps Control — All Power Sources
Set the welding current (or wire feed speed) with
the LN-8 Amps control.
Volts Control — DC-600 Power Source
a. Set the mode switch on the power source to
CV Innersheild or CV Subarc, as required.
b. Place power source output control toggle
switch in the 'Output Control Remote' posi-
tion. Total voltage control is now at the LN–8.
OPERATION
CV-CC
SWITCH
2. Set the 'Direction of Wire Feed' switch so the
3. Adjust the electrical stickout and the actual
WELDING WITH A CONSTANT
CURRENT POWER SOURCE
1. Current and voltage adjustments
VARIABLE
VOLTAGE
PC BOARD
2. Set the 'Direction of Wire Feed' switch so the
3. Adjust the welding current and voltage while
LN-8
Volts Control — Idealarc R3S Power Sources
Set the power source to the approximate voltage
required, per the R3S instruction manual. Make
final adjustments with the LN–8 'Volts' control (or
the 'Fine Voltage Control' on the optional Line
Voltage Compensator).
Volts Control — SAM Power Sources
Set the power source for the approximate voltage
required, per the SAM instruction manual. Make
final adjustments with the LN-8 'Volts' control.
If using the variable inductance control (see SAM
instruction manual), set the SAM 'Current
Control' as desired in the 8 o'clock range.
wire feeds out of the gun.
welding current and voltage as needed.
Volts Control — All Power Sources
Set the welding voltage with the LN-8 'Volts' control.
Amps Control — CC Power Sources
a. Place mode switch in the CC submerged arc
position.
b. Place power source output control toggle
switch in the 'Output Control Remote' posi-
tion. Total current control is now at the LN–8.
Amps Control — SAM Power Sources
Set the Current Control on the power source for
the approximate current required. Make final
adjustments with the LN-8 'Amps' control.
wire feeds out of the gun.
welding as needed.
B-7