Operation – Lincoln Electric COMMANDER SVM145-B User Manual
Page 23
10. DIGITAL OUTPUT METER: The digital output
meters are located in the center of the control
panel between the two large control knobs. The
meters allow the output current level to be set prior
to welding in stick mode and voltage level to be set
prior to welding in the wire modes. During the
welding process the meters display the actual
output current and voltage, within +1%, -10%
accuracy.
11. WELDING TERMINALS SWITCH: The toggle
switch on the control panel labeled “WELDING
TERMINALS ALWAYS ON” and “WELDING TER-
MINALS REMOTELY CONTROLLED” is used to
control the operation of the “solid state contactor”
which allows for the selection of “Hot” or “Cold”
welding terminals.
With the switch in the “WELDING TERMINALS
ALWAYS ON” position, the contactor is closed and
the welding terminals are always “Hot.”
With the switch in the “WELDING TERMINALS
REMOTELY CONTROLLED” position, the contac-
tor operation is controlled by an Amptrol, Arc Start
Switch or some other type of triggering device
through the use of a control cable connected to
the 6-pin or 14-pin MS connector.
When the triggering device is pressed the contac-
tor is closed and the welding terminals are “Hot.”
When the triggering device is released the con-
tactor is opened and the welding terminals are
“Cold.”
12. LOCAL/REMOTE SWITCH: The toggle switch on
the control panel labeled “LOCAL/REMOTE” gives
the operator the option of controlling the output at
the welder control panel or at a remote station.
For remote control, the toggle switch is set in the
“REMOTE” position. For control at the welder
control panel, the toggle switch is set in the
“LOCAL” position.
13. 6 - PIN CONNECTOR: The 6-pin connector locat-
ed on the control panel allows for connection of
interfacing equipment.
14. WELD OUTPUT TERMINALS + AND – : These
1/2 - 13 studs with flange nuts provide welding
connection points for the electrode and work
cables. For positive polarity welding, the electrode
cable connects to the “+” terminal and the work
cable connects to this “-” terminal. For negative
polarity welding, the work cable connects to the
“+” terminal and the electrode cable connects to
this “-” terminal.
AUXILIARY POWER CONTROLS
(Items 15 through 19)
15. 120/240VAC RECEPTACLE:
This is a
120/240VAC (14-50R) receptacle that provides
240VAC or can be split for 120VAC single-phase
auxiliary power. This receptacle has a 50-amp rat-
ing. Refer to AUXILIARY POWER RECEPTA-
CLES in the Installation section for further informa-
tion about this receptacle. Also refer to AUXIL-
IARY POWER OPERATION later in this section.
16. 50 AMP CIRCUIT BREAKERS: These circuit
breakers provide separate overload current protec-
tion for each 120V circuit at the 240V receptacle.
17. 120VAC RECEPTACLES: These two 120VAC (5-
15R) receptacles with GFCI protection provide
120VAC for auxiliary power. These receptacles
have a 20 amp total rating. Refer to AUXILIARY
POWER RECEPTACLES in the Installation section
for further information about these receptacles.
Also refer to AUXILIARY POWER OPERATION
later in this section.
18. 15 AMP CIRCUIT BREAKERS: These circuit
breakers provide separate overload current protec-
tion for each 120VAC receptacle.
19. GROUND STUD: Provides a connection point for
connecting the machine case to earth ground for
the safest grounding procedure. Refer to
MACHINE GROUNDING in the Installation section
for proper machine grounding information.
20. 15 AMP CIRCUIT BREAKER: This circuit breaker
provides overload protection for the 120 VAC cir-
cuit in the 14-pin connector.
21. VOLTMETER +/- SWITCH: Changes the polarity
display on the wire feeder.
22. 15 AMP CIRCUIT BREAKER: This circuit breaker
provides overload protection for the 42 VAC circuit
in the 14-pin connector.
23. 14-PIN CONNECTOR: For quick connection of
interfacing equipment.
24. ARC CONTROL: The “ARC CONTROL” poten-
tiometer is active in two modes: “STICK/TIG” and
“WIRE WELDING” with different purposes in each
mode.
“STICK/TIG” mode: In this mode, the “ARC CON-
TROL” knob sets the short circuit current during stick
welding. Increasing the number from 1 to 10 increas-
es the short circuit current. This prevents sticking of
the electrode to the plate at low welding current set-
tings. This also increases spatter. It is recommended
that the control be set to the minimum number without
electrode sticking.
OPERATION
B-7
B-7
COMMANDER 300