Lincoln Electric COMMANDER 300 IM700-D - Manual (Page 22)

B-5 OPERATION B-5
COMMANDER 300
WELDER CONTROLS (Items 9 through 14 )
9. WELD MODE & OUTPUT CONTROL
These two controls allow you to select between various
welding output slopes and adjust the desired welding
output. Refer to Table B.1 for a description of how
these two controls work.
Table B.1 Weld Mode and Output Control
Functions
1 If the WELD MODE switch is positioned between settings the pre-
vious setting is maintained until the switch is properly positioned on
a setting.
2 OUTPUT also controls O.C.V. while in the 5 sloped output ranges.
10. DIGITAL OUTPUT METERS
The digital output meters are located in the center of
the control panel between the two large control knobs.
The digital meters allow the output voltage (CV-WIRE
mode) or current (CC-STICK, 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 fea-
ture holds the display of both meters on the seven sec-
onds 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 decimal point in each display will be flash-
ing. The accuracy of the meters is + or - 3%.
11. WELDING TERMINALS SWITCH
The toggle switch on the control panel labeled
“ Weld
Terminals On ” and “ 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 “ Weld Terminals On ” position the con-
tactor is closed and the welding terminals are always “ Hot ” .
With the switch in the “ Remotely Controlled ” position the con-
tactor 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 14-pin MS connector.
When the triggering device is pressed the contactor is closed
and the welding terminals are
“ Hot ” .
When the triggering device is released the contactor is
opened and the welding terminals are
“ Cold ” .
NOTE: The new Chopper Technology control circuitry auto-
matically senses when a remote output control pot is plugged
into either amphenol. Therefore, there is no need for a local
/ remote switch.
12. 6 - PIN CONNECTOR
For attaching optional remote control equipment. When in
the CC-STICK, PIPE, and CV-WIRE modes and when a
remote control is connected to the Amphenol, the auto-sens-
ing circuit automatically switches the OUTPUT control from
control at the welder to remote control .
When using the TOUCH START TIG mode with a TIG
Module connected, the OUTPUT control is used to set the
maximum current range of the CURRENT CONTROL on the
TIG Module.
13. WELD OUTPUT TERMINALS + AND -
These 1/2 - 13 studs with flange nuts provide welding con-
nection points for the electrode and work cables. For posi-
tive 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 14 - 17 )
14. 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 rating. Refer to the
AUXILIARY POWER RECEPTACLES section in the installa-
tion chapter for further information about this receptacle. Also
refer to the AUXILIARY POWER OPERATION section later
in this chapter.
M
Sloped Output for
Pipe Welding.
Touch Start TIG
Welding
Constant Current
Output for
Fabrication and
General Purpose
Welding
Constant Voltage
Output for MIG
Wire or CORED
WIRE Welding
5 Range
Settings
90, 150, 200,
250, 300 (Max.
current on each
setting)
1 Range setting
20-200 Amps
1 Range setting
30-575 Amps
1 Range setting
14 to 32 Volts
Provides a fine
adjustment of
welding current
from
Min (1) to Max
(10) within each
range
Provides Fine
Voltage
Adjustment
Weld Mode
1
Application Output
2 M