Lincoln Electric IM763 Commander 500 - Manual (Page 22)

B-5 OPERATION B-5
10. 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 ” weld-
ing terminals.
With the switch in the
“ Weld Terminals On ” position the
contactor is closed and the welding terminals are
always
“ Hot ” .
With the switch in the “ Remotely Controlled ” position
the contactor 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
automatically senses when a remote output control pot
is plugged into either amphenol. Therefore, there is no
need for a local / remote switch.
11. 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-sensing 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 CON-
TROL on the TIG Module.
12. 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 con-
nects to the
“ + ” terminal and the work cable connects
to this “ - ” terminal. For negative polarity welding the
work cable connects to the “ + ” terminal and the elec-
trode cable connects to this “ - ” terminal.
AUXILIARY POWER CONTROLS
(Items 13 - 16)
COMMANDER 500
13. 120/240VAC RECEPTACLE
This is a 120/240VAC (14-50R) receptacle that pro-
vides 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 installation chapter for further information
about this receptacle. Also refer to the AUXILIARY
POWER OPERATION section later in this chapter.
14. CIRCUIT BREAKERS
These circuit breakers provide separate overload cur-
rent protection for each 120V circuit at the 240V recep-
tacle, each 120V receptacle, the 120VAC in the 14-Pin
connector, the 42VAC in the 14-Pin connector and (for
codes above 10838 only) battery circuit overload pro-
tection.
15. 120VAC RECEPTACLES
These two 120VAC (5-20R) receptacles provide
120VAC for auxiliary power. Each receptacle has a 20
amp total rating. Refer to the AUXILIARY POWER
RECEPTACLES section in the installation chapter for
further information about these receptacles. Also refer
to the AUXILIARY POWER OPERATION section later
in this chapter.