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B-3
OPERATION
GENERAL DESCRIPTION
The IDEALARC DC-1000 is an SCR-controlled, three
phase, welding and cutting power source. It uses a
single range potentiometer to control:
• Submerged Arc Semi-Automatic or Automatic
Welding
• Open Arc Semi-Automatic or Automatic Welding
• Air/Carbon Arc Cutting (Carbon Rod Sizes up to
5/8” [15.9 mm ] Diameter)
• With the addition of the 500 ampere output termi-
nal on models code 9500 and above, GMAW pro-
cedures can be performed.
The IDEALARC DC-1000 has a three-position
Welding Mode Switch to enable the user to operate in
one of three modes:
• Constant Voltage (CV) Innershield®
• Constant Voltage (CV) Submerged Arc
• Variable Voltage (VV) - Constant Current (CC)
Submerged Arc
The IDEALARC DC-1000 can be easily connected to
wire feeding equipment, including:
• Semi-automatic wire feeders LN-7, LN-8, and
LN-9
• Automatic wire feeders NA-3 and NA-5
• Tractors LT-56 and LT-7
RECOMMENDED PROCESSES AND
EQUIPMENT
The IDEALARC DC-1000 is recommended for the fol-
lowing welding or cutting processes within its output
capacity of 140 amps to 1250 amps (625 amps at 500
amp output stud) in the Constant Voltage mode, and
140 amps to 1250 amps in the Variable Voltage
(Constant Current) mode:
• Submerged Arc Semi-Automatic or Automatic
Welding
• Open Arc Semi-Automatic or Automatic Welding
• Air/Carbon Arc Cutting (Carbon Rod Sizes up to
5/8” [15.9 mm] Diameter)
OPERATIONAL FEATURES AND
CONTROLS
The IDEALARC DC-1000 comes with the following
standard controls:
• DOUBLE ON/OFF PUSH BUTTON (Main Power
and 115V Auxiliary)
• OUTPUT CONTROL POTENTIOMETER
• OUTPUT CONTROL SWITCH (Remote or
Machine Control)
• WELDING MODE SWITCH
• CONTROL CIRCUIT POLARITY SWITCH
• POWER SOURCE PILOT LIGHT
• DC AMMETER (OPTIONAL)
• DC VOLTMETER (OPTIONAL)
DESIGN FEATURES AND
ADVANTAGES
The following list of design features will help you
understand the machine’s total capabilities and how
you can take advantage of them to get maximum use
of your machine.
• Excellent arc characteristics for optimum constant
voltage submerged arc and Innershield® welding
performance.
• A control circuit designed to provide good starting
for a large variety of processes and procedures.
• Output Control Potentiometer that provides easy
single range continuous control.
• Output Control Switch that provides simple switch-
ing from local to remote control.
• Red neon pilot light to confirm that the Input
Contactor is energized.
• Auxiliary power source to provide 115-volt AC
power (1000 VA) to wire feeding equipment.
• Multi-functional terminal strip for easy connection
of wire feeding control cables and switching
between CV Innershield® and CV Submerged Arc
welding when using the Dual Process or Dual
Procedure Kits.
• Recessed output terminals to help prevent any
person or object from accidentally coming into
contact with the output current. These terminals
are prominently labeled positive and negative for
easy identification.
• Thermostatically protected power source.
• Electronic protection circuit to protect power
source against overloads.
• Input line voltage compensation to provide an
essentially constant output.
• SCR electronically controlled welder output pro-
vides extra long life, especially for highly repetitive
welding applications.
IDEALARC DC-1000
B-3