General Description

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	OPERATION

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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.

Lincoln Electric SVM123-A service manual General Description, Recommended Processes and Equipment

Models: SVM123-A

OPERATION