Lincoln Electric DC-400 manual Terminal Strip Connections, Machine and Circuit Protection

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OPERATION

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Terminal Strip Connections

 

 

Terminal strip TS2 located behind the hinged control panel on the front of the power source supplies 110-115V AC. A 10 amp circuit breaker protects this circuit. Note that this 110-115V AC is also available in the 14-pin connector on the Domestic and Export models.

To gain access to the terminal strips simply remote the six #10 sheet metal screws from the perimeter of the welder nameplate as shown below. Tilt panel for- ward so it rests in a horizontal position. See Table showing Front View of 14-Pin Connector Receptacle for lead number functions.

1

2

6

5

4

3

230V AC Auxiliary Power for Water Cooler (European and Export models)

A Continental European receptacle is located on the rear panel for supplying 230V AC to a water cooler. A

3.5amps, (2 amps below code 11277) circuit breaker which is also located on the rear panel protects this circuit from excessive overloads or short circuits.

Machine and Circuit Protection

The power source is thermostatically protected with proximity thermostats against overload or insufficient cooling. One thermostat is located on the nose of the center bottom primary coil and a second thermostat is attached to the lead connection the secondaries. Both thermostats are connected in series with 2-4 cir- cuit. If the machine is overloaded, the primary ther- mostat will open, the output will be zero, and the amber thermal protection light will be on.

The fan will continue to run. The secondary thermo- stat will open either with an excessive overload or insufficient cooling. The output will be zero and the amber protection light will be off.

IDEALARC® DC-400

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Contents Safety Depends on You Idealarc DC-400Safety Electric Shock can kill Welding and Cutting Sparks can Cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcPlease Examine Carton and Equipment For Damage Immediately On-Line Product RegistrationTAbLE of Contents Technical Specifications DC-400 Safety Precautions Input Power ConnectionsFALLING EQUIPMENT can cause Correct Operational USEInstallation of Field Installed Options Output Cable ConnectionsOutput Cables Remote Output Control K857 or K857-1 with K864 AdapterK843 Amptrol Adapter Installation Instructions K870 AmptrolMultiprocess Switch Connection and Operation Purpose Connection of DC-400 to LN-22 or LN-25Design ConnectionsMultiprocess Switch STICK, TIG or AIR/CARbON ARCSafety Precautions ELECTRIC SHOCK can killOutput Terminals Switch Rating Plate Mode SwitchVoltmeter Switch ARC Force Control DialNEMA EW 1 IEC 60974-1 Rating PlateRecommended Processes & Equipment Operational Features & ControlsGeneral Machine Description Power Source Operation and Controls Duty Cycle and Time PeriodARC FORCE CONTROL Dial Effective only in CC mode ARC CONTROL SWITCH Effective only in CV FCAW/GMAW modeOUTPUT TERMINALS SWITCH Front View of 14-PIN Connector ReceptacleTerminal Strip Connections Machine and Circuit ProtectionAuxiliary Power Connections Remote Control ConnectionsCase Features Output ConnectionsMachine & Circuit Protection Thermal Protection Light Factory Installed Options Field Installed OptionsOptional Equipment TIG OptionsAmptrol ADAPTER CAbLE K843 HI-FREQUENCY KITK799 Codes 8634 and AbOVE only Undercarriages K817, K817R, K817P K8411MAINTENANCED-1 Routine MaintenanceTROUbLESHOOTING PRObLEMS SymptomsPOSSIbLE Cause Recommended Course of ActionOutput Control Local TROUbLESHOOTING TROUbLESHOOTING Connecting the Remote Control to the Machine Fault Protection OperationPower I/0 Switch Check Output VoltagePower Diode Test Power RECTIFIER bRIDGE ASSEMbLYCHECKING PROCEDURE Power Silicon Controlled Rectifier TestDiagrams Code is pasted inside Number 400 Wiring Diagram for Codes 10859, 10880,11083Idealarc DC Wiring Idealarc DC-400 Diagram for Code 9847Code is pasted inside Number Idealarc DC-400 Idealarc DC-400 Precaucion Warnung
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DC-400 specifications

The Lincoln Electric DC-400 is a versatile and robust DC arc welding power source designed to meet the demands of various industrial applications. Known for its reliability and performance, the DC-400 is ideal for both professional welders and fabrication shops requiring robust equipment that can handle challenging welding tasks.

One of the main features of the DC-400 is its ability to provide a smooth, stable arc, which is essential for achieving high-quality welds. This welding machine is capable of delivering a wide amperage range, typically from 20 to 400 amperes, making it suitable for various welding processes, including MIG, TIG, and Stick welding. The unit's high output capabilities allow it to effectively weld a variety of materials, such as steel, stainless steel, and various alloys.

In terms of technology, the DC-400 integrates advanced power conversion technology that enhances energy efficiency while minimizing heat loss during operation. This not only contributes to lower operating costs but also ensures a longer service life for the machine. The DC-400 features a durable, rugged design, with a robust steel frame that can withstand the rigors of heavy industrial use while providing an IP23 rating for protection against moisture and dust.

Another notable characteristic of the DC-400 is its ease of use. The intuitive controls allow for quick adjustments to settings, enabling welders to easily adapt to different job requirements. The arc characteristics of the DC-400 can be fine-tuned to optimize performance for different welding applications, ensuring consistent results every time.

Moreover, the DC-400 is equipped with built-in safety features such as thermal overload protection, which prevents damage to the machine in case of prolonged operation under heavy loads. This feature enhances the safety of the operator and extends the life of the welding machine.

Overall, the Lincoln Electric DC-400 stands out as a reliable and efficient welding power source. Its combination of high-performance capabilities, advanced technology, and next-level usability makes it a popular choice in the industry. Whether for heavy fabrication, maintenance, or repair work, the DC-400 continues to prove itself as an indispensable tool for professional welders seeking quality and durability in their equipment.