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E-2

E-2

THEORY OF OPERATION

FIGURE E.2 – BATTERY, STARTER, ENGINE, ROTOR AND STATOR

SCR/DIODE

 

OUTPUT

OUTPUT

 

 

CHOKE

BRIDGE

 

 

NEGATIVE

 

 

 

 

TERMINAL

CAPACITO

RS

CV

 

 

CV

 

TERMINAL

 

 

SHUNT

POSITIVE

TERMINAL

 

 

WINDING

S

 

F

 

 

 

B

 

WELD

 

 

FEEDBACK

E

 

 

 

E

 

 

 

 

STARTER

 

 

 

 

D

 

 

 

 

 

A

 

 

 

 

 

C

ALTERNATOR

 

 

 

 

K

ENGINE

MECHANICAL

ROTOR

 

SCR GATE SIGNALS

 

ROTATION

 

 

 

 

 

 

 

SHUTDOWN

 

 

 

 

 

SOLENOID

 

 

 

 

 

 

 

EXCITER

 

 

 

 

 

WINDINGS

 

 

 

 

IDLER

 

 

 

CV

 

 

 

 

BOARD

BATTERY

SOLENOID

 

 

 

 

 

 

 

 

42VAC

 

 

 

 

115VAC

METER

 

 

 

 

 

EXCITER

 

14 PIN

 

MAIN

 

CAPACITORS

 

REMOTE

CONTROL

 

 

AMPHENOL

 

115/230VAC

 

SWITCH

BOARD

 

 

BY-PASS

 

RECEPTACLE

 

PC

 

 

 

 

6 PIN

BOARD

 

 

 

 

AMPHENOL

 

 

 

 

 

 

FINE

 

ENGINE

 

 

 

OUTPUT

ENGINE

SENSORS

 

 

 

CONTROL

 

 

 

PROTECTION

BOARD

EXCITER VOLTAGE

FEEDBACK

BOARD

CURRENT/ MODE

SELECTOR

SWITCH

12VDC

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GENERAL DESCRIPTION

The Commander 400 is a diesel engine driven welding power source. The machine uses a brushless asyn- chronous alternating current generator for DC stick electrode welding and for 120/240 VAC auxiliary stand- by power. As a generator it can supply up to 10,000 watts of 120/240 volt AC power. As a welder it provides up to 400 amps of DC constant current output in six slope-controlled ranges. In addition a seventh general purpose welding range provides up to 575 amps of constant current welding output.

The stick and wire model has a CV terminal for con- stant voltage wire welding.

BATTERY, STARTER, ENGINE, ROTOR AND STATOR

The 12VDC battery powers the engine starter motor and supplies power to the main control board for the engine protection circuitry. The engine's alternator supplies "charging" current for the battery circuit. The battery circuit also provides power through the main

control board for the idler solenoid, which is mechani- cally coupled to the engine's throttle linkage.

The diesel engine is coupled to a brushless asynchro- nous three-phase alternating current induction genera- tor. See Induction Generators. The excitation or "flashing" voltage is developed in the exciter windings and capacitor configuration. The rotor, which is manu- factured by casting aluminum through steel lamination, is mechanically coupled to the engine. Through exci- tation of this rotating magnet, voltages are produced in the stationary windings of the stator. There are three separate and isolated sets of windings incorporated in the stator lamination. Each set has a different number of turns producing different magnitudes of AC output voltages. These three windings are the three-phase weld winding, the three-phase exciter winding; which is tapped for single phase auxiliary standby power; and the 42VAC single-phase winding, which supplies power to the main control board.

The engine protection circuit shuts the engine off in the event of low oil pressure, engine over temperature, malfunction in the engine's alternator system, or a low fuel condition.

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NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion.

COMMANDER 400

Page 50
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Lincoln Electric SVM133-B service manual Theory of Operation

SVM133-B specifications

The Lincoln Electric SVM133-B is an innovative welding machine designed to meet the diverse needs of welders and fabrication shops. This versatile equipment combines state-of-the-art technology with user-friendly features, making it ideal for both novice and professional welders.

One of the main features of the SVM133-B is its advanced inverter technology. This allows for a more efficient power delivery, which translates into reduced energy consumption and lower operational costs. The machine is capable of delivering optimal welding performance across a range of materials, from thin sheets to heavier sections, making it suitable for various applications in industries such as automotive, construction, and repair.

The SVM133-B supports multiple welding processes, including MIG, stick, and TIG welding. This flexibility ensures that users can adapt to various job requirements without needing multiple machines. The intuitive control panel allows users to switch between modes effortlessly, providing a seamless welding experience.

Another notable characteristic of the SVM133-B is its compact and lightweight design. Weighing significantly less than traditional welding machines, it is highly portable, making it easy to transport to different job sites. Additionally, its rugged construction ensures durability, allowing it to withstand tough working conditions.

The SVM133-B is equipped with advanced safety features, such as overheat and overload protection, which safeguard both the machine and the user during operation. It also includes a digital display that provides real-time feedback on settings, voltage, and amperage, which enhances precision and control during welding tasks.

Lincoln Electric has prioritized ease of use in the SVM133-B, with quick setup guides and clear instructions. This user-centric approach not only facilitates a smoother learning curve for beginners but also optimizes the workflow for experienced welders, enabling them to maximize productivity.

One of the standout features is the capability to weld aluminum with ease, thanks to its spool gun compatibility. This feature sets the SVM133-B apart from many competitors, providing added value for users who require flexibility in their welding projects.

In summary, the Lincoln Electric SVM133-B stands out in the welding machine market due to its inverter technology, multi-process capabilities, portability, and robust safety measures. It embodies the perfect blend of innovation and practicality, making it a top choice for welders looking to enhance their skills and productivity across a wide array of applications. Whether for professional use or hobbyist projects, the SVM133-B offers a reliable solution for high-quality welding tasks.