TOC

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F-45

TROUBLESHOOTING AND REPAIR

F-45

 

CURRENT TRANSDUCER TEST (continued)

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5.Turn on the V-450 PRO. Check for the correct DC supply voltage to the current transducer at plug J8. See Figure F.10.

A.Pin 2 (lead 212+) to pin 6 (lead 216-) should read +15 VDC.

B.Pin 3 (lead 213-) to pin 6 (lead 216+) should read -15 VDC.

If the DC supply voltages are not present, the control board may be faulty.

6.If both of the supply voltages are low or missing, check the associated leads between plug J8 and current transducer plug P91 and the Control Board.

7.With the V-450 PRO triggered, check the feed- back voltage from the current transducer. The current feedback voltage can be read at plug J8 on the Control Board.

A.Pin 1 (lead 211) to pin 6 (lead 216) should read 2.0 VDC (machine loaded to 250 amps).

8.If for any reason the machine cannot be loaded to 250 amps, Table F.5 shows what feedback voltage is produced at various current loads.

9.If the correct supply voltages are applied to the current transducer, and with the machine loaded, the feedback voltage is missing or not correct, the current transducer may be faulty. Also make certain that lead 211 (plug J8 pin 1) has continuity (zero ohms) between the current transducer and the control board. See the Wiring Diagram.

10.Install the right side case cover using the 3/8” nut driver.

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TABLE F.5 - CURRENT FEEDBACK AT VARIOUS OUTPUT LOADS

OUTPUT LOAD CURRENT

EXPECTED TRANSDUCER FEEDBACK

 

VOLTAGE

 

 

 

500

4.0

 

450

3.6

 

400

3.2

 

350

2.8

 

300

2.4

 

250

2.0

 

200

1.6

 

150

1.2

 

100

0.8

 

50

0.4

 

 

 

 

INVERTEC® V450-PRO

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Lincoln Electric SVM199-A service manual 500 450 400 350 300 250 200 150 100

SVM199-A specifications

Lincoln Electric SVM199-A is a highly advanced welding machine that has garnered attention for its robust features and innovative technologies. This piece of equipment is tailored specifically for professionals in the welding industry, providing a range of functionalities that enhance productivity and efficiency.

One of the standout features of the SVM199-A is its Dual Voltage Input capability. This allows for flexibility in energy sources, making it suitable for a variety of job sites and applications. Users can easily switch between 208V and 230V, ensuring that they can operate efficiently regardless of the electrical setup available.

The machine is equipped with a powerful inverter-based design that significantly reduces its overall weight without compromising performance. This technology not only increases portability but also delivers greater energy efficiency, resulting in lower operational costs. The inverter design allows for quicker arc starts and smoother operation, which is especially beneficial for intricate welding tasks.

The SVM199-A boasts advanced digital controls that simplify the operation for both novice and experienced welders. The intuitive interface allows users to easily set and monitor welding parameters, facilitating optimal settings for various materials and thicknesses. This level of control ensures consistent weld quality and minimizes the risk of defects.

Another impressive characteristic of the SVM199-A is its multi-process functionality. It supports MIG, TIG, and Stick welding, making it versatile for various applications, from thin sheet metal work to heavy-duty repairs. This adaptability is ideal for contractors and welding professionals who often switch between different welding processes.

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