NOTE

The program number in a display can

be increased by pressing Parameter

 

Select while any of the repeating

 

 

displays are shown. This allows

 

other programs to be accessed.

 

 

1.The first repeating display indicates the program num- ber and that the microprocessor control is ready for program execution. The display shows:

P R O G R A M # 0 X

U S E R E M O T E T O S T A R T

The next repeating display scrolls into view.

U S E I N C / D E C B U T T O N S

T O C H E C K P A R A M E T E R S

2.This display indicates that the Right/Increase and Left/ Decrease push buttons can be used to access the displays and verify parameter values.

The next repeating display scrolls into view.

5-2. Automatic Mode

NOTE

If needed, see Section 5-1B for

information on selecting and defining

 

a parameter.

 

 

 

 

 

NOTE

Weld output options, such as the use

of pulsing, high frequency, and ac or

 

dc output, affect how a program is

 

 

entered in the Automatic mode. Be

 

sure to follow all applicable steps,

 

and only the applicable steps, as

 

determined by the selected options.

 

 

A.Procedure Up To Pulse Mode Selection

1.Turn on welding power source, if applicable.

2.Place the Mode Selector switch in the Automatic posi- tion.

3.Place the Program/Run/Reset keyed switch in the Re- set position, and then in the Program position. The initial displays will be shown.

4.When the repeating displays (explained in Section 5-1F) are shown, press Right/Increase.

If the Process Selector switch is in the ac output posi- tion, go to Step 5. If the Process Selector switch is in a dc output position, go to Step 8.

5.The display shows:

U S E P A R A M E T E R S E L E C T

T O C H A N G E P R O G R A M #

3.This display explains the use of the Parameter Select push button to change the program number. This al- lows the creation of more than one program per mode.

The next repeating display scrolls into view.

S E M I – A U T O M A T I C

M O D E X

4.This display is present only in the Semi-Automatic mode. The display indicates which of the five versions of Semi-Automatic is active.

The next repeating display scrolls into view.

P R O C E S S P O L A R I T Y I S

<X X .>

5.This display indicates whether the Process Selector switch is set for ac or dc output.

The first repeating display scrolls into view, and the se- quence repeats.

# 0 X B A L A N C E C O N T R O L

E N = X X % E P = X X %

6.If applicable, define the program number (see Section 5-1C). Define the electrode negative value for the ac output square wave (see Section 4-3) as desired.

The range for percentage of waveform in electrode negative is 46% to 68%, in increments of 2%.

7.Press Right/Increase, and go to Step 8.

8.The display shows:

H I G H F R E Q U E N C Y

>X X X X X X X X X <

9.Press Parameter Select to display the desired choice.

If the Process Selector switch is in the ac output posi- tion, the choices are Start Only high frequency or Continuous high frequency.

If the Process Selector switch is in a dc output position, the choices are Start Only high frequency or Disabled high frequency.

10.When the desired choice is shown, press Right/In- crease to advance to the next display. The display shows:

# 0 X

P R E F L O W

T I M E = X X .X

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Miller Electric OM-842 manual Automatic Mode, Procedure Up To Pulse Mode Selection
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OM-842 specifications

The Miller Electric OM-842 is a versatile and powerful multi-process welding machine designed for professional welders who demand efficiency and reliability on the job. This industrial-grade welder is capable of handling various welding processes, including MIG, TIG, stick, and flux-cored welding, making it an ideal choice for a wide range of applications.

One of the standout features of the OM-842 is its robust output capability. With a maximum output of 400 amps, it can tackle thick materials with ease while maintaining exceptional arc stability. This output range allows for adaptability in different welding scenarios, whether working on heavy fabrication projects or lighter home repairs.

The OM-842 is also equipped with advanced inverter technology. This technology enhances the machine's efficiency and reduces energy consumption. Inverter machines are known for their lightweight design compared to traditional transformer welders, which makes the OM-842 more portable and easier to transport between job sites.

User-friendliness is paramount in the design of the OM-842. Its intuitive control panel features a digital display that provides real-time information on parameters such as voltage and amperage. This allows users to make quick and precise adjustments on the fly, enhancing productivity and ensuring optimal welding results.

Additionally, the OM-842 offers sophisticated weld control features, such as Auto-Set, which simplifies the setup process for beginners and experienced users alike. This technology automatically selects optimal parameters based on the material type and thickness, minimizing trial and error during welding.

The machine also includes a durable and rugged design, suitable for tough working conditions. The protective case and high-quality components ensure longevity and reliability even in adverse environments.

Safety is another critical aspect of the OM-842, with features such as over-temperature protection and a built-in fan to prevent overheating during extended use.

With its powerful performance, advanced technology, and robust design, the Miller Electric OM-842 stands out as an exceptional choice for welders seeking reliability and versatility in their welding operations, ultimately creating high-quality welds across various applications. Whether in a shop or on a construction site, the OM-842 is engineered to deliver outstanding results every time.
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