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

Page 26

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

OM-842 Page 22

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Contents Description OM-842162074BProcesses From Miller to You Table of Contents Page Arc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can killFlying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion Buildup of GAS can injure or killPrincipal Safety Standards EMF Information About PacemakersUN Choc É Lectrique peut tuer Signification des symbolesConsignes DE Securite Lire Avant Utilisation LES Fumé ES ET LES GAZ peuvent ê tre dangereuxLE Bruit peut affecter l’ouïe LE Soudage peut provoquer un incendie ou une explosionDES Particules Volantes peuvent blesser les yeux ’EMPLOI Excessif peut Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessuresConsignes relatives aux stimulateurs cardiaques Principales normes de sé curitéInformation sur les champs é lectromagné tiques Remote 4 Socket Information InstallationConnecting Remote Pendant Or Equivalent User-Wired Control Pulse signal, and for a wire feeder User Relay ContactsSetting DIP Switch SW1 Rocker Switch Settings = On = OffControls Safety EquipmentOperation Work ClampDigital Display Mode Selector SwitchAmmeter And Voltmeter Right/Increase Push Button Program/Run/Reset Keyed SwitchParameter Select Push Button Left/Decrease Push ButtonShielding Gas Purge Push ButtonRemote Pendant Weld Sequence Introduction to ProgrammingGeneral Balance ControlModes Of Operation Automatic Mode SequenceSemi-Automatic Mode Sequence Start Level Not Shown Time & level programmedWeld/Peak Initial Current C Final SlopeSlope Current B Weld/PeakInitial Current C Final Slope Current B Current D Preflow Semi-Automatic 4 Mode Sequence Weld/Peak Initial C Current D Final SlopeSlope Current BPreflow Postflow Smaw ModeWeld/Peak Initial Current B Final Slope Slope Initial Slope Weld/Peak Current Final Slope Final CurrentProgramming Automatic Mode Procedure Up To Pulse Mode SelectionProcedure With Pulse Mode On, Pulses Defined In Time Values N a L Procedure With Pulse Mode On, Pulses Defined As a FrequencyProcedure Following Pulse Mode Definition S T F L O WO P Semi-Automatic ModeA R T E R E M O T E T O A R T# 0 X I N I T I a L P S = X X X Procedure With Pulse Mode On, Pulses Defined As a Frequency O P B U T T O N D E T E C T X X X X X X XManual Gtaw Mode R R E N T C O N T R O L X X X X# 0 X a R C C O N T R O L R C E N T a G E = 0 0 0 % Smaw ModeEditing a Program Linking Programs Dry Run FeatureStop Watch Feature N K P O S I T I O N X X X X X X XO G R a M L I N K M O D E Combining ProgramsM B I N E M O D E M B I N E P O S I T I O N X X I S X X X X X XSequence of Operation Gas Tungsten Arc Welding Gtaw In The Automatic ModeShared Initial Procedure Gas Tungsten Arc Welding Gtaw In The Semi-Automatic ModesOperation Procedures For Semi-Automatic 3 Mode Operation Procedures For Semi-Automatic 1 ModeOperation Procedures For Semi-Automatic 2 Mode Operation Procedures For Semi-Automatic 4 ModeGas Tungsten Arc Welding Gtaw In The Manual Mode Operation Procedures For Semi-Automatic 5 ModeExecuting Combined Programs Shielded Metal Arc Welding SmawExecuting Linked Programs Shutting DownIntroduction DiagnosticsOverheating Protection RAM Test Diagnostics ProgramProgramming Push Button Tests Program/Run/Reset Keyed Switch Tests Repeating Test DisplaysOutput Selector Switch Test Mode Selector Switch TestPurge Push Button Test W O R K I N G O P E R L YE a S E T U R N K N O B T O R G E B U T T O N S T+10 Volt DC Reference Test Gas Solenoid Relay Test Background Relay TestArc Starter Relay Test User RelaysR E M O T E Remote Pendant TestM O T E P E N D a N T S T S H D E C R E a S E B U T T O N R E M O T ECurrent Detect Test Input Contactor TestP U T C O N T a C T O R D E T E C T E D P U T C O N T a C T O R I S T D E T E C T E DElectrical Diagrams Circuit Diagram For Remote PendantWiring Diagram For MPC Module Circuit Diagram For Welding Power Source And MPC SC-182 947-B Parts List Main Assembly078 010 Dia Part Mkgs Description QuantityNAMEPLATE, order by model and serial number 158 110132 Page Page Page Page Service SupportMiller Electric Mfg. Co Model Name Serial/Style Number Purchase DateDistributor Address City State Zip

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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