Miller Electric OM-842 manual Smaw Mode, Editing a Program

Page 35

5-5. SMAW Mode

NOTE

If needed, see Section 5-1B for

information on selecting and defining

aparameter.

1.Turn on welding power source, if applicable.

2.Place the Mode Selector switch in the SMAW position.

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:

# 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:

# 0 X

S T A R T L E V E L

TI M E = .X X X A M P S = X X X .X

9.If applicable, define the program number (see Section 5-1C). Define the start level time and amperage as de- sired.

When properly used, start level eases arc starting by allowing the use of an amperage value that is higher than initial amperage for a short length of time.

The range for start level time is 0.0 to 15.0 seconds, in increments of 0.1 seconds. The range for start level amperage varies from 2.0 to 400.0 amps, in increments of 1.0 amperes.

10.Press Right/Increase, and the display shows:

# 0 X

W E L D

A M P S = X X X .X

11.Define the weld current as desired.

The range for weld current varies from 2.0 to 400.0 amps, in increments of 1.0 amperes.

12.Press Right/Increase, and the display shows:

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

P E R C E N T A G E = 0 0 0 %

13.Arc control increases short-circuit amperage to help start an arc or make vertical or overhead welds.

The range for arc control is 0% to 100%, in increments of 1%.

14.Press Right/Increase, and the display shows:

C U R R E N T C O N T R O L

<X X X X X X X >

15.Pressing Parameter Select toggles the display be- tween Panel and Remote. When Remote is defined, weld amperage can be varied by a remote amperage control device up to the user-defined weld current level. When Panel is defined, weld amperage is the value de- fined as weld current.

Whichever option is showing when this display is ex- ited will be in effect. Use the Parameter Select push button to display the desired option (Panel or Remote).

16.Press Right/Increase. The microprocessor control will enter the Ready condition.

17.In the Ready condition, the microprocessor control is ready to have another program entered or to execute a program. For information on executing a program, see Section 6.

5-6. Editing A Program

To edit an existing program, carry out the following:

1.Turn on welding power source, if applicable.

2.Use the Mode Selector switch to select the mode of the program to be edited.

3.Place the Program/Run/Reset keyed switch in the Pro- gram position.

4.When the repeating displays are shown, press the Right/Increase or Left/Decrease push button until the display to be edited is shown.

5.Edit the desired parameter(s). If needed, see Section 5-1B for information on selecting and defining parame- ters. See Section 5-1C for information on changing the program number in a display to access multiple pro- grams.

6.Continue accessing displays and editing parameters until editing is complete. The newly entered parame- ters become a part of the program as soon as they are entered.

7.To lock out program changes and prepare for program execution, place the Program/Run/Reset keyed switch in the Run position.

8.To prepare for program execution while remaining in Program, press Right/Increase or Left/Decrease until the Ready condition is active (see Section 5-1F).

OM-842 Page 31

Page 34 Page 36
Image 35
Page 34 Page 36
Contents Description OM-842162074BProcesses From Miller to You Table of Contents Page Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesPrincipal Safety Standards About Pacemakers EMF InformationLES Fumé ES ET LES GAZ peuvent ê tre dangereux Signification des symbolesConsignes DE Securite Lire Avant Utilisation UN Choc É Lectrique peut tuerLE Bruit peut affecter l’ouïe LE Soudage peut provoquer un incendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peutConsignes 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 User Relay Contacts Pulse signal, and for a wire feederRocker Switch Settings = On = Off Setting DIP Switch SW1Work Clamp Safety EquipmentOperation ControlsDigital Display Mode Selector SwitchAmmeter And Voltmeter Left/Decrease Push Button Program/Run/Reset Keyed SwitchParameter Select Push Button Right/Increase Push ButtonShielding Gas Purge Push ButtonRemote Pendant Balance Control Introduction to ProgrammingGeneral Weld SequenceStart Level Not Shown Time & level programmed Automatic Mode SequenceSemi-Automatic Mode Sequence Modes Of OperationWeld/Peak Initial Current C Final SlopeSlope Current B Weld/PeakInitial Current C Final Slope Current B Current D Preflow Weld/Peak Initial C Current D Final SlopeSlope Current B Semi-Automatic 4 Mode SequenceInitial Slope Weld/Peak Current Final Slope Final Current Smaw ModeWeld/Peak Initial Current B Final Slope Slope Preflow PostflowProgramming Procedure Up To Pulse Mode Selection Automatic ModeProcedure With Pulse Mode On, Pulses Defined In Time Values S T F L O W Procedure With Pulse Mode On, Pulses Defined As a FrequencyProcedure Following Pulse Mode Definition N a LE R E M O T E T O A R T Semi-Automatic ModeA R T O P# 0 X I N I T I a L P S = X X X Procedure With Pulse Mode On, Pulses Defined As a Frequency X X X X X X X O P B U T T O N D E T E C TManual Gtaw Mode X X X X R R E N T C O N T R O L# 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 N K P O S I T I O N X X X X X X X Dry Run FeatureStop Watch Feature Linking ProgramsM B I N E P O S I T I O N X X I S X X X X X X Combining ProgramsM B I N E M O D E O G R a M L I N K M O D EGas Tungsten Arc Welding Gtaw In The Semi-Automatic Modes Gas Tungsten Arc Welding Gtaw In The Automatic ModeShared Initial Procedure Sequence of OperationOperation Procedures For Semi-Automatic 4 Mode Operation Procedures For Semi-Automatic 1 ModeOperation Procedures For Semi-Automatic 2 Mode Operation Procedures For Semi-Automatic 3 ModeOperation Procedures For Semi-Automatic 5 Mode Gas Tungsten Arc Welding Gtaw In The Manual ModeShutting Down Shielded Metal Arc Welding SmawExecuting Linked Programs Executing Combined ProgramsIntroduction DiagnosticsOverheating Protection RAM Test Diagnostics ProgramProgramming Push Button Tests Repeating Test Displays Program/Run/Reset Keyed Switch TestsMode Selector Switch Test Output Selector Switch TestR G E B U T T O N S T 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 Purge Push Button Test+10 Volt DC Reference Test User Relays Background Relay TestArc Starter Relay Test Gas Solenoid Relay TestS H D E C R E a S E B U T T O N R E M O T E Remote Pendant TestM O T E P E N D a N T S T R E M O T EInput Contactor Test Current Detect TestP U T C O N T a C T O R I S T D E T E C T E D P U T C O N T a C T O R D E T E C T E DCircuit Diagram For Remote Pendant Electrical DiagramsWiring Diagram For MPC Module Circuit Diagram For Welding Power Source And MPC SC-182 947-B Main Assembly Parts List110 Dia Part Mkgs Description QuantityNAMEPLATE, order by model and serial number 158 078 010132 Page Page Page Page Support ServiceMiller 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.
Top Page Image Contents