Miller Electric OM-842 manual Combining Programs, M B I N E M O D E, O G R a M L I N K M O D E

Page 37

Reset follows Program Number 04. To assign Reset to a Link position, select the function and press Right/In- crease repeatedly to go beyond Program Number 04. To assign a number when Reset is displayed, select Reset and press Left/Decrease.

9.Repeat Steps 7 and 8 as needed to define the desired function for each Link position being used.

10.Select the Link Position number in the upper right cor- ner of the display, and press Right/Increase or Left/Decrease to display the number of the first Link po- sition to be executed when the program is executed.

NOTE

The Link position shown when the

Link mode is exited is the first

 

position executed when the Link

 

 

programs are run . Be sure the

 

desired Link position is showing

 

before exiting the Link mode.

 

 

11.Press Right/Increase when there are no parameters selected in the Link Position display. The repeating Link mode displays will appear.

12.Press Parameter Select while the repeating displays are shown to exit the Link mode. The display shows:

” C O M B I N E ” M O D E

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

13.If desired, use the Combine mode as explained in Sec- tion 5-10. To exit the Combine mode without using it, press Parameter Select while this display is shown. The microprocessor control will enter the Ready condi- tion.

5-10. Combining Programs

NOTE

The Combine

feature is only

available in the

following modes:

 

Automatic, Semi-Automatic 1, and

 

 

Semi-Automatic 5.

 

 

 

The Combine feature uses parameters from several programs to create a single multi-slope weld program. The first program defines preflow, initial amperage, initial to weld amperage slope, and the weld amperage. Following specified programs provide weld to weld slopes and weld times. The weld to weld slopes are calculated by the microprocessor control. The last program provides the final slope, and final amperage and post- flow values. This is useful in applications using multiple non-stop passes, such as pipe-welding with the use of a seam- tracker.

When the Combine mode is entered, three displays are re- peated in sequence, indicating that the Combine Ready condition is active. These displays must be present in order to start execution of the combined programs.

To combine programs, proceed as follows:

1.Be sure one of the proper modes is selected (see Im- portant block at beginning of this section).

2.Call up the following display (this is one of the repeating displays explained in Section 5-1F).

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

3.Press Parameter Select to increase the program num- ber beyond 4. The following repeating Link mode display appears:

P R O G R A M ” L I N K ” M O D E

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

4.Press Parameter Select to enter the Combine mode. The following repeating Combine mode displays ap- pear:

” C O M B I N E ” M O D E

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

U S E I N C / D E C B U T T O N S T O E N T E R C H A N G E S

U S E P A R A M E T E R S E L E C T T O E X I T ” C O M B I N E ”

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

<X X .>

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

C O M B I N E P O S I T I O N X X I S X X X X X X X

6.The Combine position (1 through 4) is indicated in the upper right corner. The second line indicates what function (either a program number or Reset) is as- signed to the position.

7.To change the number of the Combine position, select it and press either Right/Increase or Left/Decrease to change the value as desired. As the Combine position numbers change, the function currently assigned to that position will be displayed in the second line.

8.To change the function assigned to a Combine posi- tion, select the function and press either Right/Increase or Left/Decrease to change the value.

Reset follows Program Number 04. To assign Reset to a Combine position, select the function and press

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Contents Processes OM-842162074BDescription From Miller to You Table of Contents Page Marks a special safety message Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or killPrincipal Safety Standards About Pacemakers EMF InformationConsignes DE Securite Lire Avant Utilisation Signification des symbolesUN Choc É Lectrique peut tuer LES Fumé ES ET LES GAZ peuvent ê tre dangereuxDES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un incendie ou une explosionLE Bruit peut affecter l’ouïe LA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU’EMPLOI Excessif peut DES Organes Mobiles peuvent provoquer des blessuresInformation sur les champs é lectromagné tiques Principales normes de sé curitéConsignes relatives aux stimulateurs cardiaques Connecting Remote Pendant Or Equivalent User-Wired Control InstallationRemote 4 Socket Information User Relay Contacts Pulse signal, and for a wire feederRocker Switch Settings = On = Off Setting DIP Switch SW1Operation Safety EquipmentControls Work ClampAmmeter And Voltmeter Mode Selector SwitchDigital Display Parameter Select Push Button Program/Run/Reset Keyed SwitchRight/Increase Push Button Left/Decrease Push ButtonRemote Pendant Purge Push ButtonShielding Gas General Introduction to ProgrammingWeld Sequence Balance ControlSemi-Automatic Mode Sequence Automatic Mode SequenceModes Of Operation Start Level Not Shown Time & level programmedInitial Current C Final Slope Current B Current D Preflow Weld/PeakWeld/Peak Initial Current C Final SlopeSlope Current B Weld/Peak Initial C Current D Final SlopeSlope Current B Semi-Automatic 4 Mode SequenceWeld/Peak Initial Current B Final Slope Slope Smaw ModePreflow Postflow Initial Slope Weld/Peak Current Final Slope Final CurrentProgramming Procedure Up To Pulse Mode Selection Automatic ModeProcedure With Pulse Mode On, Pulses Defined In Time Values Procedure Following Pulse Mode Definition Procedure With Pulse Mode On, Pulses Defined As a FrequencyN a L S T F L O WA R T Semi-Automatic ModeO P 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 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 LEditing a Program Smaw Mode# 0 X a R C C O N T R O L R C E N T a G E = 0 0 0 % Stop Watch Feature Dry Run FeatureLinking Programs N K P O S I T I O N X X X X X X XM B I N E M O D E Combining ProgramsO G R a M L I N K 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 XShared Initial Procedure Gas Tungsten Arc Welding Gtaw In The Automatic ModeSequence of Operation Gas Tungsten Arc Welding Gtaw In The Semi-Automatic ModesOperation Procedures For Semi-Automatic 2 Mode Operation Procedures For Semi-Automatic 1 ModeOperation Procedures For Semi-Automatic 3 Mode Operation Procedures For Semi-Automatic 4 ModeOperation Procedures For Semi-Automatic 5 Mode Gas Tungsten Arc Welding Gtaw In The Manual ModeExecuting Linked Programs Shielded Metal Arc Welding SmawExecuting Combined Programs Shutting DownOverheating Protection DiagnosticsIntroduction Programming Push Button Tests Diagnostics ProgramRAM Test Repeating Test Displays Program/Run/Reset Keyed Switch TestsMode Selector Switch Test Output Selector Switch TestE a S E T U R N K N O B T O W O R K I N G O P E R L YPurge Push Button Test R G E B U T T O N S T+10 Volt DC Reference Test Arc Starter Relay Test Background Relay TestGas Solenoid Relay Test User RelaysM O T E P E N D a N T S T Remote Pendant TestR E M O T E S H D E C R E a S E B U T T O N 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 ListNAMEPLATE, order by model and serial number 158 Dia Part Mkgs Description Quantity078 010 110132 Page Page Page Page Support ServiceDistributor Address City State Zip Model Name Serial/Style Number Purchase DateMiller Electric Mfg. Co

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.