Bad Setup | Miller Electric Axcess 450 instruction

5-5. Voltage Sensing Lead And Work Cable Connections For Multiple Welding Arcs

A. Bad Setup

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		Current Flow Path
	1	Welding Power Source	7 Workpiece
	2	Electrode Cable	This arrangement is a bad setup due to
	3	Feeder Cable	This arrangement is a bad setup due to
	3	Feeder Cable	sensing leads being directly in the current
	4	Work Cable	sensing leads being directly in the current
	4	Work Cable	flow path of the welding arc. Interaction
	5	Voltage Sensing Lead	flow path of the welding arc. Interaction
	5	Voltage Sensing Lead	between welding circuits will affect voltage
	6	Wire Feeder	drop in the workpiece. The voltage drop

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4

Ref. 804 460-A

across the workpiece will not be measured correctly for the voltage feedback signal. Voltage feedback to the welding power sources will not be correct at either sense lead and result in poor arc starts and arc quality.

OM-220 389 Page 25

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Miller Electric Axcess 450 manual Bad Setup, Wire Feeder Drop in the workpiece. The voltage drop

Contents

File Advanced Manufacturing Systems OM-220 389JProcesses Description From Miller to You Table of Contents − Troubleshooting Standards DirectivesDecstat1/07 Page HOT Parts can cause severe burns Symbol UsageArc Welding Hazards Electric Shock can kill Flying Metal or Dirt can injure eyes Fumes and Gases can be hazardousARC Rays can burn eyes and skin Welding can cause fire or explosion Moving Parts can cause injury Welding Wire can cause injuryFire or Explosion hazard Falling Unit can cause injury About Implanted Medical Devices Principal Safety StandardsCalifornia Proposition 65 Warnings EMF Information UNE Décharge Électrique peut entraîner la mort Symboles utilisés LES Fumées ET LES GAZ peuvent être dangereux DES Pièces Chaudes peuvent provoquer des brûlures gravesLE Soudage peut provoquer un in cendie ou une explosion LA Chute DE L’APPAREIL peut blesser LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées Risque D’INCENDIE OU D’EXPLO LES Fils DE Soudage peuvent provoquer des blessures Proposition californienne 65 AvertissementsLE Soudage À L’ARC risque de provoquer des interférences Information EMF Principales normes de sécuritéEn ce qui concerne les implants médicaux OM-220 389 Keep your head out of the fumes Disconnect input plug or power before working on machine− Definitions Manufacturer’s Warning Label Definitions Weee Label Manufacturer’s Rating Label Symbols And DefinitionsI1max I1eff 17-3/32 in 434 mm 17-3/8 in 441 mm 19-3/32 in 485 mm − InstallationSpecifications Dimensions And Weight Overheating Duty Cycle And OverheatingVolt-Ampere Curves 100% Duty Cycle At 450 Amperes Selecting a Location Connection DiagramDo not stack units. Beware of tipping Rear Panel Receptacles And Supplementary Protectors Incorrect Installation Connecting To Weld Terminals 50/60 Hz Network Wire Feeder Receptacle FunctionsElectrical Service Guide Pin Welding Power Source Input Power Connections Connecting Input PowerDisconnect Device Input Power Connections Selecting Weld Cable Sizes − Recommended Setup Procedures Gun TravelWCL Current Flow Path Welding Circuit Best Using Multiple Welding Power Sources Wire Feeder Drop in the workpiece. The voltage drop Bad Setup Supporting separate voltage feedback to OM-220 389 Better Setup Best Setup − Operation Front Panel SwitchesPDA Port PC Port OM-220 389 Routine Maintenance − MaintenanceBlowing Out Inside of Unit Exploding Parts can cause injury − Safety Precautions for ServicingShock Hazard from testing Servicing Hazards California Proposition 65 Warnings Removing Cover and Measuring Input Capacitor Voltage − Troubleshooting Diagnostic LED’s On Process Control Module PC4 Process Control Module PC4 Diagnostic LED’sStatus Diagnosis Circuit board is operating normally Network And Module Status LED’s Network Status LED’sModule Status LED’s Red Trouble Remedy Troubleshooting Circuit Diagram For Welding Power Source − Electrical Diagrams 220 420-B 16 − Fig − Parts List Windtunnel Assembly LH And RH Windtunnel Assembly LH And RH -1Item Top Tray Assembly Rear Panel Assembly Front Panel Assembly Dia Part Your distributor also gives ServiceSupport Your distributor and/or equipment manufacturer’s To locate a Distributor or Service Agency visitMiller Electric Mfg. Co For assistance in filing or settling claims, contact