Miller Electric Auto Axcess 675 manual Removing Cover and Measuring Input Capacitor Voltage

Page 41

7-3. Removing Cover and Measuring Input Capacitor Voltage

!

900 Volts dc can be present on the capacitor bus and

 

significant DC voltage can remain on capacitors

 

after unit is Off. Always check the voltage on both

Tools Needed:

inverter assemblies as shown to be sure the input

capacitors have discharged before working on unit.

 

5/16 in

 

Turn Off welding power source, and disconnect input power.

Remove cover

1Power Interconnect Board PC2

2Voltmeter

1

2

+lead to left bus terminal, − lead to right bus terminal

1

2

+lead to left bus terminal, − lead to right bus terminal

1

2

+lead to left bus terminal, − lead to right bus terminal

Measure the dc voltage across the

+bus terminal and − bus terminal on PC2 as shown until voltage drops to near 0 (zero) volts. Measure input capacitor voltage on all three inverter assemblies before proceeding.

3 Typical Bleeder Resistor

An example of a typical bleeder resistor is shown on this page.

Proceed with job inside unit.

Reinstall cover when finished.

3

Typical Bleeder Resistor

25 to 1000 ohm, 5

watt resistor

#16 AWG 1000 volts dc insulation rating, approx 3 in (76 mm) leads

802 301-B / Ref. 803 001-A

OM-201 540 Page 37

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Contents Processes OM-201 540KDescription File Advanced Manufacturing SystemsFrom Miller to You Table of Contents Warranty Arc Welding Hazards Symbol UsageElectric Shock can kill HOT Parts can cause severe burnsARC Rays can burn eyes and skin Fumes and Gases can be hazardousWelding can cause fire or explosion Flying Metal or Dirt can injure eyesFire or Explosion hazard Welding Wire can cause injuryFalling Unit can cause injury Moving Parts can cause injuryCalifornia Proposition 65 Warnings Principal Safety StandardsEMF Information About Implanted Medical DevicesUNE Décharge Électrique peut entraîner la mort Symboles utilisésLE Soudage peut provoquer un in cendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures gravesLES Fumées ET LES GAZ peuvent être dangereux LES Bouteilles peuvent exploser si elles sont endommagées LE Bruit peut endommager l’ouïeRisque D’INCENDIE OU D’EXPLO LA Chute DE L’APPAREIL peut blesserLE Soudage À L’ARC risque de provoquer des interférences Proposition californienne 65 AvertissementsLES Fils DE Soudage peuvent provoquer des blessures En ce qui concerne les implants médicaux Principales normes de sécuritéInformation EMF OM-201 540 Dimensions And Weight − InstallationSpecifications Volt-Ampere Curves Duty Cycle And Overheating100% Duty Cycle At 675 Amperes OverheatingSelecting a Location Connection DiagramMovement Do not move or operate Tipping Do not stack units. Beware of tippingRear Panel Receptacles And Supplementary Protectors Incorrect Installation Connecting To Weld TerminalsSelecting Weld Cable Sizes Socket Information Peripheral Receptacle FunctionsMotor Control Receptacle Functions Hz Three Phase Input Voltage Electrical Service GuideInput Amperes At Rated Output Normal OperatingDisconnect Device Input Power Connections Connecting Input PowerWelding Power Source Input Power Connections Touch Sensor Operation Remote Program SettingRemote Program Select Program No Output a Output B Output COperational Terms − OperationWeld StartCrater PostflowFront Panel Controls See Section Wire Type LEDProcess LED Gas Type LEDSTL Robot Abbreviations Front Panel SwitchesManufacturer Robot Abbreviation Xxxx Robot Type100 IPM 1000 IPM Robot Calibration ModeSchedule Sample Auto-Calibration Routine For Motoman Robot Robot Auto-Calibration Sample ProgramsActual Motoman Welder Condition File Weld Data Sample Auto-Calibration Routine For Fanuc RobotSample Auto-Calibration Routine For ABB Robot Pulse Reset ModeMild Steel Accu-pulseBlowing Out Inside Of Unit − MaintenanceRoutine Maintenance Shock Hazard from testing − Safety Precautions for ServicingServicing Hazards Exploding Parts can cause injuryCalifornia Proposition 65 Warnings Set Value Mode − TroubleshootingDiagnostics Indicates a trigger closed error On errorIndicates RMD demo is done Indicates an overRemoving Cover and Measuring Input Capacitor Voltage Status Diagnosis Process Control Module PC4 Diagnostic LED’sDiagnostic LED’s On Process Control Module PC4 Diagnostic LED’s On Wire Feed Module PC6 Diagnostic LED’s On User Interface Module PC7 User Interface Module PC7 Diagnostic LED’sLED32 Automation Interface Module PC9 Diagnostic LED’sLED33 Diagnostic LED’s On Automation Interface Module PC9 Input signal off from relay K6 for no arc detected Input signal on from relay K6 for arc detectedInput signal on for aux. relay energized Input signal off for aux. relay energizedModule Status LED’s Network And Module Status LED’s Network Status LED’sRed Circuit board is operating normallyTrouble Remedy TroubleshootingCircuit Diagram For Welding Power Source 1 − Electrical Diagrams198 992-G Part 1 Circuit Diagram For Welding Power Source 2 198 992-G Part 2 Circuit Diagram For 72 Pin Robot Interface 219 266-C Circuit Diagram For Peripheral/Motor Interface 219 267-B − Fig − Parts List16 − Fig Windtunnel Assembly LH And RH Windtunnel Assembly LH And RH -1Item Top Tray Assembly Rear Panel Assembly Front Panel Assembly Description Quantity Page Page Support ServiceYour distributor also gives Miller Electric Mfg. Co To locate a Distributor or Service Agency visitFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s
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