Miller Electric and DS-74DX16 manual Diagnostics, There is a two-position DIP, Indicates a trigger

Page 33

7-2. Diagnostics

3

1

2

1

LED3 On Right Side Motor

 

Control Board PC1

 

2

LED3 On Left Side Motor

 

 

Control Board PC101

 

3

LED4 On Dual Board PC70

. There is a two-position DIP

switch S1 located on motor con- trol boards PC1 and PC101. These switches are factory-set in the off position and must re- main in that position for the unit to operate correctly.

803 063-A

.Note: The error messages

are shown on the upper and lower displays to indi- cate specific errors. Ex- planations are in the text below:

Left Side Motor Control Board PC101

ERR

 

 

ERR

 

 

ERR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COM1

 

 

TRG1

 

 

TCH1

 

 

 

 

 

 

 

Indicates a com-

 

 

Indicates a trigger

 

Indicates a

munication error.

 

 

error.

 

tachometer error.

Right Side Motor Control Board PC1

 

 

 

 

 

ERR

 

 

ERR

 

 

ERR

 

 

 

 

 

 

 

 

 

 

 

 

 

COM2

 

 

TRG2

 

 

TCH2

 

 

 

 

 

 

 

Indicates a com-

 

 

Indicates a trigger

 

Indicates a

munication error.

 

 

error.

 

tachometer error.

Dual Board PC70

ERR

Indicates a

COM3 communicationerror.

ERR

MTR1

Indicates a motor error.

ERR

MTR2

Indicates a motor error.

Error Indications

Error conditions are indicated by LED3 on PC1, PC101, and LED4 on PC70. To view LEDs, turn Off unit, remove wrapper, and turn unit On.

The LED blinks in a 2.5 second cycle. The number of blinks in this period indicates the type of error.

The priority of the errors is related to the num- ber of blinks indicating the error. The more blinks, the more severe the error (motor error is top priority). A higher priority error overrides a lower one (if a motor error and a commu- nication error existed, the light would blink four times for the motor error).

Since blink On time and blink Off time are equal in a four-blink cycle, the four−blink se- quence appears as a constant blink.

1 blink = Communication Error

2 blinks = Trigger Error

3 blinks = Tach Error

4 blinks = Motor Error

•The communication error occurs 2.5 sec- onds after a loss of communication be- tween the motor and the Front Panel board or Dual board. The user may continue to weld with this error.

•The trigger error occurs if the user has the trigger held for more than two minutes with- out striking an arc (providing current over- ride is not enabled), or if the user holds the trigger past the postflow phase in a timed weld. This error also occurs if the trigger is held when the feeder is powered up. The er- ror may be cleared by releasing the trigger.

•The tach error occurs 2 seconds after the loss of tachometer feedback. The user may continue to weld with this error. The motor speed is regulated through the monitoring of voltage and current.

•The motor error indicates that the motor has been drawing too much current for too long.

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Contents Processes OM-1500-14 207 499HDescription File MIG GmawFrom Miller to You Table of Contents Options and Accessories 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 DevicesSymboles utilisés UNE Décharge Électrique peut entraîner la mortIndique des instructions spécifiques DES Pièces Chaudes peuvent provoquer des brûlures graves LES Fumées ET LES GAZ peuvent être dangereuxLE Soudage peut provoquer un in cendie ou une explosion LES Bouteilles peuvent exploser si elles sont endommagées LE Bruit peut endommager l’ouïeRisque D’INCENDIE OU D’EXPLO- Sion LA Chute DE L’APPAREIL peut blesserProposition californienne 65 Avertissements LES Fils DE Soudage peuvent provoquer des blessuresLE Soudage À L’ARC risque de provoquer des interférences Principales normes de sécurité Information EMFEn ce qui concerne les implants médicaux OM-1500-14 Specifications − InstallationInstalling Swivel Into Pipe Post − IntroductionInstalling Boom And Reel Support Installing Control Box And Adjusting TiltInstalling Wire Guide Extension Equipment Connection Diagram Shielding gas pressure not toExceed 100 PSI 689 kPa Control Box Connections Pin Plug InformationPin Information Wire Type, Size, And Feed Speed Capability Table Removing Safety Collar And Adjusting BoomMotor Speed Wire Type Wire Size Feed Speed Capability Gun Recommendation TableAgainst surface. Tighten knob so wire Installing And Threading Welding WireSlip at the feeder see pressure adjust Ment above. Cut wire off. Close coverWhen DIP switch positions are changed, Setting Internal DIP SwitchesDIP Switch S1 DIP Switch S4 Not For Customer Use Position Settings And Results For DIP Switch S1Power Source Selection Menu Left/Right Select Switch Power Switch− Operation Operational TermsJog/Purge Switch Front Panel ControlsTime sec To set the correct voltage range for a particular power Program Push ButtonUpper Display Lower Display Setup Push ButtonWelding Sequence Diagram Adjust ControlSequence Push Button Start WeldAuxiliary Menus Wire Feed Speed Units Trigger Hold SetupBurnback Trigger Program Select− Setting Sequence Parameters Sequence Parameters In a ProgramFor more information on Sequence Push Button see Section Optional Dual Schedule Switch Diagrams − Setting Dual Schedule ParametersError DiagnosticsError Indications There is a two-position DIPDiagnostics For User Defined Options − Maintenance & TroubleshootingRoutine Maintenance MonthsDisconnect power before troubleshooting TroubleshootingTrouble Remedy PullCircuit Diagram − Electrical Diagram204 144-C 10-3 10-2 10-4 29 28 − Parts ListOptional Control Box PLG117 165 Harness Connectors/ReceptaclesBoom Assembly Boom Assembly -1Item Drive Assembly, Wire -1Items 26 Drive Assembly, WirePLG5 Not available unless listed Hardware is commonFraction Metric Drive Roll and Wire Guide KitsRoll Kit RollPage Start Your Professional Welding Career Now Page Service Your distributor also givesSupport 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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