Miller Electric 714D manual Diagnostics, LED3-Related Error Indications

Page 31

8-2. Diagnostics

3

2

 

4

The following error messages are shown on the upper and lower displays to indicate specific errors. Explanations are in the text below:

1

Front panel is shown removed for purpose of illustration only. In actual use, front panel would be in place.

1Wrapper

2Motor Control Board PC1

3LED3

4DIP Switch S1

.There is a two-position DIP switch S1 located on motor control board PC1. These switches are factory-set in the off position and must remain in that position for the unit to operate correctly.

Ref. 802 687

ERR

COMM

Indicates a communication error.

ERR

TRIG

Indicates a trigger error.

ERR

TACH

Indicates a tachometer error.

ERR

MTR

Indicates a motor error.

ERR

GAS

No gas flow detected.

ERR

COOL

No coolant flow detected.

LED3-Related Error Indications

Error conditions are indicated by LED3 on PC1. To view LED3, turn Off unit, remove wrapper, and turn unit On. LED3 is most easily observed from the left side of the unit.

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 communica- tion 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 between the motor and front panel boards. The user may continue to weld with this error. The er- ror may be cleared by resetting the unit (see Section 5-10).

•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. To remedy this, reduce the wire feed speed or the wire feeder torque load/duty cycle.

Additional Error Messages (Additional hardware required for these to be functional)

Gas flow error: indicates no gas flow is de- tected. Connect a gas supply or remedy the problems not allowing gas to flow.

Coolant flow error: indicates no coolant flow is detected. Connect a coolant system or reme- dy the problems not allowing coolant to flow.

OM-1500-1 Page 27

Page 30 Page 32
Image 31
Page 30 Page 32
Contents Processes OM-1500-1Description From Miller to You Table of Contents Standards DirectivesElectric 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 tuerDES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un incendie ou une explosionLE Bruit peut affecter l’ouïe DES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peutInformation sur les champs é lectromagné tiques Principales normes de sé curitéConsignes relatives aux stimulateurs cardiaques Definitions + + +Rating Label For CE Products Symbols And DefinitionsSite Selection InstallationSpecifications IntroductionRear Panel Connections And Rotating Drive Assembly Pin Wire Type, Size, And Feed Speed Capability TablePin Plug Information Gun Recommendation TableExtending from outlet wire guide as Installing And Threading Welding WireSetting Internal DIP Switches Operation Power SwitchOperational Terms Front Panel Controls Wire SpeedTime sec CE Models Program Push ButtonUpper Display Non-CE ModelsLower Display Setup Push ButtonSequence Push Button Adjust ControlOM-1500-1 Non-CE Models Auxiliary MenusRun-In Trigger Hold SetupReset To Factory Settings Auxiliary MenuJog/Purge Sequence Parameters In a Program Setting Sequence ParametersRoutine Maintenance Setting Dual Schedule ParametersMaintenance Optional Dual Schedule Switch DiagramsLED3-Related Error Indications DiagnosticsCircuit Diagram Electrical DiagramOM-1500-1 Main Assembly Parts ListPart Description Quantity Control Box 2ft Detach OptionDrive Assembly, Wire Ued Drive Assembly, Wire -1 Item 23 continRoll Drive Kit Drive Roll And Wire Guide Kits Fraction MetricKit Roll Wire Size Roll DrivePage Page Support ServiceMiller Electric Mfg. Co Owner’s Record
Top Page Image Contents