Lincoln Electric IM557 Wire feed motor runs and solenoid Power source is defective, Sent, Present

Page 39

E-5

TROUBLESHOOTING

E-5

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

PROBLEMS

(SYMPTOMS)

POSSIBLE

CAUSE

RECOMMENDED

COURSE OF ACTION

9. Wire feed motor runs and solenoid

a. Power source is defective.

a. If arc voltage is present when wire feeder is

 

turns on but no arc voltage pre-

 

connected to the other input receptacle (#1 or

 

sent.

 

#2) of power source then power source is

 

 

 

defective. Otherwise, select a stick procedure

 

 

 

on power source, connect a known good input

 

 

 

cable (see step b) to wire feeder #1 receptacle

 

 

 

of power source, and jumper across sockets C

 

 

 

and D of 8-socket input cable plug. If no arc

 

 

 

voltage is present (refer to display on power

 

 

 

source) then power source is defective.

 

 

b. Input cable is defective.

b. Disconnect input cable from power source and

 

 

 

wire feeder. Check continuity between socket

 

 

 

C of 8-socket plug and pin C of 14-pin plug of

 

 

 

the input cable, and between socket D of 8-

 

 

 

socket plug and pin D of 14-pin plug of the

 

 

 

input cable. Replace cable if no continuity.

 

 

c. Wiring harness or Control PC

c. Check continuity between pin C of 8-pin recep-

 

 

board is defective.

tacle and pin 7 of plug P1, and between pin D

 

 

 

of 8-pin receptacle and pin 6 of plug P1. If no

 

 

 

continuity then harness is faulty, otherwise

 

 

 

replace Control PC board. (See procedure for

 

 

 

replacing PC boards.)

 

 

 

 

 

10. Speed does not change when

a. Run-in and weld speeds are set

a. Set run-in and weld speeds to desired set-

 

weld current flows.

to the same value or run-in is set

tings.

 

 

to ---.

 

 

 

 

b. Power Source may be defective

b. Make sure that parameters on power source

 

 

or there may be a problem with

display, such as WFS, match those on wire

 

 

the Serial communications.

feeder display. If not, refer to Problem 14.

 

 

 

Otherwise, replace control PC board. (See

 

 

 

procedure for replacing PC boards.)

 

 

 

 

11. Voltmeter does not function or

a. Electrode sensing lead or connec-

a. Check continuity from brass block on wire

 

read properly when arc voltage is

tions may be intermittent.

feeder to pin F of 8-pin control cable recepta-

 

present.

 

cle on wire feeder. If there is no continuity,

 

 

 

repair faulty connection.

 

 

b. Serial communication problem.

b. Make sure that parameters on power source

 

 

 

display, such as WFS, match those on wire

 

 

 

feeder display. If not, refer to Problem 14.

 

 

 

Otherwise, replace Control PC board. (See

 

 

 

procedure for replacing PC boards.)

 

 

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

SYNERGIC 7 & 7H

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Contents Synergic 7 and 7H Mar ‘95 SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionMar. ‘93 Précautions DE SûretéOn-Line Product Registration Please Examine Carton and Equipment For Damage ImmediatelyTable of Contents Size & Weight Without Wire Stand With K377 Wire Stand InstallationTechnical Specifications Synergic 7 and 7H Type K631-3 K631-4 Wire Speed RangeRecommended Processes and Equipment Standard FeaturesWire Drive Features General DescriptionControl Features RUN-IN WFS Y P a D a N D D I S P L a Y DescriptionElectric Shock can kill Safety PrecautionsAluminum Wire Sizes Procedure to Install Drive Roll and Guide TubesWire Feed Drive Roll and Guide Tube Kits Steel Wire Sizes RollGmaw Guns Gun Cable Connection Wire Feeder to GunGun and Cable Assemblies For GMA Gun CablesCylinder may explode if damaged Shut off shielding gas supply when not in useSynergic 7 Water Connections for Water- Cooled Guns Gmaw Shielding GasElectrical Installation Warning 60% Duty Cycle Up to 100 ft Length 30m Optional Features InstallationWork Cable CurrentInstallation Operating Instructions Mode SelectionPower-Down Save OperationDisplay Control Keys Preset voltage/trim may be adjustedCold Feed Memory Ammeter Selection Step Trigger Mode SelectionDual Procedure Remote Control K1449-1 Procedure Selector SwitchFigure B.1a Threaded Locking Collar Wire LoadingInnershield Coils Coil tie wires To remove the wire reel from its shaft, graspKnob so it seats into the shaft when released Cut the tie wires at this timeREADI-REELS a K438 READI-REEL Adapter Must be Used Feeding ElectrodeGas Guard Regulator Setting Idle Roll Pressure SettingWire Reel Changing Wire Feed Overload ProtectionMaking a Weld Grounding Lead Protector Explanation of Prompting Error MessagesOptional Features Accessories60 LB .2 KG Coil Adapter K1504-1 Universal Wire Reel Stand K1524-1READI-REEL Adapters K179 type vacuum unit not recommended for use with Synergic MISC. OptionsRoutine Maintenance MaintenanceMaintenance Avoiding Wire Feeding ProblemsLocate Problem Symptom 1TROUBLESHOOTINGE-1Troubleshooting Replace WeldingIng and gas flow rate is proper IngConnector J1 on control PC No control of wire feedTers on wire feeder display do not Defective wire feed motor tach orOr there may be a problem with Wire feed motor runs and solenoid Power source is defectiveWiring harness or Control PC Speed does not change when Run-in and weld speeds are setRemote control kit must be used Meters on wire feeder display doNot match those on power Problem with wire feeder harnessTroubleshooting Wiring harness, or Control board Dure switch Be connectedBetween procedures a and B Display. If not, refer to ProblemFaulty communication between Local dual procedure switchDual procedure switch is used to Switch between procedures aTroubleshooting HXX Procedure for Replacing PC Boards Electric Shock can kill Wiring Diagram Synergic DiagramsElectric Shock Can Kill Input Connection DiagramW I R E R E E L S T a N D Dimension PrintSynergic 7 & 7H Synergic 7 & 7H Synergic 7 & 7H Synergic 7 & 7H Precaucion Warnung
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