Lincoln Electric SVM101-B service manual K900-1 DC TIG Starter Connection, Parallel Operation

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A-5

INSTALLATION

A-5

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LN-9 GMA Connection Instructions (Not applicable to machines with only 42V Aux.)

1.Turn the Invertec power switch “off”.

2.Connect the K596 or K1820-10 control cable assembly from the LN-9 GMA to the Invertec control cable connector. The control cable connector is located at the rear of the Invertec.

3.Connect the electrode cable to the output terminal of polarity required by electrode. Connect the work lead to the other terminal.

4.Place the local-remote switch in the “remote” posi- tion to allow output control at the LN-9 GMA.

5.Set the meter polarity switch on the rear of the Invertec to coincide with wire feeder polarity used. The wire feeder will now display the welding volt- age.

6.K608-1* adapter is required in LN-9 GMA for LN-9 type control. K608-1 is installed in line with P10. See diagram S20607.

7.K442-1* Pulse Power Filter Board is also required for GMAW,but should beremoved for FCAW.

8.If K596 is not available, see connection diagram S20608 for modification of K196 LN-9 GMA input cable with K867 universal adapter plug.

* These kits are no longer available.

GENERAL INSTRUCTIONS FOR CONNEC- TION OF WIRE FEEDERS TO INVERTEC

Wire feeders other than LN-7 and LN-25 may be used provided that the auxiliary power supply capacity of the Invertec is not exceeded. K867 universal adapter plug is required. See connection diagram S19406 and S19386 for more information.

Remote Control of Invertec

Remote control K857, hand amptrol K963 and foot amptrol K870 require K864 remote control adapter. See connection diagram S19309.

K954-1 MIG PULSER

The MIG Pulser is a hand-held “pendant” type GMAW Pulsing option for the V300-I Power Source. See the

Mig Pulser’s IM manual (IM555) for connection information.

K900-1 DC TIG STARTER CONNECTION

This versatile new kit was made to mate with the Invertec

A control cable assembly is supplied with the kit to connect the kit to an Invertec. The cable can be con- nected, either end, at the DC TIG Starter kit and at the Invertec by attaching to the 14-pin Amphenols on the backs of each unit. See diagram S20405.

A negative output cable assembly is also supplied with the DC TIG Starter kit to connect the kit with the Invertec’s negative output terminal.

All Magnum™ one and two piece water-cooled torches with 7/8 left-hand threads and gas-cooled torches with 7/8 and 5/16 right-hand threads can be connected to the starter kit.

To secure the DC TIG Starter kit to the bottom of the Invertec and for more detailed instructions, see the K900-1(IM465) manual.

PARALLEL OPERATION

The Invertec is operable in parallel in both CC and CV modes. For best results, the currents of each machine should be reasonably well shared. As an example, with two machines set up in parallel for a 400 amp procedure, each machine should be set to deliver approximately 200 amps, not 300 amps from one and 100 amps from the other. This will minimize nuisance shutdown conditions. In general, more than two machines in parallel will not be effective due to the voltage requirements of procedures in that power range.

To set machine outputs, start with output control pots and arc force/pinch pots in identical positions. If run- ning in a CC mode, adjust output and arc force to maintain current sharing while establishing the prop- er output current. In CV modes, the pots in identical positions. Then switch the machine meters to amps and adjust one of the output control pots for current balance. Check the voltage and if readjustment is necessary, repeat the current balancing step. Pinch settings should also be kept identical on the machines.

V300-I

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Contents Invertec Safety Fumes and Gases can be dangerous Electric Shock can killARC Rays can burn Iii SafetyWelding Sparks can cause fire or explosion Cylinder may explode if damagedSûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Section A-1 Table of ContentsInstallation Section Three Phase Single Phase InstallationLocation 3INSTALLATIONA-3Product Description Electrical Installation Input Voltage SetupThree Phase Input Power Input ConnectionConnection of Wire Feeders to the Invertec Single Phase InputParallel Operation Remote Control of InvertecK900-1 DC TIG Starter Connection Quick Disconnect Plugs 6INSTALLATIONA-6Output Cables Section B-1 Operation SectionControl Function / Operation OperationOperating Instructions Duty CycleFull Range Is Is Very Soft, 10 Is Very Crisp Mode SwitchAuxiliary Power Meter Polarity SwitchSection C-1 Accessories SectionOptions / Accessories AccessoriesSection D-1 Maintenance SectionInput Filter Capacitor Discharge Procedure MaintenanceOverload Protection Preventive MaintenanceFigure D.2 Location of Maintenance Components Section E-1 Theory of Operation SectionInput Line Voltage & Auxiliary Transformer Theory of OperationReturn to Return to Section TOC Precharge & Protection CircuitsFigure E-4 ---SWITCH Circuits & Transformer Switch BoardsFigure E-5 --OUTPUT & Control Circuits Output and Control CircuitsPassive Maximum Output Pulse Width ModulationMinimum Output Thermal Protection Protective CircuitsOverload Protection Section F-1 Troubleshooting & Repair SectionHOW to USE Troubleshooting Guide Troubleshooting & RepairPC Board Troubleshooting Procedures Matched Parts Additional Information Oscilloscope WarningInput Filter Capacitor CONDITION- ING Department Feeding ProblemsFeeding Problems See Input Rectifier test See Output Diodes test See Switch Board test V300-I Input Filter Capacitor Discharge Procedure 11TROUBLESHOOTING & REPAIRF-11Figure F.I Location of Input Filter Capacitor Terminals Input Filter Capacitor Discharge ProcedureOutput Pilot Circuit Test Test Procedure J2 J4 J3 G2527V300-I Protection Board Output Test Turn Power Switch OFF Test Procedure313 306 J15 275F 311 V300-I Figure F.6 Inserting Probes ProtectionCapacitor Balance Test Static Capacitor Test 912 V300-I Switch Board Test Switch Board Test Switch Board Test Table F.3 Snubber Resistor Test Check Test Result Conclusion Next Test Step Repair Action Snubber Resistor TestOutput Diode Test Output Diode Test Test ProcedureInput Rectifier Test Probe Acceptable Meter Reading Table F.5Points Steps Overcurrent Protection Current Trigger Test 302 G2527 Control J1 275D Overcurrent Protection Current Trigger TestControl Overvoltage Protection DC Trigger Circuit Test Figure F.16 PC Boards Removed Overvoltage Protection DC Trigger Circuit Test306 275F 309 310 #301 #305 1J8 #311 1J14 6J6 #302#313 #275D 3J8 2J14 1J6Thermal Protection AC Trigger Circuit Thermal Protection AC Trigger Circuit Figure F.20 PC Boards Moved for AccessFigure F.21 Thermal Protection AC Trigger Circuit V300-I Power Board Test Test B Power Board TestTest a Figure F.23 Power Board Test Points Simplified Trigger Circuit Capacitor Removal and Replacement Procedure Procedure Capacitor Removal and ReplacementFigure F.27 -- Removing Capacitor Nuts Figure F.27 Switch Board Removal and Replacement Procedure Procedure Switch Board ReplacementTest After Switch Board or Capacitor Replacement Perform Retest After Repair Test After Switch Board or Capacitor ReplacementOutput Diode Replacement Procedure Output Diode Replacement Procedure 60TROUBLESHOOTING & REPAIRF-60Procedure Diode Modules 61TROUBLESHOOTING & REPAIRF-61Min. Acceptable Max. All Modes V300-I V300-PRO Retest After RepairOCV at rated Input V300-PRO OutputSection G-1 Electrical Diagrams Section#0# Wiring Diagram Entire Machine Code 9826 L8657Return Wiring Diagram Entire Machine Code 9827 L8938Wiring Diagram Entire Machine Code 10036 L9299 $ $ Wiring Diagram Entire Machine Code 10037 L9300Section Wiring Diagram Entire Machine Code 10132 L9567Wiring Diagram Entire Machine Code 10133 L9568 Wiring Diagram Code$& $ Wiring Diagram Entire Machine Code 10258 L10189Wiring Diagram Entire Machine Code 10336, 10450 L10205 V300-I Wiring Diagram European# . $ #$ !#$ #! %&$ Schematic Entire MachineSchematic Driver PC Board S20216 Identification PC Board Assembly Driver L8660Schematic Driver PC Board S20799 Description PC Board Assembly DriverSchematic Switch PC Board L8440 CAPACITOR, Cemo 2700P 50V 5% PC Board Assembly Switch L8441Schematic Switch PC Board L10956 Reqd Identification PC Board Assembly Switch L10958-1Schematic Control PC Board G2525 Electrical Diagrams CAPACITOR, Cemo 150P Schematic Protection PC Board M16097 DZ1 PC Board Assembly Protection L7915-2Schematic Power PC Board M16018 VOLT. REG. & Heat Sink Asbly PC Board Assembly Power L8033-7