Lincoln Electric V250-S Input Voltage Reconnect Procedure, Input Fuse and Supply Wire

Page 10

A-4

INSTALLATION

A-4

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POWER INPUT CONNECTION FOR 50/60 HZ MACHINES

1. Connect terminal marked

 

 

 

 

 

to earth ground

per National Electric Code.

 

 

 

2.Connect the supply lines to the line switch. Torque to 3.0 Nm.

3.Install in accordance with all local and national electric codes.

The Invertec V250-S 50/60 Hz machine is supplied with one cord connector. The cord connector provides a strain relief for the input power cord as it passes it through the rear access hole. The cord connector is designed for a cord diameter of 7.9 to 27.2mm (.310 to 1.070 in).

Strip away outer jacket of cord, trim fillers and insert conductors through cord connector. The jacketed por- tion of the cord must go through the cord connector. Tighten both connector screws.

INPUT FUSE AND SUPPLY WIRE

Refer to the Technical Specifications page at the beginning of this chapter for the proper fuse sizes and supply cable sizes.

•Fuse the input circuit with recommended super lag fuses or delay type circuit breakers.

•Install the proper fuse in the fuse holder in the main disconnect panel.

INPUT VOLTAGE RECONNECT PROCEDURE

When received directly from the factory, units are con- nected for the highest input voltage, 440 VAC for 50/60 Hz machines and 460 VAC for 60 Hz machines. If 440 or 460 VAC is the desired input, then the machine may be connected to the power system with- out any setup required inside the reconnect door. However, verify the connection with the following pro- cedure. For other voltages refer to the instructions located on the Reconnect Panel Access Door or fol- low the instructions below.

CAUTION

Failure to follow these instructions can cause immedi- ate failure of components within the welder.

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1.Open the access door on the right side of the machine.

2.For 200-230: Position the large switch to 200-230.

For 380-460: Position the large switch to 380-460.

3.Move the “A” lead to the appropriate terminal. Refer to figure A.1 below.

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RECONNECT PROCEDURE

. Disconnect input power before

1. BE SURE POWER SWITCH IS OFF.

inspecting or servicing machine.

2. CONNECT LEAD 'A' TO DESIRED

. Do not operate with wraparound

INPUT VOLTAGE RANGE.

 

 

removed.

440-460V

 

. Do not touch electrically live parts.

 

.

Only qualified persons should install,

 

'A'

380-415V

use or service this equipment.

 

220-230V

IF MACHINE CEASES TO OPERATE (NO METER, NO FAN)

 

200-208V

AND THERE IS NO OTHER KNOWN FAILURE: CHECK FUSE;

 

REPLACE WITH SPECIFIED FUSE.

3. POSITION SWITCH TO DESIRED INPUT VOLTAGE RANGE.

 

VOLTAGE=380-460V

 

VOLTAGE=200-230V

THE LINCOLN ELECTRIC CO. CLEVELAND, OHIO U.S.A.

A

S21230

Figure A.1 Input Voltage Reconnect Instructions

INVERTEC V250-S

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Contents Invertec V250-S Safety ARC Rays can burn Electric Shock can killFumes and Gases can be dangerous Cylinder may explode if damaged Welding Sparks can cause fire or explosionPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcMaster Table of Contents for ALL Sections Installation Table of Contents Installation SectionThree Phase Single Phase Technical Specifications Invertec V250-SThree Phase Input Connections Safety PrecautionsSelect Suitable Location Input Fuse and Supply Wire Input Voltage Reconnect ProcedurePower Input Connection for 50/60 HZ Machines Quick Disconnect Plugs Remote Control ReceptacleOutput Connections Output CablesInvertec V250-S Operation Safety Instructions Gouging SparksControls and Settings Figure B.1 Case Front ControlsAIR Carbon ARC Cutting Constant Current ProcessesManual ARC Welding Stick TIG WeldingOverload Protection Parallel OperationThermal Protection Invertec V250-S Accessories Table of Contents Accessories SectionRemote Controls Options / AccessoriesCable Plugs Maintenance Table of Contents Maintenance SectionInput Filter Capacitor Discharge Procedure Figure D.1 Location of Input Filter Capacitor TerminalsRoutine Maintenance Filter Capacitor ConditioningFigure D.2 Location of Maintenance Components Table of Contents Theory of Operation Section Theory of OperationGeneral Description Input Line VoltagePrecharge and Protection Figure E.2 Protection and PRE-CHARGE CircuitsMain Transformer Figure E.3 Main TransformerOutput Rectification Control Figure E.4 Output Rectification and ControlProtection Circuits Overload ProtectionInsulated Gate Bipolar Transistor Igbt Operation Minimum Output Pulse Width ModulationMaximum Output Troubleshooting & Repair HOW to USE Troubleshooting Guide Oscilloscope WarningPC Board Troubleshooting Procedures Board can be dam- aged by static electricityPossible Areas Recommended Symptoms Course of ActionPossible Areas Perform the Control Board Voltage ChecksCapacitor Balance Test Troubleshooting & Repair Perform the Output Diode Test Welding Problems Invertec V250-S Test Description Auxiliary Transformer TestMaterials Needed Test Procedure Auxiliary Transformer TestAuxiliary Transformer Test Table F.1 Auxiliary Transformer Test PointsInvertec V250-S Input Rectifier Test Test Procedure Input Rectifier TestTable F.2 Input Rectifier Test Points Test Point Terminals Analog Meter X10 RangeInvertec V250-S Power Board Resistance Test Power Board Resistance Test Test DescriptionPower Board Resistance Test Table F.3 Power Board Resistance Test PointsInvertec V250-S Output Diodes Test Output Diodes Test Figure F.4 Machine Output TerminalsInvertec V250-S Diode Modules Power Board Voltage Test Power Board Voltage Test Figure F.8 Plug J6 on Power BoardAcceptable Test Description Table F.4. Power Board Voltage Test PointsTest Conditions Invertec V250-S Control Board Voltage Test Control Board Voltage Test Figure F.9 Plugs J1-J5 on Control BoardTable F.5. Control Board Voltage Test Points 18VACInvertec V250-S Protection Circuit Test Protection Circuit Test Figure F.10 Control Board Plug J2 Test PointsProtection Circuit Simplified Invertec V250-S Capacitor Balance Test Figure F.12 Power Board and Capacitor Test Locations Capacitor Balance TestTable F.6 Capacitor Voltages Invertec V250-S Control Board Removal and Replacement Procedure Control Board Removal and ReplacementV250S Control Power Board Removal and Replacement Power Board Removal and Replacement Figure F.14 Power Board Lead LocationsPower Board Replacement Procedure Invertec V250-S Filter Capacitor Removal and Replacement Matched PartsFilter Capacitor Removal and Replacement Figure F.15 Heatsink/Power Board RemovalPerform Power Board Replacement Procedure in this section Invertec V250-S Input Rectifier Bridge Removal and Replacement Input Rectifier Bridge Removal and Replacement Figure F.16 Input Rectifier Lead LocationsTroubleshooting & Repair Invertec V250-S Materials Needed Snubber Resistors Locking Tabs Invertec V250-S Wrench Allen type wrench Torque wrench Mounting Bolts Diode Modules Bolted Connections Troubleshooting & Repair Invertec V250-S Main Transformer Removal and Replacement Machine Codes below T3 Current Transformer Main Transformer Main Transformer Secondary Leads Figure F.22 Main Transformer Mountings Clear all leads and secure for case wrap-around assembly Invertec V250-S Main Transformer Removal and Replacement Machine Codes Above Figure F.23 Main Transformer Right Side Figure F.24 Main Transformer Left Side Figure F.25 Main Transformer Mountings Troubleshooting & Repair Invertec V250-S Retest After Repair Maximum Acceptable Output AT Minimum Output SettingsMinimum Acceptable Output AT Maximum Output Settings Input Idle Amps and Idle WattsInvertec V250-S Electrical Diagrams Invertec V250-S Wiring Diagram Codes 10102 Invertec V250SWiring Diagram Codes 10187 Return to SectionControl PC Board G2666 Layout G2666Power PC Board G2684 Layout Power P.C. BD. AsblyControl PC Board G2666 Schematic Relay CoilsPower PC Board G2684 Schematic From Control BD
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