Lincoln Electric Troubleshooting Lincoln 205 TIG Welder and Addressing Common Lincoln Invertec V205-T Problems
Page 45

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F-9

F-9

TROUBLESHOOTING & REPAIR

EXTERNAL DIAGNOSTICS

FIGURE F.1 EXTERNAL DIAGNOSTICS

 

WARNING

 

 

 

 

 

 

 

STICK

4-STEP

LOCAL

 

Display

 

 

DC TIG

2-STEP

REMOTE

 

 

 

 

 

 

MODE

AC TIG

TRIGGER

 

 

 

 

 

WELD

PULSE FREQUENCY

 

 

 

 

 

CURRENT

Hz

 

 

Output Current Control

 

UPSLOPE

 

% ON TIME

DOWNSLOPE

 

 

sec

 

sec

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

Output

 

 

 

 

POSTFLOW

OUTPUT

 

 

 

 

sec

 

 

 

 

BACKGROUND

 

 

Set-up Parameter

 

 

 

CURRENT

 

 

 

 

 

 

FINISH

PARAMETER

Power Supply

 

 

 

CURRENT

Select Button

 

 

 

 

SELECT / HOLD

V

 

PULSE ON

 

AC FREQUENCY Hz

 

 

 

 

 

 

 

 

 

 

AC BALANCE % EN

 

Alarm

 

®

 

 

 

 

The front panel controls the status of the equipment and shows it to the operator via the LED’s and the display. Immediately after switch-on of the equipment, the front panel executes an autotest operation, all LED’s will light up and the display shows”200” as a check.

Power supply LED (GREEN)

Indicates the machine switch-on status. Always present if the panel, and therefor the machine, is correctly powered.

Alarm LED (YELLOW)

Indicates a protection status of the equipment. Comes on to indicate the presence of a problem. The type of alarm is indi- cated in the display by an error code (see below).

Display

Immediately after the autotest operations above, the display briefly shows the software version of control panel (e.g. 01).

It indicates the welding parameters requested by the operator (with the help of the other keys) and immediately after striking of the arc sets to reading mode, providing the real value of the current delivered by generator. It indicates a protection status via codes with simultaneous switch-on of the yellow LED.

Indic.

Type of Error

Action

 

 

 

E10

Internal Heatsink Overtemp.

Remove upper cover, check internal temperature, check thermal device status

(N.C.). See machine layout.

 

 

 

E11

Power Supply Overvoltage

Remove upper cover, check that the power supply voltage is within the established

range (+/- 15%). Check reading voltage on 15.14.314 CN1 (See Fig. 9)

 

 

 

 

 

E12

Power Supply Undervoltage

Remove upper cover, check that the power supply voltage is within the established

range (+/- 15%). Check reading voltage on 15.14.315 CN1 (See Fig. 9)

 

 

 

 

 

E13

Front Panel Memory Error

Remove upper cover, check front panel power supplies. Perform front panel reset*

test and replace if necessary.

 

 

 

 

 

E14

Front Panel Secondary

Remove upper cover, check front panel power supplies. Perform front panel reset*

Memory Error

test and replace if necessary.

 

 

 

 

*Note: to reset front panel (memory) see procedure in “Set-up parameters” chapter below.

Normally, when cause(s) of alarm(s) is (are) removed, press one of the keys to exit from alarm status (or switch off and on the machine).

Thermal alarm will be automatically reset by letting go down internal temperature: machine will execute a new autotest and then start as in normal operation.

In case of error code E10, see also the three thermal switches in fig. below.

In case of error codes E11/E12, check input power supply voltage, with reference to the following table.

Under/Overvoltage alarm thresholds

Power supply rated

Undervoltage

Overvoltage

voltage

 

 

115 VAC

92 VAC

138 VAC

230 VAC

184 VAC

276 VAC

V205-T AC/DC

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Contents Invertec V205-T AC/DC Safety Electric Shock can kill Cylinder may explode if damaged Sûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Table of Contents Installation Section Operating Temperature Range Storage Temperature Range InstallationStacking Select Suitable LocationTilting Environmental AreaInput Connections Reconnect Procedure230V Input Attachment Plug Installation115V Input Engine Driven GeneratorOutput Connection for Stick Output and GAS Connection for TIG Welding Figure A.1Work Cable Connection Shielding GAS Connection Remote Control ConnectionV205-T AC/DC Table of Contents Operation Section General Description Safety InstructionsWelding Capability LimitationsFigure B.1 Rear Control Panel Figure B.1Figure B.2 Controls and SettingsLocal/Remote push button Selects the welding Step DiagramTIG DC TIG AC Indicator Parameter Default SET UP MenuWelding Polarity Output LimitationsFigure B.5 Copper TIG Welding Steel TIG WeldingTips for AC TIG Welding Filler MaterialProtective GAS AC TIG Welding Quick Start UPDC TIG Welding Quick Start UP Accessories Table of ContentsCompatible Equipment Optional AccessoriesCable Plugs TIG Torch KitsTable of Contents Maintenance Safety Precautions Input Filter Capacitor Discharge ProcedureRoutine Maintenance Table of Contents Theory of Operation Section Theory of Operation General DescriptionInput Board and BUS Board Figure E.3 Main Igbt Inverter Board Main Igbt Inverter BoardOutput Module Transistor Board Main TransformerOutput Module and Clamping Board Superimposition BoardOutput Filter Board CONTROL/DISPLAY Board High Frequency HF BoardFigure E.6 Igbt Insulated Gate Bipolar Transistor Igbt OperationTable of Contents Troubleshooting & Repair Section HOW to USE Troubleshooting Guide Troubleshooting & RepairElectric Shock can kill PC Board Troubleshooting ProceduresOutput Problems Function Problems Function Problems Secondary Power Board Test Welding Problems Figure F.1 External Diagnostics Troubleshooting & Repair External DiagnosticsFigure F.2 Troubleshooting & Repair Internal DiagnosticsLED Internal DiagnosticsV205-T AC/DC Description Input Filter Capacitor Discharge ProcedureDischarge Procedure Input Filter Capacitor Discharge ProcedureInput Filter Board Test Input Filter Board Figure F.5 Input Filter Board V205-T AC/DC Main Igbt Inverter Board LOW Voltage Test Main Board Table F.1 Test Points LEDFigure F.7 Main Igbt Inverter Board Location TP2 MF2CONTROL/DISPLAY Board Test Control/Display Board Figure F.9 CONTROL/DISPLAY Board Location CN2 CN7 CN1Table F.2 Plug CN1 Test Points CN1Table F.3 Plug CN2 Test Points Table F.4 Plug CN7 Test PointsBUS Board Test BUS Board Table F.6 Plug CN3 Test Points Table F.5 Plug CN2 Test PointsTable F.7 Plug CN4 Test Points Table F.8 Plug CN7 Test PointsCN4 CN2Main Inverter Board Upfr Section Test Table F.10 Voltage Checks with 115 VAC Applied to Machine Figure F.14 Upfr Location on Main BoardDD1 MF9 TP9 Gndpwr RL1V205-T AC/DC Output Filter Board Test Troubleshooting and RepairOutput Filter Board Figure F.18 Output Filter Board Plug CN1 Figure F.17 Output Filter Board Plug LocationV205-T AC/DC Secondary Power Board Test Secondary Power Board Table F.13 Voltage Checks with 115 VAC Applied to Machine Figure F.20 Secondary Power Board Test Point LocationsV205-T AC/DC Main Inverter Board Welding Logic and Inverter Section Test Figure F.21 Main Board Location Main Inverter BoardTable F.17 LED Check in Stick Mode Table F.15 Feedback Voltage SignalsTable F.14 LED Functions Table F.16 Voltage Checks with 115 VAC Applied to MachineTP14 TP15 TP16 TP19 TP31 CN4/1-2 Short Circuit Ohms CN5/1-2 MF15 VDS MF12 MF16 VDS Figure F.23 Main Board Lower Left TP9 Ground PowerV205-T AC/DC Input Filter Board Removal and Replacement Input Filter Board Removal and Replacement RV1 V205-T AC/DC Main Igbt Board Removal and Replacement Main Igbt Board Removal & Replacement CN2 CN1 V205-T AC/DC CONTROL/DISPLAY Board Removal and Replacement CONTROL/DISPLAY Board Removal & Replacement CN3 CN7V205-T AC/DC Output Filter Board Removal and Replacement Removal and Replacement Casefront Mounting Screws Phillips Head Screws CN1 CN2 Output Diodes Removal and Replacement Figure F.35 Output Diode Location Output DiodesOutput Transistor Removal and Replacement Output Transistor Removal and Replacement Plug CN1 5mm V205-T AC/DC Table of Contents Electrical Diagrams Section Electrical DiagramsWiring Diagram V205-T AC/DC Standard Diagram SVM Error Reporting Form
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