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OPERATION AND WIRING DIAGRAMS................ 2
REPAIR GUIDE.......................................................13
SPARE PARTS LIST...............................................26
REPAIR SHEET...................................................... 28
" r e p a r a t i o n
TROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTING
AND REPAIR MANUAL
AND REPAIR MANUAL
AND REPAIR MANUAL
AND REPAIR MANUAL
PAGE
2
3
5
7
13
14
14
18
21
n o
inver ter
p r o b l e m ! "
cod. 988647
Table of Contents
Related Manuals for Telwin TECHNOLOGY TIG 172
Summary of Contents for Telwin TECHNOLOGY TIG 172
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Page 1: Table Of Contents
cod. 988647 inver ter TROUBLESHOOTING TROUBLESHOOTING TROUBLESHOOTING TROUBLESHOOTING AND REPAIR MANUAL AND REPAIR MANUAL AND REPAIR MANUAL AND REPAIR MANUAL CONTENTS PAGE OPERATION AND WIRING DIAGRAMS....2 - Block diagram - Analysis of the block diagram - Illustrations - Wiring diagrams REPAIR GUIDE............13 - Equipment required - General repair instructions... -
Page 2: Operation And Wiring Diagrams
TECHNOLOGY TIG 172 AC/DC OPERATION AND WIRING DIAGRAMS OPERATION AND WIRING DIAGRAMS OPERATION AND WIRING DIAGRAMS OPERATION AND WIRING DIAGRAMS BLOCK DIAGRAM... -
Page 3: Analysis Of The Block Diagram
TECHNOLOGY TIG 172 AC/DC D9, D10 convert the current circulating in the negative OUT of ANALYSIS OF THE BLOCK DIAGRAM the power transformer to a single direction, preventing saturation of the nucleus. NOTE: Unless indicated otherwise, it should be assumed that D6, D7, D8 recirculate the inductance output current (block 9) the components are assembled on thewelding machine. - Page 4 TECHNOLOGY TIG 172 AC/DC Block 17 Block 26 Adder Maximum current regulator Consisting of: U13A, U13B (control board). Consisting of: R105 (control board). Collects the information from block 26 (maximum current Processes the information arriving from block 25 (shunt regulator) and block 18 (microcontroller), producing a voltage...
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Page 5: Illustrations
TECHNOLOGY TIG 172 AC/DC ILLUSTRATIONS Primary board (19 - 20) FILTER RECTIFIER UNDERVOLTAGE/OVERVOLTAGE BRIDGE FILTER SAFEGUARD (13) FLY-BACK TRASFORMER (21) (14) GALVANIC CURRENT CHOPPER PRE-CHARGE IGBT SEPARATION TRASFORMER DRIVER Control board (25) (26) SHUNT MAXIMUN CURRENT AMPLIFIER REGULATOR (15) PRIMARY CURRENT... - Page 6 TECHNOLOGY TIG 172 AC/DC Secondary board (32) (10) SHUNT SOLENOID VALVE RELAY AND HF AC/DC CURRENT CONVERTER (27) SECONDARY SCR DRIVER DIODES Torch button board (29) (30) AUXILIARY TRASFORMER SOLENOID VALVE RELAY - 6 -...
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Page 7: Wiring Diagrams
TECHNOLOGY TIG 172 AC/DC WIRING DIAGRAMS General wiring diagram - 7 -... - Page 8 TECHNOLOGY TIG 172 AC/DC Wiring diagram primary board - Power Wiring diagram primary board - Driver - 8 -...
- Page 9 TECHNOLOGY TIG 172 AC/DC Wiring diagram primary board - power supply Wiring diagram control board - Micro - 9 -...
- Page 10 TECHNOLOGY TIG 172 AC/DC Wiring diagram control board - Digital Wiring diagram control board - Analogyc - 10 -...
- Page 11 TECHNOLOGY TIG 172 AC/DC Wiring diagram control board - In / Out Wiring diagram secondary board - Power - 11 -...
- Page 12 TECHNOLOGY TIG 172 AC/DC Wiring diagram secondary board - Driver Wiring diagram HF board Wiring diagram PT board - 12 -...
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Page 13: Repair Guide
5 Differential probe 1/200 6 Hall Probe cod. 802406 7 HV Power supply cod. 802403 USEFUL INSTRUMENTS 6 Unsoldering station 7 Miscellaneous tools (*)The instruments with codes can be supplied by Telwin. The sale price is available on request. - 13 -... -
Page 14: General Repair Instructions
(the circuit on the primary board supplying H) The boards (repaired when necessary) and the wiring should auxiliary voltages), even when the machine is operating at low never be modified without prior authorisation from Telwin. voltage. I) For further information on machine specifications and It is easy to build using the electrical diagrams in fig. - Page 15 TECHNOLOGY TIG 172 AC/DC It is therefore important to take special care when cleaning the poorly functioning thermal contact between IGBT and following parts dissipator (e.g. loosened attachment screws: check); Fan fig. 2A faulty output connection. Relay K2 secondary board (fig. 6)
- Page 16 TECHNOLOGY TIG 172 AC/DC J15 and J16 from the control board and make sure the - between pin 3 (+) and the dissipator (-) of U5: equal to +5Vdc resistance is approx. 0ohm ( fig. 7 - between pin 3 (+) and the dissipator (-) of U4: equal to +12Vdc...
- Page 17 TW). This is the reference code primary board and the power transformer (CN3 and CN10). for requesting a replacement: Telwin may supply boards that are L) Switch on the HV and the variac (initially set to 0V), close the compatible but with different codes.
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Page 18: Testing The Machine
TECHNOLOGY TIG 172 AC/DC instructions. Please take careful note of the procedure for replacing the Prepare the components for replacement. For the IGBT's, SCR module (fig. 6): bend the rheofores at 90 (never bend and/or place the parts ° The SCR module is attached to the dissipator and to reach it, it is under tension near the case). - Page 19 TECHNOLOGY TIG 172 AC/DC reading on the oscilloscope is not 60KHz ±5%, adjust the FIGURA E FIGURE H frequency using trimmer R162 on the control board; the output voltage over dinse + and dinse is equal to 110Vdc 15%. SETTINGS ·...
- Page 20 TECHNOLOGY TIG 172 AC/DC the waveforms displayed on the oscilloscope resemble those D) Running time test and closing the machine Fig. J On the front panel set switch SW2 to MMA (as low as it will go), switch off the ohmic load and switch off the main switch.
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Page 21: Illustrations
TECHNOLOGY TIG 172 AC/DC ILLUSTRATIONS FIG. 1A SCRAW FASTENING FRONT PANEL SCRAW FASTENING BACK PANEL SCRAW FASTENING FRONT PANEL FIG. 1B COVER SCRAWS COVER SCRAWS COVER SCRAWS BOTTOM COVER SCRAWS BOTTOM COVER SCRAWS - 21 -... - Page 22 TECHNOLOGY TIG 172 AC/DC FIG. 2A FIG. 2B YELLOW LED WELDING REGULATIONS POWER SUPPLY ALARM GENERAL SWITCH TORCH VOLTAGE LEDS GREEN LED YELLOW LED MAINS CABLE SWITCH SELECTION PUSH 2T/4T/MMA BUTTON WELDING REGULATIONS SWITCH SELECTION ENCODER DC-HF/DC- LIFT/AC ALPHANUMERIC BOTTOM...
- Page 23 TECHNOLOGY TIG 172 AC/DC FIG. 4 TORCH BUTTON FUSE RELAIS DIODES RECTIFIER BOARDHF TRANSFORMATOR BOARD FASTON SUPPORT J1 E J3 BOARD ON HF BOARD FIG. 5 Q4, Q3 D5, D3 C7, C2, C4, C6 R40A ISO2, ISO1 PRIMARY Q2, Q1...
- Page 24 TECHNOLOGY TIG 172 AC/DC FIG. 6 ISO1, ISO3 ISO2, ISO4 R1, R2, R3, R4 METALLIC SHUNT RELAIS SECONDARY STRUCTURE THERMOSTAT CABLE DIODES FIG. 7 R105 IMAX J14, J13 J15, J16 R162 FREQ - 24 -...
- Page 25 TECHNOLOGY TIG 172 AC/DC TAB. 1 MACHINE CYCLE 2T WITH HF ( ) - LIFT ( START ARC STRIKE WELDING WELDING WELDING DOWN POST END CYCLE CYCLE CURRENT CURRENT CURRENT SLOPE EV= OFF EV= ON EV= ON EV= ON EV= ON...
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Page 26: Spare Parts List
TECHNOLOGY TIG 172 AC/DC ELENCO PEZZI DI RICAMBIO - LISTE PIECES DETACHEES SPARE PARTS LIST - ERSATZTEILLISTE - PIEZAS DE REPUESTO Esploso macchina, Dessin appareil, Machine drawing, Explosions Zeichnung des Geräts, Diseño seccionado maquina. 22 20 21 39 38 17 10 31 43 Per richiedere i pezzi di ricambio senza codice precisare: codice del modello;... - Page 27 In order to improve the service, each servicing centre is requested to fill in the technical card on the following page at the end of every repair job. Please fill in this sheet as accurately as possible and send it to Telwin. Thank you in advance for your co-operation!
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Page 28: Repair Sheet
TECHNOLOGY TIG 172 AC/DC Official servicing centers Repairing sheet Date: Inverter model Serial number: Company: Technician: In which place has the inverter been used? Building yard Workshop Others: Supply: Power supply From mains without extension From mains with extension m... - Page 29 TELWIN S.p.A. - Via della Tecnica, 3 36030 VILLAVERLA (Vicenza) Italy 9001 Tel. +39 - 0445 - 858811 Fax +39 - 0445 - 858800 / 858801 E-mail: [email protected] http://www.telwin.com CERTIFIED QUALITY SYSTEM UNI EN ISO 9001:2000...