Weco Discovery 281 AC/DC Instruction Manual
  1. Manuals
  2. Brands
  3. Weco Manuals
  4. Welding System
  5. Discovery 281 AC/DC
  6. Instruction manual

Weco Discovery 281 AC/DC Instruction Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Cod.006.0001.0480
08/05/2013 v2.11
ENGLISH
WECO srl
Via S. Antonio, 22 - BELVEDERE
36050 TEZZE SUL BRENTA (VICENZA) ITALY
Tel.+39 0424 561943 – Fax +39 0424 561944
www.weco.it - E-mail info@weco.it
Discovery 281 AC/DC
Instruction manual
GB

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Discovery 281 AC/DC and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Weco Discovery 281 AC/DC

Summary of Contents for Weco Discovery 281 AC/DC

  • Page 1 Cod.006.0001.0480 08/05/2013 v2.11 ENGLISH WECO srl Via S. Antonio, 22 - BELVEDERE 36050 TEZZE SUL BRENTA (VICENZA) ITALY Tel.+39 0424 561943 – Fax +39 0424 561944 www.weco.it - E-mail info@weco.it Discovery 281 AC/DC Instruction manual...
  • Page 2 Cod.006.0001.0480 08/05/2013 v2.11 Discovery 281 AC/DC ENGLISH 2/30...

  • Page 3: Table Of Contents

    SPARE PARTS..............25 INSTALLATION ..............5 ELECTRICAL DIAGRAM ........... 27 CONNECTIONS TO THE ELECTRICAL MAINS NETWORK 5 16.1 DISCOVERY 281 AC/DC............ 27 PREPARING FOR MMA WELDING ........5 16.2 TORCH CONNECTOR ............28 PREPARING FOR TIG WELDING ........6 Torch ................... 28 Up &...

  • Page 4: Introduction

    This symbol accompanies important information concerning the execution of the relevant operations. Discovery 281 AC/DC is an advanced technology three-phase welding power source for AC and DC TIG welding operations. AC TIG functions are ideal for aluminum, magnesium and related alloys welding.

  • Page 5: Rear Panel

    Cod.006.0001.0480 Discovery 281 AC/DC 08/05/2013 v2.11 ENGLISH PREPARING FOR MMA WELDING REAR PANEL 1. Set the welding power source ON/OFF switch to “O” (unit de- energized). 2. Plug the power cable plug into a mains socket outlet. 1: Welding power source ON/OFF switch.

  • Page 6: Preparing For Tig Welding

    Cod.006.0001.0480 08/05/2013 v2.11 Discovery 281 AC/DC ENGLISH PREPARING FOR TIG WELDING energized). 6. Plug the power cable plug into a mains socket outlet. Installation with cooling unit 1. Remove the screws from the power source cabinet. 2. Loosen the screws of the upper brackets of the cooler and open out the brackets slightly.
  • Page 7 Cod.006.0001.0480 Discovery 281 AC/DC 08/05/2013 v2.11 ENGLISH welding arc. 19. Use the flow control valve to adjust the flow of gas as required while the gas is flowing out. 20. Set the required welding parameter values on the user interface.

  • Page 8: User Interface

    Cod.006.0001.0480 08/05/2013 v2.11 Discovery 281 AC/DC ENGLISH USER INTERFACE CODE SYMBOL DESCRIPTION This LED illuminates to confirm the presence of power on the output sockets. This LED illuminates to show an anomaly in the operating conditions. See “ALARMS MANAGEMENT”(§ 9 page 11).
  • Page 9 Cod.006.0001.0480 Discovery 281 AC/DC 08/05/2013 v2.11 ENGLISH Data setting: The display shows the various welding menus relative to the selected processes. The display shows the selected parameter. AC TIG mode: Press the button to select the parameter to be set. Possible choices:...

  • Page 10: Unit Power-Up

    Cod.006.0001.0480 08/05/2013 v2.11 Discovery 281 AC/DC ENGLISH UNIT POWER-UP Set the welding power source ON/OFF switch to “I” to switch on the unit. THERMAL ALARM! The message appears on the following displays: D3 First power-up or power-ups following a RESET procedure The welding power source sets up for welding with the factory presets.

  • Page 11: Torch Loading

    Cod.006.0001.0480 Discovery 281 AC/DC 08/05/2013 v2.11 ENGLISH TORCH LOADING WARNING! Make sure the torch in use is correctly sized in relation to the welding current required and for the available and selected cooling type. This prevents the risk of burns to which the operator is potentially exposed, potential faults, and irreversible damage to the torch and the system.

  • Page 12: Welding Parameters

    Cod.006.0001.0480 08/05/2013 v2.11 Discovery 281 AC/DC ENGLISH WELDING PARAMETERS For a better understanding of the parameter functions described in the table, refer to the following diagram. (I1) WELDING CURRENT (I2) BASE CURRENT (I3) FINAL CURRENT (I4) START CURRENT (t1) SLOPE UP...

  • Page 13: Final Current

    Cod.006.0001.0480 Discovery 281 AC/DC 08/05/2013 v2.11 ENGLISH Final current This parameter can harm electronic boards when welding is performed on equipment that incorporates such devices. During electrode welding the parameter makes it possible to obtain a uniform deposit of filler material from the start to the end of the...

  • Page 14: Ac Balance

    Cod.006.0001.0480 08/05/2013 v2.11 Discovery 281 AC/DC ENGLISH Consequences of a higher value: − Arc concentration. − Reduction of heat-affected zone. − Reduction of heat-affected zone. − Slower melt speed. AC balance This parameter establishes the positive wave vs. negative wave time ratio.

  • Page 15: Parameters Activation

    Cod.006.0001.0480 Discovery 281 AC/DC 08/05/2013 v2.11 ENGLISH 10.1 PARAMETERS ACTIVATION The welding parameters are available in accordance with the selected welding mode and procedure. Certain parameters are available only after other parameters or functions of the unit have been enabled or set.

  • Page 16: Welding Settings

    Cod.006.0001.0480 08/05/2013 v2.11 Discovery 281 AC/DC ENGLISH WELDING SETTINGS 11.1 ELECTRODE WELDING (MMA) This button serves to select the following welding mode: 11.1.1 MMA PARAMETERS SETTING (1ST LEVEL) Press this button to scroll the list of settings to edit. The selected parameter and its value are shown on the following displays: D3 Using the encoder, edit the value of the selected setting.

  • Page 17: Dc Tig Welding

    Cod.006.0001.0480 Discovery 281 AC/DC 08/05/2013 v2.11 ENGLISH 11.2 DC TIG WELDING This button serves to select the following welding mode: DC TIG The following welding modes are available: PULSED DC TIG SYNERGIC PULSED DC TIG SPOT DC TIG Use this button to select one of the following torch trigger procedures: 2 STEP 4 STEP 4 STEP BI-LEVEL 11.2.1 DC TIG PARAMETERS SETTING (1ST LEVEL)

  • Page 18: Ac Tig Welding

    Cod.006.0001.0480 08/05/2013 v2.11 Discovery 281 AC/DC ENGLISH If both remote controllers are connected, the foot pedal assumes priority over the UP/DOWN or potentiometer TIG torch. 11.3 AC TIG WELDING This button serves to select the following welding mode: AC TIG...

  • Page 19: Ac Tig Special Functions Menu

    Cod.006.0001.0480 Discovery 281 AC/DC 08/05/2013 v2.11 ENGLISH PARAMETER MIN DEFAULT MAX MIXED AC-DC WAVE AC WAVE IN MIX AC-DC 10 % 50 % 80 % COOLING DEVICE MOUNTED OFF TORCH FILLING UP *1: Remote control types: − UP/DOWN or potentiometer TIG torch.

  • Page 20: Jobs Management

    Cod.006.0001.0480 08/05/2013 v2.11 Discovery 281 AC/DC ENGLISH JOBS MANAGEMENT Personalised welding settings, or JOBs, can be saved in memory locations and subsequently uploaded. Up to 50 jobs can be saved (j01-j50). The settings of the SETUP menu are not saved.

  • Page 21: Torch Trigger Modes

    Cod.006.0001.0480 Discovery 281 AC/DC 08/05/2013 v2.11 ENGLISH Exit without confirmation Use the encoder to select the following setting: ESCAPE Press the button. Press any button (except S5). This action will automatically close the menu. Exit with confirmation Press the button.

  • Page 22: Hf Welding

    Cod.006.0001.0480 08/05/2013 v2.11 Discovery 281 AC/DC ENGLISH 13.4 4T HF WELDING 1. Bring the torch up to the work until the electrode tip is approximately 2 or 3 mm away. 2. Press (1T) and release (2T) the torch trigger. The arc strikes without contact with the workpiece and the voltage discharges (HF) cease automatically.

  • Page 23: Spot Hf Welding

    Cod.006.0001.0480 Discovery 281 AC/DC 08/05/2013 v2.11 ENGLISH 13.8 2T SPOT HF WELDING 1. Bring the torch up to the work until the electrode tip is approximately 2 or 3 mm away. 2. Press (1T) the torch trigger. The arc strikes without contact with the workpiece and the voltage discharges (HF) cease automatically.

  • Page 24: Technical Data

    Cod.006.0001.0480 08/05/2013 v2.11 Discovery 281 AC/DC ENGLISH TECHNICAL DATA Model Discovery 281 AC/DC EN 60974-1 Construction standards EN 60974-3 EN 60974-10 Class A Supply voltage 3 x 400V ~ ± 15 % / 50-60 Hz Mains protection 25 A Delayed...

  • Page 25: Spare Parts

    Cod.006.0001.0480 Discovery 281 AC/DC 08/05/2013 v2.11 ENGLISH SPARE PARTS 25/30...
  • Page 26 Cod.006.0001.0480 08/05/2013 v2.11 Discovery 281 AC/DC ENGLISH N° CODE DESCRIPTION 011.0013.0011 LATERAL HEAT SINK PLATE 011.0013.0009 LATERAL PLATE 010.0002.0005 H.F. TRANSFORMER 050.5152.0000 LOGIC FRONT PANEL (EUROPE) 050.5152.0001 LOGIC FRONT PANEL (RUSSIAN) 014.0002.0010 KNOB 042.0003.0033 POWER TRANSFORMER 021.0000.0001 KIT FOR GAS CONNECTORS 044.0004.0004...

  • Page 27: Electrical Diagram

    Cod.006.0001.0480 Discovery 281 AC/DC 08/05/2013 v2.11 ENGLISH ELECTRICAL DIAGRAM 16.1 DISCOVERY 281 AC/DC 27/30...

  • Page 28: Torch Connector

    Cod.006.0001.0480 08/05/2013 v2.11 Discovery 281 AC/DC ENGLISH 16.2 TORCH CONNECTOR Foot pedal controller cod. 021.0004.3360 Torch 2 kOhm - 10 kOhm potentiometer Up & down torch 16.3 REMOTE CONTROLLER CONNECTOR cod. 021.0004.0602 Torch with potentiometer 2 kOhm - 10 kOhm potentiometer...
  • Page 29 Cod.006.0001.0480 Discovery 281 AC/DC 08/05/2013 v2.11 ENGLISH 29/30...
  • Page 30 Cod.006.0001.0480 08/05/2013 v2.11 Discovery 281 AC/DC ENGLISH 30/30...

Table of Contents