Megmeet Dex PM3000 User Manual
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Megmeet Dex PM3000 User Manual

Dex fully-digital converter co2 /mag/mig multi-function welding power source
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Dex Fully-digital Converter CO /MAG/MIG
Multi-function Welding Power Source
Dex CM3000
Dex PM3000
User Manual
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Summary of Contents for Megmeet Dex PM3000

  • Page 1 User Manual Dex Fully-digital Converter CO /MAG/MIG Multi-function Welding Power Source Dex CM3000 Dex PM3000...
  • Page 2 Version ：V1.0 Code ： R33010360 Shenzhen Megmeet Electric Co., Ltd(Megmeet) provides customers with all-around technical supports, including but not limited to opening CAN communications, welding process database software upgrading, and after-sales service etc. Users can contact a nearby representative office or Customer Service Center of Megmeet, or directly contact Megmeet Headquarter.
  • Page 3 Please keep it properly and deliver to the user. Megmeet will consistently carry out product development and innovation. If the actual product is not in conformity with the content, parameters, or diagrams in this document, the actual product shall prevail. This document may subject to change without notice and Megmeetreserves the right of final interpretation of this document.
  • Page 4 Safety precautions Safety Definition In order to use the welding power source safely and correctly to prevent harm to you or others and other damages, this manual uses various types of warning labels.Please be sure to follow theinstructions carefully. The following signs are classified according to the degree of danger or damage: Danger Please follow the instructions,otherwise it may cause death or serious injury.
  • Page 5 electric shock hazard.  Maintenance operation can only be carried out 5 minutes after disconnecting the power supply. At this time, the welding power indicator light will be completely extinguished. Confirm that the positive and negative bus voltage should be under 36V, otherwise it may lead to electric shock hazard. ...
  • Page 6 ventilation or use breathing apparatus; otherwise, the operator may get asphyxiated due to lack of oxygen.  Welding process will produce harmful fumes and gases. Therefore, please ensure adequate ventilation or use breathing apparatus, otherwise, it will endanger your health. ...
  • Page 7 Operating environment should be free of obvious mechanical vibration or mechanical shock. Inclination angle of welder shall not be more than 15 °. Dust, metal dust and corrosive gases in ambient air shall not exceed the normal content Avoid the exposed to rain or rainwater invasion to fan.

  • Page 8: Table Of Contents

    Contents Chapter I Product Overview ......................... 1 1.1 Brief Introduction ........................1 1.2 System Composition ....................... 1 Chapter II Wiring Installation ......................2 Unpacking ..........................2 Installation Requirements ....................... 2 Precautions for Handling ......................2 Serial Number of Machine ..................... 2 Machine Installation and Electrical Connection ..............

  • Page 9: Chapteri Product Overview

    Special welding control method can be customized for customers.  Three-electrical level technique with an inverting frequency up to 180KHz is adopted.  Dex CM3000 can be used for welding with a variety of welding materials including carbon steel,  stainless steel, and galvanized sheet etc. ...

  • Page 10: Chapterii Wiring Installation

    2 Chapter II Wiring Installation ChapterII Wiring Installation The chapter presented the installation requirements of welding machine, as well as the operation steps and precautions associated with the installation. 2.1 Unpacking The machine is packedwitha specially designed& durable package. 1. Please confirm whether the outer package of the product is intact. 2.

  • Page 11: 380Vac Power Input Cable

    Chapter II Wiring Installation 3 3. Please use specified cable. 4. Do not touch the machine with wet hands. 5. Please do not put heavy objects on the cable. 6. Tap-water pipe and the building body steel bar may not be fully grounded. Please do not use it to connect the safety ground wire.

  • Page 12: Wire Feedingrollerinstallation

    Wire FeedingRollerInstallation 2.5.4  Dex CM3000 Remove the black plastic knob from wire feed rollerby counter-clockwisedirection. Install the wire-feeding roller according to operation requirements. Afterwire feeding roller installation, tighten black plastic knob by clockwise. Wire diameter is marked on the wire feed roller. The marked wire diameter is correspondingslotdiameter of wire feeding roller.

  • Page 13: Wire Spoolinstallation

    Chapter II Wiring Installation 5 Wire SpoolInstallation 2.5.5 1. Rotate the end cover of the coil shaft by clockwise direction to loosen the end cover. 2. Push in the wire coil;Align the slot of wire coil so that the slot can successfully enter the terminal of disc shaft.

  • Page 14: Chapter Iii Dex Cm3000Function Description And Operation

    6 Chapter III Dex CM3000 ChapterIII Dex CM3000 Function Description and Operation 3.1 Front Panel Function description offront panel is as shown in Fig. 3-1. Fig.3- 1 Function Description of Front Panel 3.2 Buttons and Knobs Button operation is divided into short-press (Touch) and long-press(Hold). Long-press must be hold more than 3 seconds until the system responses.

  • Page 15: Gas Detection

    Chapter III Dex CM3000 7 3.4 Gas Detection Check whether there is gas or not, and gas flow rate. 1. Touch “Gas Detection” button, LED light will be on. Gas starts to flow. Then gas flow ratecan be checked. Gas detection function will be shut downautomatically 30 second later.

  • Page 16: Internalmenu

    8 Chapter III Dex CM3000 2. Under this circumstance, the LED will be onsimultaneously. Rotate the knob to adjust the range of arc dynamics -9~0~+9. 3.7 InternalMenu The button is to enter into internal menu. 1. Long pressing "Function" key more than 3 seconds to enter into internal menu.Short-Pressing the button to exit the internal menu.
  • Page 17 Chapter III Dex CM3000 9 0～10seconds 0FF（0） Spot welding time Software Version Query Error Record 0～199 Machine Model Query Switch of Rapid Welding OFF(Standard Mode/Standard Welding Mode Welding Mode) MMA Selection Switch Synergic/Separation Switch OFF (Synergic)  Slow Wire Feeding Speed（F10）...
  • Page 18 10 Chapter III Dex CM3000 2. Turn the knob on the right panel to adjust F13 parameters (shown in table 3-6). 3. Shortpress “Function” key to exit from internal menu and F13 parameter settings is completed. Table3- 6Parameter Table of Transition Time of Wire Feeding Speed...
  • Page 19 Chapter III Dex CM3000 11 2. Adjust F20 parameters by rotating the right knob (table 3-9) 3. Press “Function” key again to exit from internal menu, F20 parameter settings is completed. Table3-9ParameterTable of DC Burn-Back Voltage Function Code Unit Adjusting Range...
  • Page 20 12 Chapter III Dex CM3000 Arc Characteristic Slope Slope Voltage Amplitude Current Fig.3-5 Quick Rising Slope and Amplitude of Current  Welding Control（F25） 0 means two steps, 1 means four steps, 2 means special 4 steps, 3 means spot welding. Default value is 0(two steps) 1.
  • Page 21 Chapter III Dex CM3000 13  Arc Starting Time（F29） 1. Long press "Function" key more than 3 seconds to enter into internal menu, turn the left knob to F29. 2. Turn the right knob to adjust parameters under F29 (shown in table 3-18).
  • Page 22 14 Chapter III Dex CM3000 Table3- 8Parameter Table of MMA Hot-Starting Current Function Code Unit Adjusting Range Step Length Default Value 0~60A  MMAThrusting Current (F54) Step 1. Enter into internal menu by long pressing “Function” key; turn the panel knob to F54.
  • Page 23 Chapter III Dex CM3000 15 Table3-26Parameters of Arc Ending Function Code Unit Adjusting Range Step Length Default Value 0～10 Seconds  Spot Welding Time（F2E） Step 1. Long press "Function" key more than 3 seconds to enter into internal menu, turn the left knob to F2E.
  • Page 24 16 Chapter III Dex CM3000 Fig.3-10 Model Query Display Interface 2. Press the "FN" key,nixie tube displays welder model, as shown in figure 3-11. Fig.3- 11 Model Display Interface  MMA-Function Switch（FC2） Step 1. Enter into internal menu by long pressing “Fn” key; turn the panel knob to FC2.

  • Page 25: Chapter Iv Dex Pm3000Function Description And Operation

    Chapter IV Dex PM3000 17 ChapterIV Dex PM3000 Function Description and Operation 4.1 FrontPanel Function description of front panel is as shown in Fig. 4-1. Fig.4-1 Function Description ofFrontPanel Table4-1 Function Description Number name Instruction for Each key Storage Save the selected welding parameters Invocation Invoke the saved parameters Gas Detection...

  • Page 26: Wire Inching

    18 Chapter IV Dex PM3000 4.2 Wire Inching Wire is sent to tip of welding torch by manual under non-welding condition. Step 1. Press on "Wire Inching" key, the LED light will be on. 2. The wire inching speed is rated wire feeding speed. The maximumwire inching speed is 8 meters/min. Release the function button;...

  • Page 27: Arc Dynamics

    Chapter IV Dex PM3000 19  Attention Parameter for arc starting and ending can be only regulated in “Synergic” mode. 4.5 Arc Dynamics Arc dynamicsis to adjust hardness of arc. Harden the arc by adjusting in positive direction and soften arc by negative direction Arc dynamicsis described as shown in Table 4-2 andFig.4-3.

  • Page 28: Arc Ending Parameter

    20 Chapter IV Dex PM3000 4. After the parameter for arc starting adjustment is completed, press the key of arc starting parameter key; when the indicator of parameter of arc starting is off, exit the arcing starting parameter setting. 5. Arc starting parameter can be set in 2T, 4 T, and special 4 T. 4.7 Arc Ending Parameter Parameter for arc ending During arc welding and welding ending, the involved parameters such as wire feeding speed,...
  • Page 29 Chapter IV Dex PM3000 21 Spot-Welding Process Welding Torch Switch No-Load Voltage Gas Delivery Welding Voltage Slow Wire Feeding Wire Feeding Speed Welding Current Preflow Burn-Back Welding Process Lagging Gas Delivery Chopping Fig.4- 6 Logic Diagram of Spot-Welding Step 1. Press the "Welding Control" key, switch to spot-welding mode. 2.
  • Page 30 22 Chapter IV Dex PM3000  The logic is shown as figure 4-8. Welding Torch Switch No-Load Voltage Gas Delivery Welding Slow Wire Feeding Voltage Wire Feeding Speed Welding Current Arc- Lagging Burn-Back Preflow Arcing Welding Process Retreating Chopping Process Process Delivery Fig.4- 84T Logic Diagram...

  • Page 31: Storage And Invocation

    Chapter IV Dex PM3000 23 Step 1. Press the "Welding Control" key, switch to Special 4T mode. 2. Set parameter for arc starting, and detail can be seen in parameter for arc starting setting. 3. Set parameter for arc ending, and detail can be seen in parameter for arc ending setting. 4.9 Storage and Invocation ...
  • Page 32 24 Chapter IV Dex PM3000 1. Press the "Function" keymore than 3 seconds to enter the internal menusettings and the LED will be on. Press "Function" key to exit the internal functions settings, the LED will go out. 2. Enter the internal menu settings, select the parameters, and press the "Execution" key to confirm; When the LED displays "OFF", it would use the default welding power parameters.
  • Page 33 Chapter IV Dex PM3000 25  Pre-gasTime（F11） Gas delivery time before arc starting. Step 1. Enter into internal function, and adjust the welder panel knob to F11.Press the "Fn" key, and the right nixie tube flashes. 2. Turn the knob on the right panel to adjust the F11 parameters (shownin table 4-5), press the "Fn" key to confirm, and F11 parameter setting is completed.
  • Page 34 26 Chapter IV Dex PM3000 1. Enter into the internal function, and adjust the welder panel knob to F15.Press the "Fn" key, and the right nixie tube flashes. 2. Turn the knob on the right panel to adjust the F15 parameters (shownin table 4-9), press the "Fn" key to confirm, and F15 parameter setting is completed.
  • Page 35 Chapter IV Dex PM3000 27 1. Enter into the internal function, and adjust the welder panel knob to F22.Press the "Fn" key, and the right nixie tube flashes. 2. Turn the knob on the right panel to adjust the F22 parameters (shownin table 4-12), press the "Fn"key to confirm, and F22 parameter setting is completed.
  • Page 36 28 Chapter IV Dex PM3000 Function Code Unit Adjusting Range Step Length Default Value 0~200 Schematic diagram of pulse and dual pulse parameter. As shown in the figure4-14. Welding Torch Switch (4 T) No-Load Gas Delivery Voltage Intense Pulse Voltage Correction Given Voltage Weak Pulse Voltage Correction...
  • Page 37 Chapter IV Dex PM3000 29 1. Enter into the internal function, and adjust the welder panel knob to F31.Press the "Fn" key, and the right nixie tube flashes. 2. Turn the knob on the right panel to adjust the F34 parameters (shownin table 4-18), press the "Fn" key to confirm, and F31 parameter setting is completed.
  • Page 38 30 Chapter IV Dex PM3000 Step 1. Enter into the internal function, and adjust the welder panel knob to F42.Press the "Fn" key, and the right nixie tube flashes. 2. Turn the knob on the right panel to adjust the F42 parameters (shownin table 4-22), press the "Fn" key to confirm, and F42 parameter setting is completed.
  • Page 39 Chapter IV Dex PM3000 31 2. Turn the knob on the right panel to adjust the F52 parameters (shownin table 4-25), press the "Fn" key to confirm, and F52 parameter setting is completed. Table4-25 Parameter Table of MMA Arc-Starting Current Function Code Unit Adjusting Range...
  • Page 40 32 Chapter IV Dex PM3000 Fig.4-18 Error Query Display Interface 2. Press the "Fn" key, adjust panel right knob to query error record.  Machine Model Query (FB2) Step 1. Enter into internal function, and adjust lest panel knob to FB2 (shown in figure 4-19). Fig.4-19 Model Query Display Interface 2.

  • Page 41: Chapterv Troubleshooting

    * Keypress check it ,according to the panel serial 1～8 Error The key is stuck. number. (Dex CM3000) Please check whether the relevant key is * Keypress jammed or not, according to the plate Error The key is stuck. 1～17 number.
  • Page 42 34 Chapter V Troubleshooting Fault Code Fault Type Display Left Right Fault Description and Reason Solutions Nixie Nixie Tube Tube Overcurrent is too high. nozzles and the contact tip is inadhesion, and if 2. Output diode module is damaged. the welding wire is stick to work-piece and occur close short).

  • Page 43: Chaptervi Maintenance

    Chapter VI Maintenance 35 ChapterVI Maintenance 6.1 Daily Inspection  Safety warning Daily inspection can only be performed after turning off the power of the user distribution box and the machine (Visual inspection which does not require contacting the conductor is excluded) to avoid electric shock, burns and other personal injury accidents.

  • Page 44: Periodic Inspection

    36 Chapter VI Maintenance 6.2 Periodic Inspection  Safety Warning 1. To ensure safety, regular checks should be performed by professionals. 2. Regular check can only be performed after turning off the power of the user distribution box and the welder (Visual inspection which does not require contacting the conductor is excluded) to avoid electric shock, burns and other personal injury accidents.

  • Page 45: After-Sales Services

    Chapter VI Maintenance 37 5. Connect the positive output terminal and negative output terminal with wire on the secondary side to cause short circuit. 6. Connect the pins 3 & 8 of communication connection terminal DB9 with wire on the control side to cause short circuit.

  • Page 46: Annex I Technical Specifications

    38 Annex I Technical Specifications Annex I Technical Specifications Annex 1-1 Technical specifications of welding power Welder Dex CM3000 Dex PM3000 Control Mode Digital Control Rated Input Voltage/Phase 3 Phase AC380V -15%～+21% Number 45～65Hz Input Power Supply Frequency Power Factor 0.94...

  • Page 47: Annex Ii Electrical Connection Diagram

    Annex II Electrical Connection Diagram 39 Annex II Electrical Connection Diagram WPPM3312M3 WPCM3312U1 DisplayPanel 显示板 1 2 3 4 1 2 3 4 5 6 1 2 3 4 WPPM3312M2 DSP Main Control Panel DSP主控制板 1 2 3 4 5 6 7 8 1 2 3 4 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10...

  • Page 48: Annex Iii System Configuration Table

    Customized according to customer requirements. *Notes: Shenzhen MegmeetWelding Technology Co., Ltd. (Megmeet) continues to develop and innovateour product. If the contents, parameters, pictures and objects in the user manual are inconsistent with the actual product, the actual machine shall prevail. We will not made additional notification with respect to the change, and the Company has the final interpretation of the user manual.
  • Page 49 AlMg 1.0/1.2 *Notes: Shenzhen MegmeetWelding Technology Co., Ltd. (Megmeet) continues to develop and innovate the product. If the contents, parameters, pictures and objects in the user manual are inconsistent with the actual product, shall prevail. We will not made additional notify with respect to the change, and the Company has the final interpretation of the user manual.

  • Page 50: Annex Iv Structural Detail Drawing

    17. M2 Main Control R11112689 R11101148 Amplifier Board Board 9. Main Radiating Fan R34020061 18. Input Air Switch R34010077 R11101270 (Dex CM3000 ） 19. Input Cable 10. Display Board R13500126 R11101149 Dex PM3000 （ ） Attached Fig.4-1DexCM/PM3000Structural Detail Drawing Full-Digital Control CO...
  • Page 51 Shenzhen Megmeet Welding Technology Co., Ltd. Shenzhen Megmeet Welding Technology Co., Ltd. WelderWarranty Bill WelderWarranty Bill User: User: Detailed Address: Detailed Address: Postal Code: Contact Person: Postal Code: Contact Person: Tel.: Fax: Tel.: Fax: Machine model: Machine model: Power: Machine Number:...
  • Page 52 7. If you have any questions, please contact with the agent or contact our company directly. company directly. Customer Service Center of Shenzhen Megmeet Electric Co., Ltd. Customer Service Center of Shenzhen Megmeet Electric Co., Ltd. Address: Shenzhen Megmeet Welding Technology Co., Ltd. Address: 5F, Address: Shenzhen Megmeet Welding Technology Co., Ltd.
  • Page 53 Shenzhen Megmeet Welding Techology Co., Ltd 5f,Ziguang information Harbor, Langshan Road, Nanshan district, Shenzhen. www.megmeet.com weld4s@megmeet.com Tel:+86-755-86600500 Fax:+86-755-86600840 Postcode:518057 Megmeet will continue devoting to development and innovation of products. Megmeet reserves the right to modify technical data and product appearance without advance notice.

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