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Weiro WP-120A Operation Manual

Inverter plasma cutting machine
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THANKS FOR PURCASHING OUR PRODUCT
WP – 120A
INVERTER PLASMA CUTTING MACHINE
W E I R O
OPERATION MANUAL
(Read the manual carefully before installation, operation and maintenace)
Safety Depends on You
WEIRO are welding and cutting equipment is designed and built with safety
in mind. However, your overall safety can be increased by proper installation...
and thoughtful operation in your part. DO NOT INSTALL, OPERATE OR
REPAIR THIS EQUIPMENT WITHOUT READING THIS MANUAL AND
THE SAFETY PRECAUTIONS CONTAINED THROUGHOUT. And, most
importantly, think before you act and be careful.
C V . A N U G R A H D U T A N I A G A
Jln. Arief Rahman Hakim 51 Komplek Ruko 21 Klampis Blok D-1
Telp. 031 – 5990089, 5997259 (Hunting)
Fax. 031 – 5966099
Email : adn_office@yahoo.com

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Summary of Contents for Weiro WP-120A

  • Page 1 (Read the manual carefully before installation, operation and maintenace) Safety Depends on You WEIRO are welding and cutting equipment is designed and built with safety in mind. However, your overall safety can be increased by proper installation... and thoughtful operation in your part. DO NOT INSTALL, OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READING THIS MANUAL AND THE SAFETY PRECAUTIONS CONTAINED THROUGHOUT.

  • Page 2: Table Of Contents

    Index 1. Principle &Technical data…………………………………………………….(1 ) 2. Features & Applications……………………………………………………..(5 ) 3. Installation Guide………………………………………………………….….(6 ) 4. Operating Instruction …………...…………………………………………..(9) 5. Repair & Maintenance……………………………………………………..(12) １６...

  • Page 3: Data

    Principle & Technical data WP 120A Block diagram of principle 3~380V/50Hz Rectifier Rectifier & Inverter Transformer Filter Control circuit High frequency arc start Figure 1: Block diagram of principle This series of cutting machines applies IGBT Middle Frequency inverter technology. Line frequency 3-phase input volt are rectified by rectifier, inverted into MF AC by IGBT components, insulated by MF transformer, rectified and filtered by MF rectifier, then outputs DC power suitable for cutting.
  • Page 4 1. Main technical parameters Items Model WP120A Three phase 380 / Input volt (V) 50Hz Rated input capacity（KVA） 25.7 Rated input current（A） Range of output current（A） 30－120 Open load （V） Rated load volt（V） Rated duty cycle Air pressure for cutting torch 0.45 （MPa）...
  • Page 5 2. Main circuit diagram  WP120A Figure 3: Main Circuit Diagram of WP 120A １９...
  • Page 6 3.Main components list  WP120A Name Model Remark Circuit breaker DZ47-63D (40A/3P) Three-phase rectified module MDS100A-1200V (big) Varistor MYL1 625/5 SKM100GB128D V1～2 IGBT module Polypropylene capacitor MFD-DA01 4uF/500VAC IGBTZRB IGBT protection Board NBC-500Ⅱ.5.1.0 Main transformer LGK-100.3.1.0 Fast recovery diode module DWC2F100N060S Fast recovery diode module DWC2F100P060S...

  • Page 7: Applications

    Features & Applications This series inverter air plasma cutting machines, which are new-designed for metal processing, apply IGBT as well as PWM (Pulse width Modulation) soft switch technology. This series cutting machines can cut all types of metal materials, especially for high alloy steel and non-ferrous metals that can not be cut by using flame cutting machine.

  • Page 8: Guide

    Installation Guide 1． Pre-installation 1.1 Installation Environment The WP series is designed for use in adverse environments. Examples of environments with increased adverse conditions are:  In locations in which freedom of movement is restricted, so that the operator is forced to perform the work in a cramped (kneeling, sitting or lying) position with physical contact with conductive parts;...
  • Page 9 1.3 Power Source Connections Warning Thermal Arc advises that this equipment be electrically connected by a qualified electrician. ELECTRIC SHOCK can kill; SIGNIFICANT DC VOLTAGE is present after removal of input power. DO NOT TOUCH live electrical parts.  SHUT DOWN welding power source, disconnect input power employing lockout/tagging procedures.

  • Page 10: Installation

    4. Installation: This series of cutter is small, light and portable. They will be more convenient when being placed on the trolleys. Ensure the location where the cutter is to be placed is even. ACUT series of cutters wire diagram as Figure 5: Figure 4: Connection Chart for WP series 1.

  • Page 11: Instruction

    Operating Instruction 1. Functional introduction 1.1 Front panel illustration and parts number reference Figure 5: Front panel 1. “Gas test / Cutting” switch Switch to “Gas test”, check if gas flow is normal; to “cutting” to perform air plasma cutting. 2.
  • Page 12 1.2 Rear panel illustration and parts number reference Figure 6: Rear panel 1. Circuit breaker The function of circuit breaker is to protect cutting machine by automatic trip to turn-off power supply while the machine is overloaded or in failure. Normally, the circuit breaker flipped to upward means power-on.
  • Page 13 Cool down the heat components in the cutting machine. 2. Operating procedure 2.1 After going through periodical check process, power on the cutting machine, then working indicator will light up and cooling fan will spin. 2.2 Flip the “Gas test/Cutting” switch to “Gas test”. The gas valve in the machine will turn on and let gas flow up to one minute to remove condensed water drops accumulating in the torch.

  • Page 14: Maintenance

    Repair & Maintenance WARNING: Have a qualified electrician do the maintenance and trouble shooting work. Turn the input power off, using the disconnect switch at the fuse box before working inside the machine. 1. Attentions: 1． When problems such as abnormal cutting seam, arc-interruption, difficult arc-start occurs, please check easy-worn-out consumables like nozzle or electrode and replace them if they are bad consumption.
  • Page 15 № Trouble Causes What to do 1)Inspect power source Indicator lamp does not 1)Phase missing 2)Inspect cooling fan, light up and machine does transformer for ZKB/QDB, 2)Fuse broken（2A） not work when switched and main control board 3)Power cable broken 3)Inspect cable 1)Too high temperature 1)Stop working till machine Overheat indicator lamp...