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PLC Retrofits for Automated Welding Equipment: Feature Sheet

PWT's powerful PLC retrofits extend the usefulness and life of selected automated welding equipment such as Hobart DABBER TIG systems, Griffin automated welding machines, and others.
 
PLC
CPU

  • Memory Size: 30K
  • Fast (milli-seconds) Scan Time
  • Four Communication Ports
  • PLC Programming
    • Windows Based
    • Basic PLC, Math, Data Programming Instructions
  • Analog Input & Output Modules (3 Cards Each)
    • Total of 12 Channels
    • Output Range +/-10V
    • Resolution of 12 Bits
  • Discrete Input & Output Modules (1 Card Each)
    • Total of 32 Inputs
    • External Terminal Strip & Cable
Programming
Touch Panel


  • 10.4" TFT Color Panel
  • VGA Resolution: 640x480
  • 192 Touch Cells
  • Communication to PLC
  • Programming Screens
    • Waveform of Current, Arc Voltage, Wirefeed, Travel, Pulsation, & Gas Flow is Displayed
    • Associated Program Variable Placed with Graph
    • Keypad for Data Entry Displayed When Programmable Value Box is Selected
    • Diagnostic Screen with Messages is Displayed
    • I/O Status Screen
    • Process Screen Displays Programmed & Feedback Values
    • Set Up Screen with Preset Values & Overrides
    • Panel Recipe for Storing Different Schedules
    • Several Screens Can Be Scrolled with Easy Access Back to Home Screen
Weld
Current
Pulsation

  • Pulsation Frequency : 0.1 Hz to 10 Hz, in increments of 0.1 Hz
  • Current High Time: 0.01 Sec. to 10 Sec., in increments of 0.1 Sec
  • Weld Current High & Low
Arc
Voltage
Control

  • Arc Voltage Sampled Only During the High Current Pulse
  • Control Will Lock Out the AVC Slide Motor During Low Current Pulse
Wire
Feed

  • Wire Feed Reference Synchronized with Weld Current High
  • Controllable Wire Feed Retract Time & Feed Rate
Scaling
PC Boards

  • Scaling of Four Channels Per Board
  • Adjustments for Coarse Gain, Fine Gain, & Offset for Each Channel
  • High Stability Instrumentation Amplifiers
Manual
Parameter
Adjustment

  • Multi Turn Potentiometers Provided on the Operator Pendant
  • Allowable Override Adjustments Set by a Keypad Function
  • Override Values Can Be Reset on the Operator Pendant
Programmed
Shutdown

  • Slope Down Sequence of Weld Parameters in Event of Planned or Unplanned Weld Stop
  • Gas Stays on for Pre-programmed Post Flow Time in Case of Emergency Stop
Auto
Home

  • Axes Homed Automatically at End of Weld if Desired
  • Executed from Part Program
Hand
Held
Pendant


  • Six Inch Touch Screen
  • Screen Has Reference & Feedback Values Displayed
  • Setup Parameters
  • Overrides for Travel Speed, Weld Current, Arc Voltage, & Wire Feed
  • Discrete Operator Buttons
Wire Feeder
& Control

  • Wire Feed with Micro Stepping Motor
  • Motor Controller
  • Wire Feed Control Interface PC Board
  • Roller Sets Included
Gas Box
  • Four Flow Meters and Solenoids are Provided
  • Interconnection to PLC Control
Torch
Oscillation

  • Oscillation in One Axis During a Weld Program
  • Oscillation Distance, Feed Rate, & End Dwells are Programmable
  • Oscillator Slide Mounted to Existing Weld Torch Package
 

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