Single Phase AC Constant Current Controls

The EN6021 Control is an integrated timer/controller designed for diverse welding applications.




  • Control adjusts current output every cycle
  • Current High, Low and Pre limits
  • Pulse Width Monitor
  • PLC compatible via EtherNet/IP or MODBUS Function Code 04, 16 and 43 through low-cost serial (RS232 or RS485) or ethernet interfaces
  • Detachable 128x64 dots graphic (8 lines) LCD Programming Pendant (RPP2) with data backup and 10 foot cable


  • Primary or Secondary Coils
  • I/O Expansion Card - provides additional 16 DC inputs, 16 DC outputs and 4 AC outputs
  • Integrated Pressure Sense and Control
  • Water Flow Switch
  • Linear Displacement Transducer (LDT) Option
  • Networking - two Communication Card options:
    • MBTCP/RTU implements Modbus/TCP communication over Ethernet networks or using serial RS232 or RS485 connections
    • EIP/MBTCP implements either EtherNet/IP or Modbus/TCP communication


  • USB B interface for ENLINK programming
  • USB A Memory Stick Jack for Schedule backup and Weld Log storage
  • Spot, Pulsation or Seam Sequence
  • Programmable options: Slope, Preheat, Quench, Temper, Postheat
  • Linked Programs
  • External Schedule Select
  • Event Outputs
  • Advanced Error Outputs
  • 100 Programs/Schedules
  • Programming in phase shift or kA
  • 24 VDC flexible I/O (24 in/16 out); some mapable between weld functions, events and simple I/O sequences (16 in/16 out available for sequencer) with output protection
  • I/O Sequencer/Programmer
  • Stepper with Force and Current Presets
  • Diverse schedule capabilities provide maximum application versatility
  • 2) 4-20 mA / 0-10V analog input and output provided for pressure sensing and control
  • Program Select
  • Retraction
  • Weld Log (57,600 entries) and Error Log (1,000 entries) with real time clock

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