Medium Frequency DC Inverter Controls

iPAK2 is the next generation of our integrated timer/controller/inverter system for MF resistance welding. Like the original iPAK, the iPAK2 control section is housed in a cassette-type casing, which simply mounts onto the power pack for ease of maintenance and continues to deliver millisecond precision, constant current and constant power operation, comprehensive monitoring, along with new features to assure your weld quality. Please refer to the iPAK2 CPU Bulletin below.








  • Linked programming
  • Current Monitoring: High/Low limits and Pre-limit
  • Proportional valve controller (0-10 V)
  • Pressure Monitoring: High/Low limits
  • Analog Mode control (0-10 V)
  • High Current Output configurations – up to 300 kA weld current capability, higher on special applications
  • C-Shunt and Wear monitoring
  • Duty-cycle limiter
  • Real-time clock
  • Air-valve outputs 8
  • Short circuit proof outputs


  • Range of circuit breaker options (with or without ground fault protection)
  • ELR/2 Machine Protection Device (LMI's)
  • 3-phase line voltage monitor
  • Ethernet switch
  • Isolation Contactors
  • Programming tools WSP3 and NetFlash software


  • 256 weld programs (schedules).
  • 3 weld Intervals — Pre-heat + Main weld + Post heat.
  • Cascade / multivalve operation.
  • Up to 8 transformers and 8 main valve (WAV) outputs.
  • 7 auxiliary valves under program control.
  • 16 Inputs/ 16 Outputs (short circuit protected). Dedicated function.
  • Secondary or Primary current regulation.
  • Ethernet (2 simultaneous connections).
  • Ethernet/IP built-in on iPAK2v2. Optional adapter required on iPAK2.
  • RS232 Port.
  • RS485 Port.
  • Analog Port connects to Proportional Valve for weld force control, or can output a measured current waveform. Can also be used for direct analog control function.
  • Force profiling.
  • Electrode manager (Stepper functions) for up to 8 electrodes.
  • Current and force monitor.
  • C-Monitor checks for secondary circuit shunt or wear conditions.
  • Seam mode—change programs ‘on the fly’, up to 8 MOTOR command outputs.
  • Standard features mode reduces the available options for simple applications.
  • Feature and programming format common with EN7000 AC control.


  • Netflash

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