GFXTermo4 PID controller 4 loops for DIN rail



GFXTERMO4 is a multi-loop control system that controls four process loops in a completely independent manner. Configuration of I/O resources is very rapid and flexible thanks to a programming tool that guides the user in the selection of parameters. Each control loop has:

  • Process input
  • Input for external CTs or CT / linear input
  • Control output
  • Cooling output Other auxiliary I/Os:
  • Two digital inputs
  • Two relay outputs

The use of two independent serial ports provides efficient communication ability. The two serials are defined as follows:

  • "local bus" to create a GFXTERMO4 network and connect it to an operator panel or industrial PC. Uses Modbus RTU protocol and reaches a speed of 115 Kbps.
  • "field bus" to integrate with architectures that already use industrial field buses such as: Profibus DP, CANopen, DeviceNet, Modbus RTU, Ethernet Modbus TCP.
  • The presence of "intelligence" directly on the board lets the user create fully independent and reliable controls. The device installs on the DIN rod or with two M4 screws.


  • 4 universal process inputs
  • 4 independent hot/cold PIDs
  • 4 main outputs
  • 4 auxiliary analog inputs
  • 4 configurable outputs: relay / logic / TRIAC / continuous
  • 2 configurable relay
  • 2 digital inputs
  • Standard communication port: Modbus RTU
  • Optional port for Fieldbus: Profibus DP, CANopen, DeviceNet, Modbus RTU, Ethernet Modbus TCP
  • Installs on DIN rod and panel