GFX Multifunction

Main features & Overview


Extremely flexible and compact rear panel instrument.

Consists of a “base” containing the PID microprocessor controller which holds a functional module such as: 5/10/15Amp power solid state relay, double continuous output, double relay, single relay.

Utilized mainly for heating hot extrusion channels, injection, and in all multizone configurations.

In addition, thanks to the use of popular field buses, Geflex_Multifunction can be integrated in various architectures.


Ideal for control of resistive loads and other actuators from 5 Amperes to 15 Amperes

  • Three versions:
    MASTER - independent temperature control and communication unit
    SLAVE - independent temperature control unit
    EXPANSION - for three-phase loads
  • Protection: IP20
  • Universal temperature input, accuracy 0.2%
  • Configurable digital input
  • Logic output or "cooling" relay
  • Load current detection with integrated Current and Voltage Transformer
  • Heat/cool PID, selection of cooling fluid, self-tuning, auto-tuning "one-shot", soft-start
  • 4 generic alarms, LBA and HB alarms
  • 2 configurable relay outputs
  • Field bus for Master Standard: "Modbus RTU" with Serial 485 optically
  • Option: "PROFIBUS DP", "CANopen"


Gefran product range brochure
Power control
GFX Multifunction datasheet
CANopen installation and operation manual
Catalog Read Me
GF_eXpress ReadMe
GF_eXpress UserGuide
HW - Installation and Operation Manual
SW - Programming and Configuration
Catalog ver. 2.91.0
GF_eXpress ver 2.1.39
Address Map Modbus


UL Certifications - UL - GFX - 5 - 15