Dual loop controller (X2 OS) ideal for zoning and general applications. 230VAC and 24V versions available

The TCX2 is a programmable electronic universal controller with communication capabilities. Each control loop may use 2 PI sequences and 6 binary stages. The TCX2 comes with a built in RS485 communication interface that allows peer to peer communication with an operation terminal.

Communication plug-ins allow for integration of the controller into a network. Currently available are plug-ins for BACnet and MODBUS. There is also a Wi-Fi and Ethernet communication option available which supports Modbus TCP and BACnet IP. An embedded webserver provides a web interface to access the controller in order to change the connection settings and to operate the controller.

Flexible application configuration is made with a parameter-setting routine using the standard operation terminal.

Complete parameter sets may be copied by use of an accessory called AEC-PM1 or exchanged with a PC using an RS485-USB converter, Wi-Fi or Ethernet communication and the EasySet program.


  • Fan coil units
  • VAV units
  • Fan, pump control
  • Underfloor fans
  • Ventilation
  • Cooling ceilings
  • Radiant heating
  • Chilled beams

Type Overview (see ordering for details)

Standalone  BACnet / Modbus
over Wi-Fi
 BACnet / Modbus
over Ethernet
 BACnet / Modbus
over cable




  • Models for 24 VAC or 230 VAC power supply
  • 2 universal configurable control loops
  • Universal PI and/or binary control for any input/output
  • Multiple auxiliary functions: heat-cool auto changeover, automatic enable, set point compensation, occupancy control
  • Economizer function
  • Differential, averaging, min. and max. functions
  • Light switching function
  • 8 free assignable alarm or interlock conditions
  • RS485 bus communication with remote operation terminal OPA2-VC
  • BACnet MS/TP  or slave MODBUS communication over RS485 RTU or ASCII
  • BACnet IP or Modbus TCP communication over Wi-Fi or Ethernet (Wi-Fi or Ethernet interface required)
  • BACnet B-ASC device profile
  • Webserver that supports TCX2 operation trough browser or mobile devices (Wi-Fi or Ethernet interface required)
  • Peer to peer communication to optional X2 operation terminal OPxx-VC
  • 2 selectable analog inputs (VDC) and 5 passive inputs (NTC)
  • 3 analog outputs (VDC) and 5 relays with each a normally open contact
  • 2 TRIAC outputs fixed to 24 VAC, switching to GND
  • Webserver that supports TCX2 operation trough browser or mobile devices (Ethernet or Wi-Fi interface required)
  • Password protected programmable user and control parameters
  • Clone parameter set with plug-in memory AEC-PM1 - easily transport application parameters to multiple controllers
  • Exchange data with PC using the EasySet tool


 Product Name

 Product No.


 TCX2-24273  40-11 0103  24 VAC controller standalone

 cabinet mounted
 with communication
 2 controll loops
 4 passive inputs NTC
 2 analog inputs VDC
 3 analog outputs VDC
 5 relays
 zone controller (VAV, FCU, etc.)

 TCX2-24273-230  40-11 0104  230 VAC controller standalone
 TCX2-24273-MOD   40-11 0100

 24 VAC controller
 with Modbus RTU or ASCII communication

 TCX2-24273-230-MOD  40-11 0102  230 VAC controller
 with Modbus RTU or ASCII communication
 TCX2-24273-BAC   40-11 0099  24 VAC controller
 with BACnet MS/TP communication
 TCX2-24273-230-BAC  40-11 0101  230 VAC controller
 with BACnet MS/TP communication
 TCX2-24273-WEM  40-110119  24 VAC controller
 with Modbus TCP over Wi-Fi communication
 TCX2-24273-ETM   40-110120  24 VAC controller
 with Modbus TCP over Ethernet communication
 TCX2-24273-WEB  40-110128  24 VAC controller
 with BACnet IP over Wi-Fi communication
 TCX2-24273-ETB   40-110129  24 VAC controller
 with BACnet IP over Ethernet communication



X2-Operation Terminals
Remote and built-in operation terminals
Temperature Sensors
Sensing elements or accessories for temperature sensors
AEI-4UI - Input Extension
Input extension for X2 controllers
AEC-PM1 - Memory
External memory for parameter sets for TCX2-series controls
AEX-BAC - BACnet Plug-In
Communication Plug-In for BACnet MS/TP communication
AEX-MOD - Modbus Plug-In
Communication Plug-In for MODBUS slave communication
AMM-1 TCX2 - Panel Mounting Kit
Panel mounting kit for TCX2 - series controller
AEC-SMA - Wi-Fi Antenna Cable Kit
For controllers with external (not built-in) Wi-Fi antenna
AEC-USB - USB to RS-485 Converter Cable Kit
For programming X2-devices with EasySet tool


Operation Manual

Install Sheet

Application Notes