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The Metasys Field Equipment Controllers (FEC) are a complete family of BACnet® compatible field controllers and accessories designed with the flexibility to meet a wide range of your HVAC control applications. Built on the ASHRAE standard for building automation system control and communication, these controllers support Johnson Controls commitment to open communication standards and greater control options for you. FAC Series controllers feature an integral real-time clock and support time-based tasks, which enables these field controllers to monitor and control schedules, calendars, alarms and trends. All FEC and FAC controllers feature selectable N2 or BACnet® MS/TP communication protocol, this allows them to be used as functional replacements for legacy N2 controllers.


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  • Supports peer-to-peer communications
  • Continuous Tuning Adaptive Control provides more efficient controls and reduces level of manual intervention
  • Advanced diagnostics for failure detection, resolution and prevention
  • Standard packaging and terminations simplify installation
  • Fiel Equipment Controllers have been tested by the BACnet Testing Labs (BTL) and are certified as BACnet Application Specific Controllers
  • FAC models feature an integral real time clock with on-board time schedules, calendars, trends and alarms and are BTL certified as BACnet Advanced Application Controllers (B-AAC)

Inputs8 UI + 6 BI

Outputs6 AO + 6 BO

Supply Voltage24 VAC

Integral DisplayNo

Communication BusRS-485, field selectable between BACnet MS/TP and N2 communications

Power Consumption14 max. VA

Ambient Operating Conditions0 to 50°C (32 to 122°F); 10 to 90% RH noncondensing; Pollution Degree 2

ProcessorRX630 32-Bit Renesas microcontroller

Memory4 MB flash memory and 1 MB RAM

TerminationsInput/Output: Fixed Screw Terminal Blocks FC Bus, SA Bus and Supply Power: 3-wire and 4-wire Pluggable Screw Terminal Blocks. FC Bus and SA Bus Port: RJ-12 6-pin Modular Jacks.

MountingHorizontal on single 35 mm DIN rail mount (preferred), or screw mount on flat surface with three integral mounting clips on controller

Housing MaterialABS and polycarbonate UL94 5VB self-extinguishing.

Housing Protection ClassIP20 (IEC529)

Working Days

Document TypeLanguage
Last Update DatePreviewDownloadsCopy Link
Advanced Application Field Equipment Controller (FAC)_LIT 1900759
EN 10 2020
FEC European Catalog Page
EN 2021
FAC European Catalog Page
EN 2021
Field Equipment Controller (FEC) Series_LIT 1900346
EN 06 2018
Metasys System Field Equipment Controllers and Related_LIT 12011042
EN 10 2020
Metasys System FEC1611 and FEC1621 Field Equipment Controller_PN 24-10143-136
EN 10 2019
FAC2611, Face Base, Revit2016, V0
EN 2016
FAC2612, Face Base, Revit2016, V0
EN 2016
FAC3611-0, FAC3611-0A, FAC3613, Face Base, Revit2016, V0
EN 2016