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FCU-HL (BACnet MSTP / Modbus RS485)


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FCU-HL (BACnet MSTP / Modbus RS485)

FCU-HL (BACnet MSTP / Modbus RS485)

Explore Pre-loaded Application for 256 Types of Fan Coil Units 
To minimize time and simplify the commissioning process, the FCU controller is delivered with a 
built-in application, which supports the most popular types of fan coil units. A dedicated DIP 
switch allows for adjusting parameters of the application. Additionally, in the BACnet protocol, the 
application has a built-in function that allows to automatically bind master and slave controllers in 
the groups. 
Experience the Freedom of Control Offered by the Sedona Framework
FCU-HL is a configurable and freely programmable controller with Modbus RTU/ASCII and 
BACnet MS/TP protocols onboard. The possibility of creating a tailor-made application with the 
power and flexibility offered by the Sedona Framework makes the controller useful not only for fan 
coil control. Sedona is an open-source software environment designed to make it easy to build 
smart, networked, embedded devices, which are well-suited for implementing control 
Freely programmable controller with a modern programming tool and 18 onboard I/Os is suitable 
for most types of fan coil units and other comfort management applications. 

4 Special Inputs 
Take advantage of a special input with support for the most popular types of temperature sensors, 
ability to read voltage, resistance, current, and dry contact measurements, with a fast pulse 
counter saving up to 100 pulses per second directly to the EEPROM memory. 

4 Digital Inputs 
Dry contact inputs - made for monitoring. 100 Hz fast pulse counter with overriden function saves 
the real-time values to the non-volatile memory of the controller. 

5 Digital Outputs 
There are onboard: 3 digital outputs 6 A for fan control, 1 digital output 10 A for electric heater, 
and 1 digital output 6 A for cooling valve actuator. 

3 Analog Outputs 
0-10 V DC analog outputs dedicated for a heating actuator, cooling actuator, and fan speed 

2 Triac Outputs 
The FCU-HL controller is equipped with two triac outputs dedicated to heating and cooling of 
thermal valve actuators. Outputs can be connected to actuators with a 24 V AC power supply. 
Triac outputs can work as typical binary outputs for binary temperature control or with PWM 

Open Communication 
The powerful FCU-HL controller is equipped with two RS485 interfaces with open protocols, 
BACnet MS/TP and Modbus RTU/ASCII. You can connect up to 128 devices on one bus. 

Simplified Configuration and Commissioning Process 
You can prepare your application with the use of a free of charge programming tool or configure 
the FCU-HL controller using our Quick Start-up manual and built-in DIP switches.


Hardware Specification 
ARM Cortex-M4 processor
2 RS485 interfaces
mini USB type B interface
Programmable DIP switches
DIP switches for configuration
Status LED indicators
DIN rail mounted
18 I/Os onboard

4 Special Inputs (SI) 
Temperature input: 10K3A1, 10K4A1, Carel 10K, 20K6A1
2.2K3A1, 3K3A1, 30K6A1, SIE1, TAC1, SAT1
Resistive input 0-1000 kΩ

Voltage input 0-10 V DC
Current input 0-20 mA
Dry contact input
Fast pulse counter up to 100 Hz saved in the EEPROM memory

4 Digital Inputs (DI) 
Dry contact inputs
Fast pulse counter up to 100 Hz saved in the EEPROM memory

5 Digital Outputs (DO)
3 digital outputs 6 A NO for fan control
1 digital output 10 A NO for electric heater and 
1 digital output 6 A NO for cooling valve actuator

3 Analog Outputs (AO) 
Output 0-10 V DC maximum load up to 20 mA
PWM: 0.01 Hz, 0.1 Hz, 1 Hz, 10 Hz, 100 Hz 

2 Triac Outputs (TO) 
0.5 A @ 24 V AC for heating and cooling actuators
PWM: 0.01 Hz, 0.1 Hz, 1 Hz, 10 Hz, 100 Hz

Free software iSMA Tool & FCU Updater

Power Supply 
230 V AC


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