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iSMA-B-FCU

The family of configurable and, in the case of FCU controllers , freely programmable room controllers, was developed to meet market needs.

To reduce engineering costs   and for easier/faster commissioning, the devices come with a universal factory program, depending on the product they cover the most common room regulation/control functions. 

By default, FCU controllers are capable of MODBUS RTU/ASCII and BACnet MSTP communication.

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It is possible to change the parameters of the application with DIP switches. Furthermore, when using the BACnet protocol, the master and slave controllers can be assigned to groups using the function built into the factory application. 20 groups on 1 bus, 6 devices in 1 group)

In the event that the factory application does not meet the individual requirements, the application can be modified or even rebuilt from the ground up.

 

Modification of the program can be done online in real time via the USB port of the device, or even offline using a simulator application running on a PC.

3 devices with different hardware configurations are available, which have different Triac outputs and power supply.

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Main features:

  • Factory universal application for the most common tasks

  • For 2 or 4 pipe systems

  • The parameters of the application can be set with DIP switches

  • Programming/program modification in real time

  • Addressing up to 1-255 with DIP switches

  • 18 inputs/outputs

  • Sedona Framework 1.2

  • Fast ARM processor

  • Modbus RTU/ASCII or BACnet MSTP protocol

  • 2 RJ12 (1 RS485) connectors for connecting the wall operator or other external MODBUS RTU/ASCII device 

  • The 230V version has a built-in 24VAC for powering external devices.

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iSMA-B-FCU

Inputs

  • 4 Special inputs - voltage, resistance, voltage-free contact

  • 4 digital inputs - voltage-free contact 

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Outputs

  • 3 digital outputs  6 A (Fan speed)

  • 1 digital output 10 A (Electric heater)

  • 2 Triacs 0.5 A @230V or 0.5 A/0.3A* @24VAC (heating or cooling valve actuators)

  • 3 analog outputs 0-10 V DC (heating or cooling valve actuators or fan speed)

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Platform

  • ARM Cortex-M3

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Supply voltage

  • 24 V AC or 230 V AC

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Imax=0.3A=I TO1 +I TO2 +I 24V out

Communication

  • RS485 interface half duplex

  • Up to 128 devices on the bus

  • Protocols: Modbus or BACnet

  • Baud rate: from 2400 to 115200 bps

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Device housing

  • Dimensions (WxDxD) 123.6 x 136.6 x 54 mm (123.6 x 171.2 x 54.9 mm)

  • Material plastic, self-extinguishing (PC/ABS)

  • DIN rail mountable (according to DIN EN 50022 standard)

  • Cooling: internal air circulation

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Environmental parameters

  • Operating temperature: -10°C to 50°C

  • Storage temperature: -40°C to 85°C

  • Relative humidity: from 5% to 95%, non-condensing

  • IP protection: IP40 - for indoor use

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