Freely programable Room Application Controller RAC18 with 4UI, 4DI, 5DO, 3AO, 2TO, 1xRS485, 1xUSB and 2 fail-safe protected Ethernet ports. Power supply 24 V AC/DC.

Room and Zone Management
The RAC18-IP controller is a multifunctional device providing comfort in a single room or a zone in the building. Onboard 18 I/O’s with Ethernet and serial ports make the controller a versatile system for comfort management, light and blind control, integration and monitoring.

High-end Technology at the Edge
Powerful, IoT ready nano EDGE ENGINE allows unprecedented capabilities for a microcontroller-based device. Take advantage of a time-saving automatic BACnet exposure, real-time programming, and cloud connectivity.

Openness and Reliability
Take advantage of the IP connectivity with open protocols like MQTT, BACnet, and Modbus, and ensure the highest energy efficiency for your building with any supervisory system. Daisy-chained RAC18-IP controllers are protected by a unique fail-safe system on each Ethernet port to provide maximum reliability.

Seamless Programming and Maintenance
Maintain and program your device from anywhere in real-time with a dedicated, free of charge tool. Easy replacement process with system and user data saved on a removable SD card.

4 Universal Inputs
Support for over 20 types of temperature sensors and voltage, resistance, current, and dry contact measurements on each universal input.

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

5 Digital Outputs
Digital outputs equipped with normally open 3A relays allow for direct control without additional relays.

3 Analog Outputs
0-10 V DC control with 10 mA accuracy, PWM modes, and a maximum load of up to 20 mA to power external relays makes the output suitable for a variety of scenarios.

2 Triac Outputs
The controller is equipped with two triac outputs that can be used for heating and cooling 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 modulation up to 0.5 A load.


Technical Specification


Hardware Specification
Highest performing ARM Cortex-M7
Built-in real-time clock (RTC)
RS485 interface
2 fail-safe protected Ethernet interfaces with a built-in switch
USB type C interface
microSD card
18 I/Os onboard
Status LED indicators
DIN-rail mounted

4 Universal Inputs (UI)
Temperature input: 10K3A1, 10K4A1, Carel 10K, 20K6A1, 2.2K3A1, 3K3A1, 30K6A1, SIE1, TAC1, SAT1, Pt1000, Ni1000 0C, Ni 1000 20C, Ni1000 LG 2.
Resistive input 0-1000 kΩ
Voltage input 0-10 V DC
Current input 0-20 mA
Dry contact input

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

5 Digital Outputs (DO)
NO relay output
Resistive load max. 3 A @ 230 V AC/30 V DC
Inductive load max. 75 VA @ 230 V AC/30 W @ 30 V DC

3 Analog Outputs (AO)
0-10 V DC output with 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

Modbus RTU/ASCII client
Modbus TCP/IP server
Free software: iC Tool

Power Supply
24 V DC ± 20%
24 V AC ± 20%

Power supply24 V AC, 24 V DC
Analog outputs3
Digital outputs5
Digital inputs4
Universal inputs4
Inputs typeUniversal, Digital
Outputs typeAnalog, Triac, Digital
Controller typeProgrammable
Communication protocolModbus RTU, BACnet IP


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