Direct Digital Controllers – AAC series



AAC20 controller is an advanced device to control building automation and HVAC systems. AAC20 provides 8xUI4xDI4/6xAO and 4xDO.Use of SVM (Sedona Virtual Machine) allows for quick and easy programming in real time-anytime from anywhere.The controller provides new extension M-Bus which supports communication with electric, water and heat meters for up to 20 devices.

“Out of box” controller has built in Modbus Gateway TCP/IP to Modbus ASCII/RTU, enabling you to connect additional modules/devices that communicate via Modbus RS485 without program it.

AAC20 controllers are advanced controllers to control building automation and HVAC systems. AAC20 provides 8xUI4xDI,4/6xAO and 4xDO. Use of SVM (Sedona Virtual Machine) allows for quick and easy programming in real time-anytime from anywhere. In addition, to increase the versatility of the controller it supports many open communications protocols like: BACnetModbusSOX1-wire, DALI or oBIX.

8xUniversal Inputs (8UI)

All universal inputs have 16-bit resolution which support the following types of inputs:

  • Temperature input support the following types of sensors:
    10K3A1, 10K4A1, Carel 10K, 20K6A1, 2.2K3A1, 3K3A1, 30K6A1, SIE1, TAC1, SAT1, Pt1000, Ni1000

For sensor Pt1000 and Ni1000 use only 16-bit resolution

  • Voltage input 0-10 V DC: input resistance 100 kΩ accuracy ±0,1% measurement resolution 3 mV @ 12-bit and 1 mV @ 16-bit
  • Current input 0-20 mA (external resistor 499 Ω required)
  • Resistive input 0-1000 kΩ: measurement resolution for 20 kΩ load 20 Ω @ 12-bit and 1 Ω @ 16-bit
  • Dry contact input
4xDigital Inputs (4DI)
  • Dry contact inputs
  • Fast pulse counter up to 100 Hz save in EEPROM memory
4/6xAnalog Outputs (4/6AO)

All analog outputs are equipped with 12-bit ADC provides 10 mV resolution and accuracy less than ±0,5%. They support the following output types:

  • Output 0-10 V DC maximum load up to 20 mA (AO6- 5 mA)
  • PWM: 0,01 Hz, 0,1 Hz, 1 Hz, 10 Hz, 100 Hz

AO5 and AO6 can only be use if 1-Wire port is not in use, please notice for AO6 maximum current load is up to 5 mA

4xDigital Outputs (4DO)
  • Relay output (NO) max. 3 A, 230 V AC/30 V DC
  • ARM Cortex-M4 204 MHz
  • ARM Cortex-M0 204 MHz
  • Interface RS485 half-duplex
  • Baud rate: 2400 to 115200 bps
  • 2x Ethernet with built-in switch
  • 1-Wire Interface
  • M-bus Interface: up to 20 devices (options)
  • Micro SD card slot
  • USB Host Interface
  • Protocols: Modbus, BACnet, SOX, 1-Wire
Power supply
  • 24 V AC/DC
  • Dimension: 106x110x62 mm
  • Construction: UL approved, self-extinguishing plastic (PC/ABS)
  • DIN rail mounting (DIN EN 50022 norm)
  • Cooling: internal air circulation
  • Operating temperature: -10°C to 50°C
  • Storage temperature: -40°C to 85°C
  • Relative humidity: 5 to 95%, no condensation
  • Ingress Protection Rating: IP40 – for indoor installation