Mini 4U4A-H-IP

The module has 4xUI (Universal Inputs) and 4xAO (Analog Outputs). UI can work in 5 different modes: temperature, voltage, current, resistance, dry contact. AO are 0-10 V DC  with max. 20 mA load allow direct control of relays (12 V DC) or SSR with PWM support.

The modules are factory-equipped with the two most popular open communication protocols: Modbus TCP/IP and BACnet IP, which are selected using DIP switches.

Built-in Modbus Gateway TCP/IP to Modbus ASCII/RTU, enables you to connect additional modules/devices that communicate via Modbus RS485.

Addressing the modules is done via rotary switches, which facilitates and accelerates the process of commissioning the system.

The built-in mini USB allows for initial configuration of the unit without power supply.


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Key Features

  • Small dimension
  • Manual override switches
  • Built-in 3 light control modes
  • All digital inputs work as fast counters up to 100 Hz
  • Universal inputs have 16-bit resolution which increase the accuracy of measurement
  • Wide range of supported temperature sensors (NTC, PT1000 etc.)
  • Automatic detection of the signal type in the case of universal inputs
  • Digital outputs 230 V AC max. 3 A or 8 A allow direct control without additional relays
  • LEDs indicate the status of inputs and outputs
  • Supports open standards: BACnet or ModBus
  • Built in Modbus Gateway TCP/IP to RS485


  • Communication

    • Interfejs RS485 half duplex
    • 1 x Fast Ethernet
    • Up to 99 devices on the bus
    • Protocols: Modbus or BACnet
    • Baud rate: 2400 to 115200 bps
  • 4 x Universal Inputs (4UI)

    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 16bit resolution

    • Voltage input 0-10 V DC: input resistance 100 kΩ accuracy ±0,1% measurement resolution 3 mV @ 12bit and 1 mV @ 16bit
    • Current input 0-20 mA
    • Resistive input 0-1000 kΩ: measurement resolution for 20 kΩ load 20 Ω @ 12bit and 1 Ω @ 16bit
    • Dry contact input
  • 4 x Analog Outputs (4AO)

    All analog outputs are equipped with 12bit 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
    • PWM: 0,01 Hz, 0,1 Hz, 1 Hz, 10 Hz, 100 Hz
  • Housing

    • Dimension: 35x110x62 mm
    • Construction: plastic, self-extinguishing (PC/ABS)
    • DIN rail mounting (DIN EN 50022 norm)
    • Cooling: internal air circulation
  • Environment

    • 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
  • Power Supply

    • 24 V AC/DC
  • Platform

    ARM Cortex-M3