iSMA MIX-38

PersoniWay
Written by PersoniWay10 mar 2025

The iSMA MIX-38 module integrates multiple types of inputs and outputs in a single unit, making it suitable for various building automation applications. Its compatibility with open communication protocols ensures seamless integration with existing Building Management Systems (BMS).

Description

The iSMA MIX-38 is a versatile I/O module designed for building automation systems. It features 8 Universal Inputs (UI), 12 Digital Inputs (DI), 6 Analog Outputs (AO), and 12 Digital Outputs (DO). The module supports both Modbus ASCII/RTU and BACnet MSTP communication protocols, selectable via DIP switches. Addressing is facilitated through rotary switches, simplifying the commissioning process. A built-in mini USB port allows for initial configuration without the need for an external power supply.

Key Features

  • 8 Universal Inputs (UI) with 16-bit resolution supporting temperature sensors, voltage (0-10V DC), current (0-20mA), resistive (0-1000kΩ), and dry contact inputs.
  • 12 Digital Inputs (DI) supporting dry contact inputs and fast pulse counting up to 100 Hz with EEPROM memory storage.
  • 6 Analog Outputs (AO) with 12-bit ADC providing 10 mV resolution, accuracy less than ±0.5%, and support for 0-10V DC output with PWM modes.
  • 12 Digital Outputs (DO) with relay outputs (normally open) rated at 3A @ 250V AC or 30V DC.
  • Supports Modbus ASCII/RTU and BACnet MSTP communication protocols.
  • Addressing via rotary switches for easy commissioning.
  • Built-in mini USB port for initial configuration without an external power supply.

Technical Specifications

  • Universal Inputs (UI): 8 (supports temperature sensors, voltage, current, resistance, and dry contact)
  • Digital Inputs (DI): 12 (dry contact, pulse counter up to 100 Hz)
  • Analog Outputs (AO): 6 (0-10V DC, PWM support)
  • Digital Outputs (DO): 12 (relay NO, max load 3A @ 250V AC / 30V DC)
  • Communication Protocols: Modbus ASCII/RTU, BACnet MSTP
  • Baud Rate: Selectable (2400–115200 bps)
  • Addressing: Rotary switches
  • Configuration Port: Mini USB
  • Power Supply: 24V AC/DC ± 20%
  • Operating Temperature: -10°C to 50°C (14°F to 122°F)
  • Storage Temperature: -40°C to 85°C (-40°F to 185°F)
  • Humidity: 5 to 95% RH (non-condensing)
  • Dimensions: 160 x 110 x 62 mm
  • Mounting: DIN rail (EN 50022 standard)
  • Housing Material: Self-extinguishing plastic (PC/ABS)
  • Ingress Protection Rating: IP40 – indoor installation

Applications

  • Building Management Systems (BMS)
  • HVAC control
  • Lighting automation
  • Energy monitoring
  • I/O expansion for BACnet and Modbus controllers

Resources

Synonyms & Related Terms

  • MIX-38 module
  • iSMA I/O module
  • iSMA MIX series

Conclusion

For further details on the iSMA MIX-38, please refer to the official datasheet and manufacturer's website.

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