RevPi AIO analog IO module

RevPi AIO – Analog I/O Module

Besides 3 digital I/O expansion modules, an analog I/O expansion module is available. By using RevPi AIO, a Revolution Pi system is expanded by 2 analog inputs, 2 analog outputs and 2 RTD channels. Like all I/O modules RevPi AIO features a 28-pin I/O connector at the front. Inputs, Outputs and RTD channels are galvanically isolated to each other and to the logic circuit. RevPi AIO is protected against interference according to EN61131-2 requirements and may be operated from -30°C to 55°C ambient temperature.

Analog Outputs

RevPi AIO features 2 analog outputs with a 16 bit resolution for connecting analog actuators. Supported output ranges for voltage and current:

Voltage output range

  • 0 – 5 V
  • 0 – 10 V
  • +/- 5 V
  • +/- 10 V
  • 0 – 5.5 V
  • 0 – 11 V
  • +/- 5.5 V
  • +/- 11 V

Current output range:

  • 4 – 20 mA
  • 0 – 20 mA
  • 0 – 24 mA

Analog Inputs

RevPi AIO features 4 analog inputs, equipped with an 24 bit ΔΣ DAC for connection analog sensors, like a level or proximity sensor. Supported intput ranges for voltage and current:

Voltage intput range

  • 0 – 5 V
  • 0 – 10 V
  • +/- 5 V
  • +/- 10 V

Current input range:

  • 4 – 20 mA
  • 0 – 20 mA
  • 0 – 24 mA
  • +/- 25 mA
RevPi AIO RTD Pins

RTD Channels

Besides 4 analog input channels, RevPi AIO also features 2 seperate RTD input channels. The 2 RTD inputs enable temperatures to be measured with high precision from -165°C to +600°C in steps of 0.5°C using common RTDs sensors like Pt100/Pt1000 probes. The probes can be connected directly to the module with 2, 3 or 4 cables.