8 Channels digital input

To expand the number of controlled parameters, RDF has a series of plug-in modules housed in dedicated rack units. Inputs and Outputs
number can be expanded to manage an incredible amount of data:

  • Up to 256 analog inputs (8, 10, 12 or 16 bit resolution)
  • Up to 248 digital inputs (contact inputs on-off)
  • Up to 256 relays (digital output)
  • Up to 32 x 10bit resolution analog outputs.

They are configurable, both locally and remotely, and are programmable to generate alarms or run simple routines, called macros.
Furthermore, the I/O state can be read, both on site and remotely, at any time. There are two versions of dedicated rack mounts to host expansion modules:

  • PW-RACK, featuring an independent embedded power supply
  • BS-RACK, that uses power distributed via RS485

ANT148 module adds 8 optoisolated digital inputs, each state input can have its own independent ground. The input circuit is designed to accept DC and AC, and the customer can set the input voltage

Technical specification

Inputs: 8
Power Supply: 8 ÷ 24 VDC
Input Current: 2 ÷ 50 mA
Input Voltage: Range HI: 8 ÷ 100VDC or 4 ÷ 70VAC
Range LO: 4 ÷ 50VDC or 2 ÷ 35VAC
Input Frequency: 10 ÷ 60 Hz (AC only)
AUX power output: 12 ÷ 13,8VDC @ max 1A




ANT148-A 8 optically isolated contact INPUT module
ANT148-C 32 bit Pulse counter board with up to 8 inputs