CAI8 Module

CAI8 is an open frame CanBus module with CanOpen protocol mountable on a standard DIN rail, which provides 8 analog inputs.

The input mode can be modified by software, allowing the module to read differential voltage inputs with dynamics 0/10 V or +10/-10 V, current signals with dynamics 4/20 mA or 0/20 mA and potentiometers directly powered by a reference voltage source, protected from short circuits.

On CAI8P module all the analog inputs are configured to read only PT100 temperature transducers.

3 groups of spring-cage connectors are provided:

  1. 2 connectors for module 24 V power supply.
  2. 32 connectors grouped in 8 independent subgroups of 4 connectors. Each subgroup provides these connections:
    • Potentiometers positive reference voltage / Pole PT100.
    • Differential voltage input negative pole / Current input negative pole / Pole PT100.
    • Differential voltage input positive pole / Current input positive pole / Potentiometer center terminal.
    • Potentiometer 0 V reference.
  3. 6 connectors for the CanBus line (CANH, CANL e GND_CAN input, CANH, CANL e GND_CAN output).

Technical specifications

Dimensions (H x W x D) 88x132x55 mm
Mounting Standard DIN rail
Power supply 24 V (18 – 36 V)
Module power consumption 160 mA
Channels 8
Differential input voltage 0/10 V or +10/-10 V
Input current 4/20 mA or 0/20 mA
Minimum potentiometer resistance 1 kOhm
Potentiometer voltage reference 10 V
Converter resolution 12 bit
CanBus Baud Rate 125 kbps / 250 kbps / 500 kbps / 1 Mbps
Marking CE
Operating temperature 0 – 55 °C
Storage temperature -20 – 85 °C
Warehousing humidity 85% max non-condensing
CanOpen Standards DS301 – DS401

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