1794-IE8B Allen Bradley Flex 8 Point Analog Input Module

The Allen-Bradley 1794-IE8 is a component module of the Flex I/O product family. This module is an Analog input module, used with Flex I/O communication adapters and terminal bases for implementing Distributed I/O architecture.

Using the module’s Eight (8) single-ended, non-isolated, user configurable channels capable of receiving 0 to 20mA, 4 to 20 mA, +/- 10VDC and 0 to 10 VDC input signals, this module is capable of interfacing instruments such as field transmitters, analog indicating instruments, recorders, process loop controllers and other analog instruments that generates the compatible signal ranges.

This Flex I/O analog input module has a resolution of 12 bits when configured in unipolar mode and 11 bits plus sign for bipolar mode. It uses a successive approximation conversion and save the converted data in data format of eft justified, 16-bit 2s complement. It has a conversion rate 256?s on all channels with absolute accuracy of 0.20% Full Scale @ 25°C and accuracy drift of - 0.00428% Full Scale/°C for Voltage and 0.00407% Full Scale/°C for current input. This module does not require calibration.

The 1794-IE8 requires an external Power supply voltage range of 10.5-31.2VDC with nominal supply voltage of 24VDC. It requires a supply current of 60 mA. It requires use of terminal base for mounting and interfacing to input signal wiring. Compatible terminal bases are 1794-TB2, 1794-TB3, and 1794-TB3S, 1794-TB3T and 1794-TB3TS. Only one terminal base is needed by the module.