Rockwell 1794-IE12 I/O Analog Input Module

Rockwell 1794-IE12 I/O Analog Input Module

1749-IE12 Info.

1794-IE12 uses successive approximation to convert data and information.

The key switch position for 1794-IE12 is 3.

FLEX I/O High-Density Analog Modules

Catalog Numbers 1794-IE8, 1794-IE8XT, 1794-OE4, 1794-OE4XT, 1794-IE12, 1794-OE12, 1794-IE4XOE2, 1794-IE4XOE2XT, 1794-IE8XOE4

Overview of FLEX I/O and Your Analog Module

Overview Read this chapter to familiarize yourself with configurable features on the FLEX I/O High-Density modules.

The following table lists where to find specific information in this chapter.

FLEX I/O is a small, modular I/O system for distributed applications that performs all of the functions of rack-based I/O.

The FLEX I/O system contains the following components shown below:

adapter/power supply – powers the internal logic for as many as eight I/O modules

terminal base – contains a terminal strip to terminate wiring for two- or three-wire devices

I/O module – contains the bus interface and circuitry needed to perform specific functions related to your application\

FLEX I/O analog input, output, and combination modules are blocked transfer modules that interface analog signals with any Allen-Bradley? programmable controllers that have block transfer capability.

Block transfer programming moves input from the module’s memory to a designated area in the processor data table, and output data words from a designated area in the processor data table to the module’s memory.

Block transfer programming also moves configuration words from the processor data table to module memory.

The adapter/power supply transfers data to the module (block transfer write) and from the module (block transfer read) using BTW and BTR instructions in your ladder diagram program.

These instructions let the adapter obtain input values and status from the module, and let you send output values and establish the module’s mode of operation.

The module label identifies the key switch position, wiring, and module type.

A removable label provides space for writing individual designations per your application.

Indicators are provided to identify input fault conditions, and to show when power is applied to the module.

Technical Specifications for 1794-IE12

Manufacturer: Rockwell Automation

Brand: Allen-Bradley

Part Number/Catalog No.: 1794-IE12

Product Type: Flex I/O High-Density Analog Module

Inputs: 12 Single-ended

Resolution Voltage Current: 320 ?V/cnt

Conversion Rate: 8.0 ms

Input Current Terminal: 4-20mA

Input Voltage Terminal: +/- 10V

FlexBus Current: 80 mA

External DC Power Supply: 24V DC nom.

Isolation Voltage: 50V Continuous

Power Dissipation 1.2W @ 31.2V DC max.

Thermal Dissipation 4.1 BTU/hr. @ 31.2V DC max.

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