Allen-Bradley 1794-IE8

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1794-IE8

Type

Analog input module

Application

I/O module

Used with

FLEX I/O adapters and terminal bases

Voltage, input, max overload

30V, single channel, continuous

Current, input, max overload

32 mA, single channel, continuous

Input resolution

12 bits – unipolar 11 bits + sign – bipolar 5.13 µA/cnt 2.56 mV/cnt – unipolar 5.13 mV/cnt – bipolar

Data format

16-bit 2’s complement, left justified

Input conversion type

Successive approximation

Input conversion rate

256 µs all channels

Normal mode rejection ratio

Current input: -3 dB @ 9 Hz; -20 dB/decade -15.3 dB @ 50 Hz -16.8 dB @ 60 Hz, Voltage input: -3 dB @ 17 Hz; -20 dB/decade -10 dB @ 50 Hz -11.4 dB @ 60 Hz

Calibration

None required

Step response to 63% of FS, input

Current input: 18.2 ms, Voltage input: 9.4 ms

Dimensions (HxWxD), approx

46 x 94 x 53 mm (1.8 x 3.7 x 2.1 in.) 94 x 94 x 69 mm (3.7 x 3.7 x 2.7 in.) installed

Accuracy

Current input: 0.20% Full Scale @ 25 °C (77 °F), Voltage input: 0.20% Full Scale @ 25 °C (77 °F)

Temperature, operating

-20…+55 °C (-4…+131 °F)

Technical documents (1)

• Rockwell Automation FLEX I/O selection guide 1794-SG002

Key features

• Eight single-ended analog inputs per module
• Successive approximation input conversion
• 16-bit 2's complement data, left justified
• Accuracy of 0.20% full scale at 25 °C
• No calibration required

About the Allen-Bradley 1794-IE8

The 1794-IE8 is a FLEX I/O 8 point analog input module with 8 single-ended inputs. Resolution is 12 bits unipolar or 11 bits plus sign bipolar, and conversion takes 256 µs for all channels. Maximum continuous overload on a channel is 30V for voltage input and 32 mA for current input.

What is the 1794-IE8 used for?

It reads eight analog signals into a FLEX I/O node as 16-bit 2's complement data, left justified. Step response to 63% of full scale is 18.2 ms for current and 9.4 ms for voltage. It works from -20 to +55 °C.

Lifecycle and successor

Active Mature (Rockwell Automation lifecycle status, checked 24 October 2026).

Before you order

What to photograph or confirm so the right unit is quoted.

Read the catalog number 1794-IE8, the series letter and the firmware revision from the label. Send us a photo of the label and we confirm the match before we quote.