Allen-Bradley 1794-IF4I

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1794-IF4I

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

16 bits – unipolar 15 bits + sign – bipolar 0.320 µA/cnt – unipolar 0.640 µA/cnt – bipolar 0.156 mV/cnt – unipolar 0.313 mV/cnt – bipolar

Data format

2’s complement 2’s complement percent, Binary, Offset binary

Input conversion type

Sigma Delta

Input conversion rate

2.5/5.0/7.5 ms all channels

Normal mode rejection ratio

-3 dB @ 12 Hz (300 Hz conversion rate) -80.0 dB @ 50 Hz (300 Hz conversion rate)

Calibration

Factory-calibrated

Step response to 63% of FS, input

Current or voltage input: 1200 Hz conversion rate = 0.6 ms 600 Hz conversion rate = 6.7 ms 300 Hz conversion rate = 13.4 ms 150 Hz conversion rate = 26.7 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

Resolution

16 bit unipolar 15 bit + bipolar

Accuracy

Current input: 0.1% Full Scale @ 25 °C (77 °F), Voltage input: 0.1% Full Scale @ 25 °C (77 °F)

Temperature, operating

0…55 °C (32…131 °F)

Technical documents (1)

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

Key features

• Four isolated analog input points
• Current or voltage input on each point
• Sigma Delta input conversion
• Factory-calibrated, 0.1% full scale accuracy at 25 °C
• Operating temperature range of 0 to 55 °C

About the Allen-Bradley 1794-IF4I

The 1794-IF4I is a FLEX I/O 16 bit, 4 point isolated analog input module. Resolution is 16 bits unipolar and 15 bits plus sign bipolar, with accuracy of 0.1% of full scale at 25 °C (77 °F) for current and voltage. Conversion takes 2.5, 5.0 or 7.5 ms for all channels, and continuous overload is 30V or 32 mA maximum on a channel.

What is the 1794-IF4I used for?

It reads four analog signals into a FLEX I/O node where each input must be isolated from the others. Data formats are 2's complement, percent, binary and offset binary.

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-IF4I, 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.