Allen-Bradley 1794-OE4

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1794-OE4

Type

Analog output module

Application

I/O module

Used with

FLEX I/O adapters and terminal bases

Output resolution

12 bit + sign 2.56 mV/cnt 5.13 µA/cnt

Data format

16 bits, 2’s complement, left justified

Output conversion type

Pulse-width modulation

Output conversion rate

1.024 ms all channels

Step response to 63% of FS, output

Voltage output: 24 ms

Current load on voltage output, max

3 mA

Accuracy

Current input: 0.425% Full Scale @ 25 °C (77 °F), Voltage input: 0.133% Full Scale @ 25 °C (77 °F)

Accuracy drift w/temp

Current input: 0.0069% Full Scale /°C, Voltage input: 0.0045% Full Scale/°C

Calibration

None required

Isolation voltage

50 (continuous), I/O to system, Type tested at 850V DC for 1 s, I/O to system, No isolation between individual channels

Power dissipation, max

4.5 W @ 31.2V DC

Thermal dissipation, max

15.3 BTU/hr @ 31.2V DC

Wire size

0.34…2.5 mm2 (22…2 AWG) solid or stranded shielded copper wire rated at 75 °C (167 °F) or greater 1.2 mm (3/64 in.) insulation max

Wire category

2 - On signal ports 2 - On power ports

Dimensions (HxWxD), approx

46 x 94 x 53 mm (1.8 x 3.7 x 3.1 in.) 94 x 94 x 69 mm (3.7 x 3.7 x 2.7 in.) installed

Temperature, operating

-20…+55 °C (-4…+131 °F)

Technical documents (1)

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

Key features

• Four single-ended analog outputs per module
• Pulse-width modulation output conversion
• No calibration required
• Voltage output current load up to 3 mA
• Operating temperature range of -20…+55 °C

About the Allen-Bradley 1794-OE4

The 1794-OE4 is a FLEX I/O 4 point analog output module with 4 single-ended outputs. Resolution is 12 bit + sign, at 2.56 mV/cnt or 5.13 µA/cnt, with 16 bit, 2's complement, left justified data. Conversion is pulse-width modulation at 1.024 ms for all channels, and the voltage step response to 63% of full scale is 24 ms. The 5094-OF8 is named by the maker as the successor (Engineering Replacement).

What is the 1794-OE4 used for?

It sends four analog signals from a FLEX I/O node. The voltage output takes up to 3 mA, and isolation is 50V continuous from I/O to system, with no isolation between channels. It dissipates up to 4.5 W at 31.2V DC.

Lifecycle and successor

Phased out (Rockwell Automation lifecycle status EOL, checked 24 October 2026).

OEM successor: 5094-OF8

Before you order

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

Read the catalog number 1794-OE4, 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.