Allen-Bradley 1794-ADN

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1794-ADN

Type

Remote I/O adapter

Application

Distributed I/O

Used with

1794 FLEX I/O system

I/O module capacity

8

Power consumption at 24V

7.9 W

Inrush current at 24V

23 A for 2 ms

Power dissipation, max

4.6 W @ 19.2V DC

Thermal dissipation

15.7 BTU/hr @ 19.2V DC

Power supply 24V current load

330 mA

Power supply 24V output current, max

450 mA

Power supply input voltage, nom

24V DC

Operating voltage range

19.2…31.2V DC (includes 5% AC ripple)

Isolation voltage

Tested @ 850V DC for 1 s, user power to system

Dimensions (HxWxD), approx

87 x 68 x 69 mm 3.4 x 2.7 x 2.7 in.

Temperature, operating

-20…+70 °C (-4…+158 °F)

Technical documents (1)

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

Key features

• Capacity for 8 I/O modules
• Operating voltage range 19.2 to 31.2V DC
• Isolation tested at 850V DC for 1 s
• Maximum power dissipation 4.6 W at 19.2V DC
• Approx. 87 x 68 x 69 mm (HxWxD)

About the Allen-Bradley 1794-ADN

The 1794-ADN is a FLEX I/O DeviceNet adapter for 8 I/O modules. It takes 24V DC nominal, 19.2 to 31.2V DC including 5% AC ripple, consumes 7.9 W at 24V with a 24V current load of 330 mA, and passes up to 450 mA at 24V to the modules. It works from -20 to +70 °C and measures approximately 87 x 68 x 69 mm (HxWxD). The 5094-AENTR is named by the maker as the successor (Engineering Replacement).

What is the 1794-ADN used for?

It is the head of a FLEX I/O node on DeviceNet, connecting up to 8 I/O modules to the controller and powering them from a 24V DC supply.

Lifecycle and successor

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

OEM successor: 5094-AENTR

Before you order

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

Read the catalog number 1794-ADN, 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.