Allen-Bradley 1746-NO4I

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1746-NO4I

Type

Analog output module

Application

I/O module

Used with

SLC 500 1746 chassis

Number of outputs

4

Backplane current (mA) @ 5V

55 mA

Backplane current (mA) @ 24V

195 mA

Isolation voltage

Tested @ 500V AC and 710V DC for 60 seconds

Full scale

21 mA

Output range (normal)

0…20 mA -1 LSB

Output coding

0…32,764 for 0…21 mA

Converter resolution

14-bit

Conversion method

R-2R ladder

Step response

2.5 ms (5…95%)

Overrange capability

5% (0…21 mA -1 LSB)

Overall Accuracy

±0.541% of full scale

Overall accuracy drift, max

±70 ppm/°C of full scale

Gain error drift, max

±62 ppm/°C of full scale

Technical documents (1)

• Rockwell Automation SLC 500 systems selection guide 1747-SG001

Key features

• Four outputs on a single module
• 14-bit converter using the R-2R ladder method
• Output coding 0…32,764 for 0…21 mA
• Overrange capability of 5% (0…21 mA -1 LSB)
• Isolation tested at 500V AC and 710V DC for 60 seconds

About the Allen-Bradley 1746-NO4I

The 1746-NO4I is an SLC 4 point analog current output module, now discontinued. Its four outputs have a normal range of 0…20 mA -1 LSB and a full scale of 21 mA, from a 14-bit R-2R ladder converter with a step response of 2.5 ms (5…95%). It draws 55 mA at 5V and 195 mA at 24V from the backplane.

What is the 1746-NO4I used for?

It sends four current signals from an SLC 500 controller. Output coding is 0…32,764 for 0…21 mA, with 5% overrange capability, and isolation is tested at 500V AC and 710V DC for 60 seconds.

Lifecycle and successor

Discontinued (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 1746-NO4I, 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.