Rockwell SLC 500 · Analogue Input Module

Rockwell 1746-NR4

Normal sale of the 1746-NR4 has ended. Spares may still be available, but the clock is running.

  1. ActiveSold and supported normally
  2. Phase OutRetirement announced, still orderable
  3. CancellationNormal sale ended, spares may remain
  4. Total DiscontinuationNo manufacturer supply or repair

ECS stage: Cancellation. Rockwell's published term: Discontinued.

Is the Rockwell 1746-NR4 discontinued?

The 1746-NR4 has been cancelled: no longer sold as a current product, though spares may remain available for a period. Its successor is the Compact 5000 I/O migration platform.

Source: Rockwell Automation. Last checked . Always confirm a specific part's status with the manufacturer before buying or planning a migration.

What Cancellation means for you

You can no longer order it as a normal product, and nothing new should be designed around it. If machines depend on it, you want spare stock you can rely on and a migration plan. Both start with knowing how many you run.

How ECS defines Cancellation · all four lifecycle stages

Before replacing an analogue module

With analogue I/O, the difficult part of a migration is often hidden in the configuration: signal type, range, scaling, resolution, isolation and any filtering used by the application.

We would capture both the hardware settings and the PLC scaling logic before choosing a replacement. That gives the commissioning engineer known reference values and avoids trying to recreate process calibration from a failed module.

ECS engineering guidance

1746-NR4 part details

Manufacturer
Rockwell Automation
Range
SLC 500
Name
SLC 500 RTD/Resistance Input Module
Summary
Four-channel RTD/resistance analog input module for Allen-Bradley SLC 500 systems. Supports 2-, 3-, and 4-wire RTD connections and other resistance inputs; Rockwell Automation lists the Bulletin 1746 I/O family as discontinued and no longer available for sale.
Successor
Compact 5000 I/O migration platform

Common questions about the 1746-NR4

Is the Rockwell 1746-NR4 discontinued?

The 1746-NR4 has been cancelled: no longer sold as a current product, though spares may remain available for a period. Its successor is the Compact 5000 I/O migration platform.

What replaced the 1746-NR4?

Rockwell lists the Compact 5000 I/O migration platform as the successor. Check compatibility with your machine before planning the change.

Can I still buy a 1746-NR4?

Not as a normal new product. Remaining distributor stock or designated spares may still be available. Buy any you need now.

An ECS engineer capturing a control panel on a tablet: PLC, drive and power supply identified and synced to Command Centre

Know where every unit is before one fails.

A Capture audit finds every 1746-NR4 on your site, photographs it where it sits and checks it against manufacturer lifecycle status, so you know your exposure and where your spares are before a failure stops a line.

  • Every device located, photographed and lifecycle-checked
  • Findings report, plus a populated Command Centre
  • No production downtime
See how Capture works

Related parts

All Rockwell parts · All manufacturers