The 1746-NO8I is an Allen Bradley SLC 500 series analog current output module under Rockwell Automation Bulletin 1746 platform. This analog output module is officially discontinued and supplied as spare part for legacy process control systems, compatible with 1746-A4, 1746-A7, 1746-A10 and 1746-A13 SLC chassis.

This 1746-NO8I provides 8 analog current output channels, supporting standard 4–20mA signal range. It is widely used to control valve positioners, variable frequency drives, proportional actuators and other field instruments that accept 4-20mA analog control signals. The eight channels are arranged in four isolated groups of two channels each, which helps suppress ground loop interference common in analog signal wiring. Each channel supports software calibration within the SLC controller program to adjust output accuracy on site.

The module occupies one slot in the SLC 500 chassis and communicates with SLC 5/03, SLC 5/04 and SLC 5/05 processors over the 1746 backplane bus. It comes with a removable terminal block for convenient field wiring, allowing technicians to swap the module without re-terminating all connected field cables. Status LEDs on the module indicate power and fault conditions for fast on-site troubleshooting. The operating temperature range is 0°C to 60°C, designed for cabinet installation in factory and process control environments.

As an end-of-life SLC analog I/O card, brand new factory original 1746-NO8I is no longer available through Rockwell official distribution channels. All our stocked 1746-NO8I units are inspected, powered up and function tested before packing, to support emergency breakdown repair, spare part stocking and line retrofits for plants still running SLC 500 process controls. For long-term migration, Rockwell’s recommended upgrade route is CompactLogix controllers paired with Compact 5000 analog I/O modules.

It is commonly matched with other SLC analog and digital modules such as 1746-NI16I, 1746-NI4, 1746-NO4I, 1746-NO4V, 1746-IA16, 1746-IB8 and 1746-OW16. Contact our sales team to check stock availability, request datasheet, wiring diagram or formal quotation for 1746-NO8I and other SLC 500 spare modules. We provide secure packaging and worldwide delivery for system integrators, process plants and automation end users.

Related search terms: 1746-NO8I datasheet, 1746-NO8I wiring diagram, 1746-NO8I vs 1746-NO4I, 1746-NO8I 4-20mA output, SLC 500 analog current output module.

FAQ
What is 1746-NO8I?
1746-NO8I is Allen Bradley SLC 500 8-channel analog current output module for 4–20mA control signals.

Is 1746-NO8I discontinued?
Yes, Rockwell has discontinued the 1746-NO8I, only tested surplus spare units are available on the market.

What is the difference between 1746-NO8I and 1746-NO4I?
Both are 4-20mA current output modules; 1746-NO8I has 8 channels while 1746-NO4I has 4 channels.

How many isolated groups on 1746-NO8I?
Four groups, two channels per group with group isolation.

Can 1746-NO8I fit in 1746-A4 chassis?
Yes, compatible with all standard 1746 SLC 500 chassis.

1746-NO8I