The 1746-NI16I is an Allen Bradley SLC 500 series analog current input module under Rockwell Automation Bulletin 1746 platform. This analog module is officially discontinued and supplied as spare component for legacy process control systems, compatible with 1746-A4, 1746-A7, 1746-A10 and 1746-A13 SLC chassis.

This 1746-NI16I supports 16 analog current input channels configured for 4–20mA signal range, which is the standard industry signal for transmitters, pressure sensors, level transmitters, flow meters and temperature transmitters in process applications. The 16 channels are arranged in four isolated groups of four channels each, providing group isolation to minimize ground loop interference common in analog signal wiring. Each channel can be individually calibrated within the SLC controller program.

The module occupies one slot in the SLC 500 chassis and communicates with SLC 5/03, SLC 5/04 and SLC 5/05 processors via the 1746 backplane bus. It uses a removable terminal block for field analog wiring, making field replacement convenient without reworking all sensor cables. LED indicators on the module show power status and fault alarms for fast on-site diagnosis. The operating temperature range is 0°C to 60°C for standard cabinet installation in factory and process control rooms.

As an end-of-life SLC analog I/O card, brand new factory original 1746-NI16I is no longer available through Rockwell official distribution channels. All our stocked 1746-NI16I units are inspected, powered up and function tested before packing, to support emergency breakdown repair, spare part stocking and line retrofits for users still running SLC 500 process controls. For long-term migration, Rockwell’s recommended upgrade route is CompactLogix controllers with Compact 5000 analog I/O modules.

It is often used together with other SLC analog and digital modules such as 1746-NI4, 1746-NO4I, 1746-IA16, 1746-IB8 and 1746-OW16. Contact our sales team to check stock availability, request datasheet, wiring diagram or technical quotation for 1746-NI16I 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-NI16I datasheet, 1746-NI16I wiring diagram, 1746-NI16I vs 1746-NI4, 1746-NI16I 4-20mA input, SLC 500 analog input module.

FAQ
What is 1746-NI16I?
1746-NI16I is Allen Bradley SLC 500 16-channel analog current input module for 4-20mA transmitter signals.

Is 1746-NI16I discontinued?
Yes, Rockwell has discontinued the 1746-NI16I, only tested surplus spare units are available.

What signal type does 1746-NI16I accept?
It is a current-only analog module for 4–20mA input signals.

How many isolated groups on 1746-NI16I?
Four groups, four channels per group with group isolation.

Can 1746-NI16I fit in 1746-A4 chassis?
Yes, compatible with all standard 1746 SLC 500 chassis.

1746-NI16I