Allen-Bradley 1746-NI16I Discontinued SLC 500 sixteen-channel analog current input module | Request Quote

Allen-Bradley 1746-NI16I — Discontinued SLC 500 sixteen-channel analog current input module

This original Allen-Bradley component is designated discontinued by Rockwell Automation. The exact 1746-NI16I catalog number identifies a legacy slc 500 sixteen-channel analog current input module used in installed industrial control systems. Plants maintaining an established machine may require a matching part to recover production without immediately redesigning the PLC architecture. Corwin Solutions offers an independent request-for-quote sourcing service for legacy MRO needs; this listing does not mean that we stock the device or that a particular condition or revision is available. Buyers should match the full nameplate and the installed hardware configuration rather than relying on the family name or appearance alone.

Technical Details and Product Specifications

• Manufacturer: Allen-Bradley / Rockwell Automation
• Full orderable catalog number: 1746-NI16I
• Product identification: SLC 500 sixteen-channel analog current input module
• Manufacturer lifecycle: Discontinued
• Discontinuation date: 2024-09-30
• Manufacturer replacement guidance: Engineering replacement
• Technical function: Sixteen analog current input channels, -20 to 20 mA
• System family: SLC 500
• Availability: RFQ only; not represented as stocked

Industrial Functions and Typical Applications

The 1746-NI16I is designed for sixteen analog current input channels, -20 to 20 ma. It can be relevant to PLC-controlled packaging machines, material-handling systems, process skids, production lines, test equipment, and other facilities that retain older Allen-Bradley hardware. Analog modules require verification of their input or output signal range and wiring; thermocouple modules require matching sensor types and configuration; communications bridges require network media, firmware, topology, and controller compatibility. This model-specific identification matters because even modules with the same number of channels may implement signals, isolation, or communications differently.

• Repair of a failed legacy automation module in an existing control panel.
• Procurement of a spare for equipment whose modernization has been deferred.
• Supporting planned maintenance where an exact series or revision is required.
• Restoration of original control-system communication, I/O, or measurement functions.

Confirmed Discontinuation and Legacy Sourcing

Rockwell Automation lists 1746-NI16I as discontinued effective 2024-09-30. Its published replacement classification is Engineering replacement. An engineering or functional replacement is not automatically a direct plug-in substitute: it may require programming updates, module profile changes, rewiring, additional communication components, field calibration, panel modifications, or validation of firmware and controller support. Some sites prefer obtaining original equipment as an interim repair while they prepare a longer-term migration. Independent sourcing can involve surplus new-old-stock, refurbished units, or tested-used equipment. These sources must be evaluated for provenance, inspection and test records, authenticity, revision level, warranty, returns, and total delivered price.

Replacement and Compatibility Notes

Check the full 1746-NI16I catalog marking and all suffixes, series, firmware, keying and power requirements before purchase. Confirm chassis and slot requirements, supported controller generation, module configuration, terminal blocks, wire labeling, signal scaling and any existing project backups. For communications modules, verify the physical network and software connection limits; for I/O modules, confirm channel type, input/output limits and external-device safety. Qualified plant technicians or controls engineers should determine whether an original part or migration component is suitable and should commission the system following site procedures. A manufacturer-suggested replacement is a starting point for an engineering review, not a promise of interchangeability.

Request a Quote — Corwin Solutions

Submit your required 1746-NI16I quantity, shipping destination, urgency, acceptable condition, and any mandatory hardware series, revision or firmware. A nameplate photograph and an existing bill of materials help prevent incorrect orders. We can investigate specialist surplus and legacy-equipment suppliers and quote when actual inventory, price, lead time, inspection condition, warranty and shipping terms have been checked. No delivery, stock level, margin, warranty or factory affiliation is guaranteed by this listing. Contact Corwin Solutions for an individual availability and sourcing review.