Allen-Bradley 1746-NIO4I SLC 500 Analog Combination I/O Module
SLC 500 Analog I/O Module
2 Differential Analog Input Channels
1746-NIO4I manual
Place of Origin:
USA
Brand Name:
Allenbradley
SLC 500 Analog I/O Module
,2 Differential Analog Input Channels
,1746-NIO4I manual
Allen-Bradley · SLC 500 Series
1746-NIO4I
Analog Combination I/O Module
Key Product Information
Discontinued by Rockwell Automation · April 29, 2021
REQUEST A QUOTEModule Overview
PRODUCT PROFILEThe Allen-Bradley 1746-NIO4I combines analog signal acquisition and current output functions in one module. It is designed for control applications that need to monitor field measurements and issue analog current commands from the same I/O assembly.
Technical Specifications
OPEN-BOOK TECHNICAL LAYOUTModule & Input Data
Current Output Data
Verify the module series, channel selection, wiring arrangement and application requirements against the installed system documentation before commissioning.
Application & Fault Scenarios
SYSTEM CONTEXTApplication Environment
Used in SLC 500 control systems where analog field signals must be monitored and current output commands delivered to connected process equipment. Typical tasks include acquiring process measurements and sending analog control references.
Maintenance & Downtime Risk
Maintenance teams may search for this module when analog readings become unstable, input channels stop updating, current outputs fail to respond, or the installed unit is damaged. Loss of these signals can interrupt process monitoring or control and contribute to equipment downtime.
Installation & Verification
FIELD CONSIDERATIONSBefore installation, confirm the catalog number, module revision, chassis arrangement and channel configuration. Check the voltage/current selection switches and verify terminal assignments against the applicable Rockwell Automation installation instructions.
Use suitable shielded wiring and grounding practices for analog signals. Before removing or installing the module or terminal block, follow the system's approved isolation and electrical safety procedures.
For replacement, compare the existing wiring, input signal type, output load and controller configuration rather than relying on the catalog number alone.
Frequently Asked Questions
1746-NIO4I FAQYes. Each input channel can be configured for voltage or current using the module's DIP switches. Check the selected signal type and wiring before operation.
The module provides two analog current outputs with a normal operating range of 0 to +20 mA.
No. Rockwell Automation lists this catalog number as discontinued effective April 29, 2021. Availability should be confirmed before placing an order.
Confirm the full catalog number, module revision, installed chassis, field signal types, wiring and the existing control-system configuration.
Related Models
ADDITIONAL PART REFERENCESAMIKON Industrial Supply
INDUSTRIAL PARTS SOURCING & SUPPORTIndustrial Automation Parts, Ready When Needed.
AMIKON supports industrial parts sourcing for automation maintenance, equipment repair and spare-parts procurement, with order communication focused on the details that matter to your application.
- Part-number and order-detail confirmation
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- Protective packaging for shipment
- DOA and return requests reviewed under agreed order terms
- 12-month warranty, subject to quotation and warranty terms
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