How quickly can you replace a failed AC input module before production stops? For thousands of facilities running Allen-Bradley SLC 500 systems, the 1746-IA16 is the answer. This genuine 16-channel digital AC input module keeps discrete signals flowing into the controller, and when one fails, every scan cycle matters.
The Allen-Bradley 1746-IA16 is a Digital AC Input Module from the SLC 500 series, manufactured by Rockwell Automation. It accepts a voltage range of 85-132 Volts AC and occupies a single slot in any SLC 500 chassis. With 16 inputs, it delivers the real-time field interface a PLC needs to execute its program correctly. No input signals means no reference for logic execution — and that means downtime.
The 1746-IA16 suits general-purpose input applications across manufacturing, packaging, and material handling. Pushbuttons, limit switches, and selector switches all feed cleanly into its 16 channels. Because the module installs in fixed or modular hardware, locally or in an expansion rack, you can slot it wherever capacity allows. Each unit ships as a genuine part, fast shipping available for urgent breakdowns.
The module mounts directly into any SLC 500 chassis with an open slot — there is no installation limit as long as space exists. Its removable terminal block lets you swap the module without reconnecting every field termination, cutting changeover time significantly. Terminals 18 and 19 serve as internally connected commons. Verify that any AC input device wired to this module is compatible with the SLC 500 input circuit inrush current. Note that this module does not include internal protection circuitry, so plan external protection accordingly.
Inspect terminal connections periodically and confirm the chassis environment stays within acceptable limits. Keep spare modules on hand — a single-slot input module is one of the most common failure points in any SLC 500 rack, and an immediate replacement protects your throughput. The 1746-IA16 is in stock and ready to ship from SpareTech Plc.
Before ordering, confirm your field devices operate within the 85-132 VAC range. For 200/240VAC operation, the counterpart part number is 1746-IM16. Confirm your chassis has an available slot and that your I/O connection hardware matches the 1746-HT and 1746-HCA options. Our technical team can verify compatibility before you commit.
Contact SpareTech Plc today for pricing and availability.
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