OVERVIEW

Official designation: Allen-Bradley 1746-IN16 (SLC 500, Digital Input Module)

The 1746-IN16 is a high-density, 16-channel digital input module for the SLC 500 system. It supports reliable acquisition of 24V AC/DC signals, maximizing I/O density in a single chassis slot.

KEY SPECS SUMMARY

Power: 5V DC backplane, 130 mA

Interfaces / Ports: 36-pin terminal block

Indicators: 16 input status LEDs

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 500 I/O chassis

Limit: 16 channels, 24V AC/DC input

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the typical on-state voltage range for a 24V AC/DC input signal connected to the 1746-IN16 module?

A: The module recognizes an on-state voltage between 18V and 30V AC/DC.

Wiring & Installation:

Q: What precaution must be taken when wiring mixed AC and DC signals to the 1746-IN16 input module?

A: Separate terminal blocks or field wiring best practices must be employed to prevent cross-interference.

Troubleshooting & Compatibility:

Q: How can the operational status of an individual input channel on the 1746-IN16 be quickly confirmed?

A: The status of each of the 16 channels is visually indicated by its corresponding LED on the module faceplate.

Replacement & Upgrades:

Q: Which current Allen-Bradley platform is generally recommended for replacing SLC 500 systems utilizing modules like the 1746-IN16?

A: Migration to the CompactLogix or ControlLogix platform is the recommended path for SLC 500 upgrades.