OVERVIEW

Official designation: Allen-Bradley 1746-IA8 (SLC 500, Digital AC Input Module)

The 1746-IA8 is an 8-point digital input module for the SLC 500 system, rated for 100 to 120V AC signal acquisition. It is designed for standard industrial environments and approved for use in certain Hazardous Locations.

KEY SPECS SUMMARY

Power: 5V DC backplane, 135 mA

Interfaces / Ports: 36-pin terminal block

Indicators: 8 status LEDs (input status)

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 500 I/O chassis

Limit: 8 inputs, 2.4 W heat dissipation

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum heat dissipation rating for the 1746-IA8 module?

A: The module has a maximum heat dissipation of 2.4 W, which impacts enclosure cooling requirements.

Wiring & Installation:

Q: What input voltage range does the 1746-IA8 accept for its digital signal acquisition?

A: The module is rated to accept standard industrial signals in the 100 to 120V AC range.

Troubleshooting & Compatibility:

Q: What is the primary purpose of the eight status LEDs located on the front of the 1746-IA8?

A: The LEDs provide a visual confirmation of the real-time ON/OFF status of each of the 8 input channels.

Replacement & Upgrades:

Q: What critical approval must a replacement module possess to be used in the same Hazardous Location as the 1746-IA8?

A: The replacement module must carry the appropriate Hazardous Location approvals, such as Class I Division 2.