OVERVIEW

Official designation: Allen-Bradley 1746-IA4 (SLC 500, Digital AC Input Module)

The 1746-IA4 is a digital input module providing 4 channels of reliable signal acquisition for SLC 500 systems. It is designed to interface with 85–132 VAC field devices.

KEY SPECS SUMMARY

Power: 35 mA at 5 VDC

Interfaces / Ports: 4 input channels

Indicators: 4 input status LEDs

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 500 Chassis

Limit: Input voltage 85–132 VAC

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum current drawn by the 1746-IA4 from the SLC 500 backplane power supply?

A: The module draws a maximum of 35 mA at 5 VDC backplane current.

Wiring & Installation:

Q: How many individual digital input channels does the 1746-IA4 module provide for field devices?

A: The module provides a total of four individual input channels.

Troubleshooting & Compatibility:

Q: What is the normal operating voltage range for the AC signals connected to the 1746-IA4 inputs?

A: The module is designed to accept signals within the 85 to 132 VAC range.

Replacement & Upgrades:

Q: Where are the status indicators located on the 1746-IA4, and what do they show?

A: Four status LEDs on the front indicate the real-time ON/OFF status of each input channel.