OVERVIEW

Official designation: Allen-Bradley 1746-IV8 (SLC 500, Discrete Input Module)

The 1746-IV8 is an 8-point DC sinking input module for SLC 500 modular systems, designed for accurate signal acquisition from 24 VDC sourcing field devices. It uses only one chassis slot.

KEY SPECS SUMMARY

Power: 5V DC @ 50 mA

Interfaces / Ports: 8-point terminal block

Indicators: 8 Channel Status LEDs

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 500 Modular

Limit: 8 sinking inputs

Lifecycle: Active

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the typical nominal operating voltage required for the field devices connected to the 1746-IV8?

A: The nominal input voltage for the field devices is 24 VDC.

Wiring & Installation:

Q: What type of input wiring configuration is required for the 1746-IV8 module (sinking or sourcing)?

A: The module requires sinking input wiring from sourcing field devices.

Troubleshooting & Compatibility:

Q: What indicates the input status for each channel on the 1746-IV8 module?

A: The input status is displayed by eight corresponding yellow channel status LEDs.

Replacement & Upgrades:

Q: Is this module designed for standard or high-speed input signal response times?

A: This is a standard discrete input module, not a high-speed counter module.