OVERVIEW

Official designation: Allen-Bradley 1746-IB8 (SLC 500, Digital Input Module)

The 1746-IB8 is an SLC 500 module providing eight 24V DC sinking digital input channels for monitoring field devices. It features low power dissipation and is compatible with systems requiring hazardous location approvals.

KEY SPECS SUMMARY

Power: 5V DC @ 90 mA

Interfaces / Ports: Removable terminal block

Indicators: Eight green status LEDs (one per channel)

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 500, 1746 I/O chassis

Limit: 8 inputs, 24V DC nominal

Lifecycle: Active

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the nominal input current drawn by each channel on the 1746-IB8 module?

A: Each sinking input channel draws a nominal current of 8 mA at 24V DC.

Wiring & Installation:

Q: Does the 1746-IB8 module support sourcing input devices or only sinking devices?

A: The 1746-IB8 module is designed specifically for connection to sinking input devices.

Troubleshooting & Compatibility:

Q: What does the illumination of a green status LED on the 1746-IB8 module indicate?

A: The green LED indicates that the corresponding 24V DC input channel is ON or energized.

Replacement & Upgrades:

Q: Is the 1746-IB8 module suitable for use in installations classified as hazardous locations?

A: Yes, this module is approved for use in certain hazardous locations.