OVERVIEW

Official designation: Allen-Bradley 1492-IFM20F (Bulletin 1492, Digital Interface Module)

Role/Application: A 20-point digital interface module (IFM) designed for field-side wiring convenience, connecting PLC I/O modules via a 20-pin cable connector to fixed terminal blocks for digital signal transmission.

KEY SPECS SUMMARY

Power: 0 to 264 V AC/DC

Interfaces / Ports: 20-pin cable connector; Fixed screw terminals

Indicators: None (Standard Feed-Through version)

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: DIN Rail mount; Compatible with Bulletin 1756/1769/1746 I/O

Limit: 2 Ampere max per circuit; 12 Ampere max per module

Lifecycle: Active product line

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum current capacity for a single I/O point on the 1492-IFM20F module?

A: The maximum rated current per individual circuit is 2 Amperes.

Wiring & Installation:

Q: What is the acceptable wire gauge range for the field-side screw terminals on this IFM?

A: The terminals accept copper wire gauges ranging from 22 AWG to 12 AWG.

Troubleshooting & Compatibility:

Q: How can field wiring issues be diagnosed since the standard 1492-IFM20F has no LED indicators?

A: Diagnostics rely on the host I/O module status indicators or external testing, as the standard version lacks I/O LEDs.

Replacement & Upgrades:

Q: Are there versions of the 1492-IFM20F module available with extra features like fusing or indicators?

A: Yes, fusible or extra terminal versions are available under different catalog numbers like 1492-IFM20F-F24-2.