Overview
The Allen-Bradley 1492-IFM20F-F24-2 is a fusible digital interface module designed as part of the Bulletin 1492 I/O wiring system. This 20-point interface connects discrete analog and digital field devices to CompactLogix, ControlLogix, and other Bulletin 1746/1756/1769/1794 based I/O modules. The module features 5×20mm fuse clips rated for 24V AC/DC operation, blown fuse indicators for rapid troubleshooting, and extra terminals to reduce overall panel footprint.
Key Features
- 20-point fusible interface with 5×20mm fuse clips rated 2A per circuit, 12A maximum module amperage
- 24V AC/DC blown fuse indicator LEDs for immediate fault detection
- Extra terminals for output connections to simplify wiring
- Compatible with Bulletin 1746, 1756, 1769, 1794, and 1771 I/O modules
- Reduces in-panel wiring by up to 75% vs. traditional point-to-point connections
- Fixed terminal block construction for permanent field-side installations
Technical Specifications
- Voltage Rating: 24V AC/DC (blown fuse indicator)
- Point Count: 20 discrete points
- Fuse Type: 5×20mm clips
- Current per Circuit: 2A maximum
- Maximum Module Amperage: 12A
- Terminal Configuration: Two terminals per I/O connection (field side)
- Interface Type: Fusible digital
- Mounting: DIN rail or panel mount via fixed terminals
- Operating Temperature: 0–60°C
- Certifications: UL, CSA, FM Class 1 Division 2 Groups A, B, C, D (T6)
Typical Applications
- Industrial control panels with discrete digital I/O expansion
- OEM machinery requiring distributed field device termination
- Food, beverage, packaging, and automotive processing systems
- Building automation and HVAC control platforms
- Material handling and conveyor systems using Rockwell controllers
Compatibility & Replacements
The 1492-IFM20F-F24-2 integrates with Bulletin 1492 pre-wired cables and connectors, requiring selection of a compatible I/O module (1746, 1756, 1769, 1794, or 1771 series). Direct replacements include the 1492-IFM20F-F24A-2 variant. No Studio 5000 or RSLogix 5000 configuration is required; the module is a passive wiring interface. Pair with any 24V source and corresponding fuses; standard 2A slow-blow fuses are typical.
