Overview
The Allen-Bradley 1492-IFM20D120 is a digital interface module designed for rapid, reliable PLC I/O field wiring. As part of Allen-Bradley’s Bulletin 1492 wiring system, this 20-point module eliminates traditional terminal block complexity by connecting to both ControlLogix and CompactLogix I/O through pre-tested, pre-wired cables. Mounting on standard DIN #3 rail, the 1492-IFM20D120 Series A reduces panel design time, wiring labor, and troubleshooting costs while maintaining secure connections.
Key Features
- 20-point digital configuration with 22 screw terminals for field-side connections
- 120V AC/DC LED indicators for immediate status visibility on each I/O point
- Pre-tested cable compatibility with Bulletin 1746, 1756, 1769, and 1771 I/O modules
- DIN rail mounting on standard DIN #3 rail for compact panel density
- Reduced wiring time and errors through pre-wired cable system vs. point-to-point methods
- Diagnostic aids including fuse options and blown fuse indication for faster maintenance
Technical Specifications
The module operates at 120V AC/DC with a 20-pin male connector on the I/O module side and 22 field-side screw terminals. It provides two terminals per I/O connection for reliable field wiring. Series A designation confirms compatibility with current Rockwell Automation standards. DIN rail mounting and compact form factor enable high-density panel layouts.
Typical Applications
- Food and beverage processing and packaging lines
- Automotive assembly and material handling systems
- HVAC and facility automation control panels
- Machine tool monitoring and discrete process automation
- Industrial cabinet and control panel integration
Compatibility & Replacements
Compatible With
- Allen-Bradley ControlLogix I/O modules (Bulletin 1756)
- CompactLogix I/O modules (Bulletin 1769)
- PLC-5 style modules (Bulletin 1771)
- Rockwell Automation Bulletin 1746 I/O modules
- 1492 pre-wired cable system (various connector types)
Replaces / Drop-In Replacement For
- 1492-IFM20D120-2 (standard with extra output terminals)
- 1492-IFM20D120N (neutral configuration variants)
Works With
- Studio 5000 Logix Designer software
- RSLogix 5000 / CompactLogix programming
- Allen-Bradley DIN rail mounting systems
- Bulletin 1492 pre-wired cable connectors
