Overview
The Allen-Bradley 1492-IFM20F is a 20-point feed-through digital interface module designed for the 1492 Wiring System. This module simplifies and organizes field-side I/O wiring to PLC digital input and output cards, providing a clean, pre-wired alternative to point-to-point terminal block wiring. With screw-clamp terminal connections and clear adhesive label identification, the 1492-IFM20F reduces panel density requirements and accelerates installation and troubleshooting cycles.
Key Features
- 20-Point Capacity: Accommodates 20 digital input/output field connections with one terminal per point.
- Feed-Through Design: Allows wiring to pass through the module, enabling flexible installation in control panels.
- Pre-Wired Cable System: Pairs with pre-tested 1492 wiring cables to eliminate individual wire cutting, stripping, and routing—reducing wiring errors and installation time by up to 50% compared to traditional methods.
- Fixed Terminal Blocks: Screw-clamp connections with clearly marked terminal positions and included adhesive label cards for rapid identification during installation and maintenance.
- DIN Rail Mounting: Compact profile mounts directly to standard 35 mm DIN rails, reducing control cabinet footprint.
- CompactLogix Compatible: Works seamlessly with CompactLogix and ControlLogix I/O modules via 8 to 16-point cable connectors.
Technical Specifications
- Catalog Number: 1492-IFM20F
- Series: 1492 IFM (Interface Module)
- I/O Points: 20 (digital)
- Module Type: Feed-through digital interface module
- Terminal Type: Fixed screw-clamp terminals
- Wire Range: 24–12 AWG
- Maximum Voltage: 264 V AC/DC (peak recurring voltage 600 V)
- Maximum Current: 12 Amps per module; 2 Amps per circuit (individual channel)
- Cable Connector: 8 to 16-point pin type for PLC I/O modules
- Mounting: 35 mm DIN rail
- Operating Temperature: 0 to 55°C (standard industrial environment)
- Shipping Weight: 0.30 lbs (0.14 kg)
- Insulation Material: Flame-retardant plastic construction
- Lifecycle Status: Active
Typical Applications
- PLC Control Panels: Digital field I/O interfacing in CompactLogix and ControlLogix automation systems.
- Industrial Machine Control: Sensor, solenoid, motor starter, and signal lamp wiring consolidation.
- Panel Integration: Reducing wiring density and labor cost in custom electrical enclosures.
- System Integration Projects: Drop-in replacement for existing 1492 interface modules during upgrades or retrofits.
- OEM Equipment: Pre-assembled wiring harness integration for original equipment manufacturers requiring quick assembly and validation.
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix controllers (1764 series)
- Allen-Bradley ControlLogix controllers (1756 series)
- 1492 Wiring System (Bulletin 1492 pre-wired cables)
- Digital I/O modules: 1756-IA16, 1756-IA16K, 1764 discrete input/output cards
- Rockwell Automation Studio 5000 and RSLogix platforms
- Standard 35 mm DIN rail (IEC 60715)
Replaces / Drop-In Replacement For
- 1492-IFM20FN (narrow profile variant)
- 1492-RIFM20F (removable terminal block version)
- Legacy 1492-series 20-point interface modules in existing panels
Works With
- Software: Studio 5000, RSLogix 5000, CompactLogix programming environments
- Cable System: 1492-CABLE*** configurations (pre-wired harnesses)
- Terminal Blocks: 1492-RTB20N (screw-style plugs) and 1492-RTB20P (push-in-style plugs) for removable terminal versions
- Mounting Accessories: DIN rail clamps and standard electrical panel hardware
