The IDEC FA2J series (often referred to as the FA-2 Junior) is a legacy flat-pack modular programmable logic controller known for its reliability in industrial and marine automation. Although the series has been discontinued by the manufacturer, it remains widely used in existing control panels due to its high-density design and flexible expansion capabilities.
The FA2J is often compared to the Square-D Symax Model 50, which was a re-badged version of the IDEC FA1J. Users often refer to Symax 50 documentation for overlapping basic instruction sets. Installation & Maintenance idec plc fa2j manual
1K or 4K CMOS-RAM (requires battery) or 4K EEPROM. Programming Logic: Supports both Boolean and ladder logic. The IDEC FA2J series (often referred to as