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.

Includes 15 basic and 57 advanced instructions.

Available in 100–240V AC and 24V DC CPU models. Hardware Components & Modules

Features 80 timers (10ms), 45 adding counters, and reversible counters.

Critical data including internal relays, shift registers, and counters can be maintained during power loss via internal battery backup. Manual Downloads & Resources

1K or 4K CMOS-RAM (requires battery) or 4K EEPROM. Programming Logic: Supports both Boolean and ladder logic.

The PF3S-HL161E is a dedicated handheld loader with a built-in PROM burner for field modifications.

This guide provides a comprehensive overview of the technical specifications, programming requirements, and hardware configuration typically found in the . Technical Specifications & Key Features

Supports up to 128 inputs and 128 outputs for a total of 256 I/O points.