Use minimum 14 AWG (2.0 mm²) copper wire for power supply lines to minimize voltage drops. Input and Output Terminal Connections
Moves a literal constant or the value of one data register into another register.
The is a legacy programmable logic controller (PLC) that has been discontinued by the manufacturer. Finding a full digital "long paper" or manual can be difficult as IDEC originally only produced them in paper form.
The IDEC FA2J series is a legacy programmable logic controller (PLC) that remains a reliable workhorse in many industrial automation setups. Finding information in the original manual can be challenging due to its age. This comprehensive guide synthesizes the critical technical specifications, wiring configurations, programming steps, and troubleshooting procedures found in the official IDEC PLC FA2J manual. 1. System Overview and Specifications idec plc fa2j manual
Modern Windows-based programming software for all IDEC PLCs, including the legacy FA2J.
The (also known as the FA-2 Junior ) is a classic, highly reliable flat-pack modular Programmable Logic Controller (PLC) designed by IDEC Izumi Corporation. Known for its space-saving form factor and rapid execution times, it remains widely used in legacy industrial systems, small machine control, and shallow-panel automation setups.
If you are in the process of repairing or upgrading your system, it's worth noting that the IDEC FA2J is quite different from newer units like the FT2J touchscreen PLC shown in this tutorial, which feature built-in HMI and different programming interfaces. Use minimum 14 AWG (2
Which or software version you are currently using. The specific error code or symptom you are trying to solve.
Indicates the CPU is executing the loaded program. If flashing or off while power is present, the PLC may be in STOP mode or a program error exists. ERROR (Red): Indicates a critical hardware or syntax error. Steady Red: Internal CPU failure or corrupted memory.
The IDEC PFA-1LH1 or HG1A legacy handheld units plug directly into the CPU's peripheral port. Programming is entered using direct mnemonic codes. Finding a full digital "long paper" or manual
Programming for the FA2J is typically done via or boolean instructions .
Up to 128 inputs and 128 outputs (256 total points).
Install an RC snubber circuit across the load or output terminal to prevent premature contact wear on relay modules.