Mitsubishi Electric FX84A-5 Circuit Board BN624A353H02

Mitsubishi Electric FX84A-5 Circuit Board (BN624A353H02) — main control and signal processing module for Mitsubishi CNC/EDM systems. Model: FX84A-5 Board Number: BN624A353H02 Manufacturer: Mitsubishi Electric Corporation Country of Manufacture: Japan Type: CNC/EDM logic and control PCB assembly Function: Central signal processor and interface controller used in FX series (wire EDM and CNC control systems) Architecture: Multilayer logic board with discrete ICs and programmable logic arrays Main Components: • Multiple TTL/CMOS logic ICs (74LS, 4000-series) • High-density EPROMs and SRAMs for firmware storage • Optocouplers and relays for signal isolation • Ceramic precision capacitors and logic drivers • Dual edge connectors for backplane interfacing Voltage Supply: +5 VDC logic rail (regulated from CNC power backplane) Current Draw: ≈ 1.2–1.8 A typical Signal Interface: 64-pin and 96-pin edge connectors (for inter-module data, power, and I/O buses) Form Factor: Standard Mitsubishi FX module PCB, approx. 330 mm × 220 mm Mounting: Card-slot insertion into FX control rack (secured by front retainers) Cooling: Convection or forced-air through chassis airflow Operating Temperature: 0 °C to +50 °C Storage Temperature: −20 °C to +80 °C Typical System Compatibility: Mitsubishi FX10, FX20, FX50 wire EDM systems and select M-series CNC controllers Primary Role: • Manages discharge timing, pulse control, and axis synchronization • Interfaces with I/O, servo, and power regulation modules • Executes firmware-level logic for EDM machining parameters Maintenance: Field-replaceable board; firmware and parameters retained via onboard memory Identification: Yellow label with Mitsubishi BN624A353H02 marking and revision code Please review pictures carefully and let us know if you have any questions!