NEC FC-9821X MODEL2 Factory Computer
The NEC FC-9821X MODEL2 is a high-performance factory computer from the PC-9821 series, designed for demanding industrial automation applications. It is optimized for use in semiconductor manufacturing, electronics assembly, and large-scale production lines where real-time data processing and control are critical. The system is based on a 32-bit CPU (i486-compatible) and is equipped with a large-capacity SCSI disk (typically 1.6 GB) for handling substantial amounts of real-time data.
Technical Specifications
Product Type: Factory computer / industrial PC
Series: PC-9821 series
CPU: 32-bit i486-compatible
Memory: 4-8 MB RAM (expandable)
Storage: 1.6 GB SCSI disk
Operating System: Windows 3.1 / Windows 95 / OS/2
Expansion Buses: PIO bus, MAP bus
Interfaces: SCSI, RS-232, parallel port
Protection Rating: IP40 / IP55 (with dust filter)
Operating Temperature: -10°C to +55°C
Mounting: 19-inch rack
Factory-Optimized Design
The FC-9821X MODEL2 is built for factory-floor reliability, featuring a robust chassis designed for 19-inch rack mounting. The system incorporates advanced RAS (Reliability, Availability, Serviceability) features, including self-diagnostics and monitoring of temperature and fan status. With an IP40 rating (or IP55 with an optional dust filter), the computer is protected against dust ingress, making it suitable for industrial environments with airborne particles. It operates reliably in temperatures ranging from -10°C to +55°C.
High-Speed I/O and Expansion
The computer is equipped with PIO and MAP expansion buses, which are specialized industrial interfaces designed for high-speed data exchange with sensors, actuators, and PLCs. These buses enable the system to connect to a wide range of field devices, making it suitable for real-time monitoring and control applications. The large SCSI disk capacity (1.6 GB) provides ample storage for process data, production logs, and system software. Additional interfaces include RS-232 serial ports and a parallel port for connectivity to legacy peripherals.
Application Domains
The NEC FC-9821X MODEL2 is used in semiconductor manufacturing for real-time process control, electronics assembly lines for monitoring and quality assurance, large-scale production systems (MES), real-time data backup and database servers, and factory automation systems requiring high-speed I/O. It is primarily used in legacy industrial installations where the PC-9821 architecture is still supported.
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