Product Details

The XYCOM 1840-3 is a discontinued VME bus processor board designed as the main control core for legacy XYCOM industrial automation and process control systems. This CPU board executes control logic, runs application programs, communicates with VME I/O modules, analog boards and communication cards on the backplane, and handles real-time data collection, calculation and command scheduling for the whole control rack. It is the central processing unit that coordinates all peripheral modules in the VME chassis, supporting reliable data exchange and interrupt response for multi-channel field signals. It adopts industrial-grade processor and onboard memory, optimized for stable operation in factory environments with vibration, temperature fluctuation and electrical noise. The board supports standard VME bus protocol, and users can configure base address, interrupt level and boot parameters via onboard jumpers to match the system layout. Front panel LED indicators show power status, bus activity, run status and fault alarm, which helps technicians quickly locate communication failure, bus conflict and program abnormal issues during commissioning and maintenance. It is compatible with XYCOM series VME chassis and expansion modules, and can build distributed control systems together with analog I/O, digital I/O and motion control boards. This legacy processor board is mainly supplied as spare replacement parts for existing automation systems. Users need to confirm firmware version, memory configuration and VME bus resource allocation before installation. A conformal coated version is optional for high humidity, dusty industrial sites. This model is widely used in chemical process control, oil & gas skid control, industrial test benches and old production line renovation projects.

This processor board adopts standard 6U Eurocard form factor. It obtains power supply from VME backplane bus, equipped with onboard memory and bus interface circuit. LED indicators display power status, bus activity and fault status for convenient on-site inspection. The operating temperature range is 0°C to 50°C, storage temperature ranges from -40°C to 85°C, relative humidity 5% to 95% non-condensing. It complies with industrial shock, vibration and EMC standards and has CE certifications. It supports firmware and configuration parameter backup for fast recovery after hardware replacement.

This XYCOM 1840-3 processor board is widely applied in VME control cabinets, legacy DCS system main control stations and industrial test system retrofit projects. It provides stable central computing and bus management capability for the entire VME rack. As a reliable discontinued CPU spare part, the XYCOM 1840-3 retains original bus configuration and program running logic, and effectively reduces the renovation cost of legacy industrial control system maintenance.