Product Details

The XYCOM XVME-212, PN 74212-001, is a discontinued 6U VMEbus opto-isolated digital input module, designed for XYCOM legacy VME control racks and industrial discrete automation systems. It provides 32 opto-coupled digital input channels, offered in two versions for different field voltage levels. The XVME-212/1 accepts 10 to 50VDC field signals, while XVME-212/2 supports low-level 2 to 6.5VDC signals, which can connect with limit switches, proximity sensors, push buttons and other field discrete devices to collect on-off status signals for the VME master CPU. The built-in optical isolation separates the field side and VME bus circuit, effectively eliminating ground loop noise and blocking high voltage transient surges, which greatly improves anti-interference performance in harsh factory environments with inverters and servo drives. It supports hardware interrupt triggering when input status changes, so the host system can capture critical field events in time. The module operates as a VME slave device, and users can configure base address, interrupt vector and interrupt enable mode through on-board DIP switches and jumpers to avoid address and interrupt conflicts with other VME modules installed in the same chassis. The input signal sampling frequency can reach up to 3.4kHz, supporting fast state capture for machine safety interlock and sequence control. The front panel is equipped with independent LED status indicators for each channel, together with power and bus activity LEDs, helping maintenance technicians quickly identify wiring faults, signal loss and bus communication anomalies during commissioning and routine inspection. The PCB adopts industrial-grade electronic components and EMC suppression design, which can withstand vibration, dust and temperature fluctuation in machining workshops, chemical plants and production line control stations. This legacy isolated digital input module is mainly supplied as spare replacement parts for existing XYCOM VME automation systems. Users need to confirm VME chassis compatibility, bus address allocation and field signal voltage range before installation. A conformal coated version is optional for high humidity, dusty and corrosive industrial sites. This model is widely used in CNC safety interlock systems, material conveying equipment, packaging machinery and old VME discrete control system retrofit projects.

This opto isolated digital input module adopts standard 6U VME rack mount structure. It draws power from the VME backplane. LED indicators display power status, bus activity and individual channel input 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 interrupt and address configuration backup for fast recovery after hardware replacement.

This XYCOM XVME-212 digital input module is widely applied in legacy VME control racks and industrial automation upgrade projects. It provides safe and reliable isolated discrete signal acquisition for the VME master control system. As a reliable discontinued spare part, the XYCOM XVME-212 retains original VME bus timing and signal compatibility, and effectively reduces the renovation cost of legacy industrial control system maintenance.