Product Details

The XYCOM XVME-293 is a discontinued single-height 3U VMEbus quadrature counter module, sharing the same core counter architecture as the XVME-203 but routed through the VME P2 backplane 96-pin connector instead of front-panel ribbon connector, designed for XYCOM legacy VME control racks and embedded motion measurement systems. This board adopts dual AM9513A timer/counter chips and one AM9519A interrupt controller, providing 10 independent 16-bit counting channels and supporting up to 5 incremental encoder inputs with quadrature decoding function. It supports single pulse, dual pulse and AB quadrature counting modes, with maximum input frequency of 5MHz and 20MHz equivalent sampling rate under 4x quadrature multiplication, which can capture precise position, speed and displacement signals from rotary encoders for closed-loop motion control. It also supplies programmable trigger output channels for synchronized motion events and hardware interrupt generation to notify the VME master CPU when preset count values are reached.

Different from the XVME-203, all I/O signals of XVME-293 are wired via the 96-pin 3-row P2 backplane connector, which saves front panel space and suits compact chassis layout where front I/O access is not required. The module works as a standard VME slave, supporting A16/D16 bus cycles. Users can configure base address, interrupt vector, counting mode and output logic through on-board jumpers and DIP switches to avoid resource conflicts with other VME modules in the same rack. On-board signal conditioning, anti-aliasing filter and transient suppression circuits reduce electromagnetic noise from inverters and servo drives, ensuring stable pulse sampling in noisy industrial environments. The front panel is equipped with LED indicators for power status and bus activity, helping maintenance technicians quickly diagnose power failure, bus handshake error and configuration faults during commissioning and routine inspection. The PCB uses industrial-grade components and reliable EMC protection design, capable of resisting vibration, dust and temperature fluctuation in machining workshops and automated test benches.

This legacy backplane-connected quadrature counter module is mainly supplied as spare replacement parts for existing XYCOM VME automation systems. Users need to confirm VME chassis P2 backplane compatibility, bus address allocation and encoder signal wiring definition before installation. A conformal coated version is optional for high humidity, dusty industrial sites. This model is widely used in CNC axis positioning, automated test equipment, packaging machine motion control and old VME-based motion measurement retrofit projects.

This quadrature counter module adopts standard 3U single-height VME rack mount structure. It draws power from the VME backplane. LED indicators display power status and bus activity 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 counting mode and interrupt configuration backup for fast recovery after hardware replacement.

This XYCOM XVME-293 quadrature counter module is widely applied in legacy VME control racks and industrial motion control upgrade projects. It delivers high-precision encoder pulse acquisition and position measurement via P2 backplane routing for the VME master control system. As a reliable discontinued spare part, the XYCOM XVME-293 retains original VME bus timing and signal compatibility, and effectively reduces the renovation cost of legacy industrial control system maintenance.