Product Details

The XYCOM XVME-505/2 is a discontinued single-height 3U VMEbus analog output module, designed for XYCOM legacy VME control racks and industrial process control systems. It provides four independent analog output channels with 12-bit D/A conversion resolution, and this /2 variant is configured for 4-20mA current loop output, which is widely adopted for field transmitters, valve positioners, variable frequency drives and other process actuators. Each channel can be calibrated individually to guarantee stable current output and minimize measurement drift during long-term operation. Built-in on-board DC/DC converter provides isolated power for the analog circuitry, helping separate the VME logic side from the field current loop to reduce ground loop disturbance. This module acts as the analog control interface between the VME master CPU and field process devices, converting digital setpoint values into continuous 4-20mA current signals to regulate flow, pressure, temperature and other process variables. It follows IEEE 1014 VMEbus standard and operates as a VME slave device, supporting byte and word access cycles. Users can configure base address through on-board jumpers and DIP switches to avoid address conflicts with other VME modules installed in the same chassis. The signal conditioning circuit includes surge suppression and low-pass filtering components to suppress electromagnetic noise generated by inverters and servo motors, maintaining stable loop current in noisy factory environments. It also supports compatibility with 3B series signal conditioning accessories for further signal adaptation. The front panel is equipped with LED indicators for power status and bus activity, helping maintenance technicians quickly identify power failure, bus communication errors and configuration faults during commissioning and routine inspection. The PCB adopts industrial-grade electronic components and reliable EMC protection design, capable of resisting vibration, dust and temperature fluctuation in chemical plants, power stations, water treatment facilities and automated test benches. This legacy 4-20mA analog output 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 current loop wiring definition before installation. A conformal coated version is optional for high humidity, dusty and corrosive industrial sites. This model is widely used in closed-loop process regulation, valve control, industrial test signal simulation and old VME analog control system retrofit projects.

This analog output 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 base address and channel calibration configuration backup for fast recovery after hardware replacement.

This XYCOM XVME-505/2 analog output module is widely applied in legacy VME control racks and industrial automation upgrade projects. It provides precise 4-20mA current loop control output for the VME master control system. As a reliable discontinued spare part, the XYCOM XVME-505/2 retains original VME bus timing and analog signal compatibility, and effectively reduces the renovation cost of legacy industrial control system maintenance.