XYCOM XVME-675 – VMEbus Single‑Board Computer for Industrial Control Upgrades

The XYCOM XVME-675 is a 6U VMEbus single-board computer designed for control, data acquisition, and supervisory tasks in legacy and mid-life industrial systems. From my experience, teams reach for the XVME-675 when they need a dependable VME CPU to keep a production line running, or to standardize on a known-good controller while avoiding a costly rack redesign. You might notice that it fits straight into standard 6U VME backplanes and typically plays well with existing I/O cards, which makes change management a lot easier on validated systems.

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Key Features

• 6U VMEbus SBC – Installs into standard 6U VME card slots, ideal for drop‑in controller replacement without backplane changes.
• Backplane‑powered – Draws regulated +5 VDC and ±12 VDC through the VME J1/J2 connectors; no separate field PSU wiring.
• VME master/slave support – Works as a system controller or peer on the VME backplane in many setups.
• Industrial operating profile – Typically specified for 0 to 55°C ambient in a properly ventilated enclosure; good fit for factory floors.
• Field‑proven longevity – In many cases used to extend the life of existing VME racks with minimal software or I/O changes.
• Serviceable design – Socketed/replaceable components on many builds simplify maintenance; easy to pull and reseat during troubleshooting.

Technical Specifications

Note: The XVME‑675 family had variant configurations. The entries below reflect typical, broadly compatible characteristics for this model without over‑specifying options that vary by build.

Related or Supporting Products

• Motorola/Emerson MVME-167 / MVME-177 – Popular VME SBCs; different CPU architecture, but often considered when modernizing mixed racks.
• GE Fanuc VMIVME-77xx series – Later‑generation VME SBC family; higher performance, may require OS and driver migration.
• VME P2 transition modules – Useful when the XVME-675 build routes serial or other I/O to the P2 connector; simplifies field wiring.
• 6U VME chassis and power supplies – Ensure sufficient +5 V and airflow headroom if upgrading or adding cards.

One thing I appreciate is how the XVME‑675 typically coexists with legacy I/O boards—customers tell us it’s a steady path to extend system life while keeping training and spares simple.

Installation & Maintenance

• Cabinet & chassis – Use a compliant 6U VME enclosure with intact card guides and properly bonded ground. Maintain at least 25 mm clearance in front and behind for airflow.
• Ventilation – Provide forced air across the card stack. Aim for clean, filtered airflow; target inlet temps that keep the card under 55°C ambient.
• Power & wiring – Verify backplane rails (+5 V, ±12 V) under load. If the build uses P2 for I/O, use the appropriate transition module to avoid cable strain.
• ESD & handling – Observe ESD precautions. Insert/removal with power off; use the front‑panel levers to fully seat the connectors.
• Routine care – Quarterly dust cleaning with dry air; check connector pins for oxidation. Replace the RTC/CMOS battery on interval if fitted. Keep a known‑good image of the boot media (if applicable).
• Firmware & OS – Where applicable, keep boot firmware and OS images aligned with installed I/O drivers. I typically recommend a “golden” SD/flash or disk kept offline.

Quality & Certifications

• Certifications – CE and UL markings were commonly available for XYCOM industrial boards; specific listings may vary by production lot.
• RoHS – Legacy units may predate RoHS; confirm compliance if your site requires lead‑free hardware.
• Quality system – Manufactured under ISO 9001 quality frameworks typical for industrial electronics of this class.
• Warranty – 365‑day coverage from us for repair/replace on hardware faults under normal use.

If you’re refreshing a VME controller in an existing rack, the XVME‑675 seems to be one of those steady, low‑drama choices—as long as the configuration matches your I/O expectations. Share your backplane and any P2 requirements, and we’ll double‑check compatibility before shipment.