XYCOM XVME-677 – VMEbus Data Acquisition/Control Board for Legacy Industrial Systems

The XYCOM XVME-677 sits in that sweet spot for engineers maintaining proven VME systems who need reliable I/O and clean integration without rewriting the whole architecture. From my experience with the XVME family, the -677 is typically deployed as a high‑density data acquisition/control module within 6U VME crates—often handling analog channels, digital conditioning, or mixed-signal tasks in test stands, energy systems, and factory automation cells. You might notice that it plays nicely in mixed-vendor VME backplanes, which is why it keeps showing up in long-life projects and MRO programs.

One thing I appreciate is how stable these boards are in continuous duty. They seem to be designed for hands-off operation once commissioned—calibrate, wire it once, and let it run. In many cases, clients drop the XVME-677 into an existing slot to expand acquisition channels for condition monitoring or to replace a failing legacy card without touching the control software beyond simple address mapping.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL
• Packaging: Anti-static and foam-protected, suitable for international transit

Key Features

• 6U VMEbus form factor – Fits standard 6U, 160 mm-deep VME slots for fast replacement or expansion.
• Backplane compatibility – Typically supports VME A16/A24 addressing with D16/D32 data transfers for broad system compatibility.
• Data acquisition/control role – Commonly used for analog/digital I/O in legacy automation, test, and monitoring racks.
• Deterministic operation – VME interrupt support and predictable backplane timing suit real-time control loops.
• Serviceable in the field – Front-access connectors and clear jumpers/switches (model dependent) simplify setup and troubleshooting.
• Long-life support – Stable hardware platform helps avoid control code rewrites in validated systems.

Technical Specifications

Note: Specific channel counts and signal ranges for XVME-677 vary by option build. If you share the exact board revision, we’ll confirm the precise I/O map and connector pinout.

Related or Supporting Products

• XYCOM XVME-6xx series I/O boards – Similar analog and mixed-signal modules used alongside the XVME-677 for channel expansion.
• XYCOM XVME-5xx series digital I/O – For high-density discrete input/output when you need additional digital lines.
• VME transition modules / terminal panels – Breakout boards and cabling for clean field wiring to the XVME front connector.
• VME CPU boards (e.g., Motorola MVME family) – Typical controller hosts that the XVME-677 pairs with in legacy racks.

A maintenance client recently used the XVME-677 to replace a legacy I/O card in a turbine test bench. After address and interrupt configuration, the system came back online without requalifying the entire control stack—exactly the kind of low-risk swap teams look for in validated environments.

Installation & Maintenance

• Cabinet & airflow – Use a standard VME chassis with guided airflow. Keep intake filters clean and maintain ambient 0–55 °C.
• Wiring – Route shielded cables for analog signals; separate high-voltage lines from low-level I/O to reduce noise. Use proper strain relief on front connectors or transition modules.
• Address/interrupt setup – Set base address, interrupt level/Vector per your CPU card requirements. Document switch and jumper positions.
• ESD & handling – Wear grounding protection. Insert/remove only with power off; check backplane guides to avoid bent pins.
• Routine maintenance – Inspect connectors quarterly, re-seat annually in high-vibration sites, and verify calibration where applicable. Firmware or CPLD updates, if any, should match your CPU OS image.

Quality & Certifications

• CE EMC compliance is typical for later XVME revisions; documentation available on request by board date code.
• UL/CSA recognition may apply at the system level (VME chassis), not always at the board level.
• RoHS: Many legacy VME boards are non‑RoHS; RoHS-status depends on production year and revision.
• Warranty: 365-day replacement/repair coverage provided by us for this item.

If you can share the exact XVME-677 assembly number and option code, we’ll map the I/O ranges, connector type, and any calibration details before shipment. That usually shortens commissioning time on site.