XYCOM XVME-977 – VMEbus Module for Legacy System Upkeep and Industrial I/O Reliability

The XYCOM XVME-977 is a 6U VMEbus plug-in board used widely in legacy automation racks where long-term stability matters more than fancy new features. From my experience supporting older Xycom/GE Fanuc VME frames, this model shows up as a dependable building block for plant upgrades, spares stocking, and like-for-like replacements—especially when downtime is the real enemy. You might notice that it fits straight into standard 6U VME subracks and draws power from the backplane, which keeps installation straightforward and predictable.

One thing I appreciate is how it typically plays nicely with mixed-vendor VME chassis and backplanes. In many cases, teams use the XVME-977 to keep established control strategies running without rewriting PLC logic or recertifying the entire line. A maintenance lead at a packaging plant summed it up for me: “We swapped in a refurbished XVME-977 over lunch break—no wiring changes, no surprises.” That’s usually the kind of low-risk change operations is asking for.

Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: 1 week if in stock; not more than 1 month at the latest
• Payment terms: 50% advance payment; full payment prior to delivery
• Express carriers: FedEx, UPS, DHL
• Quality checks: Functional testing before shipment, ESD-safe packaging, and traceable inspection records

Key Features

• 6U VME Form Factor – Installs into standard 6U VME subracks; easy drop-in for existing Xycom racks.
• Backplane-Powered – Draws regulated +5 VDC (and, in many cases, ±12 VDC as needed) directly from the VME backplane for clean integration.
• Legacy System Compatibility – Intended for continued operation of mature lines where software and wiring changes are costly.
• Stable Revision Control – Typically consistent firmware/board revisions that avoid revalidation headaches.
• Industrial Durability – Built for extended operation in control cabinets; usually handles 0–55°C ambient in most plant environments.
• Service-Friendly – Clear front-panel access and standard VME ejector handles for quick swap-outs.

Technical Specifications

Note: Exact channel counts and connectorization can vary by board revision or option set. If you share your rack part number and backplane type, we’ll confirm fit and pinout before shipping.

Related or Supporting Products

• XYCOM XVME-976 – Companion VME module often used in similar I/O roles; check channel mix and front I/O differences.
• XYCOM XVME-240 (Digital Output) – For systems standardizing on discrete outputs; relay/TTL options vary by version.
• XYCOM XVME-652 (Analog Input) – Useful when analog acquisition is required alongside the XVME-977.
• VME Subracks & Power – 6U VME chassis, card guides, and power supplies sized for +5 V heavy loads improve long-term stability.
• Cables/Transition Boards – 96-pin DIN ribbon-to-terminal adapters for clean field wiring inside the cabinet.

Installation & Maintenance

• Cabinet & Rack – Install in a standard 6U VME chassis with proper card guides. Maintain at least 25 mm clearance for airflow, especially near high-load slots.
• Power & Grounding – Verify backplane +5 V and ±12 V rails are within tolerance under load. Use a single-point ground reference and ESD precautions during handling.
• Wiring – If front-panel connectors are used, label harnesses and secure strain relief to avoid vibration-related faults.
• Cooling – Keep cabinet temperature within 0–55 °C. In most cases, adding a filtered fan tray drops hot-spot temperatures by 5–8 °C.
• Routine Care – Quarterly dust removal using dry, oil-free air at low pressure; check ejector handles and front-panel screws for tightness.
• Configuration – Document jumper/DIP settings and firmware revisions (if applicable). A photo log saves time for future swaps.

Quality & Certifications

• Certifications – Typically CE for industrial environments; UL recognition depends on the system-level enclosure. Legacy units may be non-RoHS.
• Quality System – Supplied with functional testing and inspection reports; serial/revision traceability recorded.
• Warranty – 365-day coverage. Any DOA or stability issues are handled with repair or replacement.

If you can share your existing rack details (backplane part number, slot position, and any front connector pinouts), we’ll verify compatibility and lock the exact configuration before we proceed. That small step typically prevents commissioning delays.