XYCOM XVME-5312 – VMEbus isolated digital I/O for reliable machine and process interlocks

The XYCOM XVME-5312 is part of the classic XVME family, built for 6U VME systems where dependable, noise-immune discrete I/O matters. From my experience, this board is typically used to bring field signals (limit switches, relays, dry contacts, and 24 VDC sensors) safely into a VME controller with opto-isolation and clean interrupt handling. You might notice that it slips into a single backplane slot and just works—no drama—making it a practical choice for life-extensions, retrofit projects, or keeping legacy VME racks productive without re-engineering the whole cabinet.

Our Order Process & Guarantees

• Warranty: 365 days
• Lead time: 1 week when in stock; no more than 1 month at the latest
• Payment: 50% in advance, full payment prior to delivery
• Express options: FedEx, UPS, DHL
• Each unit is function-checked before shipment; ESD-safe packing included

Key Features

• VMEbus 6U form factor – Fits standard 19-inch VME subracks; installs as a single-slot board for straightforward expansion.
• Isolated digital inputs (typical 24 VDC) – Opto-isolated front-end helps reject plant noise and protects the backplane logic.
• Change-of-state and interrupt support – In many cases, the XVME-5312 provides programmable interrupt capability so the CPU only wakes when needed.
• Banked commons for field wiring – Practical when mixing proximity sensors and dry contacts; reduces wiring complexity at the cabinet.
• Deterministic, polled or interrupt I/O – Works in both scan-based applications and event-driven interlocks.
• Industrial temperature and EMC resilience – Typically designed for 0–50°C cabinet environments with good noise immunity.
• Lifecycle-friendly – Ideal for sustaining legacy VME control systems without touching validated software or field terminations.

Technical Specifications

Note: Channel count and exact voltage thresholds can vary by XVME-5312 variant. If you’re matching a site spare, sharing the suffix and faceplate photo typically helps confirm the exact option.

Related or Supporting Products

• XYCOM XVME-5300 series – Similar digital I/O boards in the same family; some variants focus on outputs or mixed I/O.
• XYCOM XVME-5320 – Typically a companion digital output module if you need relay or transistor outputs alongside the 5312’s inputs.
• VME 6U chassis and power supplies – Standard 19-inch subracks with adequate +5 V capacity and airflow (Schroff/Elma-type mechanicals).
• 50-pin to screw-terminal breakout boards – For clean cabinet wiring and labeling; choose DIN-rail terminal boards compatible with the front header pinout.
• Shielded ribbon or discrete cable assemblies – Reduces noise pickup in cabinets with VFDs or large contactors.

A maintenance manager who swapped this into an aging packaging line told us the best part was “no software change.” The I/O map lined up as expected and they were back up in under an hour—this seems to be a common theme with XVME replacements.

Installation & Maintenance

• Cabinet & environment – Install in a VME-compliant subrack with continuous airflow; target 0–50 °C. Keep signal cables away from high-voltage and VFD motor leads.
• Backplane & slotting – Seat firmly into the VME connector; check standoffs and injector/ejector levers. From my experience, reseating resolves many intermittent faults.
• Field wiring – Use shielded cable for long runs. Tie shields at one end to avoid ground loops. Observe the module’s common/return and bank grouping.
• Power budgeting – Verify +5 V margin on the VME supply; add up card currents and keep at least 15–20% headroom.
• Safety – De-energize cabinet power before inserting/removing boards. Observe ESD handling with grounded wrist straps.
• Routine checks – Quarterly connector inspection, dust removal with dry air, and verification of critical input thresholds. If firmware or CPLD options exist, keep a backup of the programmed image.
• Diagnostics – Use the CPU’s VME test utility (or a simple polled test app) to confirm address map and interrupt lines before live commissioning.

Quality & Certifications

• CE marking on most production units for EMC and safety (legacy units may vary)
• UL/CSA recognition typically available for the series
• RoHS compliance depends on production date; for legacy spares, non-RoHS versions are common—please specify if RoHS is mandatory
• Manufacturer warranty practices vary by vintage; we provide a 365-day warranty and test report with shipment

If you share your current VME slot map and the exact XVME-5312 front-panel options, we can confirm pinout, channel count, and ship a fully compatible unit with the right breakout accessories.