XYCOM XVME400

The XYCOM XVME‑400 (along with its counterparts XVME‑401, XVME‑490, and XVME‑491) is a four-channel serial I/O module compliant with the VMEbus (IEEE 1014) standard. They feature a single-height, single-width form factor (XVME‑400/401) or double-height, single-width design (XVME‑490/491), and can be directly inserted into VME‑P1 (single-height) or P1 + P2 (double-height) backplanes. Equipped with two Zilog Z8530 Serial Communication Controllers (SCCs), the modules offer RS‑232C (400/490) or RS‑422A/RS‑485 (401/491) interfaces. They support asynchronous, synchronous, and bit-oriented protocols, with maximum baud rates of 57.6 KB/s (asynchronous) and 500 KB/s (synchronous).

Key Technical Specifications

• Power Requirements: +5 V typ 1.1 A (400/490) / 1.4 A (401/491), +12 V typ 100 mA. Maximum current ratings are 1.3 A (400/490) and 1.6 A (401/491) respectively.
• Operating Temperature: 0 °C ~ 65 °C (operating), -40 °C ~ 85 °C (non-operating).
• Dimensions: Single-height modules 3.9 in × 6.3 in (approx. 99 mm × 160 mm), double-height modules 9.2 in × 6.3 in (approx. 234 mm × 160 mm).
• Interfaces: Four front-panel RS‑232C (400/490) or RS‑422A/RS‑485 (401/491) connectors (JK1, JK2), plus corresponding VME‑P2 connections (490/491).
• Compatibility: Complies with VMEbus A16:D08(O) DTB slave specifications, supporting interrupt vector D08(O) (dynamic) and I(1)-I(7) interrupt signals.

Product Features

• Modular Plug-and-Play: Utilizes standard VME slots and supports hot-swapping, simplifying on-site replacement and maintenance.
• Low Power Consumption & High Heat Dissipation: Incorporates low-power chips and passive cooling structure, ensuring low energy consumption and heat generation for enhanced reliability.
• Multi-Protocol Support: The Z8530 SCC provides multiple communication modes including asynchronous, word synchronous, and bit-oriented, compatible with various industrial protocols.
• Dual Bus Channels: Single-height modules offer direct serial ports via front-panel JK interfaces; double-height modules route I/O to VME‑P2 for easy wiring in high-density chassis.
• Two-Year Warranty: All XVME‑400/401/490/491 series come with a two-year warranty covering parts and labor.

Structure and Composition

• Front Panel: Four serial ports (RS‑232C or RS‑422A/RS‑485), each equipped with RTS, CTS, DCD control signals (DTR available on select models).
• Main Control Board: Two Z8530 SCCs, address/data buffers, bus cycle control, and power regulation modules.
• Backplane Interface: 96-pin VME‑P1 (single-height) or P1 + P2 (double-height) connectors for transmitting address, data, and control signals.
• Power Management: Internal 5 V/12 V voltage regulators meeting VMEbus power supply specifications.
• Heat Dissipation Structure: Combined metal heat sinks and ventilation holes for passive cooling.

Typical Application Areas

• Industrial Automation Control: Serial data acquisition and device communication for PLCs, DCS, and process control systems.
• Test and Measurement Instruments: Multi-channel instrument control for laboratory or on-site testing equipment.
• Aerospace and Defense: Real-time control and data links requiring high reliability.
• Manufacturing Production Lines: Serial interface aggregation for robots, CNC machine tools, and sensor networks.
• Energy and Power: Remote monitoring and command issuance for power plants and distribution automation systems.

Installation and Maintenance Guidelines

• Installation Preparation: Ensure the corresponding VME‑P1 (single-height) or P1 + P2 (double-height) slot in the chassis is empty, and use plastic guide cards to position the module.
• Insertion/Removal Operation: Hold the module with the front panel handle facing down, gently push it into the backplane until all 96-pin connectors are fully engaged, and confirm the latch is secured.
• Power Check: Before powering on, verify that the power voltage is within the range of 5 V ± 5% and 12 V ± 5%, and ensure the current does not exceed the rated value.
• Hot-Swapping Notes: Perform replacement only when the system is in hot-swap mode and the bus is not in critical data transmission to avoid bus errors.
• Troubleshooting: Use VMEbus interrupt vectors and status registers to check the module’s self-test results; in case of communication errors, first inspect the grounding and shielding of RS‑232/RS‑422 cables.
• Regular Maintenance: Remove dust from the module’s heat sinks, check for oxidation on connector contacts, and use contact cleaner if necessary.

If you would like to learn more about our products and services, please feel free to contact us at any time!

• Sales Manager : Jinny
• Email : sales5@xrjdcs.com
• Whatsapp/Mobile:+86 15359273791

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