XYCOM 94687-002

This is a memory expansion module of XYCOM, model number 94687‑002. It is compatible with the I/O and CPU boards of XYCOM XVME‑200 and XVME‑500 series, providing the system with additional high-speed cache or temporary data storage space.

Key Technical Specifications

• Capacity: Supports 64 MB–256 MB DDR/DDR2 memory.
• Operating Voltage: +5 V (compatible with VME standard power supply).
• Interface: 32-bit VME‑bus data bus, supporting transmission rates of 33 MHz or 40 MHz.
• Dimensions: Standard VME‑bus 6U height (approx. 100 mm), width compliant with 3U/6U chassis specifications.
• Environmental Resistance: Operating temperature ranges from -40 °C to +85 °C; vibration and shock resistance meet the IEC 60068 standard.

Product Features

1. High ReliabilityEquipped with industrial-grade DDR/DDR2 chips and built-in Error Checking and Correction (ECC) function, it ensures the integrity of critical data in harsh industrial environments.
2. Plug-and-PlayCompliant with VME‑bus hot-swapping specifications, the module can be put into use immediately after installation without additional wiring.
3. Modular DesignSupports flexible stacking or replacement according to system requirements, effectively reducing maintenance costs and downtime.
4. Wide Temperature RangeSuitable for severe industrial sites such as high-temperature workshops and low-temperature warehouses.

Structure and Components

• Front Panel: Marked with model number, capacity, batch number, and equipped with a power indicator light for intuitive status monitoring.
• Motherboard: Integrates DDR/DDR2 memory chips, ECC controller, VME interface bridge chip, and heat sink to ensure stable data processing and transmission.
• Connector: Standard 36-pin VME‑bus slot with a dust cover to prevent dust accumulation and connector damage.
• Heat Dissipation System: Aluminum alloy heat sink and optional fan work together to maintain thermal stability during long-term operation.

Typical Application Fields

• Industrial Automation Control: Serves as high-speed cache for PLC and SCADA systems, improving real-time data processing efficiency.
• Process Control and Monitoring: Enables real-time data acquisition in continuous production lines of petroleum, chemical, metallurgical and other industries.
• Test and Measurement Instruments: Applicable to high-speed data sampling and waveform storage scenarios.
• Embedded Computing Platforms: Ideal for VME‑bus computing nodes that require additional memory expansion.

Installation and Maintenance Guidelines

1. Power-Off Inspection
    

   Before replacing or adding the module, ensure the system power is turned off and complete the discharge process to avoid electrical hazards.

2. Slot Positioning
    

   Align the module with the buckle direction of the VME‑bus slot according to the marks on the chassis backplane, then insert it smoothly.

3. Fastening Screws
    

   Use the screws provided with the module to fix the board firmly, preventing loosening caused by vibration during operation.

4. Power-On Self-Test
    

   After power-on, the system will automatically detect the module status; the indicator light will turn on if it is functioning normally.

5. Regular Cleaning
    

   Check the heat sink and fan (if installed) every six months, and remove dust to maintain efficient heat dissipation.

6. Firmware Upgrade
    

   If a new version of VME‑bus control firmware is released, it is recommended to update it synchronously to be compatible with the latest system functions.

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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