Description
- Motorola MVME147-023 | Ethernet SCSI VME Module
2. Unboxing & Physical Snapshot
- Model & Brand: Motorola MVME147-023 VMEbus Single Board Computer. This configuration uses a 32 MHz MC68030 processor, MC68882 floating-point coprocessor, 16 MB parity-protected DRAM, Ethernet, and SCSI interfaces.
- Approximate Physical Dimensions (W × H × D): Approximately 233 × 160 × 1.6 mm (9.2 × 6.3 × 0.06 in.) excluding front panel hardware. The module uses the standard 6U VME form factor.
- Estimated Shipping Weight: Approximately 1.3–1.5 kg (2.9–3.3 lb) including ESD shielding bag, front panel protection, and transport packaging.
- What’s in the Box:
- Motorola MVME147-023 VME single-board computer
- Front panel assembly
- Anti-static (ESD) shielding bag
- Protective foam packaging
- Installed EPROM/firmware devices when supplied
- Product identification label and traceability documentation
3. Product Introduction
The Motorola MVME147-023 installs into a 6U VMEbus chassis, where the P1 and P2 connectors interface with the system backplane. Confirm the backplane voltage rails, slot assignment, and airflow direction before insertion. The extraction handles should control the installation force; pushing directly on the PCB can damage the connector assembly or board surface.
This embedded controller was designed for extended service in industrial computing, instrumentation, and specialized automation equipment. The MVME147-023 combines the MC68030 CPU, MC68882 floating-point unit, 16 MB parity DRAM, SCSI DMA interface, Ethernet capability, serial communication channels, and VMEbus system controller functions (which makes it a common maintenance target for legacy systems that remain operational decades after original installation). Inspect the EPROM sockets, battery-backed memory, connector fingers, and PCB coating before returning a stored unit to service.
4. Core Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Motorola |
| Model Number | MVME147-023 |
| Product Type | 6U VME Single Board Computer |
| Processor | MC68030 |
| Processor Clock Speed | 32 MHz |
| Floating Point Processor | MC68882 |
| DRAM Memory | 16 MB parity-protected DRAM |
| SRAM | 4 KB battery-backed SRAM |
| Real-Time Clock | Battery-backed time-of-day clock |
| EPROM Support | Four ROM/PROM/EPROM/EEPROM sockets |
| VME Interface | A32/D32 master; A24/D16 compatible |
| VME Functions | System controller, interrupter, requester |
| Ethernet Interface | Supported |
| SCSI Interface | DMA-capable SCSI bus |
| Serial Ports | Four EIA-232-D compatible ports |
| Parallel Port | 8-bit Centronics-compatible interface |
| Timers | Two programmable tick timers |
| Watchdog Timer | Integrated watchdog function |
| Power Input | +5 VDC, +12 VDC, -12 VDC |
| Typical Power Consumption | Approximately 20–25 W class |
| Cooling Method | Forced-air VME chassis cooling |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -40°C to +85°C |
Motorola MVME147-023
5. Global Compliance & Industry Certifications
Expected regulatory approvals and compliance considerations for the Motorola MVME147-023 include:
- CE Mark compliance when installed within a qualified equipment assembly
- UL/cUL recognition where applicable to the complete VME system
- FCC Class A industrial computing emissions considerations
- IEEE 1014 VMEbus compatibility
- RoHS compliance dependent on manufacturing date and refurbishment history
- ATEX/IECEx suitability only when integrated into an approved hazardous-area enclosure
- Marine approvals such as DNV GL only for specifically certified equipment packages
The MVME147-023 was evaluated as part of industrial computer assemblies rather than as a standalone field device. EMC behavior depends on the chassis shielding, power supply filtering, grounding network, and external cable arrangement.
Verify specific lot certifications with OEM.
6. Long-Term Storage & Asset Preservation Guide
Keep the MVME147-023 inside an anti-static (ESD) shielding bag during storage. The VME edge contacts, EPROM sockets, and exposed connector surfaces require protection from oxidation.
Inspect the battery-backed SRAM and real-time clock components before installation. Older boards may experience battery aging, and leakage can damage nearby PCB traces if left unnoticed.
Maintain warehouse humidity below 60% RH. Avoid temperature cycling and corrosive environments. Before releasing the board into service, record the serial number, PCB revision, EPROM labels, memory size, and visual inspection results.
7. Physical Installation Prerequisites
- Install only in a compatible 6U VMEbus chassis.
- Verify P1/P2 backplane compatibility before installation.
- Confirm VME system controller configuration and slot location.
- Use extraction handles and card guides correctly.
- Maintain continuous forced-air cooling through the chassis.
- Leave approximately 50 mm clearance around airflow paths where practical.
- Confirm chassis protective earth grounding.
- Inspect connector fingers and mounting hardware before energization.
- Verify EPROM firmware compatibility with the target application.
8. Buyer’s FAQ (Logistics & Compliance Focus)
Q: What HS Tariff Code is commonly used for the Motorola MVME147-023?
A: VME single-board computers are commonly evaluated under electronic computing assembly classifications, often within HS 8471 categories. The final classification depends on the declared function and importing country’s customs requirements.
Q: Does Country of Origin affect importing the MVME147-023?
A: Yes. COO affects customs clearance, asset records, and supplier documentation. Confirm origin from the product label, commercial invoice, and available manufacturer records before shipment.
Q: Should shipping insurance be included for this Motorola VME board?
A: Recommended. The module contains older semiconductor devices, socketed components, and exposed VME connectors. Use ESD packaging, impact protection, and documented receiving inspection procedures.
Q: Does the MVME147-023 include the latest firmware pre-loaded?
A: Firmware depends on the installed EPROM contents and previous application history. The board supports Motorola 147Bug firmware stored in ROM devices, but the correct firmware revision must be verified against the target VME system before commissioning.
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