Description
Densan DVESH7750
Technical Specifications: Bus specification: VME64 Power supply requirement: 5 VDC, 3.3 VDC On‑board interfaces: RS232 serial port, Ethernet interface Operating temperature: 0 ℃ to 55 ℃ Storage temperature: -40 ℃ to 85 ℃ Relative humidity: 5%‑95% non‑condensing Mounting specification: 6U VME plug‑in module Protection grade: IP20
Functional Features: Embedded industrial processor for real‑time control computation. On‑board RAM and non‑volatile flash storage. 10/100 Mbps Ethernet for upper system communication. Multi‑channel serial communication ports for peripheral device connection. Hardware watchdog for program runaway protection. Complete power‑on self‑test function. Front‑panel LED indicators for power, activity and fault state. High‑speed data interaction with other VME modules via backplane bus.
Application Scenarios: Semiconductor equipment main control rack, industrial real‑time embedded control system, large automated production line VME control cabinet, precision processing equipment controller, automated test equipment, factory critical process monitoring system.
Performance Parameters: Ethernet communication rate: 10/100 Mbps adaptive Serial port baud rate scope: 300 bps‑115200 bps Vibration resistance: 10 Hz‑150 Hz, 0.5 g Shock resistance: 10 g peak acceleration, 11 ms duration MTBF value: 189000 hours
Material Composition: Front panel adopts oxidation‑resistant aluminum alloy material. Main PCB uses FR‑4 high‑temperature‑resistant glass‑fiber epoxy substrate. Backplane connector contacts use gold‑plated copper alloy. Core computing chips adopt industrial temperature grade. Fastening components are nickel‑plated steel material.
Structural Features: Standard 6U VME single‑board computer plug‑in structure. Aluminum front panel fitted with locking pull‑handles, LED indicators and external interface sockets. Rear high‑density gold‑plated connector mates with VME rack backplane. Circuit board divides power region, core computation region and communication interface region independently. Heat‑dissipation area reserved for main processor chip. Panel ventilation holes realize passive air cooling.
Working Principle: After rack power‑on, DVESH7750 completes hardware initialization and self‑check. It loads embedded control program from on‑board flash memory. It exchanges commands and data with each peripheral I/O board via VME backplane bus. It transmits real‑time process data to upper monitoring host through Ethernet and serial interfaces. Hardware watchdog monitors program execution status continuously. System automatic reset will be triggered when software abnormality appears.
Installation Requirements: Insert module into specified slot of 6U VME rack, lock front‑panel screws. Keep adequate ventilation clearance inside cabinet. Use shielded cables for Ethernet and serial signal wiring. Separate communication signal cables and high‑voltage power cables. Cut off total rack power before installing or removing the board. Implement static protection before contacting PCB surface.
Precautions for Use: Do not exceed rated input voltage scope of the board. Wear anti‑static accessories in maintenance process. Keep panel ventilation openings free from dust and debris. Avoid installation in oil‑mist and corrosive vapor environment. Periodically inspect connector contact condition. Save project configuration files before replacing hardware module.
