Description
Densan DVE‑P7447‑50B
Technical Specifications: Bus compliance: VME ANSI/IEEE 1014 Mechanical format: 6U single‑slot VME plug‑in module Power‑supply input: 5 VDC, ±12 VDC supplied from VME backplane Operating temperature: 0 ℃‑55 ℃ Storage temperature: -40 ℃‑85 ℃ Relative humidity: 5%‑95% non‑condensing Protection grade: IP20 Backplane connector: DIN 41612 J1/J2
Functional Features: Bidirectional high‑speed data‑bridge function between external dedicated processor and VME bus. Optimized signal‑integrity circuit design for enhanced data‑transmission stability. Upgraded on‑board data‑buffer memory capacity. Front‑panel LED indicators for power, data‑activity and fault‑alarm status. Hardware‑implemented data‑integrity verification mechanism. Comprehensive power‑on hardware self‑diagnosis. VME bus interrupt‑signal output support. Built‑in enhanced EMC filtering circuit for resisting industrial‑site noise interference.
Application Scenarios: Semiconductor‑equipment VME control‑rack processor‑interface upgrade replacement project, industrial embedded‑processor expansion interface unit, automated‑test‑equipment high‑speed data‑transmission cabinet, special‑purpose automated‑machinery hybrid VME control system.
Performance Parameters: Optimized maximum bidirectional data throughput compared with 50A version Vibration resistance: 10 Hz‑150 Hz, 0.5 g Shock resistance: 10 g peak acceleration, 11 ms pulse duration MTBF value: 183000 hours
Material Composition: Front‑panel adopts oxidation‑resistant aluminum‑alloy material. Main printed‑circuit‑board uses FR‑4 high‑Tg glass‑fiber epoxy substrate. Backplane‑connector contact pins apply gold‑plated copper‑alloy. Logic chips and upgraded buffer‑memory components adopt industrial‑grade specification. Fastening hardware uses nickel‑plated steel.
Structural Features: Standard 6U single‑slot VME plug‑in mechanical construction. Metal front panel fitted with locking ejector handles and multi‑group LED status indicators. Rear high‑density gold‑plated DIN connector mates with VME rack backplane. PCB layout optimizes signal‑trace routing for better signal integrity, divides VME bus interface zone, upgraded buffer‑memory zone and external‑processor‑signal zone. Large number of decoupling components distributed over whole board. Ventilation cutouts reserved for passive heat dissipation.
Working Principle: After rack power‑on, DVE‑P7447‑50B executes hardware initialization and full self‑diagnosis sequence. It establishes connection with external dedicated processor hardware. It receives incoming data stream from processor side, temporarily stores data inside upgraded on‑board buffer memory, and forwards data to target VME modules over VME backplane bus. In reverse direction, it receives data from VME bus I/O modules and transmits data toward external processor unit. Optimized hardware integrity‑check circuit guarantees reliability of transmitted data. Front‑panel LED lamps display real‑time board operating status. Fault information can be read through VME‑mapped registers.
Installation Requirements: Insert module into designated empty slot of 6U VME rack chassis. Lock ejector handles and tighten front‑panel mounting screws to ensure stable backplane‑connector contact. Maintain sufficient ventilation clearance inside cabinet for heat dissipation. Deploy shielded cables for external‑processor‑interface wiring. Keep interface signal cables separated from high‑power heavy‑current cables. Disconnect rack main power supply before inserting or removing this circuit board. Complete static‑electricity‑elimination procedure before touching bare printed‑circuit‑board surface.
Precautions for Use: Prohibit over‑voltage input onto external‑processor‑interface terminals. Anti‑static wristband must be worn during maintenance and replacement work. Keep ventilation openings free of dust accumulation. Do not install in environment containing corrosive gas. Periodically inspect screw fastening condition and connector contact aging status.
