Description
Densan Dve‑440(9214)
Technical Specifications: Bus type: VME bus Input signal type: voltage signal, current signal Analog‑to‑digital conversion resolution: 16 bit Galvanic isolation rating: 1500 VAC between field and bus side 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: Multi‑channel isolated analog signal acquisition. High‑precision 16‑bit ADC conversion circuit. Programmable input range configuration via VME bus register. Front‑panel LED indicators for power and fault alarm. Built‑in signal filtering circuit to suppress site noise. Hardware self‑calibration function. VME bus interrupt support when data conversion completes. Power‑on self‑diagnosis function.
Application Scenarios: Semiconductor equipment temperature and pressure monitoring, industrial precision process analog measurement, automated test equipment signal acquisition cabinet, chemical pilot plant VME control rack, new‑energy equipment parameter monitoring system, precision manufacturing equipment condition monitoring.
Performance Parameters: ADC conversion sampling rate: adjustable per channel Measurement precision: ±0.05% full scale Vibration resistance: 10 Hz‑150 Hz, 0.5 g Shock resistance: 10 g peak acceleration, 11 ms duration MTBF value: 194000 hours
Material Composition: Front‑panel adopts anti‑oxidation aluminum alloy. Main circuit board uses FR‑4 high‑Tg glass‑fiber epoxy substrate. Backplane connector contacts use gold‑plated copper alloy. Signal conditioning components adopt high‑precision industrial‑grade devices. Fastening hardware uses nickel‑plated steel.
Structural Features: 6U VME plug‑in board structure. Metal front panel fitted with locking handles and status LED indicators. Rear multi‑pin gold‑plated connector mates with VME rack backplane. Circuit board divides analog signal region and digital logic region strictly, separated by isolation barrier. Analog signal path adopts impedance‑matching layout. Ventilation holes reserved for heat dissipation.
Working Principle: Field analog voltage or current signal accesses on‑board signal conditioning circuit. Signal goes through filtering and isolation processing, then sends to high‑precision ADC chip. ADC converts continuous analog signal into discrete digital value. VME bus reads converted digital measurement value from board register and delivers data to upper single‑board computer. Built‑in self‑calibration circuit compensates measurement deviation caused by temperature drift.
Installation Requirements: Insert module to designated VME rack slot and lock front‑panel screws. Ensure good cabinet ventilation environment. Use shielded twisted‑pair cable for analog signal wiring. Analog signal cables must keep distance from power cables. Disconnect rack total power before installing or removing board. Perform static discharge before contacting circuit board.
Precautions for Use: Do not input signal beyond configured measurement range. Wear anti‑static wristband during maintenance work. Keep ventilation openings clean without dust buildup. Avoid installation in environment with corrosive vapor. Execute regular calibration according to equipment maintenance manual. Check cable shielding grounding condition periodically.
