Description
Densan DVE‑486‑22S (9387A)
Technical Specifications: Bus specification: VME bus Output signal: analog voltage, analog current DAC resolution: 16‑bit Isolation withstand voltage: 1500 VAC between field and VME bus circuit Operating temperature: 0 ℃ to 55 ℃ Storage temperature: -40 ℃ to 85 ℃ Relative humidity: 5%‑95% non‑condensing Mounting format: 6U VME plug‑in module Protection grade: IP20
Functional Features: Multi‑channel isolated analog output, enhanced surge‑suppression design. 16‑bit high‑precision DAC conversion. Per‑channel programmable output range setting. Built‑in enhanced low‑pass signal filter. Output loop short‑circuit protection function. Front‑panel LED indicators for power supply and fault alarm. Hardware automatic self‑calibration function. VME bus register access for output configuration and fault reading. Power‑on complete self‑diagnosis.
Application Scenarios: Semiconductor equipment in high‑interference workshop environment, heavy‑duty industrial automation VME control cabinet, automated test system under complex electromagnetic environment, factory special‑purpose machinery closed‑loop adjustment control, pilot plant process control rack with heavy‑duty on‑site interference, precision equipment analog actuator driving control.
Performance Parameters: DAC settling time: less than 200 μs Full‑scale output accuracy: ±0.05% Vibration resistance: 10 Hz‑150 Hz, 0.5 g Shock resistance: 10 g peak acceleration, 11 ms duration MTBF value: 187000 hours
Material Composition: Front‑panel uses anti‑oxidation aluminum alloy. Main printed circuit board uses FR‑4 high‑Tg glass‑fiber epoxy substrate. Backplane connector contacts adopt gold‑plated copper alloy. DAC chip, isolation and surge‑suppression components adopt enhanced industrial‑grade specification. Fastening hardware uses nickel‑plated steel.
Structural Features: 6U VME plug‑in board structure. Metal front panel equipped with locking handles and LED status indicators. Rear multi‑pin gold‑plated connector mates with VME rack backplane. Internal circuit has independent surge‑suppression region, analog output region and digital logic region, separated by isolation barrier. Analog signal path adds dedicated anti‑interference component layout. Ventilation openings reserved for passive heat dissipation.
Working Principle: VME main controller writes digital setting value to board register via VME backplane bus. Digital signal passes through isolation circuit and enters DAC chip. DAC converts digital quantity to analog signal. Analog signal goes through enhanced surge‑suppression and filtering circuit, then outputs to field actuator. Short‑circuit protection triggers upon output loop fault, fault status information can be read from VME bus register.
Installation Requirements: Insert module into target slot of 6U VME rack, lock front‑panel screws. Maintain good ventilation and heat‑dissipation condition inside cabinet. Use shielded twisted‑pair cable for analog output signal wiring. Analog signal cables must keep sufficient distance from high‑power cables. Cut off rack total power before installing or removing board. Complete static discharge operation before contacting circuit‑board.
Precautions for Use: Do not connect load beyond rated driving scope of output channel. Wear anti‑static wristband during all maintenance procedures. Keep ventilation openings free of dust accumulation. Do not apply in environment containing corrosive gas. Conduct periodic hardware calibration according to maintenance manual. Regularly inspect shielding grounding performance of field signal cables.
