Description
Densan DVE‑503 (9204A)
Technical Specifications: Bus standard: VME bus Signal configuration: mixed digital input, digital output, analog input, analog output ADC / DAC resolution: 16‑bit Isolation voltage: 1500 VAC between field circuit and VME bus circuit 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: Integrated multi‑type signal channels on single board. Galvanic isolation for all field‑connected channels. 16‑bit high‑precision analog‑digital and digital‑analog conversion. Each channel corresponds status LED indicator on front panel. Short‑circuit protection for output loops. Hardware self‑calibration for analog channels. VME bus interrupt function for signal state change. Complete power‑on self‑diagnosis function.
Application Scenarios: Semiconductor special‑process equipment control rack, compact automated test equipment, small‑size special‑purpose automated machinery VME control system, laboratory integrated pilot device control cabinet, compact‑layout industrial embedded control equipment, multi‑signal integrated monitoring and control unit.
Performance Parameters: Digital signal response time: less than 1 ms Analog conversion full‑scale accuracy: ±0.05% Vibration resistance: 10 Hz‑150 Hz, 0.5 g Shock resistance: 10 g peak acceleration, 11 ms duration MTBF value: 185000 hours
Material Composition: Front‑panel adopts anti‑oxidation treated aluminum alloy. Main PCB substrate uses FR‑4 high‑Tg glass‑fiber epoxy material. Backplane connector pins adopt gold‑plated copper alloy. Analog‑digital conversion chip, optocoupler isolation components adopt industrial‑grade devices. Fastening parts are nickel‑plated steel.
Structural Features: 6U VME plug‑in multi‑function I/O board structure. Metal front panel fitted with locking pull‑handles and multi‑group LED status indicators. Rear high‑density gold‑plated connector connects VME rack backplane. Internal circuit divides digital signal region, analog signal region and VME bus logic region, isolation barriers separate field side and control side. Reasonable component layout for heat dissipation. Vent holes on front panel for passive air cooling.
Working Principle: Field digital and analog signals enter board internal isolation circuit. Digital signals are converted to logic level recognizable by VME bus. Analog signals go through conditioning and isolation, then complete analog‑digital conversion. VME main controller reads all signal status and measurement data via backplane bus register. For output channels, VME bus writes control value, after isolation driving, output signals to field equipment. Fault status of each channel can be read through VME bus register.
Installation Requirements: Insert module to designated slot of 6U VME rack, tighten front‑panel locking screws. Guarantee adequate ventilation heat‑dissipation space inside control cabinet. Use shielded twisted‑pair cables for analog and long‑distance digital signal wiring. Separate field signal cables and high‑voltage power cables. Disconnect rack total power supply before plugging or removing the board. Perform static discharge before contacting circuit‑board surface.
Precautions for Use: Do not input signal exceeding channel rated voltage scope. Do not connect load beyond output channel rated capacity. Wear anti‑static wristband during maintenance and replacement work. Keep ventilation openings free of dust accumulation. Forbid installation in environment with corrosive gas. Conduct periodic calibration for analog channels according to maintenance specification. Inspect field cable shielding grounding condition regularly.
