Description
Densan DVE‑486‑22 (9387A)
Functional Features: Multi‑channel galvanically isolated analog output channels. 16‑bit high‑precision digital‑to‑analog conversion. Programmable output range configuration for each channel. Output loop short‑circuit protection function. Front‑panel LED indicators for power and fault status. Built‑in hardware self‑calibration. VME bus register for output setting and status reading. Power‑on complete self‑diagnosis.
Application Scenarios: Semiconductor manufacturing equipment analog control, industrial closed‑loop process adjustment control, automated test bench analog signal output, special‑purpose automated machinery control rack, laboratory pilot equipment control system, precision processing equipment 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: 190000 hours
Material Composition: Front‑panel material is anti‑oxidation treated aluminum alloy. Main PCB substrate uses FR‑4 high‑temperature‑resistant glass‑fiber epoxy material. Backplane connector pins adopt gold‑plated copper alloy. DAC and isolation components use industrial‑grade chips. Fastening components are nickel‑plated steel.
Structural Features: 6U VME plug‑in circuit‑board structure. Metal front panel with locking pull‑handles and LED status indicators. Rear high‑density gold‑plated connector connects VME rack backplane. Circuit layout separates analog output area and digital logic area by isolation barrier. Analog output signal traces adopt anti‑interference wiring. Vent holes reserved for passive heat dissipation.
Working Principle: VME main controller writes target digital value into board register through VME backplane bus. Digital signal passes through isolation circuit and enters DAC chip. DAC converts digital value to analog voltage or current signal. Analog driving circuit amplifies signal and transmits to field load. When output short‑circuit happens, internal protection circuit activates, and fault information can be read via VME bus register.
Installation Requirements: Insert module to designated slot of 6U VME rack, tighten front‑panel locking screws. Ensure sufficient ventilation heat‑dissipation space inside cabinet. Adopt shielded twisted‑pair cable for analog output wiring. Keep analog signal cables away from high‑voltage power cables. Cut off rack total power before plugging or removing the board. Implement static discharge before touching circuit‑board surface.
Precautions for Use: Do not connect load exceeding channel rated driving capability. Wear anti‑static wristband during maintenance. Keep ventilation openings without dust buildup. Avoid working environment with corrosive vapor. Perform periodic hardware calibration according to equipment maintenance specification. Check shielding grounding condition of field cables regularly.
