Description
Densan DVE‑686‑51(9538)
Technical Specifications: Bus compliance: VME64 bus standard Mechanical specification: 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: High‑speed VME64 bus data transmission capability. On‑board large‑capacity non‑volatile flash memory for parameter storage. Hardware watchdog circuit to implement automatic fault reset upon program runaway. Front‑panel multi‑group LED indicators reflecting power, running and fault alarm status. Support VME backplane interrupt‑signal output. Built‑in multi‑stage EMC filtering circuit to resist industrial‑site electromagnetic noise. Complete power‑on hardware self‑diagnosis function. On‑board logic processing unit executes real‑time signal pre‑computation.
Application Scenarios: Semiconductor wafer manufacturing equipment control cabinet, precision robotic motion‑control system, automated optical inspection equipment, large‑scale factory‑automation VME rack system, electronic‑component production‑line control unit, industrial real‑time process‑monitoring equipment.
Performance Parameters: VME bus maximum data throughput: up to 40 MB/s Hardware watchdog trigger time is configurable from 10 ms to 2 seconds Vibration resistance: 10 Hz‑150 Hz, 0.5 g Shock resistance: 10 g peak acceleration, 11 ms pulse duration MTBF value: 194000 hours under standard cabinet cooling condition
Material Composition: Front‑panel adopts anti‑oxidation 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. Core logic and memory components adopt full industrial‑grade specification. Fastening hardware consists of nickel‑plated steel.
Structural Features: Standard 6U single‑slot VME plug‑in structure. Metal front panel fitted with locking ejector handles and array of LED status indicators. Rear multi‑row high‑density gold‑plated DIN connector mates with VME rack backplane. Internal PCB implements strict circuit zoning for logic computation area, memory storage area and bus interface area. Large number of decoupling capacitors distributed on whole printed‑circuit‑board for signal stability. Ventilation openings reserved on metal front panel for passive heat dissipation.
Working Principle: After rack power‑on, DVE‑686‑51 executes full hardware self‑diagnosis sequence. It receives configuration commands and transmits processed real‑time data through VME backplane bus. On‑board logic processing unit completes pre‑computation of signals transferred from other VME I/O boards. Hardware watchdog continuously monitors program execution status. When program abnormality occurs, watchdog triggers hardware reset action to restore normal module operation. All operating status information outputs via front‑panel LED indicators and VME bus accessible registers.
Installation Requirements: Insert module fully into designated slot of 6U VME rack chassis. Lock front‑panel ejector handles and tighten mounting screws to guarantee reliable backplane‑connector connection. Maintain sufficient air‑circulation clearance around rack for heat dissipation. Separate signal cables and high‑power drive cables inside control cabinet. Disconnect total rack power supply before inserting or removing this board. Perform static discharge operation before touching bare printed‑circuit‑board surface.
Precautions for Use: Strictly avoid over‑voltage input onto board power‑supply pins. Anti‑static wristband must be worn during maintenance and replacement procedures. Keep front‑panel ventilation openings free of dust accumulation. Do not install in environment with corrosive gas or conductive dust. Periodically inspect front‑panel screw fastening condition and connector aging status. Back‑up all stored configuration parameters before hardware replacement operation.
