Description
Densan DVE‑721‑PbF(9545A)
Technical Specifications: Bus standard: VME ANSI/IEEE 1014 Mechanical format: 6U single‑slot VME plug‑in module Signal type: galvanically isolated digital output Field‑side load rated voltage: 24 VDC Per‑channel maximum output load current: 0.3 A Isolation withstand voltage: 1500 VAC between field circuit and VME bus logic circuit Operating temperature: 0 ℃‑55 ℃ Storage temperature: -40 ℃‑85 ℃ Relative humidity: 5%‑95% non‑condensing Protection grade: IP20 Backplane connector: DIN 41612 J1
Functional Features: Multi‑channel optocoupler‑isolated digital output channels. Lead‑free PbF soldering process satisfies RoHS requirement. Each channel corresponds dedicated LED status indicator on front panel. Every output channel integrates hardware over‑current and short‑circuit protection circuit. Power‑on complete hardware self‑diagnosis routine. VME bus register‑based output‑value setting and status reading. Built‑in EMC surge‑suppression components for field‑output terminals. VME bus interrupt support for channel‑fault reporting.
Application Scenarios: RoHS‑compliant semiconductor‑manufacturing‑equipment control rack, automated assembly‑line discrete‑signal output control, industrial‑robot peripheral actuator drive control, automated‑test‑equipment I/O cabinet, new‑energy‑industry special‑purpose‑machinery VME control system.
Performance Parameters: Output channel response time: less than 1 ms Per‑channel maximum continuous load current: 0.3 A Vibration resistance: 10 Hz‑150 Hz, 0.5 g Shock resistance: 10 g peak acceleration, 11 ms pulse duration MTBF value: 187000 hours
Material Composition: Front‑panel adopts anti‑oxidation aluminum‑alloy material. Main printed‑circuit‑board uses FR‑4 high‑Tg glass‑fiber epoxy substrate with UL94‑V0 flame‑retardant rating. Backplane‑connector contact pins adopt gold‑plated copper‑alloy. Isolation optocouplers and drive chips are industrial‑grade components. Whole‑board soldering follows lead‑free PbF manufacturing standard. Fastening hardware adopts nickel‑plated steel.
Structural Features: 6U single‑slot VME plug‑in mechanical construction. Metal front panel equipped with locking ejector handles and per‑channel LED status lamps. Rear high‑density gold‑plated DIN connector mates with VME rack backplane. PCB layout strictly separates field output isolation zone and VME bus logic zone. Every output channel is equipped with independent over‑current protection component. Ventilation cutouts on front panel support passive convection heat dissipation.
Working Principle: VME main controller writes target output state value into DVE‑721‑PbF hardware registers over VME backplane bus. Internal logic circuit drives optocoupler isolation components, optocoupler controls on‑off status of field‑side output loop. When output‑loop short‑circuit or over‑current fault occurs, hardware protection circuit activates immediately to protect on‑board circuitry. Fault status information can be read through VME bus registers. Front‑panel LED lamps directly reflect real‑time on‑off status of each output channel.
Installation Requirements: Insert module to designated empty slot of 6U VME rack chassis. Engage locking ejector handles and tighten front‑panel mounting screws. Guarantee adequate ventilation heat‑dissipation space inside control cabinet. Use shielded cables for field output‑loop wiring. Separate field output cables away from high‑power heavy‑current cables. Disconnect rack total power supply before plugging or removing this circuit board. Execute static‑electricity‑discharge procedure before touching bare printed‑circuit‑board surface.
Precautions for Use: Do not connect field‑side load exceeding per‑channel rated current capacity. Wear anti‑static wristband during maintenance and replacement operations. Keep ventilation openings free of dust accumulation. Forbid installation in environment containing corrosive gas. Periodically inspect field‑wiring terminal tightness and connector contact condition.
