Technical Specifications: Input Signal Type: Pulse input signal, timer trigger signal Input Voltage Range: 5VDC‑24VDC Input Impedance: Standard industrial input impedance Input Current: Typical operating current, maximum limited current Response Time: ≤1 µs Channel‑to‑Backplane Isolation Voltage: 500V RMS Transient Surge Suppression: 1500V Operating Power Supply: +5VDC backplane power supply Communication Protocol: VME64 backplane bus protocol Operating Temperature: 0 °C to +60 °C Storage Temperature: -50 °C to +85 °C Relative Humidity: 5%‑95%, non‑condensing Mechanical Dimension: Standard 6U single‑slot VME rack module Certifications: CE, UL, industrial EMC standard compliance
Functional Features: Multi‑channel high‑speed pulse counting and timing function. Hardware filter for suppression of industrial electromagnetic interference. Hardware fault detection for input channel status. Built‑in self‑diagnosis for channel, power supply and internal circuit. 
Application Scenarios: VME‑bus industrial control rack. Production line pulse counting and speed measurement. Rotation speed monitoring for rotating machinery. Timing‑based process control for factory site. Pulse signal acquisition for petrochemical and power industry.
Structural Characteristics: Standard 6U single‑slot plug‑in VME module structure. Front‑panel LED indicators for power, fault and channel status. Front‑side terminal blocks for field pulse signal wiring. Golden‑finger connector for VME backplane bus connection. PCB conformal coating against moisture and electromagnetic interference. Mechanical locking structure to resist vibration shift. Anti‑loosening metal mounting screws.
Working Principle: Field pulse signals go into module via front terminals. Hardware filter circuits eliminate high‑frequency noise. Isolation components separate field circuit from internal logic. On‑board counter and timer units capture pulse edge and complete counting and timing calculation.
Installation Requirements: Install module into specified slot of standard 6U VME rack. Cabinet grounding shall strictly follow system technical specification. Field pulse wiring should use shielded twisted‑pair cables. Keep power cables apart from signal cables.
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