Technical Specifications Multi‑channel high‑speed pulse input, back‑plane bus data interface. Operating power supplied by rack back‑plane. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Supports high‑frequency pulse input signal.
Functional Features Multi‑channel independent high‑speed pulse counting function. Supports frequency measurement, phase identification and latch capture function. On‑board hardware completes counting operation, reduces CPU load. Front‑panel LED indicators reflect channel signal status, module running and fault information. Built‑in hardware self‑diagnosis detects input circuit abnormality. Supports parameter configuration through system engineering tool.
Application Scenarios Spare high‑speed counting module for ABB DCS control rack. Widely used for flow pulse acquisition, rotating speed measurement and position counting in industrial production site.
Performance Parameters High‑frequency pulse stable acquisition performance. Independent multi‑channel counting without mutual interference. Fast hardware capture response characteristic.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. High‑speed signal processing chip, input signal conditioning circuit. Rack back‑plane plug‑in connector and field signal wiring terminals.
Structural Characteristics Standard rack plug‑in module structure. Rear connector connects to rack back‑plane bus. Front panel is equipped with field signal wiring terminals and multi‑group status LED indicators. Metal locking screw for rack slot fixing.
Working Principle SPHSS03 gets power supply from rack back‑plane bus. Field high‑frequency pulse signals enter each input channel, after hardware filtering and shaping, the module completes counting and frequency calculation. Process result data is transmitted to controller CPU through back‑plane bus.
Installation Requirements Connect field pulse signal wiring to front‑panel terminals. Restore rack power supply, set counting mode and related parameters in engineering software, check counting data consistency with field actual condition.
Usage Notes Field pulse signal level must match module specification. Cable shielding grounding should meet EMC requirement. Hot‑plug under powered state is prohibited.
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