Technical Specifications Multi‑channel pulse counter input, input signal 24 V DC. Auxiliary power supply 24 V DC. Typical power consumption 4.2 W. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Module surface protection grade IP20. Complies with ABB industrial I/O module specification.
Functional Features Captures high‑speed pulse signal from field counting equipment. Executes pulse counting and frequency calculation. Front‑panel LED indicators reflect channel working and fault status. Built‑in wire break detection function for field loop. Supports data transmission via system back‑plane bus.
Application Scenarios Applied for flow metering, rotation speed measurement and pulse counting in chemical, power and metallurgy industries. Used for new project construction and on‑site spare‑part replacement.
Performance Parameters Supports stable high‑frequency pulse acquisition. Wire‑break detection responds rapidly. Back‑plane bus data transmission maintains reliable performance. LED indication gives accurate channel status feedback.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Pulse acquisition chip, signal conditioning and isolation components. Reinforced plastic module housing. Screw‑type field signal terminals. Copper‑alloy back‑plane plug‑in contact pieces.
Structural Characteristics Standard rack‑mount plug‑in module structure. Front panel is equipped with LED status indicators for each channel. Rear side connects rack back‑plane bus. Module width 25 mm, height 130 mm, depth 120 mm. Weight approximately 0.44 kilogram.
Working Principle After power‑on, module completes hardware self‑check. Field pulse signal passes conditioning and isolation circuit. Internal counter unit accumulates pulse quantity and calculates frequency value.
Installation Requirements Insert module into designated rack slot and tighten locking screw. Connect 24 V DC auxiliary power supply. Complete field pulse signal wiring strictly according to engineering drawing.
Usage Notes Adopt anti‑static protection during handling. Hot‑swap under powered condition is forbidden. Separate signal cables from high‑power power cables. Periodically check terminal tightening torque. Inspect field sensor loop integrity during maintenance cycle.
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