Technical Specifications High‑density multi‑channel isolated digital input, 24 V DC signal level. Auxiliary power supply 24 V DC. Typical power consumption 4.0 W. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Module surface IP20. Complies with ABB industrial I/O technical requirements.
Functional Features Collects multi‑channel field on‑off status signals. Realizes galvanic isolation between field side and control side. Front‑panel LED reflects each channel input status. Transmits status data to controller via back‑plane bus. Supports channel hardware self‑diagnosis.
Application Scenarios Suitable for large‑scale digital signal acquisition in chemical, metallurgy and power‑plant control systems. Used for project construction and on‑site spare‑part replacement.
Performance Parameters Each channel signal response keeps stable. Isolation circuit suppresses industrial electromagnetic interference. LED status feedback is real‑time and accurate.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Optocoupler isolation components, signal processing circuit. Reinforced plastic module housing. Screw‑type field wiring terminals.
Structural Characteristics Rack‑mount plug‑in module structure. Front panel is equipped with LED indicators corresponding to each channel. Rear side connects rack back‑plane bus.
Working Principle After power‑on, module executes hardware self‑check. Field switch signal passes optocoupler isolation unit and converts to internal logic signal. Multi‑channel status data is uploaded to controller through back‑plane bus.
Installation Requirements Insert module into specified rack slot and tighten locking screw. Connect 24 V DC auxiliary power supply. Complete field signal wiring strictly follow engineering schematic drawing.
Usage Notes Anti‑static protection shall be adopted during handling. Hot‑swap operation under powered state is forbidden. Avoid surge voltage impact on input channels. Periodically inspect terminal fastening condition.
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