Technical Specifications Multi‑channel digital input, rated input signal 24 V DC. Back‑plane S800 I/O bus interface. Auxiliary power supplied by I/O rack back‑plane, typical power consumption 3.0 W. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Group‑wise channel galvanic isolation.
Functional Features Acquires on‑off status of field 24 V DC digital signals. Completes signal isolation and level conversion. Transmits channel status data to controller via S800 I/O bus. Front‑panel LED shows real‑time status of each input channel. Built‑in hardware self‑diagnosis detects internal circuit faults.
Application Scenarios Digital input spare part for ABB 800xA S800 I/O station. Widely used in petrochemical, power and chemical automation projects.
Performance Parameters Fast digital signal response. Independent channel LED status indication. Stable S800 bus data transmission performance.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. Signal isolation and level conversion assemblies. Back‑plane plug‑in connector and matched signal terminal base.
Structural Characteristics Standard S800 rack plug‑in module. Front side equipped with channel status LED indicators and matched external signal terminal unit. Rear side fitted with back‑plane I/O bus connector. Weight approximately 0.30 kg.
Working Principle Field 24 V DC switching signals access module through terminal base. Internal isolation circuit completes signal level conversion. Channel status data is encoded and uploaded to controller over S800 bus. Diagnosis circuit monitors module internal hardware condition continuously.
Installation Requirements Insert DSDI110AV1 3BSE018295R1 into corresponding I/O rack slot and lock fixing latch. Install matched signal terminal base and connect field digital wiring. Confirm back‑plane connector is fully engaged. Restore power supply, verify input status response of all channels.
Usage Notes Avoid over‑voltage signal entering input channels. Keep field signal wiring polarity correct. Hot‑plug operation under powered condition is prohibited.
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