Technical Specifications Mixed digital input and transistor digital output channels. Input rated 24 V DC, output rated 24 V DC. Back‑plane PLC system bus interface. Auxiliary power 24 V DC, typical power consumption 3.1 W. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Group‑wise signal galvanic isolation.
Functional Features Acquires on‑off status of field 24 V DC digital signals and transmits status data to PLC controller via back‑plane bus. Receives control logic commands and outputs transistor switching signals to field loads. Front‑panel LED indicators display real‑time status for each input and output channel. Built‑in hardware self‑diagnosis detects output over‑current and internal circuit faults.
Application Scenarios I/O spare part for ABB PLC control rack. Widely used in factory automation production line and mechanical equipment control system maintenance.
Performance Parameters Fast digital signal sampling response. Stable transistor output driving capacity. Reliable bus signal communication performance.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. Signal isolation, input sampling and output driving assemblies. Back‑plane plug‑in connector and field signal screw terminals.
Structural Characteristics Standard PLC rack plug‑in module. Front side equipped with field signal terminals and channel status LED indicators. Rear side fitted with back‑plane bus connector. Weight approximately 0.30 kg.
Working Principle Controller sends logic commands to trigger transistor switch action, output switching signals to field actuators.
Installation Requirements Insert DX581‑S into target PLC rack slot and lock fixing latch. Connect field input‑output wiring to front‑end terminals. Restore power supply, verify input signal response and output channel driving performance.
Usage Notes Do not exceed rated load current of transistor output channels. Prevent over‑voltage surge from damaging signal channels. Execute full‑channel function test after module replacement.
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