Technical Specifications Multi‑channel analog input and analog output channels. Signal range 4‑20 mA. Back‑plane controller bus interface. Auxiliary power 24 V DC, typical power consumption 3.9 W. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Channel galvanic isolation design.
Functional Features Receives 4‑20 mA analog measurement signals from field transmitters. Converts analog signals into digital data and uploads to controller. Receives digital control value from controller and converts to 4‑20 mA analog output signal for field actuators. Front‑panel LED displays module running and fault status. Built‑in hardware self‑diagnosis detects input‑output loop abnormality and internal hardware faults.
Application Scenarios Analog I/O spare part for ABB Advant DCS system. Applied in petrochemical, power and chemical plant old‑site control cabinet maintenance.
Performance Parameters High‑precision analog signal sampling and conversion. Stable analog output driving capability. Reliable channel fault diagnosis performance.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. Analog‑digital conversion, signal isolation and driving assemblies. Back‑plane plug‑in connector and field signal terminals.
Structural Characteristics Standard rack plug‑in module. Front side fitted with field analog signal terminals and status LED indicators. Rear side equipped with back‑plane bus connector. Weight approximately 0.36 kg.
Working Principle Field analog current signals pass through isolation circuit and analog‑digital conversion unit, digital data is sent to controller via back‑plane bus. Diagnosis circuit continuously monitors each analog channel loop and module hardware state.
Installation Requirements Insert DASA110 into corresponding rack slot and lock fixing latch. Connect field instrument and actuator wiring to front‑end signal terminals. Ensure back‑plane connector is fully engaged. Restore power supply, calibrate analog channels and verify input‑output signal accuracy.
Usage Notes Avoid short‑circuit of analog output channels. Verify sampling accuracy and output driving performance after installation.
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