Technical Specifications Multi‑channel analog signal input. Back‑plane system bus interface. Auxiliary working power 24 V DC. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Channel‑wise signal galvanic isolation and filtering circuit.
Functional Features Receives 4‑20 mA or voltage analog signals from field measuring instruments. Completes signal filtering and high‑precision analog‑digital conversion. Transmits digital measuring data to main controller via back‑plane bus. Front‑panel LED indicators display module running state and channel fault alarm. Built‑in hardware self‑diagnosis detects input loop breakage and internal circuit abnormality.
Application Scenarios Spare analog input module for ABB control rack. Widely applied in chemical plant and power plant process‑control signal acquisition cabinet maintenance.
Performance Parameters High‑precision analog‑digital conversion performance. Low‑temperature‑drift long‑term sampling accuracy. Reliable input loop fault detection capability.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. Multi‑channel sampling, conversion and isolation assemblies. Back‑plane plug‑in connector and field signal screw terminals.
Structural Characteristics Standard rack plug‑in module. Front side equipped with field analog signal terminals and status LED indicators. Rear side fitted with back‑plane system bus connector. Weight approximately 0.33 kg.
Working Principle Field analog signals enter NTAI05 front‑end terminals. After isolation and filtering processing, analog‑digital conversion is executed, digital measuring data is uploaded to main controller through back‑plane bus. Diagnosis circuit monitors each input loop working condition continuously.
Installation Requirements Cut off rack auxiliary power before replacement. Insert NTAI05 into corresponding rack slot and lock fixing latch. Connect field transmitter wiring to front‑end terminals. Ensure back‑plane connector is fully engaged. Restore power supply, perform channel calibration and compare sampling value with field instrument output.
Usage Notes Select correct signal type according to field instrument. Hot‑plug under powered state is prohibited. Complete channel calibration after module replacement.
There are no reviews yet.