Technical Specifications Back‑plane bus power supply; Galvanically isolated 4‑20mA analog input channels Operating temperature:0℃~+60℃; Storage temperature:‑40℃~+85℃; Humidity:5‑95% non‑condensing Mounting:rack plug‑in mounting
Functional Features Multi‑channel isolated current signal acquisition. On‑board signal filtering. Open‑circuit channel detection. Front‑panel LED shows power, channel and fault status.
Application Scenarios 4‑20mA transmitter signal acquisition for GE DCS/PLC racks. Process‑industry analog measurement points. Spare replacement module for system maintenance.
Performance Parameters High‑accuracy A/D conversion. Good anti‑interference performance for field analog signals. Fast open‑circuit fault detection.
Material Composition Flame‑retardant plastic housing. Multilayer conformal coated PCB. Analog isolation, A/D conversion circuits, back‑plane plug‑in connector and field terminals.
Structural Characteristics Standard rack plug‑in form factor. Rear back‑plane bus connector. Front‑panel field signal terminals and LED indicator group. Metal locking screw.
Working Principle Field 4‑20mA current signals feed front terminals. Signals pass isolation and filtering, then A/D conversion. Digital measurement data sends to controller CPU over rack back‑plane bus.
Installation Requirements Cut rack power before installation. Insert module to designated rack slot and tighten locking screw. Wire field transmitters. Restore rack power, set channel range parameters and verify measurement values.
Usage Notes Do not perform hot‑plug. Confirm signal wiring polarity. Comply with anti‑static handling procedures.
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