Technical Specifications Power supplied by PLC back‑plane bus; Multi‑channel thermocouple inputs; Built‑in cold‑junction compensation Operating temperature:0℃~+60℃; Storage temperature:‑40℃~+85℃; Humidity:5‑95% non‑condensing Mounting:PLC rack plug‑in mounting
Functional Features Supports multiple thermocouple types. Automatic cold‑junction compensation. Sensor breakage detection. Input signal filtering. Front‑panel LED status and fault indicators.
Application Scenarios Thermocouple temperature acquisition for GE 90‑30 PLC systems. Furnace and high‑temperature equipment temperature monitoring. Spare replacement temperature module.
Performance Parameters Accurate cold‑junction compensation. Stable thermocouple‑signal conversion. Reliable sensor break‑age detection.
Material Composition Flame‑retardant plastic housing. Multilayer conformal coated PCB. Thermocouple signal conditioning circuits, cold‑junction compensation components, A/D chip, back‑plane connector and field terminals.
Structural Characteristics Standard 90‑30 rack plug‑in module. Rear back‑plane bus connector. Front‑panel thermocouple wiring terminals and LED indicators. Module locking latch.
Working Principle Thermocouple millivolt signals feed front terminals. Circuit completes cold‑junction compensation and A/D conversion. Digital temperature data transmits to PLC CPU via rack back‑plane bus.
Installation Requirements Power off PLC rack. Insert module into rack slot and lock latch. Connect thermocouple cables. Restore PLC power, select thermocouple type parameter and verify temperature readings.
Usage Notes Prohibit hot‑swap. Use matching thermocouple compensation cables. Anti‑static handling required.
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