Technical Specifications Module Type: RTD Temperature Analog Input Module Channel Quantity: 8 RTD input channels Sensor Type: Supports Pt100, Pt1000 standard RTD sensors Wiring Mode: Supports 2‑wire, 3‑wire and 4‑wire RTD connection Communication Interface: Redundant I/A fieldbus Operating Power: 24 VDC Operating Temperature: 0 °C to +60 °C Storage Temperature: ‑40 °C to +85 °C Relative Humidity: 5%‑95%, non‑condensing Mounting: DIN‑rail baseplate installation Certifications: CE industrial DCS I/O module compliance
Functional Features Multi‑channel RTD temperature signal acquisition for field resistance temperature detectors. Supports multiple RTD sensor types and different field wiring modes. Channel‑by‑channel galvanic isolation to suppress common‑mode interference. Built‑in sensor open‑circuit and short‑circuit fault diagnosis function. Hot‑swappable module structure, supports on‑site module replacement without field wiring disconnection.
Application Scenarios Applied in petrochemical, chemical, power and metallurgy DCS control projects. Collects temperature signals of reactor, pipeline and heating furnace through RTD sensors, realizes process temperature monitoring and closed‑loop control.
Structural Characteristics Compact 200‑series modular housing for baseplate mounting. Gold‑plated bottom connector for electrical connection with DIN‑rail baseplate. Front‑panel LED status lights display power, communication and channel fault alarm status. Matches dedicated termination assembly for field RTD sensor wiring conversion.
Working Principle Field RTD resistance signal is transmitted to FBM203 module through termination assembly. Internal circuit measures resistance value of RTD sensor, converts resistance variation into corresponding temperature value. Processed temperature data is sent to DCS field control processor via redundant fieldbus, meanwhile channel fault status information is uploaded.
Installation Requirements Install supporting baseplate on standard 35 mm DIN‑rail inside control cabinet. Insert FBM203 module onto baseplate and lock mechanical buckle. Connect field RTD sensor wiring to matched termination assembly terminals. Complete redundant fieldbus wiring. Configure RTD sensor type and wiring mode in DCS configuration software.
Usage Notes Select correct wiring mode according to on‑site RTD sensor physical connection.
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