Technical Specifications Part Number: 3BSE020512R1 Operating Supply Voltage: 24 VDC ±10% Number of Input Channels: 8 single‑ended unipolar input channels Input Signal Ranges: 0‑20 mA DC, 4‑20 mA DC Input Resistance: 250 Ω including built‑in PTC resistor A/D Resolution: 12‑bit Over‑voltage Short‑circuit Protection: Withstands maximum 30 VDC short‑circuit on field terminals HART Compatibility: Pass‑through support for HART signal Isolation: 8‑channel group‑wise galvanic isolation from ground Operating Temperature: 0 ℃ to +70 ℃ Storage Temperature: ‑40 ℃ to +85 ℃ Relative Humidity: 5%‑95%, non‑condensing Mounting Form: S800L rack plug‑in installation Protection Class: IP20 Certifications: CE
Functional Features Acquires 8‑channel 0‑20 mA / 4‑20 mA analog current signals from field transmitters. Built‑in PTC component provides 30 VDC short‑circuit over‑voltage protection for field input terminals. Supports HART signal pass‑through for HART transmitter loop. Group‑wise galvanic isolation between field channels and system ground. Front‑panel LED indicators display module power‑on, running and fault status. Detachable matched terminal unit simplifies field wiring and module replacement. Software‑based channel parameter configuration, no hardware jumper adjustment required. Full mechanical and electrical compatibility with S800L rack series.
Application Scenarios AC 800M DCS system general‑purpose analog current signal acquisition cabinet. Process industry non‑HART or HART pass‑through transmitter signal monitoring. Power plant, chemical factory automation control system spare‑part replacement project. S800 distributed I/O station analog signal measurement application.
Usage Notes Do not apply field terminal voltage exceeding 30 VDC protection limit. PTC component needs natural cooling recovery after short‑circuit fault occurs. Regularly clean cabinet internal dust to avoid golden‑finger and terminal contact failure. Complete channel parameter configuration via official DCS configuration software. Avoid installation location close to high‑power electromagnetic interference source. Implement lock‑out tag‑out safety procedure during module disassembly and replacement work.
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