Technical Specifications Multi‑channel isolated RS‑485 serial interface. Auxiliary power supply 24 V DC, typical power consumption 3.7 W. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Serial channel galvanic isolation 1500 V AC. Module surface IP20. Meets industrial serial communication standards.
Functional Features Collects serial event and alarm message from field intelligent instruments. Provides high‑precision time‑stamping for each event record. Front‑panel LED indicators reflect channel communication and fault status. Supports event data uploading through rack back‑plane bus. Built‑in serial communication error detection function.
Application Scenarios Applied for event and alarm data collection of power plant, chemical industry automation field devices. Used for connecting protection relays and intelligent transmitters with serial output. Suitable for project construction and spare‑part replacement.
Performance Parameters Serial baud rate supports up to 115.2 kbaud. Time‑stamping precision reaches millisecond‑level. Communication error detection identifies frame error and link disconnection. LED feeds back channel running state in real‑time.
Material Composition Glass‑fiber epoxy printed circuit board. Serial processing chip, optocoupler isolation components. Reinforced plastic module housing. Screw‑type serial signal terminals.
Structural Characteristics Rack‑mount plug‑in module structure. Front panel arranges LED indicators for each serial channel. Rear side connects rack back‑plane bus. Module width 25 mm, height 130 mm, depth 120 mm.
Working Principle After power‑on, module completes hardware self‑check and serial port initialization. It receives serial event message from field equipment via RS‑485 channel. Internal circuit adds high‑precision time‑stamp to each event data. Processed event records are transmitted to controller through back‑plane bus. Diagnosis circuit monitors serial link quality continuously.
Installation Requirements Insert module into designated rack slot and tighten locking screw. Connect 24 V DC auxiliary power supply. Complete field serial cable wiring according to engineering drawing.
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