Description
Technical Specifications
- Serial Interface: RS-232 / RS-422 / RS-485 software switchable, terminal block wiring (suffix T)
- Fiber Type: Multimode duplex fiber (suffix M)
- Fiber Connector: ST type industrial fiber port (suffix ST)
- Galvanic Isolation: 2kV optical isolation between serial side and fiber transmission side
- Supply Power Input: 12–48V DC wide range industrial power supply
- Max Fiber Transmission Distance: 2km multimode fiber cable
- Serial Baud Rate Support: 300bps ~ 921.6kbps full industrial serial speed range
Functional Features
- Hardware switch selectable RS232/422/485 serial electrical interface mode
- 2kV galvanic isolation eliminates ground loop damage to serial communication equipment
- Duplex multimode fiber full-duplex bidirectional serial data transmission
- Built-in terminal block serial wiring interface simplifies field sensor wiring without adapter cables
- Power loss relay contact alarm output for remote equipment monitoring
Performance Parameters
- Operating temperature range: -40°C ~ +75°C wide industrial temperature grade
- IP housing grade: IP30 metal casing dust protection
- EMC compliance: IEC 61000-6-2 heavy industrial surge and ESD protection
- ESD withstand: ±15kV air discharge serial port static protection
- Surge withstand: ±2kV power line transient surge protection
- DIN rail mounting vibration resistance: 10–150Hz 20m/s² continuous vibration
Material Composition
- Main housing: Cold rolled steel metal casing with electrostatic anti-rust coating
- Internal isolation circuit: High voltage optocoupler isolation barrier PCB
- Fiber transceiver module: Industrial multimode optical transmit/receive chipset
- Serial terminal block: Copper alloy screw clamp terminals with anti-loosening springs
- Power input terminal: Wide voltage DC power screw terminal block
Structural Characteristics
- Compact horizontal DIN rail 35mm mounting form factor
- Left side ST duplex fiber port, right side serial + power terminal block layout
- Front panel LED indicators: Power, transmit data, receive data, fault alarm
- Integrated metal mounting bracket for DIN rail or wall fixed dual installation mode
Working Principle
Electrical serial signal from field RS485 sensor enters isolated front-end circuit; electrical signal converted to modulated light signal via multimode fiber transmitter chip; duplex fiber transmits light signal bidirectionally to remote matching fiber converter unit; remote receiver converts optical signal back to standard RS232/422/485 electrical serial signal for PLC/HMI equipment reception; 2kV optocoupler isolation blocks high potential ground loop voltage between two site equipment earth potentials.
Advantage Highlights
- -40°C to +75°C wide temperature operation compatible with outdoor unheated control cabinets
- ST industrial fiber connector delivers superior vibration resistance compared to plastic LC connectors
- Terminal block T suffix eliminates serial DB9 adapter cable field wiring cost
- Full industrial ESD and surge protection withstands substation and heavy machinery electromagnetic noise
- Wide 12–48V DC power input compatible with 24V control power and 48V battery backup power systems
Applicable Industries
Substation remote Modbus RTU communication, oil & gas field sensor data transmission, railway trackside serial equipment, mining underground sensor communication, factory long-distance conveyor serial control, wind turbine remote monitoring systems
Installation Requirements
- Mount unit on standard 35mm DIN rail inside metal shielded control cabinet
- Multimode ST fiber cable bend radius maintained above 12 times cable outer diameter
- Serial terminal block wiring use shielded twisted pair cable, shield grounded at converter side only
- Power supply circuit install 1A slow-blow fuse short-circuit protection
- Install matching ICF-1280I converter pair at both transmission endpoints for bidirectional communication
Operation & Maintenance Precautions
- Keep ST fiber port protective dust cap installed when fiber cable disconnected to avoid optical chip contamination
- Do not apply serial signal voltage exceeding ±12V DC to terminal block pins
- Annual power loss alarm function test to verify remote equipment failure notification performance
- Avoid mounting unit adjacent to high-power inverter or motor drive modules with strong radiated EMI
- Metal housing must connect to cabinet protective earth bar for full surge protection performance
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