MODEL277B-S

RS-485/422 to optic fiber converter, single-mode 20 km, 5VDC, SC/ST optional.

The Model277B allows the transparent transmission of the serial RS-485/422 port via a singlemode fiber optic cable, is perfect for connecting RTU devices to a host or SCADA controller. With the opto-isolation and robust housing, the Model277B is ideal for use in projects with special electromagnetic and immunity requirements. The kit includes an external 5VDC power supply and converter instruction manual.

Features:

• Extend RS-485/422 transmission up to 120Km with single-mode
• Transmit asynchronously, point to point, speed reach 120Kbps
• Plug-and-Play (hot-pluggable, data format auto-sensing & self-adjusting)
• 600W surge protection, 15KV ESD protection
• Power External 5VDC

Specification:

RS-485

• Standards: EIA RS-485, RS422 standard
• RS-422 signal: T+, T-, R+, R-, GND
• RS-485 signal: D+, D-, GND
• Working mode: Asynchronic, point to point or multi point, 2 wire half-duplex, 4 wire full duplex
• Baud rate: 300~500Kbps, auto test serial signal rate detect signal speed automatically, zero delay time
• Transfer distance: RS-485/422 side: 1.2Km (9600bps)
• Max number of drops: 128 nodes(RS-485/422)
• Port protection:
• 600W surge protection
• 15KV ESD protection

Fiber Optic

• Connectors: SC, FC or ST, optional
• Fiber optic cables:
• Single Mode: 8.3/125, 8.7/125, 9/125 or 10/125 um
• Muti-Mode: 50/125, 62.5/125 or 100/125 um
• Transmission:
• 20, 40, 60, 80, 100, 120km (SM)
• 2 km (MM) optional
• Wavelength: 850nm, 1310nm, 1550nm

Power

• Power input: Power External 5VDC
• Consumption: 120mA

Environment

• Operating temperature: -10°C to 60°C
• Storage temperature: -40°C to 85°C
• Humidity: 5% to 95% (no condensation)

Appearance

• Dimensions: 94.0 mm x 71.0 mm x 26.0 mm (power external)
• Material: Iron (shell)
• Color: White
• Weight: 230g (power external), 260g (power internal)

Manufacturer's warranty: 5 years

Approvals: FCC, CE, RoHS approvals

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