RD320-OF

Serial RS232/RS422/RS485 to single mode fiber optic media converter



Why using fiber optic ?

Using fiber optic enables to use a higher communication bandwidth while offering a total immunity against EMI/RFI interferences and an increased security as well.

The optical fibre still offers other advantages : use without risk in an explosive environment, no EMC emission, no ground loops, immunity against lightning and high voltage environments, they are finally lighter, less cumbersome, inert and corrosion resistant ...

Plug & Play

The RD320-OF device features a self configuration mechanism based on a CPLD component freed you from the tiresome operation which consist in the serial parameters setup, product is "Plug & Play".

Security

RD320-OF features in standard a built-in system to control the fiber integrity, it reports automatically any failure with an error LED and also setup a relay contact (MOSFET) to activate any external safety device.






Technical chracteristics overview


Serial link

Optic fiber

3 in 1 interface : RS232, RS422 & RS485
Pluggable solderless screw terminal field
Speed up to 500 Kbps
Serial link parameter self configuration "Plug & Play"
RS232 signals : TxD, RxD, GND
RS422 signals : TxA, RxA, TxB, RxB, GND
RS485 signals: TRxA, TRxB, GND
Configurable polarization & terminating resistors (mini-switches) for RS422/RS485
Automatic RS485 line turn-around, software independent
Half-duplex & Full-duplex modes support
Serial protocols : The RD300-OF device supports any kind of communication protocols (Modbus, Unitelway, Profibus, DH+, ASCII or binary serial protocols ...)
15 KV ESD protection and HF filtering
Single mode optic fiber
9/125 µm fibers support
SC type connectors
Transmission up to 20 Km on a 9/125 µm fiber at 25°C
Wave lenght : 1310 nm
Power budget : 16 dB (typical)
Reliable communication without any error even in case of significant EMI/RFI interferences
Bi-directionnal transmission
Topologies : Point to point & simple ring
Infinite galvanic isolation through the optic fiber
Fiber breakdown self diagnostic, failure is reported on a LED and a relay contact (MOSFET) is activated

Power supply, signalling and other characteristics

+9VDC to +36VDC wide DC power range, screw-in terminal
Power consumption : 2.5W (maximum)
LED signalling for TxD & RxD on both copper and fiber optic side
Fiber breakdown self diagnostic, failure report on a LED and relay contact (MOSFET) activation
Dimensions & Weight : 107 mm (L) x 88 mm (W) x 25 mm (H), 260 g
Robust & compact metal case, CE industrial grade
Case and 35 mm Din Rail mounting



Point to Point topology


This configuration enables to control a single equipment installed in a very polluted or distant area. The optical line is totally insensitive to EMI/RFI perturbations.

Simple ring topology


This topology enables to build a simple ring whereas the master equipment is installed in the middle.

Reference to order:

RD320-OF Serial RS232/RS422/RS485 to single mode fiber optic media converter, +9VDC to +36VDC power supply, din rail mounting

 

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