To the basic advantages to the LWL-technique opposite wiring with copper conductor belongs among other things:
|• Interference protection||
* beam-waveguides are insensitive also without shielding opposite electromagnetic fields
* No "antenna effect" of the conductor
|• potential separation||
* beam-waveguides are insulators (ca.110kV/m).
* No current compensations due to various earth-potentials.
|• Lightning protecton||* beam-waveguides are insulators|
|• Ex-protection||* No spark genesis at separation or cable disruption.|
|• Bugging protection||* No crosstalk.|
|• Weight||* Low cable mesures.|
fiber (without coat) has a core and an outside skin which one another refraktionindex for the light. Around the fiber is because of one possible inductive disturbance a PVC or PE coat which protects the fiber from external interferences.
|glass fiber||synthetic material fiber|
|dk = diameter core||62,5µm||980µm|
|dm = diameter outsideskin||125µm||1000µm|
There are two different models for the general application:
• LWL-Adapter für Kunststoffaser-Leitungen
(LWL-Adapter for synthetic material fiber lines)
• LWL-Adapter für Glasfaser-Leitungen
(LWL-Adapter for glass fiber lines)
The complete electronics are integrated in an industrial metal casing (which is prepared for the mounting of a switchgear cubicle or a switchboard). The device can be fastened directly to the
Connection, mechanics, pin seizure and electrical data meet the respective iBx specification.
However, the LWL-System can individually be used by other userspecific hook-ups (RS485 4-wire interface).
The entrance and exit represent a RS485 interface on the wired side of the LWL-Adapter. One of these interfaces of usual connection is needed therefore:
To use is a cable of the type 2 x 2 x 0.25 mm2 in pairs with shield.
This cable is attached by screwterminals at the LWL-Adapter.
One in this case distinguishes between LWL-Adapter for synthetic material fiber and LWL-Adapter für glass fiber:
Important at both systems:
Should the cable get canned at own is open good polished fraying respect
• LWL-Adapter for synthetic material fiber:
|Cable type:||Duplex Typ POF (980µm/1000µm) coat PE or PVC|
DST-MV (Duplex-plug with locking system) [HP-Typ HFBR4516]
DST-OV (Duplex-plugr without locking system) [HP-Typ HFBR4506]
Two cable fibers are summarized in a plug respectively
LWL-Adapter for glass fiber:
|Cable type:||only duplex Typ 6F 62,5 (62,5µm/125µm) coat PE or PVC (please do not use cable type GF 50, because the transmitter and receiver are designed for a fiber cross-section of 62.5 µm/125µm. A cross section of 50µm/100µm would bringing heavy loss of quality with it.)|
|Plug type:||F-SMA terminal with screwconnectors for every cable fiber one connector|
|power supply:||24V/DC +/- 20%|
|power draw:||1,5 power power VA|
2 x screw terminals for the voltage connection
4 x screw terminal for differential transmission (TX & RX)
2 x socket, for F-SMA LWL connector
|max. Length between two adapters:||
glass fiber = ca. 2,5 km
thetic material fiber = ca.145 m
|working temperature:||5 to 55 Grad Celsius|
|case:||powder coated metal case with mounting flange|
|dimensions:||75 x 65 x 30 mm|