RS485/PROFIBUS LWL Ring-coupler

Sertifikaadid

  PTB 97 ATEX 1068 U
 IECEx PTB 11.0083U
  TUEV 99 ATEX 1404 X (Module)
 IECEx TUN 12.0024X
 CSA 2484303
 GOST R POCC DE.ME92.B02630
 GOSPROMNADZOR 11-02-0015-2012
 IEE 12.0200U

Ex kaitse liik

 II 2 G / I M2
Ex d e [ib] IIC Gb
Ex d e [ib] I Mb
Class I Zone 1 IIC
A/Ex d e [ib] IIC Gb
Fitting (17-1923-1122/0000):
 II (2) G / II (2) D
[Ex ib Gb] IIC
[Ex ib Db] IIIC
Optical waveguide, Transmitter (17-2114-0002):
 II 2 G / II 2 D
Ex ib op is IIC T4 Gb
Ex ib IIIC TX* °C Db
Optical waveguide, Receiver (17-2114-0003):
 II 2 G / II 2 D
Ex ib IIC T4 Gb
Ex ib IIIC TX* °C Db

Ümbritseva keskkonna temperatuur

Directive 2004/108/EG
Directive 94/9/EG

Kirjeldus

The RS485/PROFIBUS LWL Ring-coupler reroutes the PROFIBUS from copper conductors to optical waveguides. The LWL Ring-coupler is a passive bus participant. In plants, the LWL Ring-coupler allows the bridging of great distance with PROFIBUS without noice interference.

The electronics for the signal conversion are accomodated in the flameproof MODEX enclosure. Transmitter and receiver for the LWLcoupler are intrinsically safe headed. The intrinsically safe control transmitter and receiver of the electronic system guarantee that the transmitter rate does not go beyond maximum value limits.

Configuration

According to topology, it is possible to connect several items of equipment in a ring. A master (item of equipment) needs to be included in the ring. All the other items of equipment should be configurated as slaves. The master needs to be connected to the higher level (e. g. control unit).