ABB Relion 670 series - LON Communication Protocol

21.3 LON communication protocol
21.3.1 Application
Control Center
IED IEDIED
Gateway
Star coupler
RER 111
Station HSI
MicroSCADA
IEC05000663-1-en.vsd
IEC05000663 V2 EN
Figure 408: Example of LON communication structure for a substation automation
system
An optical network can be used within the substation automation system. This enables
communication with the IEDs through the LON bus from the operator’s workplace, from
the control center and also from other IEDs via bay-to-bay horizontal communication. For
LON communication an SLM card should be ordered for the IEDs.
The fibre optic LON bus is implemented using either glass core or plastic core fibre optic
cables.
Table 59: Specification of the fibre optic connectors
Glass fibre Plastic fibre
Cable connector ST-connector snap-in connector
Cable diameter 62.5/125 m 1 mm
Max. cable length 1000 m 10 m
Wavelength 820-900 nm 660 nm
Transmitted power -13 dBm (HFBR-1414) -13 dBm (HFBR-1521)
Receiver sensitivity -24 dBm (HFBR-2412) -20 dBm (HFBR-2521)
Section 21 1MRK 506 369-UUS -
Station communication
868 Line distance protection REL670 2.2 ANSI
Application manual