Lon Communication Protocol - ABB RELION 670 SERIES Applications Manual

Section 21
Station communication
21.3
21.3.1
868

LON communication protocol

Application
Station HSI
MicroSCADA
IED
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
Cable connector
Cable diameter
Max. cable length
Wavelength
Transmitted power
Receiver sensitivity
Gateway
Star coupler
RER 111
IED IED
Glass fibre
ST-connector
62.5/125 m
1000 m
820-900 nm
-13 dBm (HFBR-1414)
-24 dBm (HFBR-2412)
1MRK 506 369-UUS -
Control Center
IEC05000663-1-en.vsd
Plastic fibre
snap-in connector
1 mm
10 m
660 nm
-13 dBm (HFBR-1521)
-20 dBm (HFBR-2521)
Line distance protection REL670 2.2 ANSI
Application manual