ABB Relion 670 Series Applications Manual page 444

Section 17
Station communication
17.4 LON communication protocol
17.4.1 Application
IED
IEC05000663 V2 EN-US
Figure 226: 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 fiber optic LON bus is implemented using either glass core or plastic core fiber optic cables.
Table 59:
Cable connector
Cable diameter
Max. cable length
Wavelength
Transmitted power
Receiver sensitivity
The LON Protocol
The LON protocol is specified in the LonTalkProtocol Specification Version 3 from Echelon Corporation.
This protocol is designed for communication in control networks and is a peer-to-peer protocol where all
the devices connected to the network can communicate with each other directly. For more information of
the bay-to-bay communication, refer to the section Multiple command function.
438
Station HSI
MicroSCADA
Star coupler
RER 111
IED
Specification of the fiber optic connectors
Glass fiber
ST-connector
62.5/125 m
1000 m
820-900 nm
-13 dBm (HFBR-1414)
-24 dBm (HFBR-2412)
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Control Center
Gateway
IED
IEC05000663-1-en.vsd
Plastic fiber
snap-in connector
1 mm
10 m
660 nm
-13 dBm (HFBR-1521)
-20 dBm (HFBR-2521)
1MRK 505 370-UUS Rev. K
IP14420-1 v1
IP14863-1 v1
M14804-3 v6
M14804-32 v2
Busbar protection REB670
Application manual