ABB Relion 670 Series Applications Manual page 301

1MRK 511 407-UUS Rev. J
19.4 LON communication protocol
19.4.1 Application
IED
IEC05000663 V2 EN-US
Figure 112: 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 31:
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.
Phasor measurement unit RES670
Application manual
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)
© Copyright 2017 Hitachi Power Grids. All rights reserved
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)
Section 19
Station communication
IP14420-1 v1
IP14863-1 v1
M14804-3 v6
M14804-32 v2
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