ABB RET670 - LON Communication Protocol

4.4 LON communication protocol
4.4.1 Application
Control Center
IED IEDIED
Gateway
Star coupler
RER 111
Station HSI
MicroSCADA
IEC05000663-1-en.vsd
IEC05000663 V2 EN
Figure 322: 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 in the 670 series through the LON bus from the
operator’s workplace, from the control center and also from other IEDs via bay-to-bay
horizontal communication.
The fibre optic LON bus is implemented using either glass core or plastic core fibre
optic cables.
Table 243: 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)
1MRK504116-UUS C Section 4
Station communication
829
Application manual