The fibre optic LON bus is implemented using either glass core or plastic core fibre
optic cables.
Table 14: 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)
7.1.2 The LON Protocol
M14804-32 v2
The LON protocol is specified in the LonT
alkProtocol Specification V
ersion 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.
7.1.3 Hardware and software modules
M14804-35 v4
The hardware needed for applying LON communication depends on the
application, but one very central unit needed is the LON Star Coupler and optical
fibres connecting the star coupler to the IEDs. To interface the IEDs from the
MicroSCADA with Classic Monitor, application library LIB520 is required.
The HV Control 670 software module is included in the LIB520 high-voltage
process package, which is a part of the Application Software Library in
MicroSCADA applications.
The HV Control 670 software module is used for control functions in the IEDs.
The module contains a process picture, dialogues and a tool to generate a process
database for the control application in MicroSCADA.
When using MicroSCADA Monitor Pro instead of the Classic Monitor, SA LIB is
used together with 670 series Object Type files.
The HV Control 670 software module and 670 series Object Type
files are used with both 650 and 670 series IEDs.
Use the LON Network Tool (LNT) to set the LON communication. This is a
software tool applied as one node on the LON bus. To communicate via LON, the
IEDs need to know
Section 7 1MRK 505 378-UEN A
Establishing connection and verifying the LON communication
68 Line differential protection RED670 2.2 IEC
Commissioning manual
To Next Page
Loading...
Need help?
General
