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4. 1000Base-LX module (LC plug)
A pair of optic fiber cables is required. The 1000Base-LX module can be used for the GR-TIEMS
operation or the LAN communication. Use SM mode fiber when long distance is required.
Figure 5.3-7 1000Base-LX module
5. RS485 module
RS485 module has a PCB connector. The module should be connected with a shielded-twisted-
pair cable; it is used for the communication of the IEC60870-5-103. The terminal arrangement
and references are shown below. The cable sheath should be connected with the frame ground
(FG) in the IED case. For the use of the a shielded-twisted-pair cable, the user should note that
the total length should be less than 1200 meter (0.75 miles); the terminal resistor (150 ohms)
should be connected when any connector is not connected. For setting the parameters, see
Chapter
Communication protocol: RS485 communication
.
Figure 5.3-8 RS485 connection and module
a. View from connector edge
IED