196
Serial communication
Chapter 12
Data communication
The fibre optic SPA/IEC port can be connected point-to-point, in a loop, or with a star coupler.
The incoming optical fibre is connected to the Rx receiver input and the outgoing optical fibre
to the Tx transmitter output. The module is identified with a number on the label on the module.
The electrical RS485 can be connected in multidrop with maximum 4 terminals.
1.7.2
Design, LON
The serial communication module for LON is placed in a slot at the rear of the Main processing
module. One of the following options is available for serial communication:
•
two plastic fibre cables; (Rx, Tx) or
•
two glass fibre cables; (Rx, Tx)
The type of connection is chosen when ordering the terminal.
The incoming optical fibre is connected to the Rx receiver input and the outgoing optical fibre
to the Tx transmitter output. The module is identified with a number on the label on the module.
1.7.3
Technical data
Table 206: Optical fibre connection requirements for SPA/IEC
Table 207: RS485 connection requirements for SPA/IEC
Note!
Pay special attention to the instructions concerning the handling, connection, etc. of the optical
fibre cables.
Note!
Pay special attention to the instructions concerning the handling, connection, etc. of the optical
fibre cables.
Glass fibre
Plastic fibre
Cable connector
ST connector
HFBR, Snap-in connector
Fibre diameter
62.5/125
μ
m
50/125
μ
m
1 mm
Max. cable length
1000 m
25 m
Cable connector
Phoenix, MSTB 2.5/6-ST-5.08 1757051
Cable dimension
SSTP according to EIA Standard RS485
Max. cable length
100 m
Summary of Contents for REL 501-C1 2.5
Page 1: ...Technical reference manual Line distance protection terminal REL 501 C1 2 5 ...
Page 2: ......
Page 26: ...14 Introduction to the technical reference manual Chapter 1 Introduction ...
Page 42: ...30 Technical data Chapter 2 General ...
Page 66: ...54 Blocking of signals during test BST Chapter 3 Common functions ...
Page 142: ...130 Time delayed overvoltage protection TOV Chapter 6 Voltage ...
Page 162: ...150 Autorecloser AR Chapter 9 Control ...
Page 174: ...162 Event function EV Chapter 10 Logic ...
Page 210: ...198 Serial communication Chapter 12 Data communication ...
Page 226: ...214 Serial communication modules SCM Chapter 13 Hardware modules ...
Page 230: ...218 Terminal diagrams Chapter 14 Diagrams Figure 87 REL 501 C1 with DC switch ...
Page 234: ...222 Terminal diagrams Chapter 14 Diagrams ...
Page 237: ......