Data On Rs485 Serial Communication Module Cable; Installing The Gps Antenna; Antenna Installation - ABB RELION 670 Series Installation Manual
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Also See for RELION 670 Series:
- Technical manual (1432 pages) ,
- Technical reference manual (1232 pages) ,
- Applications manual (944 pages)
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1MRK 514 026-UEN B
6.4.3
6.5
6.5.1
670 series 2.2 IEC
Installation manual
ExV is supplied by the Node at end of the Bus Segment
The specifications of the components are:
a) Ru
+ 5 V to Signal B
b) Rt
Signal B to Signal A
c) Rd
Signal A to GND
2.3.3
Bus power distribution
The end node in each Ph-segment applies 5 V bus excitation power to the Termination network via
the Excitation pair (ExV+ and GND) used in the Type 3 Physical layer specification.
Data on RS485 serial communication module cable
Type:
Twisted-pair S-STP (Screened – Screened Twisted Pair)
Shield:
Individual foil for each pair with overall copper braid
Length:
Maximum 1200 m (3000 ft) from one system earth to the next system earth
(includes length from platform point to system earth on both sides)
Temp:
According to application
Impedance:
120 W
Capacitance:
Less than or equal to 42 pF/m
Example:
Belden 9841,Alpha wire 6412, 6413
Installing the GPS antenna
Antenna installation
The antenna is mounted on a console for mounting on a horizontal or vertical flat
surface or on an antenna mast.
= 390 W, 0.25 W ±2.5%
= 220 W, 0.25 W ±2.5%
= 390 W, 0.25 W ±2.5%
Section 6
Connecting
SEMOD176342-280 v2
SEMOD53073-1 v1
M12267-6 v3
79
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