Data On Rs485 Serial Communication Module Cable; Installing The Gps Antenna; Antenna Installation - ABB RET670 Installation And Commissioning Manual

Section 5
Installing the IED
5.6.3
5.7
5.7.1
70
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%
Installation and commissioning manual
1MRK 504 088-UEN C