Functions Of The Pu4 Module; Overview - Siemens SWT 3000 Equipment Manual

Processing Unit Module

7.1 Functions of the PU4 module

7.1 Functions of the PU4 module

Overview

7.1.1
The Processing Unit PU4 is the central control module of the SWT 3000 unit.
The protection commands are received via an interface module IFC-D or IFC-P and/or an EN100 module.
At the transmit side, PU4 converts protection commands or commands at digital transmission lines into one
of the following cases:
•
Tones of a defined frequency
•
A digital code in case of digital transmission
If the PU4 is housed in a stand-alone SWT 3000 unit, the commands are transmitted to the remote station by:
•
analog transmission via CLE and/or
•
digital transmission via the Digital Line Interfaces (LID) and/or
•
digital transmission via fiber-optic module (FOM)
It is also possible to transmit commands of a stand-alone SWT 3000 unit via a PowerLink PLC system by:
•
connecting the CLE with a VFx- Interface of the PowerLink or
•
a fiber-optic connection with FOM modules in SWT 3000 and PowerLink
The PU4 of an integrated (i)SWT 3000 unit in a PowerLink PLC system is processing the commands via the CSPi
for transmission via the high voltage line of the PLC link. Optionally a digital transmission via the LID- Interface
is possible with additional digital transmission lines, e.g. for a secondary transmission path.
308 Smart Communication, SWT 3000 Teleprotection, Equipment Manual
C53000-G6040-C605-1, Edition 03.2020