ZIV 7IRD-A, Инструкция по эксплуатации

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Chapter 7. Description of Operation of the Control Subsystem
7-7
M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020

Single-Line Diagram (Single-Wire Objects)
The Single-Line Diagram is the general graphic representation of the installation Protected by
the unit. The Single-Line Diagram contains all the data associated with each of the Single-
Wire Objects , parts of the installation, determined by the Logic and associated with it. The
information that each of these objects contains has to do with Input Signals (State of the Single-
Wire Objects) and orders associated with each object sent from the Graphic HMI.

Input Measurement Transducer
The Transducer is defined as an interface element between an External Direct Current
Intensity Signal and the Control Subsystem. The Configuration determines both the unit of
measurement and the conversion constant settings and they can be modified from the
Alphanumeric Display in
Control mode, General Settings modification menu.

Output Measurement Transducer
Elements associated with the Control Subsystem that provides Analog Output Signals by
means of direct current proportionate to the measurements made by the Control Subsystem.
Associated with these elements are the Input Signals, the Output Signals and the Connecting
Processes and Signal Tagging. The latter are of four types: Connecting Input Signals to be dealt
with by the Logic (
Input Connection Process ), Connecting Output Signals from the Logic to be
sent to the various elements of the unit ( Output Connection Process ), Signal Tagging to be
sent to the Central Unit ( Output Tagging ) and Tagging of Signals that arrive from the Central
Unit ( Input Tagging ) to be dealt with by the Logic.
7.2.2 Inputting Data to the Control Unit
Based on the data input sources, the signals that get to the Control Subsystem can be classified
in the following categories:
Signals through Communications , Inputs from the Protection
Subsystem , Physical Inputs and HMI Inputs .
7.2.2.a Inputs through Communications
The Inputs that arrive through Communications go through the software process called Input
Tagging , which decodes the PROCOME / DNP3 Communications Protocol and classifies the
Signals as Output Writing Signals ( ES ) and Simple Orders ( OS ). The Simple Orders can be
Panel Orders ( OC ), Remote Control Orders ( OT ) or Automatism Orders ( OA ).

Writing Signals and Simple Orders
An Output Writing Signal , through Communications, permits modifying the state of an Output
or indication in the Graphic Display; for example, the indication of the presence of voltage in
busbars.
Panel Orders are orders generated through the console of the Central Unit. Remote
Control Orders are orders that arrive through the Central Unit from the SCADA. Automatism
Orders are orders generated by one or more of the automatisms residing in the Central Unit.