ZIV 7IRD-A - Physical Outputs; HMI Outputs (Control HMI)

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Chapter 7. Description of Operation of the Control Subsystem

M7IRDA2003I

7IRD-A/J/M: Distribution Protection & Control Terminal

7-10

7.2.3.c Physical Outputs

Physical Outputs are Output signals from the Logic and determined by the Output Connection

Process. The signals can be of two types: Physical Outputs from Contact Transducers (SF)

and Outputs from Measurement Transducers (mA).

7.2.3.d HMI Outputs (control HMI)

The signals called HMI Output are all those signals accessible from the various screens of the

Graphic Display:

 States of Objects

The States of the Objects represented are those states stored in the element called Single-

Wire Objects and that are determined by both Output Signals from the Logic and Physical

Inputs (EF) to the Control Subsystem. The State of the Objects is provided graphically through

the Single-Line Diagram represented in the display.

 Alarms

The Alarms represented on the corresponding screen of the Graphic Display are messages

determined by the Alarm Panel according to the signals that it receives. These are Outcome

signals from the Logic and are Physical Inputs to the Control Subsystem and Input Signals

received from Protection.

 Measurements

The Measurements that can be viewed on the corresponding screen of the Graphic Display are

those sent by Protection: the Measurements of the Input Transducers and the value of the

Counters (the Reclosure Counter received directly from Protection and the Output signal from

the Counter element).

 Contact Input State

These signals represented in the Digital Inputs display indicate the State (activated /

deactivated) of the Inputs to the Control Subsystem.

 Contact Output State

These signals represented in the Digital Outputs display indicate the State (activated /

deactivated) of the Physical Outputs from the Contact Transducers (SF) of the Control

Subsystem.

 State of the Protection LEDs

The corresponding screen will display the state (ON - OFF) of the LEDs associated with the

Protection Subsystem accessible through the Protection Input signals (EP).