1. Engineering Technology Division
Power Plant Construction and QA/QC
Section 5.5 – Human Machine-Interface

2. Communication between the operator, process and equipment.
Section 5.5 – Human-Machine Interface
Overview
Communication between the operator, process and equipment.
Early power plants, instrumentation was at the equipment.
Operators “toured” the facility to record information and perform safety checks.
Interface changes over time lead to a centralized control.
The centralization continues as technology improves.

3. Modern Distributed Control System
Section 5.5 – Human-Machine Interface
Modern Distributed Control System

4. Control Panels - Conventional
Section 5.5 – Human-Machine Interface
Control Panels - Conventional
Control Panels contain;
Recorders
Meters
Gages
Switches
Annunciators

5. Control Panels - Digital
Section 5.5 – Human-Machine Interface
Control Panels - Digital

6. Section 5.5 – Human-Machine Interface
Questions?