DCS Displays Presentation PDF

PRESENTATION ON DCS DISPLAYS ASSOCIATE PROFESSOR DEPARTMENT OF ELECTRONICS ENGG. THIS PRESENTATION COVERS: Introduction to DCS Displays Standard Displays a. Group Display b. Overview Display c. Detail Display Trend Display Graphic Display  INTRODUCTION D...

PRESENTATION ON DCS DISPLAYS ASSOCIATE PROFESSOR DEPARTMENT OF ELECTRONICS ENGG. THIS PRESENTATION COVERS: Introduction to DCS Displays Standard Displays a. Group Display b. Overview Display c. Detail Display Trend Display Graphic Display  INTRODUCTION DCS (Distributed Control System)- DCS is a dynamic control system, in which controllers are distributed throughout the entire system and are connected by a network INTRODUCTION TO DCS DISPLAYS Displays which shows an overview of the overall operating situation of the plant. These displays shall incorporate status, alarms and data. Displays that allows the operator to control the plant. Operational reports on plant performance, maintenance activities and operational planning.  TYPES OF DCS DISPLAY The Output Of Process Is Being Shown At Different Types Of Display: Standard Display Group Display Overview Display Detail Display Trend Display Graphics Display STANDARD DISPLAY These displays are based on the researches or experiences of plant operators. They are predefined form of alarms points of control loops and controller groups of plant area etc. It consist of symbolic and alphanumeric information structured in standard formats.  TYPES OF STANDARD DISPLAYS Group Display Overview Display Detail Display GROUP DISPLAY The group display shows the operating parameters of group of control loops such as 4, 8, 12 or 16 control loops are arranged in a row so that they look like the faces of instruments on an instrument panel. Each control loop is represented by a rectangle with bar graphs to indicate the values of the process variable and the output signal. Operator can select a loop, mode or set point. This display enables us to associate alarm priority and sequential operation arrangements. GROUP DISPLAY OVERVIEW DISPLAY The overview display shows the bar essentials of a number of groups, each group in a separate rectangle. The set point is shown as a straight line reference. Deviation of process variable from set point appears as a vertical bar. Digital conditions can also be displayed on an overview display. OVERVIEW DISPLAY DETAIL DISPLAY The detail display is specific to a single loop or control function. More than a group display, it includes additional information defining constants, limits, and other characteristics of the function. The sources of the signals coming to it are listed on the screen. DETAIL DISPLAY  DISPLAYS CATEGORIZED ON REPRESENTATION Trend Display Graphic Display TREND DISPLAY Trend displays are the DCS equivalents of chart records. They are a profile of values of a process variable showing changes that have taken place over a period of time. The trend display information is valuable to the operator to observe the recent pattern of operating history. TREND DISPLAY TREND DISPLAY GRAPHIC DISPLAY Graphic display capability allows a picture to be drawn on the screen so that the operator can look at a portion of the process more realistically than by watching a row of bar graph. Process and control information is included in the picture. It can be interactive, dynamically changes as real-time information changes. Some graphic displays are also capable of showing movements. GRAPHIC DISPLAY