introduction to the basics of supervisory control and data acquisition systems.

1. AN INTRODUCTION TO
SUPERVISORY CONTROL
AND DATA ACQUISITION
Fundamentals and Implementation
SUBMITTED BY:
RISHABH
SRIVASTAVA
100105027
ELECTRONICS AND
INSTRUMENTATION.

2. DEFINITION
OF SCADA
“Supervisory control and data acquisition,
or SCADA, is the control technology that
enables
the operator of a controlled industrial
process or plant to obtain data from one
or more of its
distant facilities and send limited control
instructions to those facilities”

3. BASIC
COMPONENTS
OF SCADA.
Four basic components of SCADA:
• Sensors
• Remote telemetry units (RTUs).
• SCADA master units.
• The communications network

4. • BLOCK DIAGRAM FOR BASIC SCADA SYSTEM.

5. BASIC
FUNCTIONS
OF SCADA.
A SCADA system performs four
functions:
• 1. Data acquisition
• 2. Networked data communication
• 3. Data presentation
• 4. Control
• 5. Human Machine Interface.(HMI)

6. HUMANMACHINE
INTERFACE
(HMI)
• What is HMI?
• Role of HMI.
• What Does HMI Comprise?

7. COMPARISION
BETWEEN
DCS AND SCADA.
FEATURES
DCS
SCADA
DATA
TRANSMISSON
ONE WAY
TRANSMISSON
TWO WAY
TRANSMISSON
CONTROL
FULL ELABOTAED,
GENERALLY FULL
CONTROL
LIMITED OR
SIMPLE CONTROL
INTERVENTION
LIMITED
INTERVENTION
FREQUENT AND
IMMEDIATE
INTERVENTIONS

8. DIFFERENT USES OF SCADA SYSTEMS:
Mass transit: regulate electricity to subways, trams and trolley buses; to
automate traffic signals for rail systems; to track and locate trains and
buses; and to control railroad crossing gates.
Manufacturing: manage parts inventories for just-in-time manufacturing,
regulate industrial automation and robots, and monitor process and
quality control.

9. DIFFERENT USES OF SCADA SYSTEMS(CONTD.):
Electric power generation, transmission and distribution: Electric utilities detect current
flow and line voltage, to monitor the operation of circuit breakers, and to take sections of
the power grid online or offline.
Buildings, facilities and environments: Facility managers use SCADA to control HVAC,
refrigeration units, lighting and entry systems.