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We have the largest collection of Industrial Control Systems articles like industrial automation, Distributed Control Systems (DCS).

4-20 mA Loop Splitter

S Bharadwaj Reddy
4-20 mA Loop Splitter Problems with Current Loop Loads in Series Not so good:  A single 4-20 mA loop from a sensor is connector to a panel meter, a external...

PID Controller Loop Tuning Tips

S Bharadwaj Reddy
PID CONTROLLER TUNING If the controller is withdrawn from the control panel face, further adjustments are available which are used to tunethe controller to the process. When a control loop is...

Interconnection between PLC, MCC, LCP & Pumps – Video

S Bharadwaj Reddy
This video shows us the relation between Programmable Logic Controller (PLC), motor control center (MCC), Local Control Panel (LCP) for controlling a Pump or Motor. PLC Pump Control Video MCC : Motor...

What is Wellhead Control Panel ?

S Bharadwaj Reddy
It is very common in the oil & gas plant to control its oil or gas well through a wellhead control panel (usually called WHCP). Each well is always equipped...

What is High Integrity Pressure Protection System ?

S Bharadwaj Reddy
A High Integrity Pressure Protection System (HIPPS) is a Safety Instrumented System (SIS) designed to prevent an unsafe condition caused by pressure arising (e.g. due to separator outlet blocked in...

How to Avoid Bad Grounds ?

S Bharadwaj Reddy
Earthing of electrical systems is required for a number of reasons, principally to ensure the safety of people near the system and to prevent damage to the system itself in...

How to Select the Right Type of Controller

S Bharadwaj Reddy
Distinguishing Characteristics  P-only Accelerates the response of controlled process Produces offset except for integrating (1/s) processes PI Eliminates offset Usually higher maximum deviations than P-only Sluggish, long oscillating responses Increased...

How Process Control Loop Works

S Bharadwaj Reddy
A typical process control system is shown in Figure. Assume the physical variable to be controlled is the temperature. Basically Industrial process control loop consists of sensors, transmitters, Control systems (PLC/DCS),...

ON-OFF Controller Principle

S Bharadwaj Reddy
On-Off control is the simplest form of feedback control. An on-off controller simply drives the manipulated variable from fully closed to fully open depending on the position of the controlled...

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