Control Systems

Control Systems:

AC Input : The, ac input modules that are commonly available work with 24, 48, 110 and 220 V. It …


Basis of PLC Programming : 1.Processor Memory Organisation:The term processor memory organization refers to how certain areas of memory in …


Cascade Control : Cascade Control with Digital Controllers: A simplified system to control the temperature of a process employing a gas burner …


Choice of Electronic Signal Transmission : The range of air pressure used for Signal Transmission in pneumatic system is limited …


DC Inputs : The, dc inputs modules commonly available will work with 5, 12, 24 and 48 volts. The DC Inputs …


DCS System : A DCS System is preferred over a central computer system for the following reasons. Central Computer System (CCS) …


Digital Process Control : A digital process Control Systems functionally needs to operate in much the same way as a conventional …


Direct Digital Control : Developments in digital electronics have led to many industrial processes being computer controlled. The first system …


Distributed Control System : Distributed Control System – Since the beginning of process control in late 1970s, it has made …


Master Control : Master control can be considered the emergency stop switches. An emergency stop switch typically is a big …


Microprocessor Based DCS : Microprocessor Based DCS – Modern plants nowadays are very complex, large scale systems with a very …


PLC Applications : The PLC Applications takes a certain amount of time to react to changes. The total response time of …


PLC Basic Process : A PLC Basic Process is basically made up of the following sections, each of which has …


PLC Components : A PLC is a solid state device designed to perform logic functions previously accomplished by electro-magnetic relays. …


PLC Definition : (Programmable Logic Controller or Program­mable Controller): PLC Definition – Programmable Logic Controller (PLC) or commonly simply called a …


PLC Hardware : PLC hardware falls into the following physical configuration: 1. Fixed Input/ Output (I/O) and 2. Modular I/O. 1.Fixed 1/0 PLCs A …


PLC Hardware Components : PLC Hardware Components – The input and output interface modules consists of an I/0 rack and …


PLC Operation : To understand the PLC Operation, consider the simple process shown in Fig. 21.63 In this process a …


PLC Programming Languages : The term PLC programming languages refers to the method by which the user communicates information to …


PLC Register : Let us consider a simple example and compare the ladder diagram with its real …


PLC Structure : The PLC Structure mainly consists of a CPU, memory areas, and appropriate circuits to receive input/output data …


PLC System Operation : A PLC System Operation works by continually scanning a program. This scan cycle can be considered …


Relays Definition : The main purpose of a PLC is to replace real world relays. A Relays Definition is basically an …


Symbol Counter : Symbol Counter – A counter is a simple device used for counting. There are different types of …


TDC 3000 Architecture : 1. Hiway Based Distributed Control: The building block concept of TDC 3000 Architecture Control Systems design, with distributed …


Temperature Controls : Temperature Controls using an Analog Electronic Controller: A Temperature Control Systems scheme using an Analog Electronic Controller of Fig. 21.14 is as …


Timer : Timer is an instruction that waits a set amount of time before doing something. The different kinds of …