Category Archive for: «Automation»

Purpose And Applicable Processes Of a SCADA System

What is the SCADA system? SCADA is the technology that enables a user to collect data from one or more distant facilities and to send limited control instructions to those facilities. It is important to note the words “distant” and “limited” in this definition. SCADA has been developed to monitor and control very large process facilities. […]

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Two Basic Methods Used For Braking a Motor (DC Injection and Dynamic)

Braking a Motor Two common basic methods used for braking a motor are DC injection braking and dynamic braking. We will look at both in detail, starting with electric braking. DC Injection Braking Dynamic Braking 1. DC Injection Braking DC injection braking is a method of braking in which direct current (DC) is applied to […]

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Why every industrial plant MUST have an alarm system

Alarm system In industrial plants and installations, control systems are used to monitor and control processes. Control Systems, whether a conventional Control Desk or a Computer/PLCs System with SCADA or a Distributed Control System (DCS), provides a human-machine-interface to monitor and control the plant equipment and processes. Alarm Systems are an integral part of human-machine […]

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Here is why you MUST use variable speed drives in pumping applications

Variable speed drives in pumping applications Pumping applications represent a significant opportunity for applying variable speed drives (VSDs) in new, as well as retrofit installations. The majority of pumping applications need to be controlled. It is unlikely that a pump will run continuously at a maximum speed. Variable speed drives are crucial when limiting the life […]

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What size of a frequency converter do I need? (4 methods to find out)

Frequency converter (FC) rating When determining the rating of a frequency converter at a given load the first step is to consider the load characteristics. There are four different methods for calculating the required output performance and the choice of method depends on the motor data. However, first let’s start with the basics of motor […]

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Why modern buildings MUST have energy metering and monitoring system

Greater energy metering and efficiency The first step to greater efficiency through energy metering and monitoring is to set objectives for the future system. Ideally, users of the system are involved in this process, and are given an opportunity to provide input on the main features to be included in the system. This step is […]

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9 Reasons For Automation Of Manufacturing Processes

Manufacturing automation Automated manufacturing systems operate in the factory on the physical product. They perform operations such as processing, assembly, inspection, or material handling, in some cases accomplishing more than one of these operations in the same system. They are called automated because they perform their operations with a reduced level of human participation compared […]

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Basic PLC program for control of a three-phase AC motor (for beginners)

Motor Starter // While the lighting control system previously discussed is useful to explain basic PLC operation, a more practical, and only slightly more complex, application is start-stop control of an AC motor. Before examining the PLC program, first consider a hard-wired approach. The following line diagram illustrates how a normally open and a normally […]

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The Design Basics Of Motor Protection Circuit Breaker

Motor protection circuit breaker (MPCB) // Application-specific variations of the MCCB, these breakers combine the short-circuit and isolation functionality of the MCCB with the motor overcurrent protection of a traditional overload relay. MPCBs are UL 489 Listed as circuit breakers and verified as motor overload relays. These devices are traditionally used in two component starter applications, […]

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PLC Ladder Logic Functions for Electrical Engineers (Beginners)

TRUE or FALSE condition // To understand programmable logic controllers (PLCs) and their applications, you must first understand the logic concepts behind them. We’ll will explain the relationship between Boolean algebra and logic contact symbology, so that you will be ready to learn about PLC processors and ladder logic functions and diagrams. The binary concept […]

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