Latest Motor Drive Units Education

Categories

Nothing to show for Motor Drive Units category yet. Here are some other education that may interest you.

Cascade Control

Textbook

A simple control system drawn in block diagram form looks like this:…

Integral (Reset) Control

Textbook

Imagine a liquid-level control system for a vessel, where the position…

Non-dispersive Luft Detector Spectroscopy

Textbook

Non-dispersive analysis, while newer in discovery than dispersive…

Analysis of Practical Pneumatic Instruments

Textbook

To better understand the design and operation of self-balancing…

VSD and VFD Motor Drive Features

Textbook

Modern DC and AC motor drives provide features useful when using…

Digital PID Controllers

Textbook

The vast majority of PID controllers in service today are digital in…

Basics of Bridge Circuits

Textbook

A bridge circuit is basically a pair of voltage dividers where the…

Ladder Diagram (LD) Programming Contacts and Coils

Textbook

In the United States, the most common language used to program PLCs is…

Digital Representation of Numerical Data

Textbook

Process measurements are often of an analog nature: the temperature of…

Self-regulating, Integrating, and Runaway Process Characteristics

Textbook

Perhaps the most important rule of controller tuning is to know the…

Basic Feedback Control Principles

Textbook

Feedback Control System Components Before we begin our discussion on…

Control Valve Actuators

Textbook

The purpose of a control valve actuator is to provide the motive force…

Instantaneous and Time-overcurrent (50/51) Protection

Textbook

Perhaps the most basic and necessary protective relay function is…

Limit Switches

Textbook

A limit switch detects the physical motion of an object by direct…

Interposing Relays in PLCs

Textbook

In addition to directly performing logic functions, electromechanical…

Phasors, Phase Shift and Phasor Algebra

Textbook

Phasors are to AC circuit quantities as polarity is to DC circuit…

Ladder Diagram (LD) Structure Commands

Textbook

The simple PLC ladder diagram (LD) commands consist of contacts and…

AC Motor Speed Control

Textbook

AC induction motors are based on the principle of a rotating magnetic…

DC Motor Speed Control

Textbook

DC electric motors generate torque by a reaction between two magnetic…

High-reliability Control Systems

Textbook

As discussed at the beginning of this chapter, instrumentation safety…

Digital PID Controllers

Textbook

The vast majority of PID controllers in service today are digital in…

Differential (87) Current Protection

Textbook

One of the fundamental laws of electric circuits is Kirchhoff’s…

Auxiliary and Lockout (86) Relays

Textbook

An important type of “accessory” relay, especially for…

Wastewater Disinfection Example

Textbook

The final step in treating wastewater before releasing it into the…

FOUNDATION Fieldbus H1 Protocol Device Configuration and Commissioning

Textbook

Fieldbus devices require far more attention in their initial setup and…

Rotating Magnetic Fields in Three-phase AC Induction Motors

Textbook

The following animation shows how the “rotating” magnetic…

Policy-based Fortifications

Textbook

These fortifications focus on human behavior rather than system design…

Positive Displacement Flowmeters

Textbook

A positive displacement flowmeter is a cyclic mechanism built to pass…

Process/Instrument Suitability

Textbook

Every flow-measuring instrument exploits a physical principle to…

Zero and Span Adjustments (Analog Instruments)

Textbook

Linearity of Measurement Instruments The purpose of calibration is to…

2-wire (“loop-powered”) Transmitter Current Loops

Textbook

It is possible to convey electrical power and communicate analog…

Thermistors and Resistance Temperature Detectors (RTDs)

Textbook

One of the simplest classes of temperature sensor is one where…

Phasors, Phase Shift and Phasor Algebra

Textbook

Phasors are to AC circuit quantities as polarity is to DC circuit…

Introduction to Power System Automation

Textbook

Those familiar with industrial instrumentation will find much within…

ANSI/IEEE Function Number Codes

Textbook

In the United States, the ANSI and IEEE organizations have…

Valve Positioners

Textbook

The reason why a pneumatic control valve’s stem position…

Integral (Reset) Control

Textbook

Imagine a liquid-level control system for a vessel, where the position…

Scientific System diagnosis and Scientific Reasoning

Textbook

At the root of successful system diagnosis is a rigorous adherence to…

Interposing Relays in PLCs

Textbook

In addition to directly performing logic functions, electromechanical…

Radiation Level Measurement

Textbook

Certain types of nuclear radiation easily penetrates the walls of…