000			04116nam a2200313Ia 4500
001			356421
003			0000000000
005			20211104093611.0
008			190403s2020 maua 001 0 eng d
020			_a9781337798686;1337798681
035			_a(OCoLC)1091233818
040			_aHUA _cHUA _erda
050			_aTK 2851 _b.H426 2020
100			_aHerman, Stephen L.,
245		0	_aUnderstanding motor controls / _cStephen L. Herman.
264			_aBoston, MA, USA : _bCengage, _cc2020.
300			_axiv, 641 pages : _bcolor illustrations _c28 cm.
336			_atext _2rdacontent
337			_aunmediated _2rdamedia
338			_avolume _2rdacarrier
500			_aActually published in 2019.
500			_aIncludes index.
505			_aBasic control circuits and components -- General principles of motor control -- Symbols and schematic diagrams -- Manual starters -- Overload relays -- Relays, contractors, and motor starters -- The control transformer -- Basic control circuits -- Start-stop push button control -- Mulitple push button stations -- Forward-reverse control -- Jogging and inching -- Timing relays -- Sequence control -- Sensing devices -- Pressure switches and sensors -- Float switches and liquid level sensors -- Flow switches -- Limit switchces -- Temperature sensing devices -- Hall effect sensors -- Proximity detectors -- Photodetectors -- Reading large schematic diagrams -- Installing control systems -- Starting and braking methods -- Across-the-line starting -- Resistor and reactor starting for AC motors -- Autotransformer starting -- Wye-delta starting -- Part winding starters -- Direct current motors -- Single-phase motors -- Braking -- Wound rotor, synchronous, and consequent pole motors -- Wound rotor motors -- Synchronous motors -- Consequent pole motors -- Variable speed drives -- Variable voltage and magnetic clutches -- Solid-state DC motor controls -- Variable frequency control -- Motor installation -- Motor installation -- Programmable logic controllers -- Programmable logic controllers -- Programming a programmable logic controller -- Analog sensing for programmable logic controllers -- Developing control circuits and troubleshooting -- Developing control circuits -- Troubleshooting -- Direct drives and pulley drives -- Semiconductors -- The PN junction -- The zener diode -- Light-emitting diodes and photodiodes -- The transistor -- The unijunction transistor -- The SCR -- The Diac -- The triac -- The 555 timer -- The operational amplifier -- Laboratory exercises -- Basic control -- Start-stop push button control -- Multiple push button stations -- Forward-reverse control -- Sequence control -- Jogging controls -- On-delay timers -- Off-delay timers -- Designing a printing press circuit -- Sequence starting and stopping for three motors -- Hydraulic press control -- Design of two flashing lights -- Design of three flashing lights -- Control for three pumps -- Oil pressure pump circuit for a compressor -- Autotransformer starter.
520			_aLearn to install, troubleshoot and test electrical motors like a pro with Herman's UNDERSTANDING MOTOR CONTROLS, 4E. This unique, real-world systems approach to learning motor control devices introduces basic principles using numerous up-to-date illustrations and step-by-step thorough explanations. You start with basic control circuits and components and master all must-know" applications and procedures before advancing to more complex topics. Updated content reflects today's National Electrical Code. From safety and development to operations and problem solving, complete coverage prepares you to become an industrial electrician. You develop a strong foundation in basic control circuits, sensing devices, solid-state controls, variable speed drives and programmable logic controllers (PLCs) as hands-on lab experiments guide you in putting principles you've mastered into actual practice." -- Provided by publisher.
650			_aElectric controllers. _955196
650			_aElectric motors. _955197
942			_cCIR
999			_c92094 _d92094