Aug 03, 2010 this feature is not available right now. The purpose of the mixer is to function as a multichannel audio signal ampli. The course proceeds from a thorough overview of motor basics to replacement procedures and fundamental motor maintenance techniques. Lesson 1 troubleshooting with electrical schematics. Describe the basic operation of a threephase ac motor. A stepbystep approach is the best way you can analyze and subsequently troubleshoot a failed system. Ac motor using full or reduced voltage describe the basic operation of a threephase ac motor describe methods for troubleshooting ac motors apply a systematic approach to troubleshooting motor control circuits design and construct motor control circuits implement proper motor control troubleshooting techniques. Solenoids, timers, sensors, relays, troubleshooting, even an introduction to plcs is included. The procedures outlined in these guides expect that the technician understands the hazards of working with high voltage 3 phase.
Dc, ac, and bldc motors introduces practical drive techniques of electric motors to enable stable and efficient control of many application systems, also covering basic principles of highperformance motor control techniques, driving methods, control theories and power converters. This is a very troublesome area on the exam for some. This simulation explores an industrial garage door circuit. After applying some of the general troubleshooting tips to narrow. Control techniques ac and dc drives servo drives and. View and download control techniques commander sk advanced users manual online. This notion was drilled into my head in my early years and has proven itself over and over again. Once the problems have been identified and the motor repaired, reinstall the motor and the motor control. Dec 28, 2018 once the problems have been identified and the motor repaired, reinstall the motor and the motor control. Control techniques is a leading manufacturer of ac and dc variable speed drives, servo drives and servo motors and power conversion technologies for commercial and industrial applications. First, the drive input is the ac power entering the drive from the mains second, the drive and its output, where the ac to dc converter, the dc filter, and the dc to ac inverter provide the three phase power to the motor how to troubleshoot motors and drives, starting at the inputs. You will learn techniques that will help locate faults quickly.
Basic electricity current, voltage, and resistance ohms law and calculations seriesparallel circuits kirchhoffs laws and corollaries. The studio engineer will use the individual controls on the mixer to blend the inputs for the best recording tone and quality. This site is not directly affiliated with business industrial network. Implement proper motor control troubleshooting techniques. For example, in figure b1, the control wiring from the startstop. Electrical motor control circuits free download for windows. Industrial maintenance troubleshooting industrial controls. Stator is shorted or went to ground motor will make a humming noise and the circuit breaker or fuse will trip check for leaks through the coils. How to do electrical troubleshooting of electrical motor. Basics of multimeters analog and digital multimeters solenoid meters accessories. Oct 05, 2010 at the end is just an example how our software uses realworld workorder system to track student while doing electrical troubleshooting with our simulation software, and the detailed analysis report. This is a basic course, without any prerequisites, that. An indepth troubleshooting guide to help you with your ac electric motor issues.
Operators are complaining that a large compressor on several occasions has failed to start. The modern electric motor installation the individual motor drive has practically replaced all other types. Compare these readings to the control boxs operationalvoltage ratings. Pdf lesson 1 troubleshooting with electrical schematics. Electrical motor control circuits is a product developed by business industrial network. Electrical troubleshooting in seven steps efficient plant. Basic troubleshooting techniques apply to every situation and occupation. The course is designed to help students reduce downtime and expense caused by motor failure and increase the overall efficiency of their facility. Then conduct resistance, fuse, and motor tests to help pinpoint the cause of the failure. Practical electric motor handbook pdf by irving m gottlieb. How to troubleshoot motors and drives, starting at the inputs.
Apply a systematic approach to troubleshooting motor control circuits. Freedom motor control centers mcc models or technical. This electric motor control circuit training software is quite detailed. With the latest in smart overloads, soft starters and vfds, the mccs seamlessly integrate to all major industrial protocols. These manuals are specifically made up for the individual panel, and are generally sufficient for any or all problems which may be encountered. Add this electrical motor troubleshooting chart url to your favorites so you can call up on your smart phone to guide you during electrical motor troubleshooting. Note that this article is about troubleshooting threephase motors and drives.
As this article will demonstrate, the use of a digital oscilloscope can help speed up the troubleshooting process for industrial control systems and be more effective in pinpointing the exact nature of the problem. Therefore, motor troubleshooting involves the entire system, not just the. A chandelier has five light bulbs in it, and one of them is not working. Read about specific troubleshooting techniques troubleshooting. If the control box does not switch from start to run, then replace the relay. This video uses electrical troubleshooting simulation software to teach you how to troubleshoot an electrical motor control circuit. Additional time was spent at home studying the manual and writing programs. It is comparatively easy to obtain the required speed through the use of motors directly connected to the driven machine, through speed reducers, or the now more economical geared motors, or even through vbelt or chain or sprocket drive.
Problems and premature failures often indicate input power system troubles, poor or deteriorating mechanical installations, or malfunctions in the driven machinery. Control techniques is a specialist company manufacturing ac and dc variable frequency drives, servo drive technologies and motion control for commercial and industrial applications. If both ratings are within tolerance, then troubleshoot the well pumps motor. Topics include control transformers, manual and magnetic motor starters, reversing techniques, overload protection, automatic input devices and timer relays. Failure of this pump will result in the loss of a generator currently producing half of the stations power output. Ac variable speed drive for 3 phase induction motors from 0. This technique also allows easy implementation of multiple current level drive techniques to improve the mo.
Control circuits workbook by tom henry best selling books to prepare electricians for the licensing exam. Take a stepbystep approach to analyze motor starting problems when troubleshooting a faulty electric motor, time or in this case downtime is money. Implement proper motor control troubleshooting techniques analyze and evaluate faults to determine failed motor control components course agenda day 1 explaining troubleshooting philosophy applying basic troubleshooting methods using the 7step troubleshooting method distinguishing contactors, switches and contacts lab exercises day 2 applying motor controls fundamentals. Torque control 152 speed control 152 overall operating region 154 armature voltage feedback and ir compensation 155 drives without current control 155 chopperfed d. At the end is just an example how our software uses realworld workorder system to track student while doing electrical troubleshooting with our simulation software, and the detailed analysis report.
No matter how urgent the problem and motor failure can cause some very urgent problems always develop a plan of attack before you start. Motor and motor control troubleshooting techniques. This is an excellent book, requested to make control circuits easy to understand for the electrician that is unfamiliar with controls. Gather up any background material you may have on hand and then use your senses to inspect the site. Simutech multimedia industrial electrical troubleshooting. We then cover both basic and specialized motor control circuits. There are a number of troubleshooting guides that have been created by the nidec industrial automation usa technical support team. The very first thing that you should do before starting any type of maintenance on a motor is a visual inspection, a lot of times the trouble can be found just by looking, because if the problem is that bad then it should be very obvious by observation. An article on industrial electrical troubleshooting with sections on industrial electric. The voltage between the start and neutral terminals will drop to zero when the relay switches to the run phase. A laptop computer with plc programming, communication, and operating programs are a necessary tool in todays modern plant. Troubleshooting an open circuit faults in the control circuit.
Your professionals will learn to diagnose and repair multiple faults, honing their skill at troubleshooting motor circuits. Maintenance and troubleshooting three phase induction motor. Fuse or circuit breaker is tripped replace the fuse or reset the breaker. The exercises in this manual, troubleshooting, complement the exercises contained in the manuals basic controls, programmable logic controller, and motor. Aug 01, 2005 take a stepbystep approach to analyze motor starting problems when troubleshooting a faulty electric motor, time or in this case downtime is money. All trademarks, registered trademarks, product names and company names or logos mentioned herein are the property of their respective owners. Basic electrical troubleshooting introduction youtube. No matter how urgent the problem and motor failure can cause some very urgent problems always develop a plan of attack before you start repair work. Learn basic troubleshooting techniques in a logical. Technicians will explore the basic principles of electric motor control, standard control circuits such as startstop and forwardreverse, as well as troubleshooting techniques. These troubleshooting guides are intended for use by qualified electronic technicians versed in motor drives and industrial power devices. Take a stepbystep approach to analyze motor starting problems.
Control techniques commander sk advanced users manual pdf. Eatons freedom motor control centers combine intelligent communications and industryleading arc flash prevention to provide safe, reliable distribution and control to ul 845 standards. Simutech multimedias simulationbased training software system teaches the valuable skill of industrial electrical troubleshooting to keep equipment running smoothly. The purpose of this course is to provide a comprehensive overview of motor control systems including indepth troubleshooting techniques utilizing controller simulator software. Basic electrical troubleshooting a boiler feed pump being powered by two 3500 hp inducti on motors appears to be developing a problem. The widespread use of motors in fields ranging from manufacturing to household applications means that downtime due to a malfunctioned motor can result in a great loss of productivity. The problem could be in the chandeliers wiring open wire connection, open connection in socket, or in the bulb itself burnedout filament. At the end is just an example how our software uses real world workorder system to track student while doing electrical troubleshooting with our simulation software, and the detailed analysis report. Troubleshooting motor circuits tmc is simutech multimedias third troubleshooting simulation. First, engage the starter with manual rotation and measure the resistance across it. Control techniques americas is an ac drives manufacturer and a nidec motor corporation business. Motor control and troubleshooting rockwell automation. This book, therefore, targets the large body of workers engineers and students reasonably versed in engineering concepts who feel the need for practical insights relating to electric motors. Specific troubleshooting techniques troubleshooting.
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