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Industrial Maintenance

TroubleshootingIndustrial Controls Training System

85082- 0

Order no.: 85082-00 First Edition Revision level: 09/2014

By the staff of Festo Didactic

© Festo Didactic Ltée/Ltd, Quebec, Canada 2007 Internet: www.festo-didactic.com e-mail: [email protected]

Printed in Canada All rights reserved ISBN 978-2-89640-225-0 (Printed version) ISBN 978-2-89747-273-3 (CD-ROM) Legal Deposit – Bibliothèque et Archives nationales du Québec, 2007 Legal Deposit – Library and Archives Canada, 2007

The purchaser shall receive a single right of use which is non-exclusive, non-time-limited and limited geographically to use at the purchaser's site/location as follows.

The purchaser shall be entitled to use the work to train his/her staff at the purchaser's site/location and shall also be entitled to use parts of the copyright material as the basis for the production of his/her own training documentation for the training of his/her staff at the purchaser's site/location with acknowledgement of source and to make copies for this purpose. In the case of schools/technical colleges, training centers, and universities, the right of use shall also include use by school and college students and trainees at the purchaser's site/location for teaching purposes.

The right of use shall in all cases exclude the right to publish the copyright material or to make this available for use on intranet, Internet and LMS platforms and databases such as Moodle, which allow access by a wide variety of users, including those outside of the purchaser's site/location.

Entitlement to other rights relating to reproductions, copies, adaptations, translations, microfilming and transfer to and storage and processing in electronic systems, no matter whether in whole or in part, shall require the prior consent of Festo Didactic.

Information in this document is subject to change without notice and does not represent a commitment on the part of Festo Didactic. The Festo materials described in this document are furnished under a license agreement or a nondisclosure agreement.

Festo Didactic recognizes product names as trademarks or registered trademarks of their respective holders.

All other trademarks are the property of their respective owners. Other trademarks and trade names may be used in this document to refer to either the entity claiming the marks and names or their products. Festo Didactic disclaims any proprietary interest in trademarks and trade names other than its own.

© Festo Didactic 85082-00 III

Safety and Common Symbols

The following safety and common symbols may be used in this manual and on the equipment:

Symbol Description

DANGER indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injury.

WARNING indicates a hazard with a medium level of risk which, if not avoided, could result in death or serious injury.

CAUTION indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury.

CAUTION used without the Caution, risk of danger sign , indicates a hazard with a potentially hazardous situation which, if not avoided, may result in property damage.

Caution, risk of electric shock

Caution, hot surface

Caution, risk of danger

Caution, lifting hazard

Caution, hand entanglement hazard

Notice, non-ionizing radiation

Direct current

Alternating current

Both direct and alternating current

Three-phase alternating current

Earth (ground) terminal

Safety and Common Symbols

IV © Festo Didactic 85082-00

Symbol Description

Protective conductor terminal

Frame or chassis terminal

Equipotentiality

On (supply)

Off (supply)

Equipment protected throughout by double insulation or reinforced insulation

In position of a bi-stable push control

Out position of a bi-stable push control

We invite readers of this manual to send us their tips, feedback, and suggestions for improving the book.

Please send these to [email protected].

The authors and Festo Didactic look forward to your comments.

© Festo Didactic 85082-00 V

Table of Contents

Preface ................................................................................................................. VII

About This Manual ................................................................................................ IX

Unit 1 Introduction to Troubleshooting .................................................. 1

Ex. 1-1 Voltmeter Method of Troubleshooting ........................................ 5

Ex. 1-2 Ohmmeter Method of Troubleshooting ..................................... 11

Ex. 1-3 Troubleshooting a Basic Electrical Circuit ............................... 15

Unit 2 Troubleshooting Basic Motor Control Circuits ........................ 19

Ex. 2-1 Troubleshooting a Manual Reversing Starter Circuit .............. 23

Ex. 2-2 Troubleshooting a Motor Starter with Jogging Circuit ............ 27

Ex. 2-3 Troubleshooting a Plugging with Time Relay Circuit .............. 31

Unit 3 Troubleshooting PLC Circuits .................................................... 35

Ex. 3-1 Troubleshooting a PLC Circuit ................................................... 37

Ex. 3-2 Troubleshooting a PLC Reversing Motor Starter with Jogging Circuit ............................................................................ 41

Ex. 3-3 Troubleshooting a PLC Motor Starter with Jogging Circuit ... 45

Unit 4 Troubleshooting AC and DC Drive Circuits .............................. 49

Ex. 4-1 Troubleshooting an AC Drive Circuit ........................................ 51

Ex. 4-2 Troubleshooting an AC Drive Braking and Jogging Circuit ... 53

Ex. 4-3 Troubleshooting a DC Drive Circuit........................................... 57

Appendix A Equipment Utilization Chart ....................................................... 61

Appendix B Basic Setup and Lockout/Tagout Procedures .......................... 63

© Festo Didactic 85082-00 VII

Preface

IX

About This ManualThe exercises in this manual, Troubleshooting, complement the exercises containedin the manuals Basic Controls, Programmable Logic Controller, and Motor Drives.

The present manual is divided into four units:

Unit 1 introduces troubleshooting methods;

Unit 2 introduces the troubleshooting methods that apply to basic motorcontrol circuits. The equipment supplied with the Fundamental Controlssystem, Model 8036-0 or Basic Controls system, Model 8036-1 (or 8036-E),is required to perform this unit;

Unit 3 introduces the troubleshooting methods that apply to circuits wherea PLC is used. The equipment supplied with the Programmable LogicController system, Model 8036-2, is required to perform this unit;

Unit 4 introduces the troubleshooting methods that apply to AC and DCdrive circuits. The equipment supplied with the Motor Drives system, Model8036-3 (or 8036-B), is required to perform this unit.

Each exercise is divided into the following sections:

A clearly defined Exercise Objective;

A Discussion of the theory involved in the exercise;

A Procedure Summary which provides a bridge between the theoreticalDiscussion and the laboratory Procedure;

A step-by-step laboratory Procedure.

Safety Considerations

Make sure that you are wearing appropriate protective equipment before performingany of the exercises in this manual. Remember that you should never perform anexercise if you have any reason to think that a manipulation could be dangerous toyou or your teammates.

Reference Material

Refer to the component data sheets for detailed information about the devices.These data sheets are included on the CD supplied with the manual Basic Controls,Lab-Volt p/n 39163 (or 87774).

Prerequisite

To perform the exercises in this manual, you should have completed the followingmanuals:

Units 1 and 2: Basic Controls, p/n 39163 (or 87774);Unit 3: Basic Controls, p/n 39163 (or 87774), and Programmable Logic

Controller, p/n 39436;Unit 4: Basic Controls, p/n 39163 (or 87774), and Motor Drives, p/n

39653 (or one of 85626, 85725, 87667, 87668, 87669).

About This Manual

X © Festo Didactic 85082-00

Sample Exercise

Extracted from

Student Manual

G1 2

3 4

L1

1 2

3 4R

L2T

L2

L1

LM

* : 1 0208 2

PBG PBR

LEGEND

LM = LOCKOUT MODULE

PBG = GREEN PUSH BUTTON

PBR = RED PUSH BUTTON

L1 = GREEN PILOT LIGHT

L2 = RED PILOT LIGHT

= CONTROL VOLTAGE TRANSFORMER

LM

*208:120 FOR 120 V - 60 Hz NETWORK

380:110 FOR 220 V - 50 Hz NETWORK

415:110 FOR 240 V - 50 Hz NETWORK

380:120 FOR 220 V - 60 Hz NETWORK

T

Sample

Extracted from

Instructor Guide


Voltmeter Method of Troubleshooting

Exercise 1-1

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