SENSOR AND MOTOR BASIC TROUBLESHOOTING

COURSE OBJECTIVES

Upon completion of this course module, the student will be able to:

1. Identify various sensor types including. photoelectric, proximity, hall effect, ultrasonic, temperature and limit.
2. Install, maintain and troubleshoot sensors in systems. Explain AC single-phase and 3-phase motor operating principles and components.
3. Interpret information provided on AC motor nameplates.
4. Describe DC motor configurations and compare characteristics.
5. Explain specification and operation of AC and DC servo motors.
6. Troubleshoot contactors and motor starters.

COURSE OBJECTIVES

Safety concerns pertaining to sensors

1. 1. Prevention
   2. Emergency procedures

Sensors

1. 1. Functions
   2. Uses

Sensor Types

1. 1. Photoelectric
   2. Proximity
   3. Hall effect
   4. Ultrasonic
   5. Temperature
   6. Limit switch

Troubleshoot Sensors in System

1. 1. Asking the right questions
   2. Using schematics and diagrams

Replace Sensors in System

1. 1. Removal
   2. Installation

Mechanical Adjustments

1. 1. Installation
   2. Replacement
   3. Target acquisition and confirmation
   4. Inspection

Verify Signals

1. 1. Tracing
   2. Confirmation

Single-Phase AC Motors

1. 1. Principles and Components
   2. Types and Advantages/Disadvantages of Each
   3. Lab Demonstration of Single-Phase AC Motor Maintenance and Troubleshooting
   4. Capacitor Start and Capacitor Run
   5. Single-Phase AC Motor Troubleshooting

Three-Phase AC Motors

1. 1. Principles and Components
   2. Types and Advantages/Disadvantages of Each
   3. Interpretation of AC Motor Nameplates
   4. Three-Phase AC Motor Maintenance and Troubleshooting

Servo Motors

1. 1. Operation of AC and DC Servo Motors and Drives
   2. AC and DC Servo Motors and Drives Maintenance and Troubleshooting

DC Motors

1. 1. Principles and Components
   2. Types and advantages/disadvantages of each
   3. DC Motor Maintenance and Troubleshooting

Speed Control

1. 1. Thrysistor Applications and Operating Principles
   2. Lab Demonstration of Speed Control
   3. PWM and Phase Shift Applications
   4. Variable Speed Drives Applications and Operating Principles
   5. VFD Maintenance and Troubleshooting

Relays and Motor Starters

1. 1. Principles and Components
   2. Types and Advantages/Disadvantages of Each
   3. Relay and Motor Starter troubleshooting and repair