Unit 1 Electrical Safety 3 Hours

Transcription

1 Electrical Maintenance Training Curriculum ELECTRICAL CONTROL, CONNECTIONS & LADDER LOGIC Course Outline: Length: 50 Hours Prerequisite: Company Safety Protocols Unit 1 Electrical Safety 3 Hours Friend and Foe Electricity and the Human Body Hazards of Electricity Effects of Voltage, Current and Resistance Danger High Voltage Lock, Tag and Think Safe Electrical Practices Summary of Unit 1 LAB 1 Working Safely with Electricity LAB 2 Electrical Controls Trainer Familiarization Unit 2 Control Transformers 2.75 Hours Alternating Current Power Systems Voltage Measurements Control Transformers 480 Volt Primary Connections 240 Volt Primary Connections Transformer Protection and Grounding Testing Control Transformers Summary of Unit 2 LAB 3 Voltage Measurements LAB 4 Control Transformers Unit 3 Overcurrent Protection 3.25 Hours Overcurrent Protection Overloads Short Circuits Overcurrent Protection Devices Fuses Non-Time Delay Fuses Time Delay Fuses Current Limiting Fuses Fuse Selection

2 Renewable Fuses Fuse Classes Testing Fuses Replacing Fuses Circuit Breakers Thermal Circuit Breakers Magnetic Circuit Breakers Summary of Unit 3 LAB 5 Overcurrent Protections Unit 4 Pushbutton Stations 3.5 Hours Pushbutton Switches Legend Plates Contact Blocks Operators Color Coding of Operators Pushbutton Units Selector Switches Two Position Selector Switch Three Position Selector Switch Pilot Lights Full Voltage Pilot Lights Transformer Pilot Lights Push to Test Pilot Lights Cluster Pilot Lights Full and Miniature Size Devices Testing contact Blocks Continuity Testers Testing Pilot Light Units Enclosures Summary of Unit 4 LAB 6 Continuity Testers LAB 7 Pushbutton Controls LAB 8 Pilot Lights Unit 5 Limit Switches 4 Hours Limit Switches Mechanical Limit Switches Mechanical Limit Switch Adjustments Mechanical Limit Switch Contacts Proximity Switches Inductive Proximity Switches Capacitive Proximity Switches Proximity Switch Outputs Connecting Multiple Proximity Switches

3 Photoelectric Switches Direct Mode Retroreflective Mode Diffuse Mode Convergent Mode Photoelectric Switch Outputs Pressure Switches Temperature Switches Flow, Float and Foot Switches Testing Limit Switches Summary of Unit 5 LAB 9 Mechanical Limit Switches LAB 10 Proximity Switches LAB 11 Photoelectric Switches Unit 6 Solenoids 2.5 Hours Solenoids Solenoid Construction Eddy Currents Solenoid Operation Inrush and Sealing Current Shading Coil Physical and Electrical Characteristics Solenoid Valves Single Actuator Valves Double Actuator Valves Troubleshooting Solenoids Testing Solenoids Summary of Unit 6 LAB 12 Solenoids Unit 7 Relays 5 Hours An Electrically Operated Switch Relay Construction Relay Operation Relay Applications Control Relay Coils Control Relay Contacts Control Relay Configurations Control Relay Terminal Identification Electrical Interlock Circuit Latching Relays Time Delay Relays Plug-in Relays Solid State Relays

4 Troubleshooting Relay Circuits Summary of Unit 7 LAB 13 Control Relays LAB 14 Latching Relays LAB 15 Time Delay Relays LAB 16 Plug in Relays Unit 8 Timers & Counters 2.5 Hours Timer Applications Elapsed Time Indicators Reset Timers Reset Timer Operation Reset Timer Contacts Pushbutton Reset Timers Repeat Cycle Timers Counter Applications Reset Counters Reset Counter Operation Reset Counter Contacts Summary of Unit 8 LAB 17 Timers Unit 9 Three Phase Motors 3.5 Hours Three Phase AC Motors Principles of Rotating Electrical Machinery Rotating Magnetic Field Torque Horsepower Induction Motor Repulsion Motor Motor Speed and Slip Motor Frame Sizes Motor Enclosures Squirrel Cage Induction Motors Single Voltage Connections Dual Voltage Connections Multi-Speed Motors Direction of Rotation AC Repulsion Motors Wound Rotor Motors Synchronous Motors Troubleshooting AC Motors Motor Nameplate Information Voltage Measurements Current Measurements

5 Ventilation Lubrication Vibration Summary of Unit 9 LAB 18 Three Phase AC Motors Unit 10 Contactors & Motor Starters 5 Hours Contactors Contactor Sizes Contact Arcing Contactor Applications Overload Relays Melting Alloy Overload Relays Overload Heater Selection Bimetallic, Magnetic, and Solid State OL Relays Full Voltage Motor Starters Reversing Motor Starters Reduced Voltage Motor Starters Primary Resistor Motor Starters Autotransformer Motor Starters Wye-Delta Motor Starters Part Winding Motor Starters Solid State Motor Starters Combination Motor Starters IEC Devices Troubleshooting Motor Starters Checking the Control Circuit in a Starter Testing Overload Relay contacts Checking the Power Circuit in a Starter Testing Contactors and Heaters Testing Motor Windings Summary of Unit 10 LAB 19 Non-Reversing Motor Starter LAB 20 Reversing Motor Starter Unit 11 Ladder Logic & Electrical Drawings 12.5 Hours Electrical Symbols Electrical Drawings Wiring Diagrams Ladder Diagrams Conductor Identification IEC Component Symbols IEC Terminal Identification Ladder Logic AND Ladder Logic

6 OR Ladder Logic NOT Ladder Logic NAND Ladder Logic NOR Ladder Logic Two Wire Control Three Wire Control Ladder Logic Control Circuits Multiple Pushbutton Ladder Logic Manual-Off-Automatic Ladder Logic Sequencing Ladder Logic Electrical Interlocks Master Control Relay Ladder Logic Summary of Unit 11 LAB 21 Wiring Diagrams LAB 22 Ladder Diagrams LAB 23 Two Wire Control LAB 24 Multiple Pushbuttons LAB 25 Man-Off-Automatic Operation LAB 26 Manual Sequencing LAB 27 Automatic Sequencing LAB 28 Electrical Interlocks Unit 12 Jogging & Plugging 2.5 Hours Jogging Selector Switch Jogging Control Relay Jogging Jogging a Reversing Starter Plugging Speed Switches Plugging Circuits Anti-Plugging Summary of Unit 12 LAB 29 Jogging LAB 30 Drill Station Unit 13 Direct Current Motors & Drives 2.5 Hours DC Motor Characteristics DC Motor Construction Frame Field Armature Commutator Operation Identification of Motor Leads Direction of Rotation Motor Speed

7 Series DC Motor Shunt DC Motor Compound DC Motor Long and Short Shunts Maintenance of DC Motors Brush and Holder Maintenance Commutator Maintenance Commutator Sparking Summary of Unit 13 LAB 31 DC Motor and Drive