Introduction to AC Motor Controls  

On-Site Class

8-hours/CEUs

Class covers manual starters, contactors, magnetic starters, overload devices, two wire control circuits, fuse checking, troubleshooting control circuits, control components, pilot devices, parallel stop-start stations, automatic control circuits, jogging circuits, circuit protection, reversing control circuits, electrical and mechanical interlocks, and reversing with time delays.

Course Outline:

Controllers

Manual Starters, Contactors, Magnetic Starters, Thermal Overload Devices,

Magnetic Overload Devices, Solid State Overload Devices, Starter Sizes,

Arc Suppression

      Basic Control Circuits

Two Wire Control Circuits, Checking Fuses, Troubleshooting Control Circuits

Control Components

Contacts, Switch Basics, Single Pole Double Throw, Double Pole Double Throw, Special DPDT, Push Buttons, Selector Switches, Indicator Lights,

Limit Switches, Proximity Switches, Optical Limit Switches, Float Switch,

Liquid Level Switch, Flow Switch, Foot Switch, Pressure Switch, Temperature Switch, Drum Switch, Reed Switch, Liquid Level Switch,

Timing Devices

Using Pilot Devices for Motor Control

Parallel Stop-Start Stations, Pilot Lights in Control Circuits, Automatic Control Circuits, Jogging Circuits

Article 430 National Electrical Code7

Terminology, Motor Name Plates, Calculating Motor Circuit Conductors,

Branch Circuit Overcurrent Protective Devices, Motor and Branch Circuit Overload Protection, Shunting Overloads During Starting, Automatic Restart,

Supervised Alarm, Installation of Controllers and Disconnects, Motor Circuit Conductors, Feeders and Feeder Taps, Motor Circuit Calculations

Circuit Protection

Low Voltage Fuses, Types and Classes of Fuses, Standard Circuit Breakers,

Magnetic Only Circuit Breakers, Solid State Circuit Breakers,  Phase Monitors, Separate Control Voltage, Overcurrent Protection, Grounded Control Circuits, Ground Detection Lamps

Reversing Control Circuits

Reversing Starters, Mechanical Interlock, Pushbutton Interlock, Reversing  Using a Selector Switch, Reversing with Limit Switches, Reversing with Time Delays

Motor Deceleration/Stopping

Plugging, Anti-Plugging, Dynamic Braking, Electric Brakes

Sequence Control