Motors and Controls — Florida Course Repo

Course Description

ETS 1511C — Motors and Controls is a 3-credit-hour laboratory course within the Engineering Technologies / Specialty Engineering Technology taxonomy of Florida's Statewide Course Numbering System (SCNS). The course introduces students to the fundamental theory, application, and hands-on operation of electric motors and motor control systems used in industrial and commercial settings. Students study the operating principles of AC and DC motors, interpret ladder diagrams and wiring schematics, wire and test control circuits, and develop skills in troubleshooting motor and control system faults. The course combines lecture with laboratory practice to prepare students for entry-level employment in manufacturing, industrial maintenance, and related fields.

Learning Outcomes

Required Learning Outcomes

Upon successful completion of this course, students will be able to:

Explain the operating principles of single-phase and three-phase AC induction motors.
Describe the operating principles of DC motors, including series, shunt, and compound types.
Read, interpret, and draw ladder diagrams and wiring diagrams for motor control circuits.
Identify and correctly apply pilot devices (pushbuttons, limit switches, float switches, pressure switches) in control circuits.
Wire, test, and operate motor starters, contactors, overload relays, and associated control components.
Demonstrate safe installation and wiring practices consistent with applicable electrical codes and industry standards.
Troubleshoot and diagnose faults in motor and motor control circuits using appropriate test equipment.
Explain the function and selection criteria of motor protection devices including fuses, circuit breakers, and thermal overloads.

Optional Learning Outcomes

Depending on institutional emphasis and available lab resources, students may also be able to:

Program and configure a basic Variable Frequency Drive (VFD) for AC motor speed control.
Demonstrate introductory Programmable Logic Controller (PLC) concepts as applied to motor control.
Apply National Electrical Code (NEC) requirements for motor branch circuit sizing and protection.
Describe the operating principles and applications of servo motors and stepper motors in automation systems.
Analyze energy efficiency considerations in motor selection and control strategies.

Major Topics

Required Topics

Electrical Safety — Lockout/Tagout (LOTO) procedures, personal protective equipment (PPE), and safe work practices in motor control environments.
DC Motor Theory — Construction, operating principles, speed-torque characteristics, and starting methods for series, shunt, and compound DC motors.
AC Motor Theory — Single-phase and three-phase induction motor construction, rotating magnetic fields, slip, and torque characteristics.
Motor Nameplate Data — Interpreting nameplate ratings including voltage, current, horsepower, speed (RPM), service factor, and duty cycle.
Ladder Diagrams and Wiring Diagrams — NEMA and IEC schematic symbols; reading, drawing, and converting between ladder and wiring diagrams.
Pilot Devices — Pushbuttons, selector switches, limit switches, float switches, pressure switches, temperature switches, and proximity sensors.
Contactors and Motor Starters — NEMA and IEC ratings, coil and contact operation, full-voltage across-the-line starting.
Overload Protection — Thermal overload relays, electronic overloads, sizing and selection for motor protection.
Control Circuit Design — Seal-in (holding) circuits, interlocking, reversing circuits, jogging, and multi-speed control circuits.
Timers and Timing Circuits — On-delay and off-delay timers, pneumatic and solid-state timer applications.
Troubleshooting Motor Control Circuits — Systematic diagnosis methods, use of multimeters and clamp-on ammeters, identifying open and short circuits.

Optional Topics

Variable Frequency Drives (VFDs) — Operating principles, parameter configuration, speed control methods, and applications in HVAC and manufacturing.
Reduced-Voltage Starting Methods — Autotransformer starters, wye-delta starters, and soft starters.
Introduction to PLCs in Motor Control — Basic PLC architecture, I/O modules, ladder logic programming as applied to motor control.
Three-Phase Motor Testing and Maintenance — Insulation resistance testing (megger), bearing inspection, vibration analysis overview.
NEC Motor Article (Article 430) — Branch circuit conductors, disconnecting means, motor controllers, and overcurrent protection sizing.
Servo and Stepper Motors — Operating principles and applications in CNC and robotics systems.
Photoelectric and Proximity Sensors — Sensor types, wiring configurations (NPN/PNP), and integration into control circuits.

Resources & Tools

Textbook: Electric Motor Controls by Gary Rockis & Glen Mazur (American Technical Publishers) — widely adopted at Florida colleges for this course level.
Lab Equipment: Motor control trainers, NEMA and IEC contactors, full-voltage motor starters, pushbutton stations, three-phase and single-phase AC motors, DC motors, variable frequency drives, multimeters, clamp-on ammeters, and megohm meters.
Software/Simulation: Motor control simulation software; optional PLC programming software (e.g., RSLogix Micro, TIA Portal Lite).
Reference Standards: NFPA 70 — National Electrical Code (NEC), NEMA Standards, OSHA 29 CFR 1910.147 (Lockout/Tagout).
Supplemental Resources: Manufacturer documentation from Allen-Bradley (Rockwell Automation), Siemens, Square D (Schneider Electric), and Eaton for contactors, starters, and drives.

Career Pathways

Successful completion of ETS 1511C supports entry into the following career pathways:

Industrial Maintenance Technician — Maintenance and repair of motors, conveyor systems, and production equipment in manufacturing plants.
Electrical Technician / Electrician Apprentice — Commercial and industrial wiring, including motor branch circuits and control panel installation.
Automation / Controls Technician — Operation and maintenance of automated production lines using PLCs, VFDs, and sensors.
HVAC/R Technician — Diagnosis and replacement of motors and motor controls in heating, cooling, and refrigeration systems.
Electromechanical Technician — Supporting engineering teams in testing, installing, and maintaining electromechanical equipment.
Manufacturing Associate / Process Technician — Entry-level roles in production facilities requiring knowledge of motor-driven equipment.

This course also serves as foundational preparation for programs in Electrical Technology, Industrial Technology, and Mechatronics at Florida colleges and universities.

Special Information

Certification Preparation: The content of this course aligns with competencies assessed in several industry-recognized credentials, which students may pursue independently:

NIMS (National Institute for Metalworking Skills) — Industrial Technology Maintenance credentials covering electrical systems.
NECA / NJATC Electrical Apprenticeship — Foundational motor control knowledge supports entry into Joint Apprenticeship Training programs.
MSSC (Manufacturing Skill Standards Council) — Certified Production Technician (CPT) — Safety and maintenance competency areas overlap with course content.
CompTIA Electronics Technician — Motor and control circuit concepts complement broader electronics knowledge tested in this credential.

Lab Safety Requirement: Students enrolled in ETS 1511C are expected to follow all electrical safety protocols, including OSHA Lockout/Tagout (LOTO) procedures, when working in the lab environment. Appropriate PPE, including safety glasses and insulated gloves rated for the voltage levels encountered, is required during all laboratory sessions.

Program Context: At FSCJ, this course is a required component of the Pneumatics, Hydraulics and Motors for Manufacturing Technical Certificate (Program 6043), typically offered in the Spring term. It may also apply toward Associate in Science degrees in Engineering Technology and related Specialty Engineering Technology programs at participating Florida colleges.