PLC & AC Drive with Automatic & Manual Industrial Control

Explore how electrical relays use a coil to switch high voltage loads, with normally closed, normally open, common contacts, plus auxiliary contacts and current capacity concepts.

Explore how contactors use a coil to move normally open and normally closed contacts. Learn about main and auxiliary contacts, coil voltage and current ratings for single-phase and three-phase control.

Contrast single phase and three phase induction motors, highlighting maintenance and efficiency, and show how pole count and frequency govern speed, torque, and suitability for fans, pumps, and heavy loads.

Explore how a single phase induction motor changes rotation direction using capacitor switching, with main and auxiliary coils producing opposite magnetic fields; distinguish coils by cross‑section area and starting current.

Explore DC motors, including their use in rolling machines, steel factories, and trains, and learn how AC-to-DC rectification enables motor operation and how PWM and voltage control speed.

Install EKTS software and set up the circuit simulation environment, including selecting install location, completing the setup, and launching the program from the desktop.

Design and simulate a two-direction control circuit for a three-phase induction motor, using normally open and normally closed contacts, interlocks, contactors, and start/stop controls to switch forward and reverse rotation.

Learn how to reverse a star-delta motor by choosing forward or reverse, then switch between star and delta with interlocked contacts and a five-second timer.

Execute a sequential motor start for three motors using contactors and timer delays, with a start button, latch, and timed repetitions.

Observe three motors activate sequentially in a timed loop, driven by two-second timers and normally closed contacts that control the power path.

Design and simulate a timer-driven circuit that synchronizes three motors, using normally closed and normally open contacts, latching, and manual start/stop controls.

Explore how an automatic transfer switch (ats) shifts the load from the main power source to a generator during power failure, with braking and control systems ensuring safe return.

Design a motor feeder from a 380-volt three-phase supply over 100 m, sizing a 25 mm² cable for a 70 hp pf 0.8 motor and confirming a 3.9% voltage drop.

Learn ladder language fundamentals for PLC programming, including normally open and normally closed contacts and output coils. Use switches and lamps to illustrate logic in practical control scenarios.

Design ladder logic and wire an S7-1200 plc using input and output modules to control a coil-driven load with normally open and normally closed stops and pushbuttons.

Explore ladder language programming in Logic Supro by building a simple start-stop circuit to light a lamp using normally open and normally closed contacts, input/output simulation, and coil outputs.

Explore a batch simulator that uses high and low level sensors to control pump 1 for filling and pump 3 for draining, with interlocks and latch logic to prevent operation.

Explore a batch simulator automation system that uses a software marker to coordinate pump start with tank levels, preventing premature filling and enabling controlled batch transitions.

This lecture demonstrates controlling a motor with a single button using counters in a plc, covering counter setup, osr input, reset logic, and a simulation to validate start-stop sequencing.

explore sensor types for automation: reflective, inductive, capacitive, limit switches, and magnetic (reed) switches, highlighting sensitivity control, normally open/closed outputs, and non-contact operation.

Explore three level sensing methods for water level—three-level probes with bolts and rods signaling low, medium, and high—plus exact measurements by pressure sensor, load cell, resistance, and ultrasonic sensing.

Learn how variable speed drives control motor speed with adjustable voltage and frequency. Understand how input type and motor connections influence output and safe operation.

Install and launch the YASKAWA software for PLC and AC drive practice, navigate the installation steps, and launch the programming simulator to begin hands-on control training.

Navigate the VSD datasheet to access mechanical and electrical installation sections, startup programming, and operation, then use the quick reference and user setting table to configure initialization and frequency reference.

Explore the internal design of a VSD motor driver, from rectifying AC to DC, PWM shaping with transistors into a sine-like output, and braking via external resistor and freewheel diodes.

Explore PLC control of two conveyors using sensors, normally open and normally closed contacts, and a negative age sample to sequence start and stop of motors.

Explore a lab-style simulation of a PLC and AC drive control using a push-button start/stop circuit. Learn to implement normally open/closed contacts, memory bits, set/reset operations, and motor control logic.

Demonstrates a plc ladder logic solution for an automated tank fill with low and high level sensors, two pumps, and alternating activation using a memory marker.

Explore FBD and STL examples by wiring a motor start/stop with set and reset, using normally closed/open contacts, and addressing scan-edge issues with negative-edge sampling and multiple branches.

Demonstrate FBD programming for PLCs by configuring hardware, creating a project, selecting the FBD language, and building networks with blocks and edge-triggered logic, then simulate and download code.

Explore memory fundamentals in PLC systems, detailing bits, bytes, memory words and double words, binary to decimal conversion, sign bits, and maximum values.

This lecture demonstrates automating a star-delta motor start using a Siemens S7-300 PLC, sequencing main, star and delta contactors with timers and interlocks to prevent overlap.