PLC & AC Drive with Automatic & Manual Industrial Control

Differentiate analog and digital signals, explain their values, and compare 24–48 volt power signals with 5–12 volt systems, highlighting voltage drop, stability, and constant-power considerations.

Explore toggle switches and push button switches, including normally closed and normally open configurations, plus SPST, SPDT, and DPDT concepts for circuit 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 electrical overload triggers a delayed shutdown after five seconds to protect motors, contrasts with instantaneous circuit breakers, and explains manual versus automatic mode settings.

Design a motor control system with circuit breakers, contactors, and overload protection, calculating overload, contactor, and breaker currents; distinguish static and dynamic elements and short-circuit versus starting conditions.

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 uses a main winding and an auxiliary winding with a capacitor to start, then centrifugal switch disconnects the auxiliary winding once speed is reached.

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 motor starting methods, including direct online and variable speed drive techniques, to control startup current, overcome inertia, and achieve stable torque for three-phase induction motors.

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.

Implement a dual-location motor start-stop control using parallel start switches and series stop switches, with run, fault, and overload indicator lamps for protection and monitoring.

Learn how to control a three-phase motor direction by reversing two phases, using interlocked contactors to prevent short circuits, and why stopping the motor first is essential.

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.

Explore star and delta configurations in a three-phase system, derive V line and V phase relationships, visualize phasor vectors, and examine starting current and torque implications for motor control.

Explore star-delta motor control using a Bauer circuit; start in star to limit inrush, then switch to delta after a few seconds with interlocking for safety.

Discover how timers count time to control machine tasks, using input signals to trigger on delay, off delay, and retentive timers with normally open or closed contacts.

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.

Explore real power and reactive power, their impact on apparent and complex power, and how inductive and capacitive loads affect leading and lagging power factors to optimize power factor.

Offset inductive reactive power with delta-connected capacitor banks and calculate Qc from Q1, Q2, and phi to improve power factor in a 380 V three-phase system.

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.

Learn to design batch automation using a plc system that controls pumps, sensors, a mixer, and a heater to fill and stop a tank based on level signals.

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.

Explore a batch simulator automation sequence that fills a tank to max level, heats and stirs to a set temperature, then drains, with PLC interlocks and markers for safety.

Explore a dual compressor system simulated in Supro, using two motors, a tank, and pressure sensors to automatically and manually control on/off, with status lamps indicating operation.

this lecture implements integrated plc control for a dual compressor system with two motors, using a selector to run one, the other, or both in parallel to fill a tank.

explore the latch and unlatch technique in ladder programming, using separate output coils to hold a motor on or off based on input signals until you actively change the latch.

Demonstrate a batch process on a patch simulator by using latch and unlatch control to manage pump 1, mixer, heater, and pump 3 based on liquid level and temperature sensors.

Demonstrate batch process control using a batch simulator to manage tank filling and emptying with pumps, high/low level sensors, and memory latching to preserve state after stop.

Demonstrates a batch simulator automation system that switches between three bombs to fill and empty a tank, using start/stop controls, level and temperature sensors, MXR, a mixer and heater.

Explore three-motor control using PLC timers, with sequential starts every 10 seconds and a stop function, utilizing normally closed contacts, output coils, and latching.

Demonstrates a silo automation sequence with a conveyor, sensors, a valve, and a motor to fill boxes, then restart for the next cycle, using memory markers to preserve state.

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.

Control two motors with a single push using a PLC simulation, employing normally open/closed contacts, a latch, two counters, and a reset strategy to cycle motor one and motor two.

Design a PLC program using timer on delay and timer off delay to run a motor in a 30-second on/off loop, with start and stop control and markers.

Learn to run and stop a motor for a fixed number of cycles using a timer and counter in a PLC program, with start and reset and final stop.

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.

Convert ladder logic to a classic relay circuit by mapping markers to coils and using normally open and normally closed contacts, with proximity and level sensors controlling motors and valves.

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.

Configure the variable speed drive by formatting the driver, selecting two-wire or three-wire control, and setting the frequency reference, run/stop, and stopping methods with ramp timing.

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.

Compare ramp to stop and coast to stop for inverters, and show how DC injection current enables a precise stop at a specific time and distance for critical loads.

Explore the siemens s7-200, s7-300, and s7-400 plc families, their racks and modules, memory and cables, and how to size power supplies and organize bytes and bits.

Explore ladder logic fundamentals, including normally open and normally closed signals, set and reset functions, and SR blocks, to understand how coils and outputs respond in industrial control.

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 ladder, function block diagram, and statement list languages used in PLCs, and see how and, or, and negation operations map to blocks and inputs.

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.