Solid-State Devices Used in Industrial Logic Circuits
- INTRODUCTION: Objectives and Overview
- RELAY LOGIC
- TYPICAL LOGIC CIRCUITS
- RELAY LOGIC USED TO CONTROL A PNEUMATIC CYLINDER
- USING RELAY LOGIC TO DETERMINE ROBOT PROGRAM FOR INSERTING STUDS INTO TAILLIGHTS FOR AUTOMOBILES
- SOLID-STATE DEVICES USED FOR LOGIC
- SOLID-STATE LOGIC BLOCKS
- SOLID-STATE LOGIC EQUIVALENT TO THE MERCURY COUGAR TAIL-LIGHT ASSEMBLY CIRCUIT
- CONNECTING INPUTS TO SOLID-STATE DEVICES
- OUTPUTS FOR LOGIC CIRCUITS
- SOLID-STATE RELAYS
- A COMPARISON OF SOLID-STATE LOGIC AND RELAY LOGIC
- SOLID-STATE AND RELAY LOGIC CIRCUITS TO CONTROI PART BINS FOR ROBOTIC AUTOMATED WORK CELLS
- Operation of the Relay Logic for Parts Bin Level Control
- QUIZ
- SAMPLE JOB ASSIGNMENT
Open- and Closed-Loop Feedback Systems
- Introduction
- Parts of a Typical Control System
- A Typical Open-Loop System
- Single-Point Process Controller
- Bumpless Transfer
- Valve Positioning System to Control Water Level in a Tank
- How Fast Controllers Will Change the Output
- Understanding Gain, Reset, and Rate
- Adding Offset (Bias)
- Industrial System that uses Gain and Reset: An Example
- Adding Derivative (Rate) to the Formula
- Proportional and Derivative Control (PD)
- Proportional Band
- Example: Ratio Control For On/Off Heating Contactor
- Types of System Response
- Tuning the Controller
- Adjusting Gain, Reset, and Rate After a System Has Been Running
- Process Alarms and Deviation Alarms
- Advanced Closed Loops
- Example: Servo Applications
- Quiz
Programmable Logic Controllers (PLC)
- PLC -- Study Objectives
- Overview of Programmable Logic Controllers
- An Example of a Programmable Controller Application
- Scanning a PLC Program When it is in The Run Mode
- Equating the PLC with Traditional Solid-State Logic
- Features of the Programmable Controller
- Operation of Programmable Controllers
- Addresses for Inputs and Outputs for the SLC 100
- Example Input and Output Instructions for the SLC 100
- Using the SLC 100 to Control a Batch and Heat-Treating Process: Making Carbon Brushes
- Inputs and Outputs for the Carbon Brush Process System
- Operation of the Heat-Treating Part of the System
- Using Timers to Stage the Electric Heat
- Counter Operation in a PLC
- Timing and Counting Values Beyond 9999
- Sequencers Used to Control the Batch Mixing for the Carbon Brush Application
- Other Sequencer Functions
- Circuits for Input and Output Modules
- Wiring Input Switches and Output Devices to the PLC
- Analog Input Modules
- Master Control Reset and Zone Control Last State
- Using the Hand-Held Programmer
- Advanced Instructions Found in Larger PLCs
- Typical Problems a Technician will Encounter with PLCs
- Addressing Other Allen-Bradley PLCs
- Documenting a PLC Program with Software
- Sample PLC Job Assignment
- Quiz
Industrial Robotics and CNC
- Objectives
- Overview of Industrial Robots
- Types of Industrial Robots
- Cylindrical Robots
- Rectilinear Robots
- Spherical Robots
- Jointed Spherical (Articulated Arm) Robots
- Types of Industrial Robot Control
- Point-to-Point Robot Control
- Continuous-Path Control
- XYZ Control
- Positive-Stop Control
- Types of Industrial Robot Programs
- Point-to-Point and XYZ Programs
- Continuous-Path Programs
- Positive-Stop Programs and PLC Programs
- BASIC Programs and C Programs
- Computer Numerical Control (CNC) Machines
- Basic Parts of Industrial Robot Systems
- Power Supply
- Controllers and Teach Pendants
- Axis Control Module
- Amplifiers, Motors, and Feedback Sensors
- Positional Feedback Loop and Velocity Feedback Loop
- Other Types of Robot Actuators
- Hydraulic Actuators
- Pneumatic Actuators
- Comparison of Industrial Robot Actuators
- Input and Output Signals for Industrial Robots
- Input Circuits for Industrial Robot Signals
- Output Circuits for Industrial Robot Signals
- Input and Output Modules
- Industrial Robots Used In Typical Work Cells And Manufacturing Cells
- Automotive Welding Line
- Loading and Unloading Bonding Machines
- Robotic Painting Cells
- Industrial Robotics Review
- Example: In-The-Field Job Assignment
- Industrial Robotics Quiz
Electricians
- The Importance of Electricians
- Top Electrician Jobs
- A Look at Electrician Schools
- A Look at Electrician Training
- An Electrician's Tools
- Getting Your Electrician License
- Essential Electrician Services
Let's open the broad topic of Industrial Electricity with Open and Closed-Loop Feedback Systems...
On this topic, we will explain:
- The difference between open-loop and closed-loop systems.
- The terms gain, reset, and rate.
- The terms proportional, integral, and derivative.
- The term differential gap (dead band) as it refers to an on-off controller.
- The term bump.
- How a controller that uses proportional only (P only) will respond.
- How a controller that uses proportional, integral, and derivative (PID) will respond.
- The term bias (offset) and how it's used to help the P-only controller.
- The term proportional band.
- The operation of a ratio control system for an on-off heating contactor.
- How a loop is tuned.
- How you'd determine the proper value of gain, reset, and rate for a new closed-loop system.
- The function of process alarms.
- The function of deviation alarms.
We will present:
- A block diagram for a typical servo (feedback) system and identify the setpoint (SP), process variable (PV), error, summing junction, controller amp, and output (final control element).
We will discuss:
- The difference between manual mode and automatic mode.
- The term bumpless transfer.
- read more...
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