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NEW! -- We have moved in!! The site formerly known as "Industrial-Electricity.com" This was our sister site (2005-2016) created simultaneously with gammaelectronics. All its content are finally and conveniently here on gammaelectronics!

NRI Schools--Computer Courses (1995-1998)

NRI 1976 -- Single Lessons: Class C-Power Amps, Oscillators, AM Radio

Electrical Safety Fundamentals

Industrial Electricians Standard Guide of Electricity

Power Systems, Electric Machines and Drives

On our sister site: Basics of Industrial Motor Control

Electric Utility Power Systems


Ultimate Guide to Basic Power System Protection

Ultimate Guide to Industrial Power Distribution

Power System Analysis and Design

Advanced Elec. Installations

Let's open the broad topic of Industrial Electricity with Open and Closed-Loop Feedback Systems...

On this topic, we will explain:

  1. The difference between open-loop and closed-loop systems.
  2. The terms gain, reset, and rate.
  3. The terms proportional, integral, and derivative.
  4. The term differential gap (dead band) as it refers to an on-off controller.
  5. The term bump.
  6. How a controller that uses proportional only (P only) will respond.
  7. How a controller that uses proportional, integral, and derivative (PID) will respond.
  8. The term bias (offset) and how it's used to help the P-only controller.
  9. The term proportional band.
  10. The operation of a ratio control system for an on-off heating contactor.
  11. How a loop is tuned.
  12. How you'd determine the proper value of gain, reset, and rate for a new closed-loop system.
  13. The function of process alarms.
  14. The function of deviation alarms.

We will present:

  1. 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:

  1. The difference between manual mode and automatic mode.
  2. The term bumpless transfer.
  3.

Field Guide to Industrial Electrical Gear

Lenze Servo Drives
above: Lenze Servo Drive

above: Low Voltage Motor Control Center

above: Motor control center solutions incorporating AC Drives. These drives include a wide range of horsepower ratings, enclosure choices and standard/optional features.

Schneider's Model 6 Motor Control Centers with 18-Pulse Drives: The Model 6 Motor Control Center with 18-Pulse Drive is specifically designed for installations specifying clean power, low-harmonic content in compliance with IEEE 519 guidelines for harmonic mitigation.

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Thursday, March 21, 2024 11:49