"Industrial-Electricity.com" — Information and Resources for Students and Industry

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

NRI Schools--Computer Courses (1995-1998)

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

Electrical Safety Fundamentals

• Hazards of Industrial Electricity
• Electrical Safety Equipment
• Electrical Maintenance & Safety
• Low-Voltage Safety
• more...

Industrial Electricians Standard Guide of Electricity

• Industrial Electricians and Electrical Occupation
• Electrical Safety Fundamentals
• more... (complete Guide index)

Power Systems, Electric Machines and Drives

On our sister site: Basics of Industrial Motor Control

Electric Utility Power Systems

Generating Electrical Power: INTRO; HYDROPOWER GENERATING STATIONS; THERMAL GENERATING STATIONS; NUCLEAR; QUIZ

Ultimate Guide to Basic Power System Protection

• Intro and Article Index
• Do We Need to Protect Power Systems?
• Grounding
• more ...

Ultimate Guide to Industrial Power Distribution

• Intro / Article Index

Power System Analysis and Design

• Article Index
• Fundamentals
• more ...

Advanced Elec. Installations

• Inspection, Testing and Commissioning
  • Intro
  • Electrical Fault Diagnosis and Fixes
  • Electrical safety systems
  • Electrical Testing

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. read more...

Field Guide to Industrial Electrical Gear

above: Lenze Servo Drive

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