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By Jerry Smith Electrical control panels are designed and used to control mechanical equipment. Each one is designed for a…

24Jul 201928 Feb 2021

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Introduction to Relays

A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple…

11May 201914 Feb 2021

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Line and Load Reactors Basics

Reactors can protect both motors and variable frequency drives (VFDs) from harmful current and voltage spikes. Reactors also help reduce…

Motors

Operating Motors in Wet or Damp Environments

8 Apr 201922 Apr 2019

By Edward Cowern, P.E. – Baldor/ABB When electric motors are installed in wet or damp areas, the life of the motor is almost always shortened from what would be expected…

Motors

Explosion Proof Motors in Division 2 Areas

6 Apr 201922 Apr 2019

By Edward Cowern, P.E. – Baldor/ABB We have found that one of the most confusing things about explosion proof requirements involves the application of motors in Division 2 areas. To…

Motors

Fans, Blowers, and Other Funny Loads

5 Apr 201922 Apr 2019

By Edward Cowern, P.E. - Baldor/ABB A family of motor applications that tend to confuse people who are not regularly involved with them, is that of Variable Torque Loads. These…

Motors

A Primer on two Speed Motors

5 Apr 201910 Jan 2020

By Edward Cowern, P.E. - Baldor/ABB There seems to be a lot of mystery involved in two speed motors but they are really quite simple. They can first be divided…

Controls…

Basic Principles of Motor Controls

1 Apr 201915 Mar 2020

By Mike Holt. Introduction This post discusses the basic concepts of motor control, including “motor control language” and the types of wiring diagrams used. Motor Control Circuits Motor control circuits…

Drives

AC Tech MCH Series Drives HVAC Application Guide

22 May 201715 Apr 2019

By Lenze/AC Tech. Affinity Laws Most HVAC systems are designed to perform during peak load conditions that rarely occur during the year. Various flow control methods such as inlet guide…

Drives

How Do I Derate Three Phase Inputs For Single Phase Applications?

8 Feb 201718 Apr 2021

Often times those using a Variable Frequency Drive (VFD) may find they need to connect a higher horsepower VFD to a single phase input power source. Since most high horsepower…

Drives

Mating New Variable Frequency Drives to Existing Motors

8 Feb 201710 Apr 2021

Motors connected to VFDs receive power that includes a changeable fundamental frequency, a carrier frequency, and very rapid voltage buildup. These factors can have negative impacts, especially when existing motors…

Soft Start

Why Use a Soft Start?

25 Oct 201627 Feb 2021

A soft starter is an additional device that can be added to a typical AC electric motor that will allow the motor to use a different startup method. The purpose…

Drives

Ultra-Low Harmonic Drives Keep Harmful Harmonics out of Food and Beverages

24 Oct 201611 Apr 2021

By ABB. Customers expect their equipment to handle their products with care and avoid unnecessary shaking or vibrations. While this requirement is an obvious one for the food and beverages…

Precision Automation | Specialists in Industrial Automation

Featured

Basic Questions to Ask About Control Panels

Introduction to Relays

Line and Load Reactors Basics

Operating Motors in Wet or Damp Environments

Explosion Proof Motors in Division 2 Areas

Fans, Blowers, and Other Funny Loads

A Primer on two Speed Motors

Basic Principles of Motor Controls

AC Tech MCH Series Drives HVAC Application Guide

How Do I Derate Three Phase Inputs For Single Phase Applications?

Mating New Variable Frequency Drives to Existing Motors

Why Use a Soft Start?

Ultra-Low Harmonic Drives Keep Harmful Harmonics out of Food and Beverages