Industrial Automation
Applying Variable Speed Drives To Control Pressure
Using variable speed drives (VSDs) to control pressure reduces the electrical energy requirements by reducing the amount of hydraulic energy actually produced. A basic pressure control pump station is equipped with one pump controlled by one variable speed drive (VSD)…. Read more
Oct 03, 2015 | By Edvard Csanyi
Industrial Automation
Modernizing An Old Hardwired Relay Logic With Modern PLC System
This technical article presents the modernization of a machine control system that will be changed from an old hardwired relay logic to PLC programmed logic. The field devices to be used will remain the same, with the exception of those… Read more
Sep 09, 2015 | By Edvard Csanyi
Industrial Automation
Selection of a suitable softstarter for application with conveyor belts
Conveyor belts can have a lot of different looks and directions of use. It is a typical constant torque load with low to high braking torque depending on how heavy it is loaded. Let’s take a look at the most… Read more
Sep 07, 2015 | By Edvard Csanyi
Industrial Automation
3 Conditions That Can Damage Your PLC
In certain applications, the operating environment may have extreme conditions that require special attention or otherwise can seriously damage PLCs. These adverse conditions include excessive noise and heat and nuisance line fluctuations. This article describes these conditions and provide measures… Read more
Aug 31, 2015 | By Edvard Csanyi
Industrial Automation
Few Good Tips For Estimating and Optimizing Pumping Energy Costs
To help estimate pumping energy costs: To compare different system and pumping equipment proposals and make an intelligent choice, three facts will need to be established: Will the process require varying flow rate, and, if so, must it be continuously variable… Read more
Aug 28, 2015 | By Edvard Csanyi
Electrical Lectures
PLC Latch (Flip-Flop) Logic Function – Like a Sticky Switch!
More complex systems cannot be controlled with combinatorial logic alone. The main reason for this is that we cannot (or choose not to) add sensors to detect all conditions. In these cases we can use events to estimate the condition… Read more
Aug 24, 2015 | By Edvard Csanyi
Industrial Automation
Installing Sensors Incorrectly As a Mistake #2 In Instrumentation
Generally speaking, there are four ‘Poors’ that can lead to incorrectly installing instrumentation sensors: Poor placement Poor control Poor protection Poor grounding Each of above sensor ‘poors’ are described below, and by the way… have you read what is the mistake No.1… Read more
Aug 21, 2015 | By Edvard Csanyi
Industrial Automation
Selecting Wrong Sensor As a Mistake #1 In Instrumentation
Despite ongoing advancements in measurement technology, instrumenting a process for feedback control remains a technical challenge. Today’s sensors are certainly more sophisticated than ever before, and fieldbus technology has simplified many installation issues considerably. Nonetheless, much can still go wrong… Read more
Aug 17, 2015 | By Edvard Csanyi
Industrial Automation
4 Steps To Follow During Commissioning of a PLC System
Yes, PLC programs are never final, it is always possible to make corrections and subsequent adaptations to new system according the customer requirements. Even during commissioning, program changes are often necessary. The commissioning of a system can be divided into… Read more
Aug 15, 2015 | By Edvard Csanyi
Electric Motor
Comparison of Soft Starting and Frequency Converter Motor Starting
A soft starter is, as you would expect, a device which ensures a soft starting of a motor. A softstarter has different characteristics to the other starting methods. It has thyristors in the main circuit, and the motor voltage is… Read more
Aug 12, 2015 | By Edvard Csanyi
Electrical Lectures
What can a PLC do? Why do we use them?
“PLC” means “Programmable Logic Controller”, that’s clear. The word “Programmable” differentiates it from the conventional hard-wired relay logic. It can be easily programmed or changed as per the application’s requirement. The PLC also surpassed the hazard of changing the wiring…. Read more
Jul 15, 2015 | By Edvard Csanyi
Industrial Automation
Let’s develop the simple PLC program for lighting control system
A lighting control system is to be developed. The system will be controlled by four switches, SWITCH1, SWITCH2, SWITCH3, and SWITCH4. These switches will control the lighting in a room based on the following criteria: Any of three of the… Read more
Jul 06, 2015 | By Edvard Csanyi
Electric Motor
The basics of built-in motor protection for engineers beginners
In order to avoid unexpected breakdowns, costly repairs and subsequent losses due to motor downtime, it is important that the motor is fitted with some sort of protective device. This article will deal with built-in motor protection with thermal overload… Read more
May 15, 2015 | By Edvard Csanyi
Electric Motor
Motor connection for clockwise and counterclockwise direction of rotation
Star-delta (in North America the designation “wye-delta” is commonly used instead) starting is the simplest method for reducing the starting current of a motor. The technique can be used with all squirrel-cage induction motors that are delta-connected for normal operation… Read more
May 13, 2015 | By Edvard Csanyi
Industrial Automation
Field data interface devices as eyes and ears of a SCADA system
Field data interface devices form the “eyes and ears” of a SCADA system. Devices such as reservoir level meters, water flow meters, valve position transmitters, temperature transmitters, power consumption meters, and pressure meters all provide information that can tell an… Read more
May 11, 2015 | By Edvard Csanyi
