Electric Motor
Basic electrical design of a PLC panel (Wiring diagrams)
It is uncommon for engineers to build their own PLC panel designs (but not impossible of course). For example, once the electrical designs are complete, they must be built by an electrician. Therefore, it is your responsibility to effectively communicate… Read more
Feb 27, 2017 | By Edvard Csanyi
Electric Motor
Detailed calculation of currents and power according to the type of load
Currents and power analysis are key factors in any design or redesign of an installation they will enable the source(s) to be sized according to the purpose of the installation, the intended use of the circuits and the receivers to… Read more
Feb 13, 2017 | By Edvard Csanyi
Electric Motor
Practical checks for motor selection on AC adjustable speed drive systems
Important checks to consider in the motor selection for AC adjustable speed drive system: Determine motor enclosure requirements Determine motor torque and speed requirements: Operating speed range Breakaway torque Determine accelerating and decelerating requirements (time and load) Overload Determine type… Read more
Feb 10, 2017 | By Edvard Csanyi
Electric Motor
Ladder logic for special motor control circuits – jogging and plugging
Ladder logic is often used to implement various motor control circuits. Beside standard motor control circuits, there are also special control circuits designed to allow jogging (brief energization of the motor to adjust its positioning) or to prevent plugging (sudden… Read more
Feb 01, 2017 | By Edvard Csanyi
Electric Motor
The influence of voltage unbalance on NEMA motor performance
Voltage unbalance can be more detrimental than voltage variation to motor performance and motor life. When the line voltages applied to a polyphase induction motor are not equal in magnitude and phase angle, unbalanced currents in the stator windings will… Read more
Jan 27, 2017 | By Edvard Csanyi
Electric Motor
Main features that make AC drive the leading motor control method
We can confidently say that the AC drive is the leading motor control method. This technical article deals with a closer look at the different features of the AC drive, and the levels of performance the drive can offer. In this… Read more
Dec 23, 2016 | By Edvard Csanyi
Electric Motor
Sizing of motors and frequency converters for a particular machine load
Manufacturers of electric motors and frequency converters have evolved various methods for quickly selecting the size of motors and frequency converters for a particular machine load. The same basic procedure is used by most applications engineers. These days, applications selections… Read more
Dec 12, 2016 | By Edvard Csanyi
Electric Motor
Traditional Star-Delta motor starting method used in practice
Due to their simplicity, robustness and cost-effectiveness, squirrel cage motors are the preferred choice of industry. During start-up, they develop currents of up to approximately 8 times the rated current and the high starting torque linked to this. The high… Read more
Nov 18, 2016 | By Edvard Csanyi
Electric Motor
Wiring of control power transformer for motor control circuits
The motor branch circuit is usually a segment of a larger electrical distribution network in an industrial plant. The motor circuit supplies the required power to the various control devices in order for them to operate. In some cases, the various… Read more
Oct 28, 2016 | By Edvard Csanyi
Electric Motor
14 electrical characteristics of the motor you should know
Electrical characteristics like voltage, frequency and phase of power supply should be consistent with the motor nameplate rating. A motor will operate satisfactorily on voltage within 10% of nameplate value, or frequency within 5%, or combined voltage and frequency variation… Read more
Oct 24, 2016 | By Edvard Csanyi
Electric Motor
Practical tips for installation and using of thermistor motor protection
Thermistor is a small non-linear resistance sensors, which can be embedded within the insulation of a motor winding, to provide a close thermal association with the winding. It’s made from a metal oxide or semiconductor material. The relationship between resistance… Read more
Oct 14, 2016 | By Edvard Csanyi
Electric Motor
What details a motor nameplate shows and how to use them
We have all seen the motor nameplate attached on the motor side (or on top). All motors have a permanent nameplate which lists all important data, further data is usually available in the motor catalogue. It is important to recognize… Read more
Aug 26, 2016 | By Edvard Csanyi
Electric Motor
Motor wiring guidelines (Cable shielding, grounding and splicing techniques)
This technical article describes shielding, grounding, and splicing techniques for use with motor wiring. This article covers the following topics: Understanding noise in motor power wiring Shielding motor power cables Grounding motor power cable shields Applying ferrite sleeves Splicing motor… Read more
Aug 19, 2016 | By Edvard Csanyi
Electric Motor
6 Common Setting Parameters Available On Most Of The Softstarters
This technical article includes a short description of six common setting parameters available on most of the softstarters. Other settings may be available depending on the type of softstarter and manufacturer. The setting can be done either by adjusting potentiometers, changing… Read more
Jun 27, 2016 | By Edvard Csanyi
Electric Motor
12 Basic Motor Types Used For Industrial Electric Drives
Almost all modern industrial and commercial undertakings employ electric drive in preference to mechanical drive because it possesses the following advantages : It is simple in construction and has less maintenance cost Its speed control is easy and smooth It… Read more
Jun 21, 2016 | By Edvard Csanyi
