Variable Frequency Drive Controllers
|
|
How to connect VFD that is use for motor speed control -3 phases, 440 Volt…
|
Electrical Question from Glabrous about a Variable Frequency Drive
Background: Glabrous, a Electrician from Yangon,Myanmar
Question: I have a little problem. Please answer me.
How to connect VFD (it is use for motor speed control -3 phases, 440 Volt (such as 55KW, 22KW,15KW motors) ) with its control who operator use? What wiring diagrams can use?
Additional Comments: Sure; I think this website can help me and other.
Dave’s Reply:
Thanks for your electrical question Glabrous.
Yes – I am familiar with VFD, Variable Frequency Drives and I have installed quite a few in 3 phase 480 volt motor control applications including large industrial pumps and air handler units. The VFD Control Interface, also known as a Human Machine Interface (HMI) provides start, stop and speed adjustments. The HMI may have a keypad and display screen or led indicator lights to provide information about the settings and operation of the VFD unit. Each VFD unit comes with a helpful installation manual complete with wiring diagrams.
The Following links will assist you with your electrical question:
For more information about Wiring Diagram
Wiring Diagrams
This link is helpful as a Electrician
Electrical Code Articles
Make sure not to miss these Resources for: More eBooks
Home Electrical eBooks
Be Careful and Be Safe – Never Work on Energized Circuits!
For Best Results Consult a Licensed Electrical Contractor.
Locate An Electrical Contractor in Your Area
|
»
You Can Avoid Costly Mistakes!
«
Here's How to Do It:
Wire It Right with the help of my Illustrated Wiring Book
Great for any Home Wiring Project.
|
Perfect for Homeowners, Students,
Handyman, Handywomen, and Electricians
Includes:
Wiring GFCI Outlets
Wiring Home Electric Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring Light Switches
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
NEC Codes for Home Electrical Wiring
....and much more.
|
|
Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.
Electrical Tips to Help You Wire it Right
|
 |
The Safest Way to Test Electrical Devices and Identify Electric Wires!
The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use. |
 |
The Quickest Way to Check for Faulty Electrical Wiring!
The Plug-In Outlet Tester
This is the first tool I grab to troubleshoot a problem with outlet circuit wiring. This popular tester is also used by most inspectors to test for power and check the polarity of circuit wiring.
It detects probable improper wiring conditions in standard 110-125 VAC outlets
Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency
Lights indicate if wiring is correct and indicator light chart is included
Tests standard 3-wire outlets
UL Listed
Light indicates if wiring is incorrect
Very handy and easy to use. |
 |
Strip Off Wire Insulation without Nicking and Damaging the Electric Wire!
The Wire Stripper and Wire Cutter
My absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires.
This handy tool has multiple uses:
The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation.
The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets..
The wire stripper will work on both solid and stranded wire. This tool is Very Handy and Easy to Use. |
|
I have a little problem. How do I connect a VFD (Variable Frequency Control) that is used for motor speed control that would be used for a 3-phase,440 volt motor, such as 55kw,22kw,15kw motor. With its control operator uses what wiring diagram can be used?
Hi Haileyesus,
The VFD must be compatible with the motor that it will be used for. Motors are rated in HP, and then the circuit power that is available. The VFD must be sized for the specific motor it will be used to control. Various control operators are available depending on the VFD brand that is selected. Some operators are installed into the enclosure of the VFD, and remote operators are available to enable manual or automatic motor speed adjustments from remote locations such as a control cabinet or SCADA, BMS or EMS System. The VFD will come with an installation manual and wiring diagrams which will assist you in the installation.
Dave