Ok, first time messing with a VFD, learning as I go, now gathering the component parts needed for install...
First, the enclosure... should arrive today:
HOFFMAN MX WALL ENCLOSURE WALL-MT IP66 TYPE12/4 GL.PLATE M500500300G 20X20X12
http://www.ebay.com/itm/231331613484
...maybe a bit large, but what I ended up with & should have enought room to keep everything safe & secure.
VFD I'll be using:
JNEV-101-H1
115V 1 Phase In - 230V 3 Phase Out VFD & motor
http://dealerselectric.com/1HP115VoltInputBrookMotorVFDPackage.asp
From advice found elsewhere it was recommended to get a motor side line reactor, came in yesterday:
LR-21P0 LINE REACTOR 230V 1HP 3PH DRIVE INPUT OR OUTPUT, 3% IMPEDANCE
http://www.automationdirect.com/adc...arts_-a-_Accessories/AC_Line_Reactors/LR-21P0
Braking resistor... need some help here in deciding which one I'll need. I seem to have lost the setup CD that came with the VFD from DealersElectric, emailed them last night for selection guidance, but don't know how long that will take for them to get back to me with #'s. There are a gob of them available via eBay, just don't know which one I'll need for the JNEV-101-H1.
From notes saved from somewhere out in the web:
...so, anyone out there know what minimum Ohm & Wattage values are needed to select the right braking resistor for the JNEV-101-H1?
Figured I won't need a breaking resistor all the time, from what I understand, just when tapping blind holes mainly. Since it's getting assembled piecemeal, it would be much easier to install now at the beginning while everything is apart and selecting a good spot in the enclosure.
Still need to gather: remote push button enclosure, switches, wiring, conduits, bla, bla, bla... Thanks for any guidance...
First, the enclosure... should arrive today:
HOFFMAN MX WALL ENCLOSURE WALL-MT IP66 TYPE12/4 GL.PLATE M500500300G 20X20X12
http://www.ebay.com/itm/231331613484
...maybe a bit large, but what I ended up with & should have enought room to keep everything safe & secure.
VFD I'll be using:
JNEV-101-H1
115V 1 Phase In - 230V 3 Phase Out VFD & motor
http://dealerselectric.com/1HP115VoltInputBrookMotorVFDPackage.asp
From advice found elsewhere it was recommended to get a motor side line reactor, came in yesterday:
LR-21P0 LINE REACTOR 230V 1HP 3PH DRIVE INPUT OR OUTPUT, 3% IMPEDANCE
http://www.automationdirect.com/adc...arts_-a-_Accessories/AC_Line_Reactors/LR-21P0
Braking resistor... need some help here in deciding which one I'll need. I seem to have lost the setup CD that came with the VFD from DealersElectric, emailed them last night for selection guidance, but don't know how long that will take for them to get back to me with #'s. There are a gob of them available via eBay, just don't know which one I'll need for the JNEV-101-H1.
From notes saved from somewhere out in the web:
Your VFD manufacturer should be able to provide you with a chart for the correct size of resistor for your drive. A resistor is a resistor, but there are 2 issues at hand.
1) The resistance value (ohms). This is what you need from the VFD manufacturer. If you use the wrong size you will either get inadequate braking, or you may damage the braking transistor if it pulls too much current.
2) The wattage rating. Within any given resistance value, you can get small low wattage resistors or big high wattage ones. The higher the better because they will last longer if they can get rid of their heat faster, but realize that the higher the bigger too. Usually you end up with a compromise. The VFD manufacturer's chart will provide you with a minimum wattage, anything higher than that is OK.
You need to also realize that not all VFDs are created equal. In order to be able to use braking resistors, your VFD must have a "braking transistor", a 7th transistor (switch) which fires when the DC voltage gets too high to shunt the excess into the resistor. Otherwise, the resistor would be burning all the time and burn out. Some VFDs, usually just small ones, have that 7th transistor built-in. Others need it to be external and sell a "Dynamic Braking Kit" which may or may not also include the resistor as well. All of this information should be in the manual for your drive.
...so, anyone out there know what minimum Ohm & Wattage values are needed to select the right braking resistor for the JNEV-101-H1?
Figured I won't need a breaking resistor all the time, from what I understand, just when tapping blind holes mainly. Since it's getting assembled piecemeal, it would be much easier to install now at the beginning while everything is apart and selecting a good spot in the enclosure.
Still need to gather: remote push button enclosure, switches, wiring, conduits, bla, bla, bla... Thanks for any guidance...