Can I use this VFD

Do you use it with a 2HP motor? And how hard is it to wire if you basically know nothing like I do.

Thanks

Pad
 
Yes, I use it with a 2HP motor. The manuals are availalbe for download at the link I posted above. Wiring is pretty easy as long as the 3 phase motor that you get comes with the leads labled. If you are using a used 3 phase motor that does not have wires labled, yo will have some work to do in order to figure our which wires go where.

Eric
 
Padrig said:
Do you use it with a 2HP motor? And how hard is it to wire if you basically know nothing like I do.

Thanks

Pad
Click to expand...

I believe it is referred to as a No Brainer:thumbup::D

Three wires from vfd to your motor; use the correct gage wire rated for the motor you are operating, if the motor runs the wrong direction, change any two of the wires at the vfd, that will change the direction of rotation.
Some vfd's can be set to run, different hP motors; they have jumpers that you set to the corresponding hp for your particular motor.
Read the directions that comes with the unit, they are usually pretty straight forward.

Best of luck to you, Fred
 
Get a 2hp 220v/440v three phase motor. Some VFD can do upto the rating but IMHO if it's rated for 2hp, get a 2hp and you won't be left wanting.

BTW: Most three phase motors can be wired either 220v or 440v, just refer to the wiring diagram on the motor itself. I nearly burned out my motor by using the diagram for the VFD.

To answer your second question, if I can do it then it's not too hard.
 
Padrig, you can use it, but understand that an IP20 enclosure isn't going to offer any protection at all in a knifemaking situation. Any metal dust is going to find it's way to the inside of that and blow it up. I started w'a similar unit and kept it well away from the grinder with a filter around the whole thing and still killed it fairly quickly. I also have the advantage of having a Torit metal dust collector at my grinder. My advice, having been through this, would be to save the money to get a vfd w'Nema 4 enclosure. Best to buy the right tool once...........good luck

Rick
 
Pad

I must re-iterate what Rick said about keeping the metal dust out of your VFD. You have two alternatives. The first is to find a NEMA-4 rated VFD. It will probably be about double the cost per hp when compared to an IP-20 model. Your second alternative requires that you get a copy of the manual and do some reading but will cost you less money. You can mount your VFD well away from your grinder, in a clean area. You would then install some control switches (and maybe a speed control pot) near your grinder and connect them to your VFD with some small wires. Let me know if you want some help with this. My day-job is designing the power stages for large VFD's (100-500hp).

Phil
 
This is the unit I purchased to run my 3 phase mill.
It shows the Nema 4 enclosure. Keeping the drive covered is absolutely a must, as stated above .
9528 - KBAC-29 Gray Inverter


  • Part No: 9528
  • Retail Price: $446.00
  • Sale Price: $343.09
  • Qty:

9528.jpg

The KBDA-29 Adjustable Frequency Drive is a variable speed control housed in a rugged NEMA-4X /IP-65 washdown and watertight die-cast aluminum enclosure. It is designed to operate from 208/230 Volts, 50/60Hz, single or 3-phase AC input, and operates 208-230 Volt, 50/60Hz, 3-phase AC induction motors through 9.0 Amps RMS. The sine wave coded Pulse Width Modulated (PWM) output operates at a frequency of 16kHz which provides high motor torque, high efficiency and low noise.
Setting the drive to specific applications is accomplished using the Multi-Function Keypad. To facilitate programming, all similar functions are presented in common groups. For more advanced programming, PC based Drive-Link� software is available.
The 4-Digit LED Display provides readout of drive operating parameters and programming functions and displays Output Frequency, Motor RPM, Output Current, Output Voltage, Bus Voltage, Function Codes, and Values, Fault Codes and Custom Units. The LEDs provide indication of the drive�s status and operating mode (Hz, PGM, LCL/REM, STOP, FWD, REV, OL and JOG/REM).
Main features include adjustable RMS Current Limit with I2t Motor Overload Protection. Flux Vector Compensation with Static Auto-Tune and Boost provides high torque and excellent load regulation over a wide speed range. Power Start � delivers over 200% motor torque to ensure startup of high frictional loads. Programmable Injection Braking provides rapid motor stop. Electronic Inrush Current Limit (EICL�) eliminates harmful AC line inrush current, which allows the drive to be line switched. A Multi-Function Output Relay is provided, which can be used to turn on or off equipment or to signal a warning if the drive is put into various modes of operation. The drive is suitable for machine or variable torque (HVAC) applications.
 
rjudoka said:
Padrig, you can use it, but understand that an IP20 enclosure isn't going to offer any protection at all in a knifemaking situation. Any metal dust is going to find it's way to the inside of that and blow it up. I started w'a similar unit and kept it well away from the grinder with a filter around the whole thing and still killed it fairly quickly. I also have the advantage of having a Torit metal dust collector at my grinder. My advice, having been through this, would be to save the money to get a vfd w'Nema 4 enclosure. Best to buy the right tool once...........good luck
Rick
Click to expand...


Very good point Rick. I sometimes forget about this in my shop since my non NEMA 4 VFD is mounted in a clean area well away from my grinder. I actaully share one VFD with serveral machines. All switching is done at local machines. I've got a custom start stop switch, tachometer that reads in RPM or SFM, ability to control forward/reverse, JOG and speed all remote from VFD. Thanks for pointing this out Rick!

Eric
 
Thanks folks, Phil (pso) will help me try to work on a setup like you efleming.
What I am wondering is what is needed when you say "clean" environement. Does it have to be very far away like another room or does the workbench/measuring/assembling area of the shop (read small garage) is relatively dust free, well conductive dust anyway?

Thanks again, without you guys I would probably have to change hobby for macrame, origami or something. ;)

Pad
 
Padrig said:
What I am wondering is what is needed when you say "clean" environement. Does it have to be very far away like another room or does the workbench/measuring/assembling area of the shop (read small garage) is relatively dust free, well conductive dust anyway?
Pad
Click to expand...

Clean means no metal dust. In my case I have a very heavy duty dust collection system and a fan system sucking air outside. My non NEMA-4X enclosure is about 20 ft from my grinder and around a corner. After a full day in the shop with grinder usage, I can run my finger on top of my VFD and still have it be squeeky clean with no dust. That is the type of environment you want if not going with a NEMA-4X enclosure. Hope this helps...

Eric
 
Get the the IP20 VFD, build a box around it with generic air filters on top and bottom so the fan can move air. There is another thread showing Matt Walker that made a clean box out of a toolbox with air filters. He said he got the air filters from the auto parts store for cheap. If you are looking at the FM50, you can buy and use remote switches mounted to the front of the box. He mounted switches for power, rotation, and speed.

Thread
http://www.bladeforums.com/forums/showthread.php?t=568784

Link to his site
http://www.matthewdwalker.com/visit_my_studio/vfd_mounted_in_a_tool_box_w.html


That is what I am going to do here very shortly. It will be doing double duty for both my grinder and a modded bandsaw. All I have to do is make plugs for connections between VFD and both machines (not at the same time...:eek:)
 
You must log in or register to reply here.
Back
Top