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Dec 4th 2016, 02:49 PM   #1
 Boatdriver's Avatar
 
  Jan 2016
  Washington

  07' Tuono, 08' GSXR 1K Track, 15' Kawi Concours
Variable Frequency Drive

Anyone on here have the know how to test and troubleshoot variable frequency drives? I have a Delta VFD-B that quite working on my lathe.
Dec 4th 2016, 11:38 PM   #2
 Thumperpilot's Avatar
 
  Jan 2016
  Rome

  SV650S, CRF450R, and others
Pm'd you. I have a moto buddy that knows cool stuff like that. He's in Ferndale too.
Dec 5th 2016, 06:34 AM   #3
 Tripledij's Avatar
 
  Jan 2016
  Custer WA

  Aprilia Tuono
When it comes to electrical, I am not very moxie. I had enough problems with my rotary phase converter that runs my lathe to want to pull out what little hair I have left.

Here are two good forums that have guys with experience with vfds and machine tools.

Transformers, Phase Converters and VFD

General
Dec 5th 2016, 07:28 PM   #4
 dragracer1951's Avatar
Moderator
 
  Jan 2016
  Bremerton

  07 XB12 Buell Lightning
I do. What's the issue?
Dec 5th 2016, 09:29 PM   #5
 Boatdriver's Avatar
 
  Jan 2016
  Washington

  07' Tuono, 08' GSXR 1K Track, 15' Kawi Concours
Quote:
Originally Posted by Tripledij View Post
When it comes to electrical, I am not very moxie. I had enough problems with my rotary phase converter that runs my lathe to want to pull out what little hair I have left.

Here are two good forums that have guys with experience with vfds and machine tools.

Transformers, Phase Converters and VFD

General
Thanks, I'll give them a look. Electrical is not my forte either
Dec 5th 2016, 09:46 PM   #6
 Boatdriver's Avatar
 
  Jan 2016
  Washington

  07' Tuono, 08' GSXR 1K Track, 15' Kawi Concours
Quote:
Originally Posted by dragracer1951 View Post
I do. What's the issue?
The unit is a Delta VFD-B 1.5kW/2hp 230v 1 phase. It is attached to a Powermatic 4224 wood lathe. I bought the lathe new back in 2003ish. Normally when the lathe is turned on with the headstock at idle you can hear the VFD fan humming. I had the lathe on, but at idle while I was talking to someone. During the conversation the unit went silent. The digital face of the unit is now dark. I checked the power in and that seems fine. The power out to the motor checked inside the VFD is dead. There is a digital RPM indicator on the headstock and it is functioning and will indicate RPM change when the chuck is rotated by hand. The lathe has a push/pull on/off switch on the headstock and a toggle type switch on a long cord that can be used to shut down the lathe if for some reason you can't reach the other switch. The speed of the lathe is controlled by a rheostat knob located on the headstock. The switches and rheostat were tested for continuity and seem fine.

Any advice would be greatly appreciated.

Thanks
Dec 6th 2016, 08:42 AM   #7
 Texasl's Avatar
Moderator
 
  Jan 2016
  Northeast Olalla

  07 Guzzi
Quote:
Originally Posted by Boatdriver View Post
The unit is a Delta VFD-B 1.5kW/2hp 230v 1 phase. It is attached to a Powermatic 4224 wood lathe. I bought the lathe new back in 2003ish. Normally when the lathe is turned on with the headstock at idle you can hear the VFD fan humming. I had the lathe on, but at idle while I was talking to someone. During the conversation the unit went silent. The digital face of the unit is now dark. I checked the power in and that seems fine. The power out to the motor checked inside the VFD is dead. There is a digital RPM indicator on the headstock and it is functioning and will indicate RPM change when the chuck is rotated by hand. The lathe has a push/pull on/off switch on the headstock and a toggle type switch on a long cord that can be used to shut down the lathe if for some reason you can't reach the other switch. The speed of the lathe is controlled by a rheostat knob located on the headstock. The switches and rheostat were tested for continuity and seem fine.

Any advice would be greatly appreciated.

Thanks
Sorry to hear about your drive troubles, enough so that it brought my 29 years of industrial plant equipment maintenance out of retirement. (Yeah, I used to do this stuff for a living before collecting a pension and teaching motorcycle safety became much more desirable. )

I rooted around on the internet and found the user's manual for the VFD015B21B drive, but I was unable to get the actual internal diagrams. That is not too surprising, especially in the small drive arena. There isn't a lot of user servicing possible on these small units unless external parts (switches, rheostats/control inputs, displays, etc.) have failed. About the only thing that you haven't said that you checked would be the existence of the +24 VDC. I would guess that it is not there, indicating a loss of the internal power supply for the controls, based on the dead keypad and digital faceplate. If that is the case, unless you are just a total electronic geek what you probably have is a really fancy paperweight. That's the bad news.

The good news? You can get a brand new drive unit for around $400.00, which is the direction that I would take. Thirteen years is a lot of service for one of these small drives.

Good luck.
Dec 6th 2016, 08:59 AM   #8
 Boatdriver's Avatar
 
  Jan 2016
  Washington

  07' Tuono, 08' GSXR 1K Track, 15' Kawi Concours
Quote:
Originally Posted by Texasl View Post
Sorry to hear about your drive troubles, enough so that it brought my 29 years of industrial plant equipment maintenance out of retirement. (Yeah, I used to do this stuff for a living before collecting a pension and teaching motorcycle safety became much more desirable. )

I rooted around on the internet and found the user's manual for the VFD015B21B drive, but I was unable to get the actual internal diagrams. That is not too surprising, especially in the small drive arena. There isn't a lot of user servicing possible on these small units unless external parts (switches, rheostats/control inputs, displays, etc.) have failed. About the only thing that you haven't said that you checked would be the existence of the +24 VDC. I would guess that it is not there, indicating a loss of the internal power supply for the controls, based on the dead keypad and digital faceplate. If that is the case, unless you are just a total electronic geek what you probably have is a really fancy paperweight. That's the bad news.

The good news? You can get a brand new drive unit for around $400.00, which is the direction that I would take. Thirteen years is a lot of service for one of these small drives.

Good luck.
Thanks for the info. I kind of figured that this is going to be the case. Another question. The VFD is marked 2hp. The motor data plate is 3 hp. Should I order the same or a 3hp VFD?
Dec 6th 2016, 09:16 AM   #9
 Texasl's Avatar
Moderator
 
  Jan 2016
  Northeast Olalla

  07 Guzzi
I would advise up sizing, if only for a better operational safety margin, although it probably isn't critical unless you are hogging out ironwood bowls as hard as you can.

Sent via SM-G900V
Dec 6th 2016, 06:26 PM   #10
 Boatdriver's Avatar
 
  Jan 2016
  Washington

  07' Tuono, 08' GSXR 1K Track, 15' Kawi Concours
Stabbed just about everything inside the VFD and didn't find +24 V DC anywhere. Looks like I will be ordering one.

Thanks for all of the input
Dec 7th 2016, 06:56 AM   #11
 Texasl's Avatar
Moderator
 
  Jan 2016
  Northeast Olalla

  07 Guzzi
Make sure to closely check all of the peripherals before installing the new drive, in the off chance one of them was what took the drive out. It's a small chance, but testing them does not eat any groceries.
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Dec 8th 2016, 09:30 PM   #12
 Boatdriver's Avatar
 
  Jan 2016
  Washington

  07' Tuono, 08' GSXR 1K Track, 15' Kawi Concours
Will do. Thanks again for the info
Texasl likes this.
Dec 9th 2016, 09:14 AM   #13
 Naza's Avatar
 
  Feb 2016
  Rent'n

  2002 Honda RC51, 2005 Honda RC51
Quote:
Originally Posted by Boatdriver View Post
Thanks for the info. I kind of figured that this is going to be the case. Another question. The VFD is marked 2hp. The motor data plate is 3 hp. Should I order the same or a 3hp VFD?
I'd thought I would chime in here with my xp's.

I use Automation Direct drivers for my destemmer (2 HP 50hz 3ph motor) They are inexpensive and have lots of options.
https://www.automationdirect.com/adc..._VAC)/GS2-22P0

Here is the 3HP model that might fit your needs better.
https://www.automationdirect.com/adc..._VAC)/GS2-23P0

If one of these blew up, I just get another for about $300.

Ya really don't need to up the HP rating until you get over 3hp.

Now for my Wakushaw 130 3" must pump that is a 5HP motor, I use this expensive bad boy, but it can handle a one phase input.

https://www.galco.com/buy/Control-Techniques/SK2203
If this dude blows up, I am hurting, but worth it to run a $15k pump off of one phase power.

Cheers
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