Thanks: 0
Needs Pictures: 0
Results 1 to 11 of 11
Thread: VFD on a Hercus 260
-
26th Apr 2020, 09:42 PM #1Intermediate Member
- Join Date
- Mar 2012
- Location
- South Australia
- Posts
- 33
VFD on a Hercus 260
Have just acquired a 260 with 3ph motor. Fitted with ASEA 0.37kW 415V connected as Y. Will this take VFD?
-
26th Apr 2020, 10:35 PM #2Most Valued Member
- Join Date
- Mar 2011
- Location
- Southern Flinders Ranges
- Posts
- 1,553
The technically correct answer is yes, but only if you have 415 supply
The answer you are probably more looking for is no or maybe if you want to run a single to 3phase unit. It is maybe if you have access to the far end of the windings in the terminal box to convert it to Delta, if you don’t the answer is no.
A single phase motor, whilst not as convenient, is cheaper than a VFD conversion hands down every time, unless you get either the motor or the VFD or both very cheaply.
-
26th Apr 2020, 10:54 PM #3Member
- Join Date
- Apr 2020
- Location
- Hackham West
- Age
- 55
- Posts
- 55
Are you asking because you have single phase only in your shed?
-
26th Apr 2020, 10:57 PM #4Member: Blue and white apron brigade
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 7,189
If the motor is like the ASEA motor on my Hernia mill they are easily convertible to ∆ in the motor terminal box.
https://metalworkforums.com/f189/t20...ll#post1935297
You will need to know what you are doing.
A suitable VFD can be had for under a $100.
If it was me and it was possible I would replace the motor with something that is about double the power.
This will give you a wider VFD speed range with full power.
Maybe have a read of the document on this page https://www.woodworkforums.com/f271/vfds-newbies-232742
-
27th Apr 2020, 02:44 AM #5Intermediate Member
- Join Date
- Mar 2012
- Location
- South Australia
- Posts
- 33
-
27th Apr 2020, 05:43 AM #6Member
- Join Date
- Apr 2020
- Location
- Hackham West
- Age
- 55
- Posts
- 55
Okay...if you post a pic of the inside of your terminal box then i can advise you whether you will be able to change to delta like bob said. If it's possible then i'll tell you how to do it
-
27th Apr 2020, 07:58 AM #7Most Valued Member
- Join Date
- Mar 2011
- Location
- Southern Flinders Ranges
- Posts
- 1,553
-
27th Apr 2020, 10:32 AM #8Member: Blue and white apron brigade
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 7,189
Humm . . . . .I've had a 1HP motor running on my Hercus from as low as 15Hz up to 120 Hz for 9 years, sometimes for hours at 25Hz - not even a hint of a problem. Not many of us operate at production shop levels of output.
I would not normally advise going below about 15Hz but here's an example where I found I can. On my small WW lathe I heat form 6" PVC "bell mouth hoods" with a hot air gun for dust extraction systems. Just like my MW lathe I have the same VFD and a 1HP donk but running as low as about 10Hz. The forming process takes about 5 minutes at light load and then about 3 minutes at higher load. The motor does indeed get slightly warm under high load but then when cooling down the fully formed hood the motor speed is increased to 25Hz and the dust extraction system is turned on for about 5 minutes - this pulls ~1200 CFM of shed air across the lathe and from around the motor and quickly cools the motor back to RT again.
IMG_1876.jpg
I have made many hundreds of these hoods for mens shed - the most likely thing I will have to replace in the near future is the live centre bearing.
-
27th Apr 2020, 02:14 PM #9Intermediate Member
- Join Date
- Mar 2012
- Location
- South Australia
- Posts
- 33
-
27th Apr 2020, 02:27 PM #10Most Valued Member
- Join Date
- Mar 2011
- Location
- Southern Flinders Ranges
- Posts
- 1,553
Bob, you missed the point.
The advice you offered was factually incorrect.
-
28th Apr 2020, 12:06 AM #11Member
- Join Date
- Apr 2020
- Location
- Hackham West
- Age
- 55
- Posts
- 55
Similar Threads
-
Hercus #3A or #1 T&C smaller wheel guard and Hercus #3A wheel shaft pulley.
By lamestllama in forum METALWORK - Machinery, Equipment, MARKETReplies: 8Last Post: 30th Aug 2019, 12:01 PM -
Hercus 9" vs hercus 260 ????????
By bitza500 in forum THE HERCUS AREAReplies: 1Last Post: 26th Jun 2009, 10:50 PM -
Hercus parts on Ebay from Hercus
By bollie7 in forum THE HERCUS AREAReplies: 0Last Post: 8th Oct 2008, 02:59 PM