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  1. #61
    Join Date
    Sep 2008
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    Riddells Creek, Vic.
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    Default

    I worked out the external terminal controls for stop/start functions using the 3 wire control mode, the manual is a bit confusing but the information is there if you can decipher it.
    I used standard industrial momentary push buttons (22mm),N/O for start and N/C for stop, I don't need reverse for this application. Tomorrow I will wire up a 10K potentiometer, hopefully that will be pretty straight forward.

  2. #62
    Join Date
    Jul 2016
    Location
    Melbourne
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    35
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    1,522

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    I have been running a powtran version of one of these for a while on an arboga (two speed motor) and its been great. The only thing I would not is that theirs does not seem to be configurable for a braking resistor (unlike their 240v output models)

    But its very heavily built for 1.5kw and has good big lug terminals for input and output and came with a usable manual. Was more expensive at about $200

    Sent from my SM-G973F using Tapatalk

  3. #63
    BobL is offline Member: Blue and white apron brigade
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    Feb 2006
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    Perth
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    Quote Originally Posted by caskwarrior View Post
    I have been running a powtran version of one of these for a while on an arboga (two speed motor) and its been great. The only thing I would not is that theirs does not seem to be configurable for a braking resistor (unlike their 240v output models)
    Not all Powtran VFDs (even the 240V) models don't come standard with the built in braking circuitry. To get those with the brake circuit the VFD model has suffix "z" on it.

    But its very heavily built for 1.5kw and has good big lug terminals for input and output and came with a usable manual. Was more expensive at about $200
    What is the model number of yours?

  4. #64
    Join Date
    Nov 2017
    Location
    Geelong, Australia
    Age
    57
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    2,651

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    Latest delivery from Ecogoo
    Bit bigger than the 2.2kW ones, and the terminals are covered up - which was my biggest issue with the 2.2kW version.

    Should test the limits of my workshop power supply once I’ve got a suitable machine to connect it to.







    Steve

  5. #65
    Join Date
    Feb 2012
    Location
    Tamworth, NSW
    Posts
    202

    Default cover for wiring

    This is agreat thread with lots of excellent information - hank you to all thiose who have shared their experiences.

    I have a drill press that I'd like to run with VFD. The motor is 3 phase 415v 0.75kw and cannot be changed to Delta wiring so I will need a unit that allows 1PH input and 3PH output. The Ecogoo look like they fit the bill but I am not a fan of the exposed wiring connections at the front of the 0.75kw units. Has anyone made up an enclosure or a cover for the front of thes elittle units?

    I looked at the Conon offering of VFD but I do not see 1PH input with 3PH 415V output - am I missing something or do these not exist for Conon?

    I do have three phase in the shed - I am just trying to place this where there is no 3PH socket and I have always wanted to have a speed controlled drill press. I undertsand there may be times when I do need to change the belt but at least I would have a range of speeds without a belt change.

    Thanks
    Ian

  6. #66
    Join Date
    Nov 2017
    Location
    Geelong, Australia
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    57
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    2,651

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    I haven't seen a 240-380v model from Conon.
    If you've already got 3ph, the other option would be a 3ph extension lead from the nearest outlet, and just use a 3ph-3ph 380v VFD.

    I agree with wanting to cover up the terminals better on the small Ecogoo - especially around a drill press (least a big curly bit of swarf landed on them and bridged them). I don't see it being a big deal, and don't forget you can remove the control panel from the VFD and locate it remotely - just needing the low voltage control cable between.

    Steve

  7. #67
    Join Date
    Feb 2012
    Location
    Tamworth, NSW
    Posts
    202

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    Quote Originally Posted by OxxAndBert View Post
    I haven't seen a 240-380v model from Conon.
    don't forget you can remove the control panel from the VFD and locate it remotely - just needing the low voltage control cable between.

    Steve
    Thanks Steve - I hadn't though about this. Something else for me to think about.

    The 3PH extension lead would certainly work - it jut ties up one of the two outlets I have and adds cost to the VFD setup (VFD alone versus VFD + cable). The plus on this is also the extension cord allows me to use it now with belt change and buy a VFD later.

    Both excellent points for me to consider.

  8. #68
    BobL is offline Member: Blue and white apron brigade
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    Quote Originally Posted by Danger Mouse View Post
    This is agreat thread with lots of excellent information - hank you to all thiose who have shared their experiences.

    I have a drill press that I'd like to run with VFD. The motor is 3 phase 415v 0.75kw and cannot be changed to Delta wiring so I will need a unit that allows 1PH input and 3PH output. The Ecogoo look like they fit the bill but I am not a fan of the exposed wiring connections at the front of the 0.75kw units. Has anyone made up an enclosure or a cover for the front of thes elittle units?
    This is the enclosure I made for the VFD on my DP.
    I have since replaced that VFD with a Powtran unit.
    complete.jpg

    The Box is Al, from an 1990's Stereo. I added the perspex door.
    There also a fan behind the VFD to vent the enclosure/
    Enclosure1.jpg

    The main reason I used an enclosure was not because of the wiring but because the DP is very close to where I use angle grinders and was concerned about getting grit and metal dust all over the VFD.

  9. #69
    Join Date
    Nov 2017
    Location
    Geelong, Australia
    Age
    57
    Posts
    2,651

    Default Ecogoo 1ph 220v to 3ph 400v inverter - experiences

    Forgot to say earlier - this latest one I bought from the Ecogoo store on AliExpress was delivered in 10 days from when I ordered it.

    Steve

  10. #70
    Join Date
    Sep 2008
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    Riddells Creek, Vic.
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    831

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    Has anyone successfully set up an external potentiometer on one of these? I have set the parameters that I think are applicable and also re-positioned one of the jumpers and it is working but there is a dead spot at the lower end of the pot.

  11. #71
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
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    Good Morning Lex,

    There are several possibilities here, either your pot is faulty, having a long rotation before it hits the resistive track. Or the pot is too high a value for the circuit. Normally the end connections and the wiper connection are virtually a dead short when the wiper is turned to either end, so a resistance test with a multimeter will show that. The last possibility is that there is a break between the lower terminal and the track, which is a faulty pot ! Again a multimeter will show that as a high value measured between the end pins, far greater than the pots marked value.

    Usually 4.7K, 5K or 10K pots are used for speed control, but look in the manual to confirm that value.

    HTH.
    Best Regards:
    Baron J.

  12. #72
    Join Date
    Jan 2012
    Location
    Melbourne
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    149

    Default

    Are logarithmic pots still around?



  13. #73
    BobL is offline Member: Blue and white apron brigade
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    Quote Originally Posted by Neil317 View Post
    Are logarithmic pots still around?
    Yes but I've found them not that good for things like drill presses or lathes.

    A better solution is a speed sensitive pot (expensive) or a two pot (fine and coarse) setup.
    I have these in what is called a H-wiring pattern on my MW lathe and mill

    Panelfinal.jpg

  14. #74
    Join Date
    Sep 2012
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    York, North Yorkshire UK
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    Hi Guys,

    Commonly called "Audio Taper" ! But the VFD speed control is a linear function, not that it would make a noticeable difference.

    Bob's "h" configuration works fine though. (note not a capital "h" though).
    Best Regards:
    Baron J.

  15. #75
    Join Date
    Sep 2008
    Location
    Riddells Creek, Vic.
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    Quote Originally Posted by BaronJ View Post
    Good Morning Lex,

    There are several possibilities here, either your pot is faulty, having a long rotation before it hits the resistive track. Or the pot is too high a value for the circuit. Normally the end connections and the wiper connection are virtually a dead short when the wiper is turned to either end, so a resistance test with a multimeter will show that. The last possibility is that there is a break between the lower terminal and the track, which is a faulty pot ! Again a multimeter will show that as a high value measured between the end pins, far greater than the pots marked value.

    Usually 4.7K, 5K or 10K pots are used for speed control, but look in the manual to confirm that value.

    HTH.
    Thanks John, the pot that I am using is 5K linear and checks out OK with a DMM, I did originally have a 10K in the machine but I changed to this one because I though that the resistance may have been too high and causing the problem I was having, the manual does not specify the type of pot to use. I have used 10K pots on all of my other VFD setups without any similar issues.

    I am using the analog input 1 (A/1) terminal for this and there are 2 parameters relating to the lower limit that I think may have to be set for the specific application, they are P2.02 Lower A/1 limit 0.00 V~10.0V and P2.03 Corresponding setting of lower A/1 limit -100.0~100.0%, the only problem is that I don't know what to set them to or even if it will help with this problem.

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