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  1. #1
    Join Date
    Feb 2012
    Location
    chile
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    5

    Default I need help with the electric

    Hi to all I'm new to this forum and need some help,

    I have bought about 1 years ago a new motor and a so called "union graduate remote pendant" for my Myford super 7 lathe. The Teco 7300CV Inverter I had bought some time be for.
    I found now the time to install all this to my Myford and it works all fine FWD and Stop are working, BUT the Revers switch on the pendant will not work.
    I put all the parameter I got with the remote pendant in to the Teco 7300CV but no Revers.
    Revers is enabled set to 0000
    Set to 3- wire control 0002
    Parameter 5-00 0000
    Parameter 5-01 0001
    Parameter 5-02 0002
    (But in the Manuel is written "As 3 wire control mode is selected, the terminal S1, S2 and S3 is not controlled
    by 5-00, 5-01 and 5-02."!)

    When I switch from the Teco it self in to REV it will work fine.
    If I push the Rev from the remote pendant the rev light will blink on the Teco ( only as long as I press the Rev) but nothing will happen.
    If I press first the REV and than the FWD button and hold the REV button the motor will start running in REV. When I release the REV button the motor will stop running.
    I hope some one can help me to solve this problem. I add some photos from the wiring of the Teco and the pendant.
    The white cable is 24V (PNP on the Teco selected)
    yellow is S1
    brown is S2
    blue is S3

    Thanks Olaf
    http://www.model-engineer.co.uk/site...0038%20(3).jpg

    http://www.model-engineer.co.uk/site...0039%20(2).jpg

    http://www.model-engineer.co.uk/site...8/imgp0040.jpg


  2. #2
    Join Date
    Jul 2010
    Location
    Melbourne
    Posts
    9,088

    Default

    Hi Olaf,
    As I understand it your VSD is operating exactly as it should and I dont see an easy way of fixing it with the switch you have*. You could add another switch(easy but wont use the REV button you have) or a another circuit(harder but will let the buttons operate as I think you want them to)

    Stuart

    *the manual shows you need a toogle switch from com to S3. You seem to have a momentary switch

  3. #3
    Join Date
    Jun 2008
    Location
    Victoria, Australia
    Age
    74
    Posts
    5,080

    Default

    Hi Olaf,

    Stuart has it right, you have done everything correctly and the drive is working as it should, but I think the problem is that the inputs are not FWD/STOP/REV they are ...

    RUN
    STOP
    DIRECTION (FWD/REV)

    I'll see if I can draw a cct that will work with your pendant..

    Regards
    Ray
    PS I have a TECO drive on my mill, so I must have a drive manual somewhere...

  4. #4
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    Jul 2010
    Location
    Melbourne
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    Default

    Hi Ray,
    I found googled this one, which isn't much like the one for my Teco, in fact it looks more like my Huanyang VFD than my Teco, as does the "English"
    http://www.tecowestinghouse.com/Manu...al%2011-05.pdf
    Pages 4-22 and 4-23(or 54 and 55 of the pdf)
    I can't make it work without adding some latching relays and a seperate V source. You on the other hand might be able to.

    Stuart

  5. #5
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    Jun 2008
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    Victoria, Australia
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    Default

    Hi Olaf,

    I think you will need to add latching relays to make the pendant work with momentary contacts on fwd reverse.

    You will need at least two SPDT 24V relays, I can draw a circuit for you if you want.

    Regards
    Ray

    PS Stuart, thanks for the link to the manual.

  6. #6
    Join Date
    Feb 2012
    Location
    chile
    Posts
    5

    Default

    Sorry for my late replay. This is exactly not what I like to hear, that I have to add some parts because I know nothing about soldering or electric. I bought this pendant from Neton Tesla lathespeedcontrol they sell this normally with there MITSUBISHI inverter. But I was told by the owner that it will work also on my Teco.

    Has this not also some thing to do with" 3 wire control mode is selected"


    What if found also out in the meanwhile is if I press the
    REV button and hold it and push than the FWD button the motor will run in REV as
    long I keep pushing the REV button or press on stop!



    Thanks Olaf

  7. #7
    Join Date
    Jun 2008
    Location
    Victoria, Australia
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    Default

    Hi Olaf,

    Three wire control works as follows.

    RUN switch is a momentary contact push to close.
    STOP switch is a momentary contact push to open.
    FWD/REV switch is a TOGGLE switch that selects forward/reverse.

    Your pendant doesn't have a toggle switch...

    I would go back to the supplier, if they say it's supposed to work, ask them how.

    I can make it work with your FWD STOP REV pendant, but it will require two relays and some wiring... do you have someone who can do that for you?

    Regards
    Ray

  8. #8
    Join Date
    Jul 2010
    Location
    Melbourne
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    9,088

    Default

    Hi Olaf,

    If you dont want to solder etc, you could just add a simple switch(with the right switch you would just need a screwdriver). The switch would then control FWD or REV. The REV push button you have would then do nothing and the FWD push button would become a START button(in either fwd or rev depending on how the other switch is set).
    Quote Originally Posted by olandrea View Post
    Has this not also some thing to do with" 3 wire control mode is selected"
    This is the only mode your VSD will work in with your current remote setup.

    Quote Originally Posted by olandrea View Post
    What if found also out in the meanwhile is if I press the
    REV button and hold it and push than the FWD button the motor will run in REV as
    long I keep pushing the REV button or press on stop!
    I'm not sure I understand this. You are saying it runs when you have your finger on the stop button?


    Stuart
    Last edited by Stustoys; 3rd Feb 2012 at 11:40 PM. Reason: changed some switched to push buttons

  9. #9
    Join Date
    Jun 2008
    Location
    Victoria, Australia
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    Default

    Hi Olaf,

    Here's a circuit to use that pendant with the teco drive.



    If you don't have any experience with wiring this sort of thing, look around for a local electrician.

    Regards
    Ray

  10. #10
    Join Date
    Feb 2012
    Location
    chile
    Posts
    5

    Default

    Hi Stuart,
    I payed 150$ for the remote and than I have to ad a switch?

    The following is working:
    Press FWD it will run in FWD
    Press Stop it will Stop
    Press REV it will not run in REV
    Press REV and than FWD it will go in REV as long I keep pressing REV, If I l stop pressing or press the stop button it will stop running in REV.

    Thanks Olaf

  11. #11
    Join Date
    Feb 2012
    Location
    chile
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    Default

    Thanks Ray,
    hopefully John from Neton Tesla will let me know this weekend if there is a other possibility how to run the remote on the Teco.
    If not, than I have a problem.
    Olaf

  12. #12
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    Default

    Hi Ray,
    Just for my own interest rather than anything else. Leaving the VSD setting as they are, would this work?(sorry for the butcher job on your drawing, I took your name of it so people didnt think it was you.)

    Stuart

  13. #13
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    Default

    Hi Stuart,

    According to the manual when you have FWD and REV active together the drive STOPS

    So you need 2 relays... the idea of flipping polarity and leaving the inputs as PNP would work however.

    Regards
    Ray

  14. #14
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    Default

    Quote Originally Posted by RayG View Post
    According to the manual when you have FWD and REV active together the drive STOPS
    Ummm, not in 3 wire control mode(?)
    Isnt this eaxctly what Olaf is doing when he presses both fwd and rev at the same time and it runs backwards?

    24V to S1,S2 and S3 at the same time.

    Or do I have it back to front again?

    Stuart

  15. #15
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    Location
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    Default

    Hi Stuart,

    Ah.. yes, but in 3 wire mode the switches are RUN, STOP, DIRECTION not as the pendant is labelled, which is FWD-STOP-REV.

    I was assuming that the mode would be changed to use the FWD-STOP REV-STOP mode so as to be the same as the pendant switches are labelled...

    No wonder Olaf is confused..

    Regards
    Ray

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