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IndustryArena Forum > CNC Electronics > Spindles / VFD > Wiring a dryer plug/cable to VFD for a Teknomotor spindle
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  1. #1
    Join Date
    Jul 2003
    Posts
    138

    Wiring a dryer plug/cable to VFD for a Teknomotor spindle

    Hello, I am running a home shop and would like to use my dryer outlet to power my VFD which is a Lemze 3HP model ESV222N02YXB.

    My problem is that diagrams in the Lenze manual only depict 3 wires coming from the power source and I have 4 wires coming from my dryer plug.

    On the VFD for the power source there are 4 connection posts, PE, L1, L2, L3. The diagram for single phase 240 VAC on shows 3 connections. Pics attached to help visualize what I am seeing. The second last picture actually shows 4 wires coming from the power source but I am not sure which color wires should go where.

    As for electrical codes, I am located in Toronto Canada.

    Any help would be appreciated. Thx.

  2. #2
    Join Date
    Dec 2003
    Posts
    24216
    You use the red & blk to L1 & L2 use the ground for PE and do not connect the neutral (white).
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.

  3. #3
    Join Date
    Jul 2003
    Posts
    138

    VFD Error - Fast Current Limit

    Hello Al, I finally got around the wiring everything up and now I get an error code which is "Fast Current Limit".

    In the manual it states it is an overload condition and that I should verify drive/motor are proper size for application.

    Any ideas?


  4. #4
    Join Date
    Dec 2003
    Posts
    24216
    What rpm are you commanding?
    Try lowering accel decel rate?
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.

  5. #5
    Join Date
    Jul 2003
    Posts
    138
    Thanks Al but I do not think that is the problem... it is currently set to 20 seconds. For some reason the spindle is drawing too much current.

  6. #6
    Join Date
    Jan 2005
    Posts
    15362
    ngr1

    Most likely just some setting to change have you done these settings

    P302 motor Rated Voltage=

    P303 Motor Rated Current=

    P304 Motor Rated Frequency=

    P305 Motor Rated Speed=

    P167 Base Frequency=

    P103 Maximum Frequency=

    P102 Minimum Frequency=

    You need all of these set correct to get it running, Don't run it like you are as you can damage the Drive/ motor with incorrect settings
    Mactec54

  7. #7
    Join Date
    Jul 2003
    Posts
    138
    Hi Al, the frequency needed to be set to 300 in 3 places which solved the problem. Thx.

  8. #8
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    Jul 2003
    Posts
    138
    Thanks for your input also Mactec54.

  9. #9
    Join Date
    Jan 2005
    Posts
    15362
    ngr1

    Fill in the numbers you used, so others don't have the same problems

    P302 motor Rated Voltage=220

    P303 Motor Rated Current=

    P304 Motor Rated Frequency=300

    P305 Motor Rated Speed=

    P167 Base Frequency=300

    P103 Maximum Frequency=300

    P102 Minimum Frequency=
    Mactec54

  10. #10
    Join Date
    Jan 2007
    Posts
    235
    Hi,

    Is this the final configuration mactec54 listed?

  11. #11
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    Jan 2005
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    15362
    naspc

    I was hopping ngr1 would of filled in what other parameters he used, it's not to hard though

    P302 motor Rated Voltage=220

    P303 Motor Rated Current= What ever the Amp rating is on the motor name plate

    P304 Motor Rated Frequency=300

    P305 Motor Rated Speed= this will be on the motor name plate as well, most likely 24,000

    P167 Base Frequency=300

    P103 Maximum Frequency=300

    P102 Minimum Frequency=130 130 would be a safe starting point as to how slow the spindle could be run


    There are other settings as well Acceleration & Deceleration are important numbers as well start with around 12sec & adjust to suit
    Mactec54

  12. #12
    Join Date
    Jan 2007
    Posts
    235
    Thanks Mac tech For Replying. I have a spindle with a base frequency of 300 and a max frequency of 400.
    So would I enter for the following:
    P304 400
    P167 300
    P103 400?
    Wouldn't this change p102?

  13. #13
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    Jan 2005
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    15362
    naspc

    Do you mean it can only be run at near max RPM & not able to slow to say do 6000/4000 0r 2000 if this was the case then P102 would be set to the 300 this is the setting for the slowest speed the spindle can run adjust this number to get to the lowest speed 130 is just a safe average but may be to low for your spindle
    P304=400
    P167=300
    P103=400
    P102=300 only if this is how slow the spindle will run

    Do you have the spindle spec's
    Mactec54

  14. #14
    Join Date
    Jan 2007
    Posts
    235
    Heres a picture of the plate.

    Click image for larger version. 

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  15. #15
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    Jan 2005
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    naspc

    It looks like the minimum speed is 18,000 for this model so you would use the 300 for the slowest speed, other models they have will go down to 6000 but have a lower max spindle RPM as well

    Contact Teknomotor to see for sure, what I have seen on there site is 18000 to 24000 for this spindle so the P102=300 would be correct
    Mactec54

  16. #16
    Join Date
    Jan 2007
    Posts
    235
    Thanks Mactec54 you have been a great help. Any chance you can point me to some tutorials on how to hook up a vfd to the teknomotor?

  17. #17
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    Jan 2005
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    15362
    naspc

    What VFD do you have, use a shielded cable from the VFD to the motor & Ground the shield at both ends, plus the normal Ground wire has to be grounded as well

    The AC input you can use shielded cable, but the shield is only Grounded at the source, meaning the input end of the cable, you can use Flexible Conduit as well Twist the power wire's together & Ground the metal inside the Flexible conduit with the right fittings at the source
    Mactec54

  18. #18
    Join Date
    Jan 2007
    Posts
    235
    Mactech54

    I was think of using this one form buildyourcnc.com. https://www.buildyourcnc.com/item/sp...-vfd-nospindle

  19. #19
    Join Date
    Jul 2007
    Posts
    265
    Base frequency isn't the minimum rpm. Base frequency is the frequency where the vfd supplies full voltage to the motor.

  20. #20
    Join Date
    Jan 2005
    Posts
    15362
    tahustvedt

    No one said it was, His base frequency is what the manufacture has set at 300 for there spindle, his minimum speed is 18,000 which is also 300Hz for this spindle his max spindle speed is 24,000 at 400Hz
    Mactec54

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