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Thread: Interlock for VFD / Water Pump

  1. #61
    Member CitizenOfDreams's Avatar
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    Default Re: Interlock for VFD / Water Pump

    Keep playing, I'm sure you will figure it out.

    If the VFD is running, it is better to stop it first. But nothing bad will happen either way, VFDs are designed to handle sudden AC power loss even while the motor is running.



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    Default Re: Interlock for VFD / Water Pump

    Quote Originally Posted by kolias View Post
    Ok, now it works

    I set the PD013 to 8, then I set the PD000 to 0, then I set the PD001 to 0 and then I tried to set PD003 to 400 but I was unable to do so

    So I got the PD003 flashing and I hit the SET button
    Now the display shows 000.00
    I use the SHIFT key until I get the first zero flashing
    Then I use the up/dn keys to change the first zero value but immediately the second zero is flashing and is set to 5. The result is 050.00

    I tried the above a few times but I get the same result. Will try tomorrow again, perhaps it’s not my day!

    When I want to unplug the VFD, I just unplug it or I should first press the STOP button?

    Watch this Video it will help you with the settings, your settings may be different to the Video, this is just how too

    If you can't do a setting, check the lock Parameter is set to Zero PD000=0 if it is set to 1 it is locked

    They say in the video they don't connect Ground/Earth wire, ( China only ) this is not the case for your wiring, You have to connect the Ground/Earth wire



    Mactec54


  3. #63
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    Default Re: Interlock for VFD / Water Pump

    Very nice video mastec54, thanks

    Nicolas


  4. #64
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    Default Re: Interlock for VFD / Water Pump

    Regarding my post #41 equipment I bought, I’m approaching the wiring stage and I don’t know yet what PSU’s I need. I have the 48VDC PSU for the G540 and I know I have to buy another 12VDC PSU for my cooling fans inside the control panel but for the VFD do I need one?

    I read on several threads here some use a 24VDC to supply power to the VFD and or relays

    What I would like is to have Mach3 turn the spindle ON/OFF, Control the spindle speed and hopefully turn ON/OFF the cooling water pump for the spindle. With this setup do I need another PSU and if yes what is the suggested volts / amps.

    Also do I need any relays? If yes how many and any suggested models?

    Nicolas


  5. #65
    Community Moderator Al_The_Man's Avatar
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    Default Re: Interlock for VFD / Water Pump

    Not sure if I mentioned this, lost track, but why not use a Y1 or Y2 open collector output which is rated for 24vdc and 100ma, so a 24vdc relay on there would switch whatever you needed, the parameter PD050/051 could be set for Up to speed, or as in Huanyang speak, Frequency Reach.
    There are alternatives such as 'Not Zero Speed' which would come on as soon as the spindle starts to turn.
    You could use a 12vdc relay if you have a 12v supply already.
    Al.

    Last edited by Al_The_Man; 11-28-2016 at 04:16 PM.
    CNC, Mechatronics Integration and Custom Machine Design

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    Albert E.


  6. #66
    Member kolias's Avatar
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    Default Re: Interlock for VFD / Water Pump

    Sorry Al but what is a Y1 or Y2 open collector?

    Looking at my VFD connections I don’t see any Y1 or Y2

    It would be great to use a 12VDC relay, can you suggest one?

    Nicolas


  7. #67
    Community Moderator Al_The_Man's Avatar
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    Default Re: Interlock for VFD / Water Pump

    Look at the diag of the Hook up/connections you will see two open collector NPN output which are assigned by par PD050/0051.
    DRV,UPF,COM.
    There are socket type relays from Omron LY series plus Idec,Tyco, etc. You shouldn't need a very high rated current one.
    Any local electrical supplier should have them, Do you have an Eecol electric near you?.
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

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


  8. #68
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    Default Re: Interlock for VFD / Water Pump

    Now I see the UPF, DRV, COM connections, thanks Al

    Sorry for the confusion folks but I noticed that I have 3 threads all related to this project and I plan to keep one thread to the end (when all wiring is done and is working) and make a reference to the other 2 threads.

    I need about a week to finalize the mechanical and then I will make a wiring schematic for comments

    Nicolas


  9. #69
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    Default Re: Interlock for VFD / Water Pump

    Quote Originally Posted by Al_The_Man View Post
    Look at the diag of the Hook up/connections you will see two open collector NPN output which are assigned by par PD050/0051.
    DRV,UPF,COM.
    There are socket type relays from Omron LY series plus Idec,Tyco, etc. You shouldn't need a very high rated current one.
    Any local electrical supplier should have them, Do you have an Eecol electric near you?.
    Al.
    I would like to get the 2 relays I need and I found the following (I don’t know Eecol Electric but I bought before from both Mouser and Digikey.

    T9AS1D12-48 TE Connectivity / P&B | Mouser

    G5V-1-DC12 Omron Electronics Inc-EMC Div | Relays | DigiKey

    Can you please let me know which one you suggest? (to refresh your memory coil voltage is 12VDC and they are to switch ON the 120VAC VFD and water pump)

    Nicolas


  10. #70
    Community Moderator Al_The_Man's Avatar
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    Default Re: Interlock for VFD / Water Pump

    The first one TE would be OK although the relay coil is 80ma and the rating for the output is 100ma, so it is close, my favorites in this application is the Omron MY series, they have a terminal base but are a little more money, too bad you need 12v as I have quite a few new surplus 24vdc.
    The G5V version is PCCT board mount and the contacts are not rated that high.
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

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


  11. #71
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    Default Re: Interlock for VFD / Water Pump

    No problem Al, I haven’t bought the 12VDC PSU and I can buy a 24VDC. It will only be used for the 2 relays and my proximity switches which are good for 6-36VDC (7 of them, Load:300mA each). Would you also have by any chance a 24VDC PSU and a small fan for cooling air inside my control panel about 2” to 4” square? Tell me my cost including shipping (PM me if you want)

    Nicolas


  12. #72
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    Default Re: Interlock for VFD / Water Pump

    Quote Originally Posted by kolias View Post
    No problem Al, I haven’t bought the 12VDC PSU and I can buy a 24VDC. It will only be used for the 2 relays and my proximity switches which are good for 6-36VDC (7 of them, Load:300mA each). Would you also have by any chance a 24VDC PSU and a small fan for cooling air inside my control panel about 2” to 4” square? Tell me my cost including shipping (PM me if you want)
    I should have both, but not sure if the fans are 24vdc.
    Will check into it.
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

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


  13. #73
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    Default Re: Interlock for VFD / Water Pump

    Nicolas I sent an email to your Bell.net address.
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

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


  14. #74
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    Default Re: Interlock for VFD / Water Pump

    This is my wiring schematic which I completed with the great help from Al_The_Man. It’s not an engineer’s schematic but rather the way I understand to complete my wiring. Perhaps there are mistakes so any comments are welcomed.

    The questions I have for now is if I need the diodes across both relay terminals 13 and 14 and if the earthed star ground is a sufficient as shown

    Attached Thumbnails Attached Thumbnails Interlock for VFD / Water Pump-wiring-schematic-jpg  
    Nicolas


  15. #75
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    Default Re: Interlock for VFD / Water Pump

    Hi Nicolas

    only had a quick look but
    I have noticed the diodes need the Cathodes connecting to the power supply positive !

    when the G540 or VFD drive output grounds the other end of the coil & diode Anode
    the diode will be reverse biased and not conduct

    the diode only conducts when the relay is switched OFF
    (and the back emf takes the anode more positve than than the cathode)

    Interlock for VFD / Water Pump-wiring-schematic-diodes-reversed-jpg

    John



  16. #76
    Community Moderator Al_The_Man's Avatar
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    Default Re: Interlock for VFD / Water Pump

    The DCM should be connected to RTN (24v common).
    You r P.S. commons do not show anything connected.
    Also RTN has to be connected to Gecko Term. 12.
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

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


  17. #77
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    Default Re: Interlock for VFD / Water Pump

    Sorry John I don’t understand, the Cathodes now are connected on the + side. Do you mean to have the Cathode connected in series to the red cable? (Cathode on the red wire and Anode on terminal 14?)

    Al I have a note to the right of PSU’s which says the commons (Negative) of each PSU is connected to the earthed star ground. Is this not enough? Not the proper way of showing this but to avoid confusion with too many lines I decided to have the note instead

    Nicolas


  18. #78
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    Default Re: Interlock for VFD / Water Pump

    Hi Nicolas

    the cathodes go to relay terminal 14 which is connected to 24V power supply positive

    the anode goes to terminal 13 and is connected to the power supply negative by either
    the G540 output or VFD


    part of revised diagram in post 75
    Interlock for VFD / Water Pump-diode-connections-jpg


    John



  19. #79
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    Default Re: Interlock for VFD / Water Pump

    Like the attached John?

    Attached Thumbnails Attached Thumbnails Interlock for VFD / Water Pump-diodes-new-jpg  
    Nicolas


  20. #80
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    Default Re: Interlock for VFD / Water Pump

    Hi Nicolas

    yes thats the way

    John

    PS

    Electronics Club - Relays

    Last edited by john-100; 12-10-2016 at 05:41 AM.


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