New Machine Build FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1 - Page 3


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Thread: FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1

  1. #25
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    Default Re: FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1

    The safety relay is Allen-Bradley 440R-C23139 Monitoring Safety Relay Minotaur MSR131RTP. Robert said he used all the inputs on this one but the S11 is duplicated. according to his schematic S11 is connected to the E-Stop then 0V on the BOB. I fear that if I connect to the wrong S11 I will fry some other parts.

    Attached Thumbnails Attached Thumbnails FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1-img_20180221_164207-jpg  


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    Default Re: FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1

    Quote Originally Posted by rcmcdee View Post
    Thanks again Robert. I just tracked down "FIRST robotics season" and it looks fascinating. What is your relationship to that show?
    I'm just a team mentor...trying to pass a little bit of my enthusiasm for engineering on to the next generation. Its a great program. It guides kids towards interesting careers where they have a real chance to be successful in life, instead of a one in a million shot at being famous playing a sport. (I'll step off my soapbox now.)

    -Robert



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    Default Re: FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1

    Quote Originally Posted by rcmcdee View Post
    The safety relay is Allen-Bradley 440R-C23139 Monitoring Safety Relay Minotaur MSR131RTP. Robert said he used all the inputs on this one but the S11 is duplicated. according to his schematic S11 is connected to the E-Stop then 0V on the BOB. I fear that if I connect to the wrong S11 I will fry some other parts.
    I have the same relay, and I never noticed that there were two S11 contacts. I ended up using the one on the top row, and it works. I imagine that either one would work, but I know that the one on the top row beside the S12 contact works.

    When I said that I used all of the inputs on the relay, I was referring to the control contacts S13, S23, S33. I am also using both of the E-stop inputs, but I think those are S11 and S12.

    -Robert



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    Default Re: FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1

    With nothing else connected, check continuity between the two S11 terminals. My guess is that they are tied together internally?

    Gerry

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    Default

    Quote Originally Posted by ger21 View Post
    With nothing else connected, check continuity between the two S11 terminals. My guess is that they are tied together internally?
    I would guess the same, but I haven’t checked this.



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    Default Re: FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1

    Thanks guys,

    It did not occur to me to try that. I'll check it out when back in the shop on Monday. I feel like I can power up and text the safety circuits now. Then on to getting motors running. That seems like it will be more straight forward than the safety circuits.



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    Default Re: FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1

    Indeed... The S11 ports on the safety relay do appear to be hooked together internally. Neither exhibits continuity with any other port when tested. Like Robert, I connected to the one adjacent S12.

    I did fire up the box and found all sorts of silly oversights in my build. Simple stuff like forgetting to put the bridges into the terminal blocks and wiring the small fuses at the lower terminals instead of the fused uppers. BUT... when corrected, the contactor gave a very satisfying clunk when the reset button was pushed and again when the big red button was whacked. All voltages check and the various LEDs appear properly lit. I am loading the board into the enclosure and will be installing all the drive connectors in the next day or two. I'll endeavor to get a picture or two up soon. Now on to the UCCNC manual...

    @ Robert - If your mentoring the kids is as thorough as the mentoring in this forum - they are lucky indeed. I would not be doing this without your build log for guidance.



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    Default Re: FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1

    Odd new glitch - The wires from the motor power connectors were too short to reach the terminal blocks on the DIN rail. so I used crimp splice connectors and went direct to the power supply. I also crimped eyelets on to the white and green ground wires and screwed them to the back plate.See the attached picture. It would seem this is OK but... if anyone thinks otherwise please advise.

    I am also thinking to join the green and brown motor data panel connector wires into one ferrule for connection into the VCC distribution terminals. It seems that would simplify connections and routing. Is there any reason not to do this. Thanks for the input.

    Robb

    Attached Thumbnails Attached Thumbnails FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1-img_20180301_172430-jpg  
    Last edited by rcmcdee; 03-01-2018 at 09:44 PM.


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    Default Re: FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1

    Quote Originally Posted by rcmcdee View Post
    Odd new glitch - The wires from the motor power connectors were too short to reach the terminal blocks on the DIN rail. so I used crimp splice connectors and went direct to the power supply. I also crimped eyelets on to the white and green ground wires and screwed them to the back plate.See the attached picture. It would seem this is OK but... if anyone thinks otherwise please advise.

    I am also thinking to join the green and brown motor data panel connector wires into one ferrule for connection into the VCC distribution terminals. It seems that would simplify connections and routing. Is there any reason not to do this. Thanks for the input.

    Robb
    What are the white wire you have Grounded to the Ground Plane, just below the VFD

    Mactec54


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    Default Re: FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1

    Those are the far side safety ground I believe. Robert wrapped them in green shrink to indicate that status.



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    Default Re: FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1

    Quote Originally Posted by rcmcdee View Post
    Odd new glitch - The wires from the motor power connectors were too short to reach the terminal blocks on the DIN rail. so I used crimp splice connectors and went direct to the power supply. I also crimped eyelets on to the white and green ground wires and screwed them to the back plate.See the attached picture. It would seem this is OK but... if anyone thinks otherwise please advise.

    I am also thinking to join the green and brown motor data panel connector wires into one ferrule for connection into the VCC distribution terminals. It seems that would simplify connections and routing. Is there any reason not to do this. Thanks for the input.

    Robb

    Robb,

    The wires for the motors were definitely a little on the short side for me, but I managed to get them to reach. I don't see a problem with using the butt splices or grounding to the back plate, but the way you have the 75V wires routed is not ideal. You have them running right by the VFD, which is the one thing in the system that will generate a ton of electrical noise. You can solve the problem in one of two ways:

    1) Simply move the wires so that they route around the UC300 in the other direction, so that they pass by the motor outputs, then over to the power supply outputs. It looks like you should have enough wire for that without having to re-crimp the Molex connectors for the power supply.

    2) Take the wires that you have and cut them beyond the butt splices so that they will comfortably reach the red and black terminal blocks. Then use the other end of the cable (with the Molex connectors) to attach to the terminal blocks.

    I'm not sure there is much of an advantage to either solution. I did things the way I did to avoid splices and to avoid the effort of having to solder wires into the round bulkhead connectors. The terminal blocks also gave me the flexibility to move wires around if I needed to while laying out the panel.

    -Robert



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    Default Re: FineLine Saturn2 4' x 4' with ClearPath, UC300-ETH / UB1

    Quote Originally Posted by rcmcdee View Post
    Those are the far side safety ground I believe. Robert wrapped them in green shrink to indicate that status.
    That is correct. As I mentioned above, I used the round bulkhead connectors with wires pre-attached to avoid the hassle of having to solder wires to them and to avoid accidental solder bridges. I like soldering, but I don't like it THAT much, and these connectors weren't that expensive. The disadvantage to my approach was that I couldn't select the wire colors. The safety grounds from the motors really should be independent, not daisy-chained, so I was forced to use a non-standard wire color. I wrapped these in green heat shrink to avoid confusion and to be consistent. I won't be UL listing or CE marking this machine, so it's not strictly necessary, but safety is important, and ground wires should be easy to identify. I also didn't want to splice the safety grounds and use the correct color wire because that is technically a no-no also.

    The signal wires to the motors have the same problem. The bulkhead connectors have one wire color but the cables from the control box to the motors have different colors. They are made by the same company, so I can't figure out why they would be different, but they are. So I was forced to just document the wire colors for future reference.

    -Robert



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