Announcement

Collapse
No announcement yet.

drifting chassis

Collapse

Adsense Classic 1

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • drifting chassis

    i am having trouble with a chassis. the sweep drifts past the guards and zero. i've tried it on all of our machines, and it does it on all of them. i've tried so many different boards in it, and just recently got a new omegatek mk-70ec board into it. i've changed relays in it and checked out the wiring, all seems to be fine.

    at the moment i've got it on the machine that it drifts least on. and i have adjusted the camfingers to incorporate the drifting. so i have it at the stage where it's neally stopping at the right places but on the first cycle it hits the bottom of the head pin, i have adjusted the respot so that the pin is sitting the highest it can in the table, and it still hits it. if i try and adjust the position of the first guard anymore it stops cycling.

    please help

  • #2
    Re: drifting chassis

    Just 2 minutes ago, same thing but with SS, changed to MP and everythings good! SS's are great, but some times the speed of state of the art is too fast for the machines it is hooked to?
    Not electronical genius, but I believe you can adjust the timing persa of the sweep in the chassis itself, I am unclear on how it's done though? Somebody out here knows though!
    It's been awhile but I have much more to share!!!

    Comment


    • #3
      Re: drifting chassis

      When a sweep drifts, it is most likely the normally closed contacts on the sweep contactor. If you have original Allen Bradley (open frame contacts), replace them with a newer style like the contactors that have the "button" at the top of the unit (you can run manually by pushing the button). The aftermarket "open" contacts suck! They just are not good! If you need more info, let me know [img]/content/btubb/images/%%GRAEMLIN_URL%%/laugh.gif[/img] I acn send pix if you need to see what kind I am talking about. That is more than likely the problem....also check the C1 pins for burnt, broken, or bad connections (also check the crimp job on the pins!)

      G'day!
      Jon [img]/content/btubb/images/%%GRAEMLIN_URL%%/usflag.jpg[/img]

      wbesite: <a href="http://home.earthlink.net/~wb8yjf/" target="_blank"><a href="http://home.earthlink.net/~wb8yjf/" target="_blank"><a href="http://home.earthlink.net/~wb8yjf/" target="_blank"><a href="http://home.earthlink.net/~wb8yjf/" target="_blank"><a href="http://home.earthlink.net/~wb8yjf/" target="_blank"><a href="http://home.earthlink.net/~wb8yjf/" target="_blank"><a href="http://home.earthlink.net/~wb8yjf/" target="_blank"><a href="http://home.earthlink.net/~wb8yjf/" target="_blank"><a href="http://home.earthlink.net/~wb8yjf/" target="_blank">http://home.earthlink.net/~wb8yjf/</a></a></a></a></a></a></a></a></a>
      [img]/content/btubb/images/%%GRAEMLIN_URL%%/smile.gif[/img]
      I've had enough of hope & chains.

      Comment


      • #4
        Re: drifting chassis

        As stated already it's most likely the lower contacts. I am removing all my allen bradley relays with the siemens-allis relays. p/n 610-704-141.

        I have not had one of those relays go bad yet.

        Mike
        Mike

        Comment


        • #5
          Re: drifting chassis

          [img]/content/btubb/images/%%GRAEMLIN_URL%%/cool.gif[/img]
          If at first you don't succeed, try, try, again. Then quit. There's no use being a damn fool about it.&quot; -W.C.Fields

          Comment


          • #6
            Re: drifting chassis

            We're using the Siemens replacements as well, they work quite well for us. Last time I had the problem you describe it was pins in the C1 plug. You couldn't really see the burn marks until popped out of the plug. Using the C1 chart (thanks again "G" [img]/content/btubb/images/%%GRAEMLIN_URL%%/laugh.gif[/img] )I replaced ALL the pins for the sweep and it stops on a dime now. Good luck!
            All I want in life is to turn wrenches and climb around pinsetters/pinspotters again :/

            Comment


            • #7
              Re: drifting chassis

              Originally posted by wendowg:
              i am having trouble with a chassis. the sweep drifts past the guards and zero. i've tried it on all of our machines, and it does it on all of them. i've tried so many different boards in it, and just recently got a new omegatek mk-70ec board into it. i've changed relays in it and checked out the wiring, all seems to be fine.

              at the moment i've got it on the machine that it drifts least on. and i have adjusted the camfingers to incorporate the drifting. so i have it at the stage where it's neally stopping at the right places but on the first cycle it hits the bottom of the head pin, i have adjusted the respot so that the pin is sitting the highest it can in the table, and it still hits it. if i try and adjust the position of the first guard anymore it stops cycling.

              please help
              <font size="2" face="Verdana, Helvetica, sans-serif">wb8yjf is correct, chances are it is the lower sweep contacts or a burned contactor wire. The open style are all i have with very little problems. I have the money to buy the enclosed contactors, but the open style dont give me any reason to justify the expence.

              Comment


              • #8
                Re: drifting chassis

                Yes, the lower contacts are the braking contacts. And also check the C1 pins. I was pulling my hair out when it was the C1 pins, changed contacts, capacitors, brushes, and finally checked the pins by getting them out of the plug and they were burned way in where I couldn't see it. Those are (for me anyway) the most common causes if the problem is narrowed down to the chassis. Keep us posted [img]/content/btubb/images/%%GRAEMLIN_URL%%/smile.gif[/img]
                All I want in life is to turn wrenches and climb around pinsetters/pinspotters again :/

                Comment


                • #9
                  Re: drifting chassis

                  Well, he said he changed the relays, so I doubt it's the bottom contacts. The first place I would look is the C1 pins (as Rep said) and also compare the sweep contactor wiring to a chassis that works correctly and make sure all of the wires go to the right place. I had an 82-70 chassis that would coast the sweep on every lane, after some research I found 2 wires that were switched around. I put them where they go and the coasting problem went away.

                  Louie
                  Experience: Currently Help Maintain 44 82-30s and 50 82-70s.

                  Comment


                  • #10
                    Re: drifting chassis

                    My apoligies, I fogrot he said he changed relays. Odds are it's something simple like switched wires or bad C1 pins. Either or sounds like a good bet to me
                    All I want in life is to turn wrenches and climb around pinsetters/pinspotters again :/

                    Comment


                    • #11
                      Re: drifting chassis

                      I assumed when he said he changed the relays, he meant the 3 plug in's, not the contactors. Problem is in the braking circuit, thats fer sure! [img]/content/btubb/images/%%GRAEMLIN_URL%%/laugh.gif[/img]
                      Jon [img]/content/btubb/images/%%GRAEMLIN_URL%%/usflag.jpg[/img]
                      I've had enough of hope & chains.

                      Comment


                      • #12
                        Re: drifting chassis

                        If you are thinking about replacing the relays, I would seriously consider the SS conversion, from Bowltronics....They are awsome and cost about the same.

                        Comment


                        • #13
                          Re: drifting chassis

                          hey, thanks guys for your feedback. it was the contactor. i swapped the sweep and table contactors round to see what would happen, and the problem shifted to the table... luckily we had a spare contactor hanging round, so i chucked that in. everything is sweet now. (P.S i'm a female)

                          Comment


                          • #14
                            Re: drifting chassis

                            Oh, sorry. SHE said SHE changed the relays. Sorry for assuming. [img]/content/btubb/images/%%GRAEMLIN_URL%%/wink.gif[/img] [img]/content/btubb/images/%%GRAEMLIN_URL%%/smile.gif[/img] Anyway, I'm glad you got the problem fixed. When you said you changed the relays I assumed (There I go assuming again ) that you meant the contactors.

                            Louie
                            Experience: Currently Help Maintain 44 82-30s and 50 82-70s.

                            Comment


                            • #15
                              Re: drifting chassis

                              As for the A/B replacement contacts being junk... A while back, I told Chad about it. He told the "powers that be" what I told him &amp; they fixed the problem. Last fall, at the Western Trade Show, Chad gave me some of the new contacts to try. I put them in &amp; haven't had a problem. If you're still not convinced, try ordering them from JCP. I've been using theirs for about 5 years without a single failure.

                              Comment

                              Topic Starter RibbonScript

                              Collapse

                              Adsense Classic 2

                              Collapse
                              widgetinstance 666 (Related Topics) skipped due to lack of content & hide_module_if_empty option.
                               

                              Well this is a first.

                              We all from time to time have one of those “wow I’ve never seen THAT before” moments. Well today was one of those for me when my night tech texts me to say lane 16 is out...
                               

                              Ball return wheel guide roller removal.

                              Hey guys, i could just use a bit of advice trying to get this part out, first time I've had to do one of these. I got it to move a few turns but its come to a point where it has...
                               

                              Even old mechanics find something new.

                              All my years working on these things I never had this happen…… until last week. ...
                               

                              82-90XL Frontend Gearbox Parts - Rebuild Woes

                              We have 5 of the 088000365 replacement gear kits on the shelf, and I pulled two gearboxes off machines earlier this week, so I thought I'd try my hand at rebuilding them and save...
                               

                              Prolane damage

                              Can this be repaired?
                               

                              LED Ball Lights

                              Made an LED conversion for A2's and Frameworx masks. It can also be modded for the Harmony masks to accept 2 x 5mm led's and/or a 12v supply. Once I'm happy with the performance/design...
                              Working...
                              X