quietdoc Posted October 30, 2009 Share Posted October 30, 2009 I have been using a CMB-16D (DC) card to control the pneumatics of my singing pumpkin.This year I picked from ebay a beautiful Numatics valve array with 10 valves, all running on 24vdc. I tested the valves with the power supply with no problems, but when I hooked it to the CMB-16D card, nothing.After much frustration, I figured out the valve array works only with the common being negative, while the CMB-16D output is with the common being positive.Is there any way to make these things work together?RO Link to comment Share on other sites More sharing options...
R Weiland Posted October 30, 2009 Share Posted October 30, 2009 Hi Doc;Can you provide a little more information on the valve array you are using? Link to comment Share on other sites More sharing options...
quietdoc Posted October 30, 2009 Author Share Posted October 30, 2009 It is a Numatics 2004 series pneumatic solenoid valve array with 10 valves. The nitty gritty details can be found here:http://www.numatics.com/common/deliverables/catalogs/valves/2004.pdfBut this PDF was not helpful (to me anyway).It is a really nice setup; each valve has its own pressure regulator and gauge. All the other solenoid valves I have used don't care how you hook up the 24vdc; they work either way. But these valves are all hooked together, with a single 25pin connector on the end. There is an LED on each valve that lights on activation; I suspect this has something to do with it...RO Link to comment Share on other sites More sharing options...
-klb- Posted October 30, 2009 Share Posted October 30, 2009 If it is the piloted valve version, instead of the direct acting, they may have the LED wired in series with the coil.Probably the cleanest way to make these work is to use the DC card to drive a small relay, to allow the conversion to common negative... Link to comment Share on other sites More sharing options...
R Weiland Posted October 30, 2009 Share Posted October 30, 2009 Doc;I looked at the .pdf and your options are limited. You are correct, most selenoids don't care. But that little LED does care. So they have tied the commons together and assigned that to be (-) and the control lines to be (+) which is opposite of the DC board. The model you have can be ordered with either a terminal block or 25Pin D-Sub which is what you have. Both options are fed via a transfer connector. You might want to open the I/O connector block and inspect the transfer connector. Hopefully the selenoid commons are tied together here inside this block. If they are you can un tie them and bring out each pair and wire to the DC card directly or may be you can re-wire them to your 25 pin connector? If the commons can not be found inside the I/o Connector Block, I am afraid that to get it to work with the DC board you might have to put a set of relays between the DC card and your valves to get around the common (+) vs the common (-). It's a kludge but will work. Modify the DC Card??? May be.Good Luck Link to comment Share on other sites More sharing options...
J_Plak Posted October 30, 2009 Share Posted October 30, 2009 Can you tell us the order number is 041 BA 4 Z1 M P 000 61need to know the two number.... Link to comment Share on other sites More sharing options...
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