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: Solenoid configuration
: Solenoid configuration -- costasv	Post Reply	Top of thread	Engineering Forum

Posted by: devitg ® 05/10/2009, 20:55:15 Author Profile eMail author Edit

Use pulse actuated 2 coils valves. Once you sent a pulse , it will remain at such state , up to yuo send a new pulse to the other coil, Like a flip flop

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: : Solenoid configuration
: : Solenoid configuration -- devitg	Post Reply	Top of thread	Engineering Forum

Posted by: CostasV ® 05/12/2009, 04:39:02 Author Profile eMail author Edit

Thank you for your answer. I am not sure that I understand your answer. Could you send a link (showing a diagram, or a photo, or a manufacturer) with your configuration? Will there be a spring in the solenoid ? Or there will be one coil on each side-end (totally two coils) of the solenoid and no spring at all?

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: : : Solenoid configuration
: : : Solenoid configuration -- CostasV	Post Reply	Top of thread	Engineering Forum

Posted by: devitg ® 05/12/2009, 17:42:44 Author Profile eMail author Edit

There are 2 coils , and they remain at each state by it self . see it JMEBDH-5/2-D-2-ZSR-C by Festo , but it could be any other brand

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: : : : Solenoid configuration
: : : : Solenoid configuration -- devitg	Post Reply	Top of thread	Engineering Forum

Posted by: costasv ® 05/17/2009, 14:57:29 Author Profile eMail author Edit

Thanks devitg! Any other suggestion about how to maximise reliability and the other questions of the initial post? Modified by costasv at Sun, May 17, 2009, 14:59:25

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: : : : : Solenoid configuration
: : : : : Solenoid configuration -- costasv	Post Reply	Top of thread	Engineering Forum

Posted by: devitg ® 05/17/2009, 19:52:03 Author Profile eMail author Edit

Can you show or tell us what the pneumatic circuit handle. for this questions What are the ways that a solenoid can fail? Low or high voltage. Where can I find reliability data, like MTBF and the like. Whta is MTBF?? Which configuration, in series, or in parallel gives more reliability for the system? Series , to close , parallel if open. Are four solenoids, more reliable than two, and in which configuration? What application? Could you direct me to some relative sites? Pneumatics device vendors. Search for AIR CYLINDERS AND VALVES.

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: : : : : : Solenoid configuration
: : : : : : Solenoid configuration -- devitg	Post Reply	Top of thread	Engineering Forum

Posted by: CostasV ® 05/18/2009, 04:45:24 Author Profile eMail author Edit

The pneumatic circuit handles, instrument air at pressure 8 bar (g). This air gives power to a pneumatic cylinder. The piston is returned by a spring. Low voltage or high voltage is a reason for a solenoid to fail. But this reason comes from outside the solenoid, I mean this is a problem of power supply TO solenoid. We will take other precautions to verify the reliability of power TO solenoid. In my initial question, I was thinking more of internal failure modes. How can a solenoid fail if we focus only in internal causes? For example can the solenoid "stuck" in one terminal position, or "stuck" in between the two terminal position? Or can the solenoid leak from the body (not the connections) so that it can not operate? Once in a million strokes perhaps? Do the manufacturers give such data? MTBF= Mean time between failures Series/parallel : Please see attached drawing EDIT : It seems I made a mistake and the drawing is shown three times, but I can not correct it       Modified by CostasV at Mon, May 18, 2009, 04:47:41

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