[FUN] Discrete I/O - was Digital I/O

[Stephen Mitschke]

Dear Mr. Hagan,Smar manufactures a FF H1 Device called DC302, that is a discrete controllerwith 16 Discrete Inputs (24V) and 8 Discrete Outputs (0.5A). This devicealso has function blocks like the flexible function block that allows you toconfigure logic control using Structure Text Based language.If you are interested please let me know, so I can forward you moreinformation.Best Regards,Claudio FayadTechnical ManagerInternational DivisionSmar Equipamentos Industriais LtdaPhone: + 55 16 6456455Fax: + 55 16 6456450URL <http://www.smar.com/> http://www.smar.com

[Stephen Mitschke]

Ambrose,Have you investigated using I.S. SOVs? One Manufacturer that provided lowwattage coils was Versa Valves. I thought we used them on the CSBP MainJetty for import of NH3 for shutdown valves at the Connex loading dischargeboom at the Jetty.Regards............Duncan Turner

[Stephen Mitschke]

There is a solution the company Bürkert in Germany is offering. They offer abinary box and solenoid valves. Also we heard of bad experiences of theextreme low power solenoid valves (1-2 mA). This was one of the reasonsBürkert developed the box for handling solenoids up to 30 mA. And indeedmany solenoids draw 30 mA. We apply these boxes already in projects so it'sproven technology.Alternative binary boxes on the market do require:- extreme low power solenoid valves or,- separate powering of the binary box (four wire device) or- separate powering of the solenoids because the binary box has a passiveoutput The binary box of Bürkert is a fully two wire device, so there is no needfor separate wiring to power the binary box (bus powered device) and thesolenoids are powered by the box (active outputs). This device isn't known very well on the market because it isn't anouncedyet to the marketing departments of Bürkert. You need to contact thedevelopment department of Bürkert (Mr. Hartmann, tel +49 7940 10412, e-mail;norbert.hartmann@buerkert.com) for information.RegardsChris BaltusDSM

[Stephen Mitschke]

TopWorx utilizes the Piezo technology on our DVC-FF Digital Valve Controllerfor use with on/off valves. We have tested our Piezo valve forvibration/shock and the results follow. All tests have been done underpower (15mA/24vdc) and with air (Cv=1.2) and the valves have passed. Allsample valves were operating during and after the testing.Vibration:DIN EN 60068-2-6 = IEC 68-2-6Sine, 2-200Hz, 3G, 10 cycles times 3 axisBumps:Din EN 60068-2-29 = IEC 68-2-29Half sine, 30G, 6ms, 1000 bumps times 6 directionsNoise:DIN EN 60068-2-64 = IEC 68-2-6420-2000Hz, PDS 1 G rms, 30 min times 3 axisPlease feel free contact me or Gary Rumrill (grumrill@topworx.com) with anyquestions.Don WolffRegional ManagerTopWorx