8/27/2008 8:45 PM | |
Joined: 1/5/2007 Last visit: 4/7/2023 Posts: 1690 Rating:
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Hi javi2001, please, let us know your LOGO!-program witch you used to measure the input frequency... I only kmow that the new LOGO! series 0BA6 have inputsup to5 kHz! At the other side the value that siemens say us into the handbook (2kHz for the 0BA5), is a value witch the LOGO! can handle in all cases (that means: with the lowest possible cycle frequency what can be happen!). Best regards Betel |
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8/28/2008 1:12 AM | |
Posts: 5 Rating:
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Hi, first at all, thanks for your fast answer. I did use the attached program to make my test. This program shows on screen the frequency at I5 if over 100Hz. Using a square wave 10 Vp-p I got steady readingsat displayabout 4500 Hz What's your oppinion??? can I trust this readings??? AttachmentFrequecyTest.zip (614 Downloads) |
8/29/2008 9:41 PM | |
Joined: 1/5/2007 Last visit: 4/7/2023 Posts: 1690 Rating:
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Hi, ROSA is right - and the new LOGO! series 0BA6 has faster high speed inputs (up to 5 kHz), but no new function to work with this inputs (or the counted values) and no new function to analyze this input frequencies !! ?... -->Because this,in my oppinion it gives only some cases to use the faster high speed inputs of the 0BA6. Best regards Betel |
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9/4/2008 10:37 PM | |||
Joined: 1/5/2007 Last visit: 4/7/2023 Posts: 1690 Rating:
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Hi javi2001, that is possible - look at my answer (and the attachment there) under the link: "Water Flow sensor - Counting Pulses HELP!" Best regards Betel |
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9/5/2008 12:26 AM | |
Posts: 191 Rating:
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Hi!! you can also use a frequency to analog converter and use the 0-10V input of LOGO!... there are several converters in the market as an example Weidmuller 8581180000 could work http://catalog.weidmueller.com/procat/Product.jsp;jsessionid=0C0D1B52ABA4C30293CB64D255E4EDC9?productId=(%5bprod3312943132240%5d)&page=Product ROSA |
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