7/9/2010 10:43 AM | |
Posts: 173 Rating:
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Some ideas! 1) If you use a LOGO! 230RC(o) - use a PC UPS (Uninteruptible Power Supply) to keep the 230V LOGO! running - connect the normal supply to a digital input on the LOGO! (same phase as L and N on I1..I4 or from a different phase on I5..I8) - 'watch' this input. - as soon as it 'drops out', start an impulse generator with 0.5sec / 0.5sec (i.e. connect the 'watched' input to the En, but inverted) - use an up/down counter to count the pulses (seconds) - use the analog maths (0BA6 only) to reference this value and the value from a timer and subtract the two from each other OR use the Stopwatch function written by Betel on the german forum (!) 2) If you use a 12/24RC(o) LOGO! - use a backup battery (and a charger) - connect the 230V live to be 'watched' via a 230V/12VDC relay - 'watch' this input as above Maybe this attachement might help! Cheers Aaaarrrghhhh!!!! ("Have a nice day!") AttachmentMains_Detect.zip (394 Downloads) |
7/9/2010 2:18 PM | |
Posts: 173 Rating:
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I now understand a bit better. See if the attached program helps - it was also maintaining the retentivity of a timer after a power failure. !!??!?!? Aaaaarrrghhh! ("Have a nice day!") AttachmentRetentative_timer.zip (412 Downloads) |
7/12/2010 8:17 PM | |
Joined: 1/5/2007 Last visit: 4/7/2023 Posts: 1690 Rating:
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Hi miltos, I think it is not possible to program a time delay with a full free trigger time. There is no way with the LOGO! to get or calculate the time of power of.. Best regards Betel _________________________________________________ Perhaps helpful links: |
==> Meine TAG-Listen: "deut." |
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7/14/2010 9:17 AM | |
Joined: 3/4/2009 Last visit: 10/28/2020 Posts: 57 Rating:
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Thanks Betel. Your answer didn't make me happy, but it was clear. |
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