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Why do the relay contacts block in On Position after some time when the LOGO! when switching LED lamps?
Created by: reylon at: 1/18/2020 10:52 PM (2 Replies)
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| 1/18/2020 10:52 PM | |
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Posts: 6 Rating:
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I use logo 220v from 20 years for my home automation. It is very very strange. No problem in the past. I had to change already 3 times in the last 5 years the bathroom light relay in 3 different logo. I understand that the bathroom light is the most used, but from my calculation I didn't arrived to 10.000.000 cycles every 2 years approx. The bathroom light has been not more than 60w (actually 12w led)… when the relay start to make problems for some times you can deactivate the contact by resetting logo or powering off logo. At the end the contact remain blocked in on position also with logo powered off. But after the logo dismount I couldn't never find the contact still blocked..... My impression is that the quality of the logo inside relay went down a lot in the last 3-5 years... Who had a similar problem with logo 220v relay? ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 01/20/2020 06:35:35New subject after splitting |
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| 1/19/2020 5:02 AM | |
Joined: 12/18/2014 Last visit: 12/5/2024 Posts: 34342 Rating:
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The problem is not the relays, but the LEDs. LED lamps have a very, very high inrush current. The relays of the LOGO! S are not designed for the high inrush currents. In such cases, appropriate contactors (not relays) should be removed from the LOGO! controlled, which are designed for these high inrush currents. Or use inrush current limiters such as LOGO! ICL230. |
| 1/19/2020 5:47 AM | |
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Joined: 12/18/2014 Last visit: 12/5/2024 Posts: 34342 Rating:
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Or search for this: eQ-3 Inrush Current Limiter ESB1 AttachmenteQ-3 Inrush Current Limiter manual.pdf (326 Downloads) |
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