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LOGO! 0BA7 and lifetime

Created by: erku at: 7/9/2013 6:37 PM (3 Replies)

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7/9/2013 6:37 PM	Rate (0)
erku Advanced Member Joined: 4/14/2013 Last visit: 10/18/2024 Posts: 33 Rating: (1)	Good day! What is the lifetime in module 0BA7? If it retains the time, then whether it is inside a battery or something similar? It is not possible,that is eternal I have a set of powered (0ba7+HMI+relays) with a 5A/24V power supply and the power off switching occurs approximately two seconds.. (I noticed that the 5A is good for main power fluctuations) Whether there are any special different requirements for power on and off? ------- 0BA7 worked about a month and then after another turning on, no longer read SD card program. SD card was Kingston 4GB (MicroSD/SD adapter). Control of the computer revealed that the card is damaged... On closer examination, that the card is not actually observed in the nest, and gives a slop. Installed a more expensive, industrial card and installed spills protection. However, the cause is unknown; poor memory card, power problem or the memory card gives a slop? Thanks for respondents...
	Last edited by: erku at: 7/9/2013 6:39 PM Last edited by: erku at: 7/9/2013 6:38 PM
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7/10/2013 10:02 AM	Rate (0)
Ste39 Platinum Member Joined: 1/21/2013 Last visit: 11/20/2024 Posts: 4620 Rating: (709)	Hi erku, Have a look: http://support.automation.siemens.com/WW/view/en/50074616 and for the SD card may have been faulty, it has never happened to me.

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7/11/2013 3:44 PM	Rate (0)
William_B Posts: 5225 Rating: (1198)	Hi there, To the case of the SD card.. Local retail sell SD cards with "lifetime guarantee" (if you retain the receit). My thoughts on this: The SD cards are VERY good.. or more likely.. there are some quality issues that the manufacturer not want to have made public. If ever you been inside a mass manufacturing plant.. can you ALWAYS trust what is shipped? Something to think about.
William_B Posts: 5225 Rating: (1198)
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7/11/2013 6:33 PM	Rate (0)
erku Advanced Member Joined: 4/14/2013 Last visit: 10/18/2024 Posts: 33 Rating: (1)	Hello to all! There is of course the possibility that the SD card was faulty. But unfortunately it happened. Here emerge also question, whether the error could occur in the power switching on/off operations? SD card sure.. However, a difference between the things is, if one paysXXX € and XXX € other (I hope). I chose this moment: http://www.cactus-tech.com/product_05_b.html They can also be fun to do: "- 4 Million Hour MTBF" (card is the usual in plastic casing)
	Last edited by: O_Moderator at: 7/12/2013 3:36 PM price deleted Last edited by: erku at: 7/11/2013 6:38 PM
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