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SINAMICS V90, SIMOTICS S-1FL6 - STO Fault

Created by: ab1992 at: 1/4/2018 1:21 PM (9 Replies)

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1/4/2018 1:21 PM	Rate (0)
ab1992 Regular Member Joined: 6/22/2017 Last visit: 12/12/2024 Posts: 12 Rating: (0)	Hi everybody, I use a Drive model V90 (6SL3210-5FB12-0UF0). On the STO of this drive I have connected signals from a safety relay, which are used for a safety barrier. When invaded this barrier several times in a short time interval the drive has a fault (F1611: SI CU: Defect detect-ed Message class: Safety moni-toring channel has identified an error (10) Reaction: OFF2 Acknowledgment: IMMEDIATELY). This happens in three Drives, thus ruling out the possibility of a defect in the equipment. Another possible cause is to have a high signal in the STO1 and low signal in the STO2 (Or vice versa) as in the attached image, I imagined a delay when the safety relays are actuated, however the failure in the drive is only activated after 2s, long time for a delay in the closure of the safety relay, and therefore I also discarded failures in the safety relay. The only way to eliminate the fault is to power the drive off and on. Has anyone experienced this and knows how to solve this problem, avoiding failure? Attachment STO Fault.png (881 Downloads)

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1/9/2018 3:42 AM	Rate (0)
cliff.pennalligen Bronze Member Joined: 7/25/2017 Last visit: 12/20/2024 Posts: 336 Rating: (53)	You may be experiencing the issue described on page 3 of this FAQ, last paragraph: https://support.industry.siemens.com/cs/ww/en/view/109740693

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This contribution was helpful to 1 thankful Users sinnaiG

11/14/2019 12:11 AM	Rate (0)
SpikeStart Advanced Member Joined: 12/6/2015 Last visit: 11/28/2024 Posts: 32 Rating: (0)	Hi I am experiencing the same problem as you...Have you found the cause? Please if yes share with us, thanks!
	Last edited by: AutoGen_8968932 at: 11/14/2019 00:11:55
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11/15/2019 2:52 PM	Rate (0)
RB91 Gold Member Joined: 4/28/2015 Last visit: 10/22/2024 Posts: 1278 Rating: (301)	Hello, do you use STO function in your drive? If yes, check the FAQ that was posted. This should help. In case the signals for hardwired STO come from a device which do sporadic dark tests you need to disable the dark tests at that device (e.g. F-DO of PLC).
	Best regards, Robert
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1/29/2020 1:42 AM	Rate (0)
Guilherme Y Regular Member Joined: 4/3/2019 Last visit: 12/9/2024 Posts: 4 Rating: (0)	Hi ab1992, Have you found the solution ?

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1/29/2020 8:30 AM	Rate (0)
RB91 Gold Member Joined: 4/28/2015 Last visit: 10/22/2024 Posts: 1278 Rating: (301)	Please also check this FAQ. Always when I read about problems with STO and V90 I am quite sure this will help. Be aware of the control of hardwired STO -> your F-DO might do sporadic dark test which needs to be disabled.
	Best regards, Robert
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7/9/2020 8:35 PM	Rate (0)
sinnaiG Bronze Member Joined: 7/20/2009 Last visit: 1/16/2024 Posts: 61 Rating: (3)	Have anyone found the solution ???

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3/10/2021 2:29 PM	Rate (0)
Emanuele Croci Member Joined: 8/31/2015 Last visit: 3/12/2024 Posts: 1 Rating: (0)	I am also having the same problem. No solution till now....

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1/11/2024 11:29 AM	Rate (0)
AutoRNT Member Joined: 4/1/2022 Last visit: 10/4/2024 Posts: 2 Rating: (0)	Same problem here, no found solution, siemens ._.

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1/12/2024 8:42 AM	Rate (0)
Transponder Snail Member Joined: 6/27/2017 Last visit: 6/26/2024 Posts: 158 Rating: (21)	Hello, did someone start a Support Request and asked Siemens directly? If not, please start a support request to get a solution and if you want that everyone has a benefit from it: please share the answer from the support. P.S.: I hope you have read the forum rules and know that this is just a platform where users support each other and Siemens is not obliged to answer here..

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