Hello, I have a customer with a large installed base of TeSys U without meeting the security category.
There is a great need to adapt these starters with TeSys U to category 2 using prevent relay but I don't know how to proceed with that.
Can someone help me how would the interruption for safety? All TeSys U are via CanOPEN communication.
If I understand correctly your question, you want to stop a whole set of Tesys U controlled by CANopen with a given safety level.
If you want to keep the CANopen communication alive, you need to switch off the 24VDC supply of the LULC08 module. In this case, as the supply of the communication is given by the DB9 connector, you won't loose the communication. You need to ensure that you can switch off all the Tesys U supplies. If they come from a single source, it shouldn't be too difficult.
Depending on the safety level you need to reach, you may need other means.
If you need more information
I performed some tests on this approach but this could even cause the module to burn, right? below is a video made.
Unfortunately I can't see the video you posted. Which module may burn ? Safety module has maximum current capability to switch and depending on the number of CanOpen devices, it may be a limitation. To prevent it you may need to have an external relay / contactor interfaced with the safety module but I need to get further information to be sure if this is really your concern.
Maybe this drawing will help ?
Thank you for your interest on Tesys U and its associated communication module and thank you for your question that will help us to be more precise on the solutions we propose. We are currently gathering all the information needed to provide a validated solution and will come back to you as soon as possible with this objective
I will contact with you by e-mail and phone as this is a complex matter with local standard.
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