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SIPROTECH RELAY COMMUNICATION USING YLINK

Created by: samkcr at: 2/6/2010 2:42 PM (18 Replies)

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2/6/2010 2:42 PM	Rate (0)
samkcr Bronze Member Joined: 3/24/2009 Last visit: 8/7/2023 Posts: 406 Rating: (3)	Hi, I am using YLINK module to communicate siprotech relay in CPU414-4H system. I am monitoring the voltage distubance from the relay. But the problem i am not able to get the correct voltage drop value at the moment of accurance.Example actually the normal voltage was 11000 volts when the time of voltage drop it will reach up to 7000 volts.But in my recording it is capturing only 9000 volts. What may be the problem ? Is there any communication delay is happening ? How to rectify the problem ?
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2/7/2010 8:28 PM	Rate (0)
jklm Platinum Member Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating: (309)	Hello, I guess that the voltage drops that you want to catch are very dynamic events. I see at least two elements that may explain what you see: - the real rotation time of Profibus (it depends on the number of slaves, or on any other data running on the bus like diagnostics, I-slave communication, ...). The CPU can only get new values as fast as the bus transmits them. Step7 gives you some values in the Profibus network properties. - the cycle time of the CPU. In the worst case, you have to add this value to the bus cycle time (the had provided a new value just when that part of the program was already executed, which means that you will take it into account only the next CPU cycle).
	Best regards jklm Suggestion was helpful? Feel free to rate it.
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2/15/2010 6:42 PM	Rate (0)
samkcr Bronze Member Joined: 3/24/2009 Last visit: 8/7/2023 Posts: 406 Rating: (3)	Hi, Thanks for your reply.Can u explain me some what brief about this ? I made my baudrate setting in both end 19.2kbps so bcoz of this i am facing the problem ? Is it possible to set the baudrate above 19.2kbps in siprotech ?
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2/15/2010 7:30 PM	Rate (0)
umencho Diamond Expert Joined: 3/21/2006 Last visit: 1/14/2025 Posts: 10239 Rating: (1182)	samkcr Hi, Thanks for your reply.Can u explain me some what brief about this ? I made my baudrate setting in both end 19.2kbps so bcoz of this i am facing the problem ? Is it possible to set the baudrate above 19.2kbps in siprotech ? Hello, If I am not wrong, you could set max. 6Mb baud rate of profibus network in siprotec com. module. So, idea is to increase possibilities to "catch" more of dinamics... best regards, Hristo Mihalev

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2/16/2010 10:09 AM	Rate (1)
Mike J Platinum Member Joined: 10/9/2007 Last visit: 1/17/2025 Posts: 1253 Rating: (115)	Hi You can use upto 6Mb/s in RS485 card and 3MB/s in optical card from Siprotec. Take a look at this info: http://siemens.siprotec.de/download_neu/devices/1_General/Doku_Protokolle/Englisch/Profibus%20DP/SIPROTEC4_PROFIBUS_DP_FAQ_en.pdf But I'm not sure if by simply using a higher speed, you will get what you want.Siprotec is a protection device, which can be used for control and monitoring, but it isstill a protection device. If the voltage drop you are simulating is fast as it occurs in real life, Siprotec will process this "electrical failure" and execute a trip command (open a circuit breaker). Meanwhile all other functions are running in background with lower priority and you may not be able to see it via profibus. For electrical systems we don't need to see voltage or current values during a fault (e.g.: short circuit, voltage drop etc), because they are too fast and there's no time to wait for an action from operator. For this reason we use devices as Siprotecs, which simply eliminate the fault by opening the circuit breaker and send informations to the operator via alarm and fault records. In the fault record you can see exactly what happened: voltage drop withvalues in a milisecond scale. Fault Records are automatically saved in Siprotec when a failure in electrical system occurs. You can retrieve them via Digsi or via IEC103, Profibus FMS and IEC61850, but not Profibus DP. Once I used some ET200 in Profibus DP with 1.5Mb/s. Electric values changed so oftenly, that it was not possible to read them. For this reason we normally used Threshold, so minimum changes in values are not updated in the system. This is the opposite you want to do, but this is what occurs in real life in electrical plants. Hope I could help! Mike J
	Energy Automation products: Sicam, Siprotec, Digsi
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3/28/2010 4:36 PM	Rate (0)
samkcr Bronze Member Joined: 3/24/2009 Last visit: 8/7/2023 Posts: 406 Rating: (3)	Hi, Sorry for replying late... I understand that Voltage disturbance recordings is not possible to acheive in Profibus DP communication. Actualy my requirement is to get the voltage disturbance from relays.But currently i took values of voltages from relay and displayed in WINCC trends with milli second updation.And also i have to know through profibus DP communication it is possible to acheive the time synchronization ?
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3/29/2010 1:47 PM	Rate (0)
Mike J Platinum Member Joined: 10/9/2007 Last visit: 1/17/2025 Posts: 1253 Rating: (115)	Hi Time synchronization is possible, depending on your hardware. Take a look at page 8 from this doc: http://siemens.siprotec.de/download_neu/devices/1_General/Doku_Protokolle/Englisch/Profibus%20DP/SIPROTEC4_PROFIBUS_DP_FAQ_en.pdf As far as I know WinCC won't record values at 1 milisecond. The minimum time for TagLogging is 500ms, and with a change in registry it is 250ms, but not recommended. Fault records from Siprotec have 16 values per cycle (1 sample/1.04ms in 60Hz or 1 sample/1.25ms in 50Hz). Mike J
	Energy Automation products: Sicam, Siprotec, Digsi
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3/29/2010 5:42 PM	Rate (0)
samkcr Bronze Member Joined: 3/24/2009 Last visit: 8/7/2023 Posts: 406 Rating: (3)	Hi, Thanks for your reply. I am using IM153-2 high feature module only.I think it can be possible. But i have to know what are all the specific setting i have to give in siprotech as well as in IM153-2 OR in S7414H ? Bcoz i didn't find any document or datas related to this topic.Plz help me to acheive this. What was the exact protocol or module i have to consider to get voltage disturbance ?
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3/31/2010 11:59 AM	Rate (0)
Mike J Platinum Member Joined: 10/9/2007 Last visit: 1/17/2025 Posts: 1253 Rating: (115)	Hi For Siprotec you have these manuals: http://siemens.siprotec.de/download_neu/devices/1_General/Doku_Protokolle/Englisch/Profibus%20DP/Profibus_DP_with_SM_3-1_since_3-n/COM_PROFIBUS_PROFILE_US.PDF http://siemens.siprotec.de/download_neu/devices/1_General/Doku_Protokolle/Englisch/Profibus%20DP/SIPROTEC4_PROFIBUS_DP_ServiceInfo_Optical_en.pdf For your question about "voltage disturbance": do you want to know which devices have the Voltage protection? Mike J
	Energy Automation products: Sicam, Siprotec, Digsi
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4/2/2010 3:47 PM	Rate (0)
samkcr Bronze Member Joined: 3/24/2009 Last visit: 8/7/2023 Posts: 406 Rating: (3)	Sir, I have to know what is the exact module i have to select in our controller side to get voltage disturbance recording from siprotech relay( through Profibus FMS) .Bcoz currently i came to know that through DP communication it is not possible ? So what i can do ? Please guide me. Then for time synchronization i am using YLINK with a part.no of 6ES7197-1LA04-0XA0.So it issuitable for this ?
	Last edited by: samkcr at: 4/3/2010 9:00 AM Last edited by: samkcr at: 4/3/2010 8:24 AM All is well :-)
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