2/16/2010 10:09 AM | |
Joined: 10/9/2007 Last visit: 9/18/2024 Posts: 1249 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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This contribution was helpful to1 thankful Users |
3/29/2010 1:47 PM | |
Joined: 10/9/2007 Last visit: 9/18/2024 Posts: 1249 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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3/31/2010 11:59 AM | |
Joined: 10/9/2007 Last visit: 9/18/2024 Posts: 1249 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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4/7/2010 9:52 AM | |
Joined: 10/9/2007 Last visit: 9/18/2024 Posts: 1249 Rating: (115) |
Hi You cannot use Profibus FMS!
AttachmentRecprotec.zip (144 Downloads) |
Energy Automation products: Sicam, Siprotec, Digsi |
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4/30/2010 11:13 AM | |
Joined: 10/9/2007 Last visit: 9/18/2024 Posts: 1249 Rating: (115) |
Hi I made a mistake. 250ms is only possible for Alarm Logging, not for TagLogging. https://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=en&siteid=csius&aktprim=0&extranet=standard&viewreg=WW&objid=10805588&treeLang=en I think for your case the only solution is Recprotec, then you have a real fault record. Mike J |
Energy Automation products: Sicam, Siprotec, Digsi |
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5/10/2010 10:24 AM | |
Joined: 10/9/2007 Last visit: 9/18/2024 Posts: 1249 Rating: (115) |
Hi Samkcr I'm not sure. Maybe Siprotec or Profibusneeds time to correct the synchronization.I know some systems that don'tchange the time at once when the difference between telegrams is big, because this could be an error in the clock. Do you know how often Profibus DP master is sending clock telegrams? Better contact support.energy@siemens.com Mike J |
Energy Automation products: Sicam, Siprotec, Digsi |
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5/21/2010 9:44 AM | |
Joined: 10/9/2007 Last visit: 9/18/2024 Posts: 1249 Rating: (115) |
Hi Better contact Energy support. Mike J |
Energy Automation products: Sicam, Siprotec, Digsi |
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