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SICAM PAS Redundancy

Created by: ensark2 at: 9/8/2010 9:20 AM (7 Replies)

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9/8/2010 9:20 AM	Rate (0)
ensark2 Bronze Member Joined: 11/18/2009 Last visit: 12/8/2025 Posts: 263 Rating: (18)	In my configuration I have one SICAM PAS CC connected to two SICAM PAS Full Servers which should work as redundant. I have checked SICAM PAS CC manual and it explains that it is possible to make redundancy with - WinCC script SicamPAS_ConnectionChange.pas - Process tag - ConnectionStateXXX - ForeceConnectionStateXXX In script it is explained that OPER tag can be used or Process tag. Has anyone tested this? Does anyone know is it needed to have Automation license for this to work since it does not say that SoftPLC blocks should be used. We didn't order Automation license so it would be good if it will work without it. I want to change from master to slave only if one SICAM PAS Server lose communication to the switch nothing more. IEC 61850 is used Best Regards Ensar

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9/10/2010 5:44 PM	Rate (0)
Mike J Platinum Expert Joined: 10/9/2007 Last visit: 12/18/2025 Posts: 1295 Rating: (116)	Hi Ensark2 What you want to do is possible, but maybe the description you are reading in the manual is for the other type of redundancy. In your case you want WinCC to connect to the first Sicam PAS, and only if this failes you want to connect to the second Sicam, right? If I'm not wrong, this is automatically done by WinCC (actually Sicam PASCC, which is the driver in WinCC to PAS) and you don't have to configure anything, or just copy a logic from the library for the switch over ... I'll confirm this. Normally the redundancy described below is used. Just configured both IP Addresses and make a test, disconnecting the first Sicam PAS from the network. You can see which Sicam is actually connected using the ConnectionState variable. The values are described in the manual. Just for the information: Normaly with Sicam PAS we select one of the to be the "master" or "active", while the other remains in standby mode. Depending on the protocols used, like IEC61850, you have hot-hot redundancy (both PAS have the same information from the system). The need to select a master happens: - when you have different operation stations, like several WinCC, control centers connected via OPC, IEC101/104 or DNP3, all operators must be connected to the same Sicam PAS. - when you have Automation in PAS (logics) in most case only one PAS process the logic and execute commands, while the other only executes the logic without command - when you have devices connected to PAS which has only one communication channel or the protocol only accepts one master like Modbus and IEC103. For this case you need Automation license in Sicam PAS and also to configure a logic in it. The logic is explained in Sicam PAS redundancy, and in fact is just copy-past-adapt. Mike J
	Energy Automation products: Sicam, Siprotec, Digsi
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This contribution was helpful to 2 thankful Users dchartier ensark2

9/14/2010 9:21 AM	Rate (1)
ensark2 Bronze Member Joined: 11/18/2009 Last visit: 12/8/2025 Posts: 263 Rating: (18)	Mike J, all I need is simple redundancy. I will try and see if this will be done automatically by WinCC. In my configuration I have one SICAM PAS CC, and two SICAM PAS. I want PAS CC to switch between SICAM PAS if one SICAM PAS fails. Also both SICAM PAS's are equipped with Redundand ethernet cards so I don't need to check connection between SICAM PAS and Ethernet switch. Please see attachment this would be enough. I think for this type of redundancy I won't need Automation license. I will have directly connected only IEC 61850 and IEC 104 devices. Best Regards Ensar Attachment Pages from PAS_CC_Manual.pdf (1220 Downloads)

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9/20/2010 9:12 AM	Rate (0)
Mike J Platinum Expert Joined: 10/9/2007 Last visit: 12/18/2025 Posts: 1295 Rating: (116)	Hi Ensar If both Sicam PAS have the same data, i.e.: both are connected to all devices in IEC61850 and IEC104, then you can use this kind of redundancy. You don't need Automation for this. Mike J
	Energy Automation products: Sicam, Siprotec, Digsi
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This contribution was helpful to 1 thankful Users ensark2

4/1/2015 12:28 PM	Rate (0)
mainensa Posts: 3 Rating: (0)	Hello Mike, I have also the redudancy problem you explained to ensark2. In my substation it happens that WinnCC connects to the first master and NDC connects via 104 to the second master, as you said in this case the command from Control center is not possible. In this substation I have automation license so could also apply the logic from redudancy manual. Would you be so kind and send me this manual, I have Sicam 6 in this substaion. Thank you in advance, Eni
mainensa Posts: 3 Rating: (0)
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4/6/2015 10:27 AM	Rate (0)
Subauto Posts: 37 Rating: (3)	Hello Ensar, If you use SICAM PAS V 7, then there is no need for logic in automation (Soft PLC)de. Install license for IEC61850 and IEC104 on both SICAM PAS. In WinCC and under Tag Management, right click on PAS Data Server this will open Channel unit properties dialog window. In this window click properties button then it will open Connection properties dialog, again there is Properties button, click on it then a PAS Connection dialog will open, in this dialog window chose V7 Redundancy in front of Connection Type and enter the IP address for both SICAM PAS. Now when first SICAM PAS fail, the WinCC will connect to second SICAM PAS automatically. If you use SICAM PAS V6, then you need to insert the Redundancy logic in Soft PLC.
Subauto Posts: 37 Rating: (3)
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4/6/2015 3:54 PM	Rate (0)
ensark2 Bronze Member Joined: 11/18/2009 Last visit: 12/8/2025 Posts: 263 Rating: (18)	Hi Subauto, if you check the year of my post (2010) you can see that it was long time ago. Thank you anyway. Best regards Ensar

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4/6/2015 4:17 PM	Rate (0)
mainensa Posts: 3 Rating: (0)	Hi Subauto, I suppose your post was to support me. As I already mentioned I have Sicam 6 and not 7, So probably is softplc configuration still needed? Thank you in advance Regards
mainensa Posts: 3 Rating: (0)
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