10/4/2012 6:48 AM | |
Joined: 11/8/2011 Last visit: 8/21/2024 Posts: 387 Rating: (43) |
Hi kewl, Can you Please mention the Rack which you are using. Some of the points from the manual is it as per that. You can find the manual here below mentioned link in section 3.2 http://support.automation.siemens.com/WW/view/en/1117740 Designing a redundant power supply Redundant operation is possible with any of the S7 CPUs and racks described in this manual. STEP 7 as of V4.02 is also required. To design a redundant power supply, insert a power supply module into slots 1 and 3 of the rack. You can then insert as many modules as can be supplied by a single power supply module. In other words, in redundant operation all the modules can only draw a total of 10 A. Features ● A redundant battery concept (backup concept) is only provided when two backup batteries are used in each of the power supply modules. If only one battery is used in each module, only non-redundant backup is possible, since both batteries are being used at the same time. |
10/4/2012 8:15 AM | |
Posts: 15 Rating: (1) |
Dear Saga Thanks for the reply. I did go through the manual suggested by you and also of 414H before posting this. Thats why I tried without calling OB81 too but it doesnt help. However in the manual mentioned by you, I have a query about CR2 mentioned. Sec 3.2 " The failure of a power supply module is registered via a plug and remove interrupt (default STOP). If used in the second segment of the CR 2 no message is sent if the power supply module fails "This is the problem I am facing, it goes into (default STOP) mode. Here what does second segment of CR2 mean? In my configuration I have PS -1 in slot one and PS-2 in slot 3. and I have OB81 PS_FLT configured. Is there any SFC I need to call to make things happen?. Whenever I switch off the PS it generates an EXTF (which is ok) also an INTF ( I need to avoid this). so does something needs to be done in programming? |
10/4/2012 8:30 AM | |
Joined: 11/8/2011 Last visit: 8/21/2024 Posts: 387 Rating: (43) |
Hi Kewl, Insert/Remove Module Interrupt Organisation Block (OB83) are you using. |
10/4/2012 10:37 AM | |
Posts: 15 Rating: (1) |
Thanks Saga By putting in OB83, the problem is solved. Thanks again |
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