12/18/2006 9:58 AM | |
Posts: 3 Rating:
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[:cry:] It's been a long time I am having a tough time solving redundancy problems on the CPU 417H almost the same to this problem - though mine I believe is worse. The plant is using PCS7 V5.1 for more than 5 years and the redundant controllers are working just fine. One day, the plant operation went crazy. At first we thought the problem is on the pressure control valve. But when we went to the controller we found that both CPUs of the H system are in MASTER mode and the following LEDs are lit: REDF, IFM1F, IFM2F. We turned off the second CPU and the plant went back to normal operation. During the plant shutdown, we tried to solve the redundancy failure. We tried replacing the following with spares: CPU 417, sync modules, sync cables and even the rack. But we are not successful. Both CPUs are MASTER and the ET200Ms get crazy selecting to which CPU to connect. After two weeks, the same problem occured to a different set of CPU417H controller. I am attaching the diagnostic buffer from the redundant CPUs. HELP!!!!!!! AttachmentJASON_3nov.zip (581 Downloads) |
Last edited by: CS Moderator at: 12/18/2006 9:14 PMSplitted and renamed thread |
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