AO845 modules in a redundant pair put out the half output value each if they are in the same
Problem:Solution
- The problems are solved in PR:B by change in the firmware on AO845.
[ref 3BSE034230 VASMASOITA0871 ]
- AO845 modules in a redundant pair put out the half output value each if they are in the same
Product concerned
S800 I/O
Hardware concerned
AO845 PR: A
Wrong OSP behaviour
AO845 modules in a redundant pair put out the half output value each if they are in the same state, Operational or OSP.
If only one module in a redundant pair of AO845 goes to OSP. This module shall not stay in OSP.
After about 0.4s the module shall go to error but sometimes the module stays in OSP. The problem will effect output value first after a parameter change of the OSP value and that the other module also has gone to OSP.
In that case the output value will be wrong. It will be 50% of the old OSP value plus 50% of new OSP value instead of 100% of the new OSP value
Error at parameter change
When changing parameter e.g. set channel passive or active, on a redundant AO845 pair sometimes one of the modules goes to error.
- Article imported from the previous version of KnowledgeBank
Asked 14 years ago
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