KROHNE Summit 8800 Vol 2 - Manual (Page 126)

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SUMMIT 8800 RUN SWITCHING 07
7 .3 Stream configuration
For each stream that is involved with switching, the following configuration must be set:
Figure 126 Stream configuration run switching
The configuration consists of 3 differen parts which will be describe in the following paragraphs:
General Determines when to switch the stream
Valve control Determines which valves must be controlled to switch
Flow control Determines how to control the flow when through the stream
7 .3 .1 General
When run swiching needs to switch up (a new stream is added) it has to know which of the
streams to take. Each stream can be given a priority, from 1 (or always used) to 5 (last stream to
be added.
Also the flow switch point has to be given; add a new stream when above the maximum capacity
of the stream and close a stream when below a minimum capacity:
Figure 127 Stream run switching switch conditions
Run priority Priority of this stream (1-5)
Max. capacity Maximum capacity in % of the stream before opening a new stream
Min. capacity Minimum capacity in % of the stream before closing a stream
Please ensure that for streams 2..5 the minimum capacity is chosen such that it
will be closed in time to arrive at a proper flow of the stream before, e.g. 45 %