ABB 800xA Operation page 92

Enhanced Control Loop Monitoring Mode (Licensed mode)
•
Figure 50. Loop Performance details (Licensed)
The CLAM acquires the parameters PV, SP, and CO of a control loop from history
to calculate the Loop Diagnosis. It is worthwhile to consider the diagnosis by
CLAM for a control loop when all the latest values (equal to DataSetSize) in the
history are of good quality. In case the data set analyzed is not suitable for giving
diagnosis, the CLAM will indicate the same on the faceplate. Loop Performance
Monitoring Audit calculations evaluate the quality of input data based on the history
values. The quality of input data is displayed as Loop Diagnosis information, for
example Unknown (Current Data Not Analyzable).
Some parameters under FCE and Loop Performance tab may show
Unknown(Current Data Not Analyzable)
loading of the CLAM when it did not receive complete/sufficient data set values for
diagnosis to be published.
92
Loop Performance Details
Monitor summary results. It shows various parameters details of FCE as shown
in Figure 50 with diagnosis as tool tip text.
Section 8 Control Loop Asset Monitor
(Figure 50): Used to view Control Loop Asset
. This can happen during initial
3BUA000150-600