Final Control Element Summary Section 8 Control Loop Asset Monitor (CLAM)94 3BUA000150-6002. The indices are compared with certain thresholds. If the threshold is exceeded,the resulting signal is set to one and to zero if not.3. The thresholded signals are combined into pre-conditions/diagnoses.4. The pre-conditions are multiplied with pre-defined weights. All weights arenormalized with the sum of all weights so that the weighted signals sum to oneif all pre-conditions are true.5. The weighted signals are then summed together and the result is a numericalvalue of the loop health.6. The sum is filtered according to the formula Dcurrent = Filter*D + (1-Filter)*Dpast. This means that the temporary errors will not affect the result asmuch as those which are present for a longer period of time.The filtered sum is compared to certain severity levels and is presented in System800xA alarm list.Final Control Element SummaryThe Final Control Element Summary calculation is described in Figure 52.Performance indices for stiction/backlash, leakage and non-linearity are thresholdedand multiplied with predefined weights.In order to get reliable diagnoses, it is very important that the CLAMconfiguration parameters are properly configured.Figure 52. Final Control Element Summary Calculation
