The numerical filtering function configurable for every input channel is a low pass first order.
The mathematic formula used is:
Measn = K * Measn-1 + (1- K) * Valn
With: K is the filter efficiency,
Measn is the filtered measure at time n,
Measn-1 is the filtered measure at time n-1,
Valn is the actual input value measured at time n.
The sample time (from time n-1 to time n) is about 10ms.
The mathematic formula used is:
Measn = K * Measn-1 + (1- K) * Valn
With: K is the filter efficiency,
Measn is the filtered measure at time n,
Measn-1 is the filtered measure at time n-1,
Valn is the actual input value measured at time n.
The sample time (from time n-1 to time n) is about 10ms.
| Filter efficiency | Filter Level | Corresponding K value |
| No filtering | 0 | 0 |
| Smooth filtering | 1 2 | 0,750 0,875 |
| Average filtering | 3 4 | 0,937 0,969 |
| High filtering | 5 6 | 0,984 0,992 |
Publikováno pro:Schneider Electric Česká republika
