PT1-Term
![](files/Common/function%20blocks/Funktionsbausteine%20DE/Standarduebertragung/PT1-Glied_FB.png)
This function block implements a first-order filter using the difference equation.
Operations
The PT1-term realizes the following function:
![](files/Common/function%20blocks/Funktionsbausteine%20DE/Standarduebertragung/PT1-Glied_Formel.png)
The coefficient K will be calculated only at the program start or if T1 is changed.
Step response:
![](files/Common/function%20blocks/Funktionsbausteine%20DE/Standarduebertragung/PT1-Glied_Diagramm.png)
Signals
Name | I/O | Type(s) | Function |
---|---|---|---|
Xe | I | FLOAT | Input signal |
T1 | I | FLOAT | Time constant in [s] |
Xa | O | FLOAT | Output signal |
Comments
The function block may be used in analogue measurement filtering applications, or as part of a dynamic system simulation.