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IM-S51-07 CTLS Issue 1
SP7-10, SP7-11, SP7-12 and SP7-20, SP7-21, SP7-22 Parameterization
3.11.3 TV UP – TV value (up)
NOTE
In the case of most actuators, all control parameters can be optimized by using Auto Adjust. Changes should
only be made when auto adjust cannot be executed or control stability cannot be achieved.
The TV value is the derivative time of the controller. The control speed and stability are affected by the TV value in such a way that it
counteracts the KP value dynamically. The control speed decreases as the TV value increases. To compensate for existing dissymmetries
in the controlled system, the TV value should be configured separately for both positioning directions (up / down).
Use the TV UP parameter to adjust the TV value for the upward positioning direction (towards 100 %).
3.11.4 TV DN – TV value (down)
NOTE
In the case of most actuators, all control parameters can be optimized by using Auto Adjust. Changes should
only be made when auto adjust cannot be executed or control stability cannot be achieved.
The TV value is the derivative time of the controller. Control speed and stability are affected by the TV value in terms of how this
dynamically counteracts the KP value. The control speed decreases as the TV value increases. To compensate for existing asymmetries
in the controlled system, the TV value should be configured separately for both positioning directions (up / down). Use the TV DN
parameter to adjust the TV value for the downward positioning direction (towards 0 %).
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