ABB PositionMaster EDP300 Operating Instruction page 60

60 PositionMaster EDP300 DIGITAL POSITIONER | OI/EDP300-EN REV. D
... 9 Operation
... Parameter descriptions
Menu / parameter Value range
Controller (continued)
KP Up 1.0 to 400.0
KP Down 1.0 to 400.0
TV Up 10 to 800 ms
TV Down 10 to 800 ms
Description
Use this parameter to adjust the KP value for the up positioning direction (towards 100 %).
The KP value is the gain of the controller. The control speed and stability are influenced by the KP value.
With higher KP values, the control speed increases.
To compensate for existing dissymmetries in the controlled system, the KP value should be set
separately for both positioning directions (up / down). For most actuators, satisfactory control
behavior is achieved with a KP value between 2.0 and 10.0.
Note
The control precision is not affected by the KP value.
Use this parameter to adjust the KP value for the down positioning direction (towards 0 %).
The KP value is the gain of the controller. The control speed and stability are influenced by the KP value.
With higher KP values, the control speed increases.
To compensate for existing dissymmetries in the controlled system, the KP value should be set
separately for both positioning directions (up / down). For most actuators, satisfactory control
behavior is achieved with a KP value between 2.0 and 10.0.
Note
The control precision is not affected by the KP value.
Use this parameter to adjust the KP value for the up positioning direction (towards 100 %).
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 this parameter to adjust the TV value for the down positioning direction (towards 0 %).
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).