Offset

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Offset

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How to use the Position Offset at Single Valve

If the User wants to set a Position Offset, than the first step would be to “Enable” the “Position Adaption”, what is possible over the CPA4 under Parameters.Valve.PositionAdaption.Enable à “TRUE” or via RS232 Command – see Chapter Set Position Offset via RS232

Enable - Position Adaption

Picture : Enable - Position Adaption

 

The Parameter “Actual Position”, what is shown in picture bellow, is a possibility for the user to show the Adapted Position or the Real Position of the Valve.

Actual Position:

Real

=

Position Setpoint + Offset

 

Adapted

=

Position Setpoint

 

Actual Position - Option

Picture : Actual Position - Option

 

Now, if the Position Adaption is «Enabled» the user can set under the Parameter Parameter.Valve.PositionAdaption.Offset the desired Offset.

 

For example the User want to set an Offset = 5 and have selected the Option Actual Position = Real at Position Setpoint = 0.

Example with Actual Position - Real

Picture : Example with Actual Position Option - Real

 

In this example is an Offset = 5 set and the Actual Position = Adapted at Position Setpoint = 40.

Example with Actual Position Option = Adapted

Picture : Example with Actual Position Option = Adapted

 

The Position Offset is not active, if an Open or Close command is processed or the Valve is in Control Mode: Open or Close.