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Chapter 4: Communication-Based Operation
4.4.2 Zero/span adjustment
[Valve fully closed position configuration]
The procedure for setting the valve fully closed position is shown below.
Step Procedure
1 Select [Device] >> [Setup] >> [Zero/Span Adjustment] >> [Angle Adjustment] >> [Zero].
2 Input the input signal that is to fully close the valve.
3 If the forced fully closed setting (travel cutoff low) is 0% (default value + 0.5%) or higher,
the screen for configuring the travel cutoff low will appear. Set it to 0% or lower.
4 From the [Zero Adjustment] menu, select a combination of the angle size and the
increment or decrement for which to perform the adjustment. To increment by 0.03°,
select [Increment/0.03].
5 Perform zero adjustment by carrying out step 4 above multiple times.
6 When adjustment is complete, select [Exit] on the [Zero Adjustment] menu.
7 The screen for the forced fully closed setting will appear. If you have already modified this
value, return to the original value.
8 Select [Exit] from the [Zero/Span Adjustment] menu.
[Valve fully open position configuration]
The procedure for setting the valve fully closed position is shown below.
Step Procedure
1 Select [Device] >> [Setup] >> [Zero/Span Adjustment] >> [Angle Adjustment] >> [Span].
2 Input the input signal that is to fully open the valve.
3 From the [Span Adjustment] menu, select a combination of the angle size and the
increment or decrement for which to perform the adjustment. To decrement by 0.03°,
select [Decrement/0.03].
4 Perform span adjustment by carrying out step 3 above multiple times.
5 When adjustment is complete, select [Exit] on the [Span Adjustment] menu.
6 The screen for setting the forced fully open value will appear. Set it if necessary.
(Normally, this will not need to be set.)
7 Select [Exit] from the [Zero/Span Adjustment] menu.
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