Yokogawa YVP20S User Manual

Page 143

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14-17

IM 21B04C50-01E

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<14. DIAGNOSTIC SERVICES>

c)

Cyclical / Dead Band Test

This test is used to determine the maximum value of marginal changes in the input level
that does not move the control valve.

Figure14.15.3a Dead Band Test Setting

Figure 14.15.3b Dead Band Test Graph

Note: YVP110 stops integral function at the Dead Band Test. Therefore, the responding actual position has deviation from Set

Point.

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