Yokogawa YVP20S - Manual (Page 110)

10-12
<Toc> <Ind> <10. CALIBRATION SERVICES>
IM 21B04C50-01E
● Internal Gain
This position control parameter shows the total gain for an I/P module, control relay and
valve.
● Servo Offset
Initial valve of an integrator.
Table 10.2 Advanced Servo Tuning Parameters Ranges
1.9 0 (disables);
0.1 to 10. % Boost On Threshold 1
2.9 0 (disables);
0.1 to 10. (1)
≥ (2)
%
Boost Off Threshold 1
Boost On Threshold 2
1 0 (disables);
0.1 to 10. %
Boost Off Threshold 2 1 0 (disables);
0.1 to 10. %
Boost Value 1 8 0 to 50 % of MV
Boost Value 2 10 0 to 50 % of MV
Servo I Sleep Lmt 0 to 10 seconds
Servo P Alpha 0 (Off)
0
0 to 100 %
Internal Gain 5 0.5 to 50 rad. /mA
Servo Offset 50 0 to 100 % of MV
T1002.EPS
Parameter Initial Value Range of Values Units
In the case of the double acting actuator type, clicking on the More button allows for setting
the following parameters for the double acting actuator type.
Figure 10.12 Advanced Servo Parameters (doubleacting)
● X Boost On Threshold 1 and X Boost On Threshold 2 (Exhaust Boost On
Threshold 1/2)
This control parameter makes the boost on the exhaust side asymmetric to that on the air
supply side. Based on the Boost On Threshold 1 and Boost On Threshold 2 values, input a
difference for change.