Flowserve APEX A9000 Accord - Manual (Page 27)

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Leakage Air leakage in actuator/tubing can be compensated by settings.
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P,I,D and K,Ti,Td parameters
If one of the gains is changed, the corresponding value in the other gain set is changed accordingly.
Spring adjust
The spring adjust function compensates the airflow linearly with the actuator C+ chamber volume (for a constant position
error), so that low volumes get less flow. This is needed for linear single-acting actuators, where a low C+ volume means
that the actuator spring is extended, its force is reduced, and less flow is needed for stable position change.
Fiction
High or Low: Select High for high friction valve actuator assemblies such as plug valves
Deviation Alarm generated when deviation occurs
On/Off Alarm on/off.
Distance Allowed distance before alarm is generated.
Time Total deviation time before alarm is generated.
Alarm out Select ON/OFF offers output on terminals.
Valve act Behaviour of valve when alarm is generated.
Limit 1 Alarm above/below a certain level.
On/Off Alarm on/off.
Minipos Setting of desired min. position
Maxpos Setting of desired max.position See Diagram Below!
Hysteresis Desired hysteresis.
Alarm on Select ON/OFF offers output on terminals.
Valve act Behaviour of valve when alarm is generated
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Alarms