GE BAKER HUGHES Masoneilan SVi 1000, Быстрый старт

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Setting Aggressiveness While the SVi1000 DTM and the DD allow you to set
Aggressiveness, the pushbuttons do not. In all three
methods, however, the Aggressiveness value is inher-
ited from any previously performed tuning (Autotune or
manual). Once Aggressiveness, and other tuning values
are determined, they are stored in NVRAM.
The SVi1000 provides a user define Aggressiveness
Level for auto-tuning, the allowable range varies from
-9 to +9 where 0 (Zero) is consider normal tuning. The
Aggressiveness Level influences stroking speed and
over-shoot. A negative value will SLOW stroking speed
and help minimized over-shoot. A positive value will
INCREASE stroking speed and may add some
over-shoot. The recommended values for Aggressive-
ness is 0 for control valves without volume boosters.
In applications with volume boosters and/or quick
exhaust valves are used the Aggressiveness Level is
not as influential. For Auto-tuning it is usually between
0 and 3. Reduce the volume boosters sensitivity by
opening the integral bypass needle valve about 1 to 2
turns. Use caution when adjusting the needle valve so
as to not to damage the seat, close gently to seat and
then open 1 or 2 turns.
Aggressiveness Dynamic Lower values of aggressiveness lead to lower PID val-
ues and slower response and less overshoot.
Higher values lead to higher PID values and quicker
response and more overshoot.
Once you have a preferred aggressiveness and you
tune once, all future autotunes automatically use that
same value, until user-changed.
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Notes on Aggressiveness