Samson S2000 Instruções de Operação Página 83

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Code
no.
Parameter – Display, values
[default setting]
Description
Note: Codes with marked with an asterisk (*) must be enabled with Code 3 prior to configuration.
15*
Set point range end
(w-end)
50.0 to 100.0 %
of the span adjusted via
Code 12/13
[No], ESC
If w approaches the percentage adjusted at the final value that
causes the valve to open, the actuator is immediately completely
filled with air (with AIR TO OPEN) or vented (with AIR TO
CLOSE). This action always lead to the valve being completely
opened.
Codes 14/15 have priority over Codes 8/9/10/11.
Codes 21/22 have priority over Codes 14/15.
Example: Set the final position w > to 99 % for three-way valves.
16*
Pressure limit
1.4 2.4 3.7 bar
[No], ESC
The signal pressure to the actuator can be limited in stages.
After changing a pressure limit already set, the actuator must be
vented once (e.g. by selecting the fail-safe position (SAFE) over
Code 0).
NOTICE
Do not activate the pressure limit for double-acting actuators with
valve closed position AIR TO OPEN (AtO).
17*
Proportional-action
coefficient KP (step)
0 to 17 [7]
ESC
Displaying or changing K
P
Note on changing the K
P
and T
V
steps:
During the initialization of the positioner, the K
P
and T
V
values are
optimized.
Should the positioner show a tendency for impermissibly high
post-pulse oscillation due to additional interference, the K
P
and
T
V
steps can be adapted after the initialization.
For this, either the T
V
step can be increased in increments until
the desired response behavior is reached or, when the maximum
value of 4 is reached, the K
P
step can be decreased in incre
-
ments.
NOTICE
Changing the K
P
step influences the system deviation.
18*
Rate time TV (step)
1 [2] 3 4
No, ESC
Displaying or changing T
V
,
see note under K
P
step
A change of the T
V
step has no effect on the system deviation.
EB 8384-4 EN 83
Code list
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