Samson 3730-2 Mounting And Operating Instructions page 65

13* w-end
25.0 to 100.0 [100.0] % of
the reference variable range
ESC
14* Final position w <
0.0 to [1.0] %
of the span adjusted via
Code 12/13
OFF
ESC
Final position w >
15*
[OFF]
50.0 to 100.0 %
of the span adjusted via
Code 12/13
ESC
Pressure limit
16*
[OFF]
1.4 2.4 3.7 bar
ESC
17* KP step
0 to 17 [7]
ESC
Upper range value of the applicable reference variable range,
must be greater than w-start.
100 % = 20 mA
If w reaches up to 1 % towards the final value that causes the
valve to close, the actuator is immediately completely vented
(with AIR TO OPEN) or filled with air (with AIR TO CLOSE).
This action always lead to maximum tight-closing of the valve.
Codes 14/15 have priority over Codes 8/9/10/11.
If w reaches up to 99 % towards 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.
Example: Set the final position w > to 99 % for three-way valves.
The signal pressure can adopt the value of the applied supply
pressure at the maximum [ OFF ] or it can be limited in stages of
1.4, 2.4 or 3.7 bar. This pressure limitation is already effective
during the initializtation.
Note: After changing a pressure limit already set, the actuator
must be vented once (e.g. by selecting the fail-safe position over
Code 0).
Displaying or changing K
Note on changing the K
During the initialization of the positioner, the K
optimized.
Should the positioner show a tendency for impermissibly high
post-pulse oscillation due to additional interference, the K
steps can be adapted after the initialization.
For this, either the T
V
the desired response behavior is reached or, when the maximum
value of 4 is reached, the K
ments.
CAUTION! Changing the K
This effect decreases as the K
P
and T steps:
P V
step can be increased in increments until
step can be decreased in incre-
P
step influences the system deviation.
P
step increases.
P
Code list
and T values are
P V
and T
P V
65
EB 8384-2 EN