Samson 3730-2, Монтаж и эксплуатация, Страница: 89 / 128

EB 8384-2 EN 89
Code list
Code
no.
Parameter – Readings/
values [default setting]
Description
18* Derivative-action time T
V
(level)
1, [2], 3, 4, No, ESC
Read or change T
V
(see K
P
level)
A change of the T
V
level has no effect on the system deviation.
19* Tolerance band
0.1 to 10.0 %, [5.0 %] of
the operating range, ESC
Used for error monitoring.
Determination of the tolerance band in relation to the operating
range.
Associated lag time (30 s) is a reset criterion.
If a transit time is determined during initialization which is six times
longer than 30 s, the six-fold transit time is accepted as the lag time.
20* Characteristic
[0] to 9, ESC
Select characteristic
0
Linear
1 Equal percentage
2 Reverse equal percentage
3 SAMSON butterfly valve, linear
4 SAMSON butterfly valve, equal percentage
5 VETEC rotary plug valve, linear
6 VETEC rotary plug valve, equal percentage
7 Segmented ball valve, linear
8 Segmented ball valve, equal percentage
9 User-defined (defined over operator software)
Note
The various characteristics are listed in the Appendix (section 16).
21* Required transit time
OPEN (w ramp open)
[0] to 240 s, ESC
Time required to move through the operating range when the valve
opens.
Limitation of the transit time (Code 21 and 22):
For some applications it is recommendable to limit the transit time of
the actuator to prevent it from engaging too fast in the running pro-
cess.
Code 21 has priority over Code 15.
NOTICE !
The function is not activated when the fail-safe function or solenoid
valve is triggered nor upon failure of the auxiliary power.
22* Required transit time
CLOSED (w ramp closed)
[0] to 240 s, ESC
Time required to move through the operating range when the valve
closes.
Code 22 has priority over Code 14.
NOTICE !
The function is not activated when the fail-safe function or solenoid
valve is triggered nor upon failure of the auxiliary power.