Samson 3730-2 Mounting And Operating Instructions page 89

Code Parameter – Readings/
no.
values [default setting]
18* Derivative-action time T
(level)
1, [2], 3, 4, No, ESC
19* Tolerance band
0.1 to 10.0 %, [5.0 %] of
the operating range, ESC
20* Characteristic
[0] to 9, ESC
21* Required transit time
OPEN (w ramp open)
[0] to 240 s, ESC
22* Required transit time
CLOSED (w ramp closed)
[0] to 240 s, ESC
EB 8384-2 EN
Description
Read or change T
V
A change of the T
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.
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).
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.
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.
(see K level)
V P
level has no effect on the system deviation.
V
Code list
89