Samson 3730-2 - Page 128

128 EB 8384-2 EN
Appendix
Code
no.
Parameter–Readings/
values [default setting]
Description
9* Travel/angle range end
(upper x-range value)
20.0to[100.0%]ofthe
nominal range, ESC
Note: Specied in mm or
angle ° provided Code 4
is activated.
Upperrangevaluefortravel/angleinnominaloroperatingrange
The value is displayed or must be entered.
The characteristic is adapted.
Example: Theoperatingrangeismodied,forexampletolimitthe
range of a control valve which has been sized too large. For this
function, the entire resolution range of the set point is converted to
the new limits.
0%onthedisplaycorrespondstotheadjustedlowerlimitand
100%totheadjustedupperlimit.
10* Travel/angle lower limit
(lower x-limit)
0.0to49.9%oftheoper-
ating range, [No], ESC
Limitstravel/openingangletotheenteredvalue(lowerlimit).The
characteristic is not adapted.
The characteristic is not adapted to the reduced range. See also the
exampleinCode11.
11* Travel/angle upper limit
(upper x-limit)
50.0to120.0%,
[100.0%]oftheoperating
range, No, ESC
Limitstravel/angletotheenteredvalue(upperlimit).Thecharacter-
istic is not adapted.
Example: In some applications, it is better to limit the valve travel,
e.g.ifacertainminimummediumowisrequiredoramaximum
owmustnotbereached.
ThelowerlimitmustbeadjustedwithCode10andtheupperlimit
withCode11.
If a tight-closing function has been set up, it has priority over the
travel limitation.
WhensettoNo,thevalvecanbeopenedpastthenominaltravel
withasetpointoutsideofthe0to100%range.
12* w-start
[0.0]to75.0%oftheset
point range, ESC
The lower set point range value must be lower than upper range val-
ue(w-end),0%=4mA.
The set point range is the difference between w-end and w-start and
mustbeΔw≥25%=4mA.
Whenthesetpointrangeof0to100%=4to20mA,thevalve
mustmovethroughitsentireoperatingrangefrom0to100%
travel/angleofrotation.
In split-range operation, the valves operate with smaller set points.
The control signal of the control unit to control two valves is divided
such,forinstance,thatthevalvesmovethroughtheirfulltravel/
angleofrotationatonlyhalftheinputsignal(rstvalvesetto0to
50%=4to12mAandsecondvalvesetto50to100%=12to
20mA).