Samson 3730 Series Mounting And Operating Instructions page 75

8* Lower x-range value
0.0 to 80.0 [0.0] % of the
nominal range,
Specified in mm or angle ° provided
Code 4 is set
ESC
Upper x-range value
9*
20.0 to 100.0 [100.0] %
nominal range,
Specified in mm or angle ° provided
Code 4 is set
ESC
Lower x-limit
10*
[OFF]
0.0 to 49.9 % of the
operating range
ESC
11* Upper x-limit
[100 %]
50.0 to 120.0 [100] % of
the operating range
or OFF
ESC
Lower range value for the travel/angle of rotation in the nominal
or operating range.
The operating range is the actual travel/angle of the control
valve and is limited by the lower x-range value (Code 8) and the
upper x-range value (Code 9).
Usually, the operating range and the nominal range are iden-
tical. The nominal range can be limited to the operating range by
the lower and upper x-range values.
Value is displayed or must be entered.
The characteristic is adapted. See also the example in Code 9!
Upper range value for the travel/angle of rotation in the nominal
or operating range. Value is displayed or must be entered.
The characteristic is adapted.
Example: The operating range is modified, 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 reference variable
is converted to the new limits. 0 % on the display corresponds to
the set lower limit and 100 % to the set upper limit.
Limitation of the travel/angle of rotation downwards to the en-
tered value, the characteristic is not adapted.
The characteristic is not adapted to the reduced range. See also
example in Code 11.
Limitation of the travel/angle of rotation upwards to the entered
value, the characteristic is not adapted.
Example: In some applications, it makes sense to limit the valve
travel, e.g. if a certain minimum medium flow is required or a
maximum flow 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 OFF, the valve can be opened past the nominal
travel with a reference variable outside of the 4 to 20 mA range.
Code list
75
EB 8384-3 EN