128
EB 8384-3 EN
Appendix
Code
no.
Parameter
– Readings/
values [default setting]
Description
8*
Travel/angle range start
(lower x-range value)
[0.0] to 80.0 % of the
nominal range, ESC
Specified in mm or angle °
provided Code 4 is acti-
vated.
Lower range value for travel/angle in nominal or operating range
The
operating range
is the actual travel/angle of the valve and is
limited by the lower travel/angle range value (Code 8) and the up
-
per travel/angle range value (Code 9).
Usually, the operating range and the nominal range are identical.
The nominal range can be limited to the operating range by the low-
er and upper x-range values.
The value is displayed or must be entered.
The characteristic is adapted. See also the example in Code 9.
9* Travel/angle range end
(upper x-range value)
20.0 to [100.0 %] of the
nominal range, ESC
Specified in mm or angle °
provided Code 4 is acti-
vated.
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 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 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 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 No, the valve can be opened past the nominal travel
with a set point outside of the 0 to 100 % range.
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