Commissioning Instructions

11
Siemens
A6V12066162_en
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_b
Smart Infrastructure
2021
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08
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06
Parameters Description
Cyclical transmission
(Transmission of
maximum position)
Defines the time interval for sending the actuating value with
object “Maximum position”.
● If there is more than one device (valve actuator or heating
boiler) in a plant, option “No cyclical transmission” must be se-
lected.
● If there is only one device (valve actuator or heating boiler) in
a plant, the transmission cycle for maximum position can be
parametrized into every x min to define the time when the de-
vice initiates comparison of actuating values by sending its
own value.
Cyclical transmission
(Transmission of
overridden mode)
Defines the transmission period of the overridden mode:
● No cyclical transmission: No period transmission of the "Over-
ridden" mode. The state is transmitted only when changed.
● x min: Time interval of overridden mode transmission.
Calibration strategy Two calibration strategies are available:
● If the first strategy is selected, the valve is measured during a
calibration run (e.g. after reset) and the “valve open” and
“valve closed” positions are stored. The calibration run is per-
formed twice after download and the resulting values are
compared for plausibility. The calibration runs max. three
times until two successive matching value pairs are meas-
ured. These values are stored and the positions used for fu-
ture runs. The measured values are compared to the values
saved during calibration so that the process is only performed
once for plausibility.
● If the second strategy is selected, only the “Open” valve posi-
tion is calculated by working back a set path from the closing
position. To close the valve, the actuator pushes out the tap-
pet until the set force is exerted on the valve.
If the second strategy is selected, as shown below, the stroke
is calculated based on the position where the actuator pushes
the valve to the end regardless of the parameter "Open-
ing/closing direction" set to "Normal (closed with pushed tap-
pet)" or "Inverted (open with pushed tappet)". When combin-
ing strategy 2 with inverted mode, set "Calibration Stroke" to a
proper value and make sure normally-closed valves can be
fully closed.
push to the
end position
0%
Preset
Stroke
100%
100% 0%
InvertedNormal