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Aktor M
Technical description
3.2.7
Safety end position / resynchronisation
of the end position
Operating mode
Modulating control /
Automatic mode
On/off or floating
control / Automatic
mode
Manual mode (Open/
Closed) or priority
switch (Open/Closed)
The direction of the safety end position can be set via DIP
switch B6.
In addition, the safety end position is approached in case
of a detected wire breakage (see wire breakage detection).
In this case, the feedback via Yout is a signal of approx.
12.5 V or 0 mA, depending on the position of DIP switch
B2.
8
Behaviour
After a voltage reset, after the
end of manual mode (Stop) or
after the end of manual
adjustment via the magnetic
contact, the end position is
resynchronised by moving to
the safety end position.
After finishing the manual
adjustment via the magnetic
contact, the end position is
resynchronised by moving to
the current end position again.
After termination of the manual
adjustment via the magnetic
contact or after a voltage reset,
the end position is
resynchronised by moving to
the current end position again.
3.2.8 Dynamic Yin damping / Balancing
external disturbances
To prevent the actuator from oscillating when external
disturbances are coupled to the control line Y, the input
hysteresis band is automatically increased.
If the fault no longer occurs, the hysteresis is reset to
minimum values. This function largely prevents external
disturbances and avoids unnecessary temperature
fluctuations and wear on the actuator and valve.
3.2.9 Wire breakage detection
To use this function, the setting range must be set to
2..10 V or 4..20 mA (DIP switch B5).
With in input signal in modulating mode of < 2 V or 4 mA,
the actuator moves to the safety position.
In this case, the feedback via Yout takes place with a signal
of approx. 12.5 V or 0 mA.
3.2.10 Priorities in the execution of the input
signals
Prio.
Operating mode
1
Manual adjustment (via cover
or via DIP)
2
Init. (automatic or via DIP)
3
Priority switch (Open) = 0 V
(travel up)
4
Priority switch (Closed) = 0 V
(travel down)
5
Manual mode (Stop) M = open
(only after M = 0 V (wire
jumper))
6
Valve blocking protection
7
On/off / floating mode 2 =
24 V (travel up)
8
On/off / floating mode 3 =
24 V (travel down)
9
Modulating control (Yin)
Feedback
Fault message
12.5 V or
0 mA
Fault message
12.5 V or
0 mA
Position
0..100 %
Position
0..100 %
Fault message
12.5 V or
0 mA
Position
0..100 %
Position
0..100 %
Position
0..100 %
Position
0..100 %
115802384-V01.10.2022
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