Siemens SIPART PS2 6DR50xx Manual page 104

Electropneumatic positioner for linear and part-turn actuators
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Operation
YNRM = MPOS or YNRM = FLOW
Presetting:
YA = 0% and YE = 100%
Example:
YNRM = MPOS with YA = 10 % and YE = 80 %
Example:
YNRM = FLOW with YA = 10 % and YE = 80 %
Figure 4-10
Dependence on the stroke of standardization and on YA and YE in the example of an 80 mm
linear actuator
38.YDIR
39.YCLS
104
4mA
7.2mA
10.4mA
0%
20%
40%
0mm
16mm
32mm
YA = 0%
4mA
7.2mA
10.4mA
0%
20%
40%
0mm
16mm
32mm
YA = 10%
4mA
7.2mA
10.4mA
0%
20%
40%
0mm
16mm
32mm
YA = 10%
Manipulated variable direction of action
The direction of action (rising or falling) of the display and the position
feedback (Iy) can be set with this.
Tight closing with manipulated variable (see figure 4-9, page 102)
With this function the valve can be driven to the seat with the maximum
actuating force of the actuator (continuous contact of the piezo-valves).
The tight closing function can be activated on one side or for both limit
positions. YCLS becomes active when the setpoint is below the value
set with parameter "YCDO" or above that set with parameter "YCUP".
50%
13.6mA
16.8mA
60%
80%
48mm
64mm
50%
13.6mA
16.8mA
60%
80%
48mm
64mm
YE = 80%
50%
13.6mA
16.8mA
60%
80%
100%
48mm
64mm
YE = 80%
Input current
(setpoint)
20mA
X display
W display
100%
Mechan. Stroke
(actual value)
80mm
YE = 100%
Input current
(setpoint)
20mA
X display
W display
100%
Mechan. Stroke
(actual value)
80mm
Input current
(setpoint)
20mA
X display
W display
Mechan. Stroke
(actual value)
80mm
SIPART PS2 Manual
A5E00074631--06

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