Siemens SIPART PS2 PA 6DR55 Series, Руководство по эксплуатации

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Parameter assignment/Addressing
10.2 Description of parameters
SIPART PS2 with PROFIBUS communication
148
Operating Instructions, 09/2007, A5E00127926-07
10.2.2.7 Description of parameter 34
34.YNRM - standardization of manipulated variable
Use the "YA" and "YE" parameters to restrict the manipulated variable. This restriction
results in two different scales, MPOS and FLOW, for the digital display and the position
feedback through the current output. See the following picture for this purpose.
The MPOS scale shows the mechanical positions from 0 to 100% between the hard end
stops of the initialization. The position is not affected by the "YA" and "YE" parameters. The
"YA" and "YE" parameters are displayed in the MPOS scale.
The FLOW scale is the standardization from 0 to 100% in the range between the "YA" and
"YE" parameters. The setpoint w from 0 to 100% is always referred to in this range. This
results in a display that is more or less proportional to the flow rate and a position feedback
"I
Y
". The flow rate-proportional display and position feedback "I
Y
" are also obtained when the
valve characteristic lines are used.
The setpoint in the digital display is also shown in the corresponding scale to calculate the
control difference.
The dependency of the stroke on standardization and on the "YA" and "YE" parameters is
shown below with an example of a 80 mm linear actuator:
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DFWXDOYDOXH
PP PP PPPPPPPP
<$ <(
;GLVSOD\
:GLVSOD\
0HFKDQVWURNH
DFWXDOYDOXH
PP PP PPPPPPPP
<$ <(
6HWSRLQW