Process Unit 73 LF - Knick

ÍÍÍÍÍÍÍÍÍÍÍÍ
ÍÍÍÍÍÍÍÍÍÍÍÍ
ÍÍÍÍÍÍÍÍÍÍÍÍ
ÍÍÍÍÍÍÍÍÍÍÍÍ
Enter end of control, corner X, corner Y and reset
time for the right control range (: Controlled variable
> setpoint).
20 mA
Output
2
0(4) mA
Controller output Y [%]
100
Active
50
0
control range
Type B: Straightway valve (< setpoint)
For the straightway valve Type B, the analog controller
output operates in the manipulated variable
range 0 to +100 %. Here, +100 % corresponds to
a current of 20 mA. The controller only outputs the
manipulated variable for the selected side. On the
other side of the setpoint, the manipulated variable
cannot be output and the output remains at
0 (4) mA.
–50
–100
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Controlled variable X W [mS/cm]
ÍÍÍÍÍÍÍÍÍÍÍÍ
ÍÍÍÍÍÍÍÍÍÍÍÍ
The parameters of the controlled variable which
controls the controller are set with and .
Press and to choose between the control
parameters. Enter each of the control parameters
with the scrolling and cursor keys (see Pg. 2–5)
and confirm the entries with .
Enter beginning of control, corner X, corner Y and
reset time for the left control range (: Controlled
variable < setpoint).
For a pure P-controller (reset time = 0 s), only the
parameters for the control range used must be
set. However, for the unused range, realistic
parameters must be entered, as otherwise the error
message “Warn Control Parameter” is output.
For use as a PI-controller (reset time 0 s), it is
mandatory that the parameters for the unused
range are also set. The manipulated variable of
both control ranges is influenced by the integration
time.
Capabilities 9–39