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8 Additional information
BU 0700 EN
Subject to technical alterations
119
8.2.2 Process controller parameter settings
(Example: Setpoint frequency: 50Hz, control limits: +/- 25%)
P105 (maximum frequency) [Hz]
:
[ ]
[ ]
[ ]
⎟
⎠
⎞
⎜
⎝
⎛
×
+
≥
100%
%
P415
Hz
freq.
Setpoint
Hz
freq.
Setpoint
:
E.g.
=
×
+
≥
%
100
%
25
50
50
Hz
Hz
62.5 Hz
P400 (Funct. analog input)
:
“4”
(frequency addition)
P411 (setpoint frequency) [Hz]
: Set frequency with 10 V at analog input 1
:
E.g.
50 Hz
P412 (Process controller setpoint)
: CR middle position / Default setting 5 V (adapt if necessary)
P413 (P controller) [%]
: Factory setting
10%
(adapt if necessary)
P414 (I-controller) [% / ms]
: recommended
ms
%
10
.
0
P415 (limi/-) [%]
: Controller limitation (see above)
Note:
In the function process controller, parameter P415 is used as a controller
limiter downstream from the PI controller. This parameter therefore has a
double function.
Example 25% of setpoint
P416 (ramp before controller) [s]
: Factory setting 2s (if necessary, adjust to controller behaviour)
P420 (Funct. Switch digital input 1)
:
"1"
Enable right
P421 (Funct. Switch digital input 2)
:
"40"
actual value PID process controller (only with Basic I/O or Standard I/O)
Alternatively, the 2
nd
analog input (P405=14) of the multi I/O can be used.