Def / Type
FbEq 16b / 32b
Description
Name / Range /
Selection
No.
In1 / uint16
Defines how process feedback is calculated from the
two feedback sources selected by parameters
and
Set 1 feedback
function
40.10
0
Source 1.
In1
1
Sum of sources 1 and 2.
In1+In2
2
Source 2 subtracted from source 1.
In1-In2
3
Source 1 multiplied by source 2.
In1*In2
4
Source 1 divided by source 2.
In1/In2
5
Smaller of the two sources.
MIN(In1,In2)
6
Greater of the two sources.
MAX(In1,In2)
7
Average of the two sources.
AVE(In1,In2)
8
Square root of source 1.
sqrt(In1)
9
Square root of (source 1 - source 2).
sqrt(In1-In2)
10
Square root of (source 1 + source 2).
sqrt(In1+In2)
11
Square root of source 1 + square root of source 2.
sqrt(In1)+sqrt(In2)
0.000 s / real32
Defines the filter time constant for process feedback.
Set 1 feedback filter
time
40.11
1 = 1 s / 1000 = 1 s
Feedback filter time.
0.000 ... 30.000 s
% / uint16
Defines the unit for parameters
…
…
and
.
Set 1 unit selection
40.12
7
rpm.
rpm
4
%.
%
3
Hz.
Hz
250
User-definable unit 1. The name of the unit can be
edited on the control panel by choosing Menu – Settings
– Edit texts.
PID user unit 1
100.00 / real32
Defines, together with parameter
, a general scaling factor for the process PID
control chain.
The scaling can be utilized when, for example, the
process setpoint is input in Hz, and the output of the
PID controller is used as an rpm value in speed control.
In this case, this parameter might be set to 50, and
parameter
to the nominal motor speed at 50 Hz.
In effect, the output of the PID controller = [
] when
deviation (setpoint - feedback) = [
] and [
] =
1.
Note: The scaling is based on the ratio between
and
. For example, the values 50 and 1500 would
produce the same scaling as 1 and 30.
Set 1 setpoint
scaling
40.14
1 = 1 / 100 = 1
Process setpoint base.
-32768.00 ...
32767.00
422 Parameters
Содержание ACS880 Series
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