
Parameters 237
In1+In2
Sum of sources 1 and 2.
1
In1-In2
Source 2 subtracted from source 1.
2
In1*In2
Source 1 multiplied by source 2.
3
In1/In2
Source 1 divided by source 2.
4
MIN(In1,In2)
Smaller of the two sources.
5
MAX(In1,In2)
Greater of the two sources.
6
AVE(In1,In2)
Average of the two sources.
7
sqrt(In1)
Square root of source 1.
8
sqrt(In1-In2)
Square root of (source 1 - source 2).
9
sqrt(In1+In2)
Square root of (source 1 + source 2).
10
sqrt(In1)+sqrt(In2)
Square root of source 1 + square root of source 2.
11
Defines the filter time constant for process feedback.
0.000 s
0.000…30.000 s
Feedback filter time.
1 = 1 s
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.
0.00
32768.00…32767.00
Process setpoint base.
1 = 1
See parameter
.
1500.00;
1800.00
(
b0)
32768.00…32767.00
Process PID controller output base.
1 = 1
Selects the primary source of process PID setpoint. See
the control chain diagram on page
.
Not selected
None.
0
Internal setpoint
Internal setpoint. See parameter
.
2
AI1 scaled
3
AI2 scaled
4
Motor potentiometer
(output of the motor
potentiometer).
8
Freq in scaled
10
AI1 percent
No.
Name/Value
Description
Default
FbEq 16
Operation mode
(see par.
19.01
)
Scaling
Speed control
Frequency control
ACS180 FW.book Page 237 Tuesday, March 9, 2021 2:25 PM