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KFU 2-/4-
150
14
Control Inputs and Outputs
The modular structure of the frequency inverters enables a wide spectrum of appli-
cations on the basis of the available hardware and software functionality. The control
inputs and outputs of terminals X210A and X210B described in the following can be
linked to software modules freely via the described parameters.
14.1 Multi-Function
Input
MFI1
Multifunction input MFI1 can either be configured as a voltage, current or a digital
input. Depending on the selected
Operation mode
452
for the multifunction input, a
link to various functions of the software is possible. The unused operation modes are
assigned the signal value 0 (LOW).
Operation mode
452
Function
1 - Voltage Input
voltage signal (MFI1A), 0 V ... 10 V
2 - Current Input
current signal (MFI1A), 0 mA ... 20 mA
3 - Digital Input
digital signal (MFI1D), 0 V ... 24 V
Note:
The sampling rate of multi-function input MFI1D is slower than that of digital
signals S1IND/STOA, S2IND, etc. For this reason, this input should only be
used for signals which are not time-critical.
14.1.1 Analog input MFI1A
Multifunction input MFI1 is configured by default for an analog reference value source
with a voltage signal of 0 V to 10 V.
Alternatively, you can select the operation mode for an analog current signal of 0 mA
to 20 mA. The current signal is continuously monitored and the fault message
"F1407" displayed if the maximum figure is exceeded.
14.1.1.1 Characteristic
Mapping of the analog input signal onto a reference frequency value or a reference
percentage value is possible for various requirements. Parameterization can be done
via two points of the linear characteristic of the reference value channel.
Point 1 with coordinates X1 and Y1 and point 2 with coordinates X2 and Y2 can be
set in four data sets.
Parameter
Settings
No.
Description
Min.
Max.
Fact. sett.
454 Point X1
0.00 %
100.00 %
2.00 %
455 Point Y1
-100.00 %
100.00 %
0.00 %
456 Point X2
0.00 %
100.00 %
98.00 %
457 Point Y2
-100.00 %
100.00 %
100.00 %
The coordinates of the points relate, as a percentage, to the analog signal with 10 V
or 20 mA and parameter
Maximum Frequency
419
or parameter
Maximum percent-
age reference
519
. The direction of rotation can be changed via the digital inputs
and/or by selection of the points.
Attention!
The monitoring of the analog input signal via the parameter
Er-
ror/Warning behavior
453
demands the examination of the parameter
Characteristic point X1
454
.