Analog Inputs 2-13
Square Root
[Anlg In Sqr Root]
For both analog inputs, the user can enable a square root function for an
analog input through the use of [Analog In Sq Root]. The function should
be set to enabled if the input signal varies with the square of the quantity
(i.e. drive speed) being monitored.
If the mode of the input is bipolar voltage (-10v to 10v), then the square root
function will return 0 for all negative voltages.
The square root function is scaled such that the input range is the same as
the output range. For example, if the input is set up as a unipolar voltage
input, then the input and output ranges of the square root function will be 0
to 10 volts, as shown in figure below.
Scaling Block
[Speed Reference A Sel] = “Analog In 1”
[Analog In 1 Lo]
0V
[Minimum Speed]
0 Hz
[Analog In 1 Hi]
5V
[Maximum Speed]
60Hz
1
2
3
4
5
6
601218
Output Hertz
Input Volts
24 30 36 42 48 54 60
Config 5
2
4
6
8
10
2046
Input (Volts)
Output (Volts)
810
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