Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX - Manual (Page 193)

Using the Function Block 10-23
As an example the following table shows several drive unit values
converted to rpm. A base speed of 1755 is used for this table.
The formula for converting from rpm to internal units is as follows:
The following table shows several values in rpm converted to drive
units. Again, a base speed of 1755 is used.
Using the Hysteresis Function The hysteresis function lets you select a value based on whether
Input 1 is greater than Input 4 or less than Input 5. If Input 1 is
between Input 4 and Input 5, then the value does not change.
Figure 10.27 shows the parameters that are used for the hysteresis
function and how these parameters are evaluated.
Speed Reference
RPM
Whole Fraction
32767 65535 14039.99999346
4096 0 1755.00000000
1 0 0.42846680
0 65535 0.42846026
0 32767 0.21422686
0 1 0.00000654
-4 32711 -1.50000645
-4096 0 -1755.00000000
RPM
Speed Reference
Whole Fraction
1755 4096 0
0.4284668 1 0
0.42846026 0 65535
0.9 2 6587
-1755 -4096 0
-1.5 -4 32711
2000 4667 52839
0.5 1 10941
y rpm
base motor speed 4096 65536 × ( ) ⁄ ( )
----------------------------------------------------------------------------------------
65536
---------------------------------------------------------------------------------------------- Whole, Fractional (remainder) =