Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX - Manual (Page 181)

Using the Function Block 10-11
As an example, you could set up the add/subtract function block to
provide fine and coarse adjustment to the speed reference as shown in
Figure 10.13.
Figure 10.13
Examples of Fine and Coarse Adjustments in Speed
For this example to work, link the analog input 1 parameters to
Function In1 (parameter 198) and the analog input 2 parameters to
Function In2 (parameter 201) as shown in Figure 10.14.
Coarse
Adjustment
(Provided at In1)
Speed
Time
Speed
Time
Speed
Time
Actual Motor
Speed
Fine
Adjustment
(Provided at In2)
0
0
0
Example 1
± Speed
± Speed
Speed
Time
Speed
Time
Speed
Time
0
0
0
Example 2
± Speed
± Speed