Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX User Manual
Page 192

10-22
Using the Function Block
As an example of the scale function block, you could ensure that the
speed reference is kept to within a 10% range. To do this, you need to
enter the values shown in Figure 10.26.
Figure 10.26
Example of the Scale Function Block
Converting Between Drive Units and RPM
This section is provided to help you convert between drive units and
rpm. The formula for the conversion is:
200
Func 1 Eval Sel
0
198
Function In1
199
Func 1 Mask/Val
Enter: 10
Enter: 0 This value is not used.
Scale Function Block
203
Func 2 Eval Sel
0
201
Function In2
202
Func 2 Mask/Val
10
Enter: 0 This value is not used.
212
Function Sel
13
10
4096
213
Function Output 1
206
Func 3 Eval Sel
0
204
Function In3
205
Func 3 Mask/Val
5
Enter: 0 This value is not used.
0
207
Function In4
In4
214
Function Output 2
209
Function In6
210
Function In7
In6
In7
208
Function In5
In5
In1
10
In2
In4, In5
10
100, 0
In3
In6, In7
5
1, 0
Input
Range
Output
Range
Enter: 100
Enter: 1
Enter: 0
Enter: 0
Enter 0 for parameter 211 as
this parameter is not used.
Speed Ref 1
65536
×
Speed Ref 1 Frac
+
(
)
Base motor speed
4096
65536
Ч
(
)
⁄
(
)
Ч
y rpm
=
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