Speed resolution accuracy for rotary systems – Rockwell Automation 21G PowerFlex 750-Series AC Drives Reference Manual User Manual
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Rockwell Automation Publication 750-RM001F-EN-P - February 2012
Chapter 5
General Device and Feedback Monitoring Configuration
Speed Resolution Accuracy for Rotary Systems
Table 5 - Encoder Resolution 16 lines/rev
Table 6 - Encoder Resolution 128 lines/rev
Table 7 - Encoder Resolution 1000 lines/rev
Overspeed Response Time, P24
(OverSpd Response) Setting
Speed (RPM)
1
10
100
1000
10,000
100,000
42
156.253
156.283
156.583
159.583
189.583
489.583
48
78.127
78.142
78.292
79.792
94.792
244.792
60
39.063
39.071
39.146
39.896
47.396
122.396
84
19.532
19.535
19.573
19.948
23.698
61.198
132
9.766
9.768
9.786
9.974
11.849
30.599
228
4.883
4.884
4.893
4.987
5.924
15.299
420
2.441
2.442
2.447
2.493
2.962
7.650
Overspeed Response Time, P24
(OverSpd Response) Setting
Speed (RPM)
1
10
100
1000
10,000
93,750
42
19.535
19.565
19.865
22.865
52.865
332.031
48
9.767
9.782
9.932
11.432
26.432
166.016
60
4.884
4.891
4.966
5.716
13.216
83.008
84
2.442
2.446
2.483
2.858
6.608
41.504
132
1.221
1.223
1.242
1.429
3.304
20.752
228
0.610
0.611
0.621
0.715
1.652
10.376
420
0.305
0.306
0.310
0.357
0.826
5.188
Overspeed Response Time, P24
(OverSpd Response) Setting
Speed (RPM)
1
10
100
1000
10,000
12,000
42
2.503
2.533
2.833
5.833
35.833
42.500
48
1.252
1.267
1.417
2.917
17.917
21.250
60
0.626
0.633
0.708
1.458
8.958
10.625
84
0.313
0.317
0.354
0.729
4.479
5.313
132
0.156
0.158
0.177
0.365
2.240
2.656
228
0.078
0.079
0.089
0.182
1.120
1.328
420
0.039
0.040
0.044
0.091
0.560
0.664