Rockwell Automation 2094-EN02D-M01-S1 Kinetix 6200 and Kinetix 6500 Safe Speed Monitoring Safety Reference Manual - Manual (Page 43)

Rockwell Automation Publication 2094-RM001C-EN-P - May 2013 43
General Device and Feedback Monitoring Configuration Chapter 5
Overspeed Response Time The [Overspeed Response Time] parameter setting determines the maximum
reaction time from an overspeed event to the initiation of the configured [Stop
Category]. The safety reaction time from an overspeed event that triggers a Stop
Category, to the actual initiation of that Stop Category, is equal to the value of
the [Overspeed Response Time] parameter. The configurable options are 42, 48,
60, 84, 132, 228, and 420 ms.
The [Overspeed Response Time] parameter setting also determines the speed
resolution that can be achieved. The Overspeed Response Time and the encoder
resolution affect the speed resolution accuracy as shown in the tables on the
following pages.
Speed Resolution Accuracy for Rotary Systems
Table 5 - Encoder Resolution 16 lines/rev
Table 6 - Encoder Resolution 128 lines/rev
Overspeed Response Time
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
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