SEW-Eurodrive MOVISAFE DCS21B

144
Manual – MOVIDRIVE® MDX61B Safety Module Option MOVISAFE® DCS..B
12
Typical response times
Appendix
12.6.3 Calculating the response time of DCS..B with overspeed distance monitoring
If the "overspeed distance monitoring" function (MSC) is used for speed monitoring, the
total response time of the DCS..B option will increase. Two cases are distinguished.
1. Faulty acceleration beyond the monitored velocity.
4033391243
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A = Alarm is triggered
v
0
= Monitored velocity (MSC)
t
R
= Response time of the DCS..B option
s
F
= Permitted distance for overspeed distance monitoring
a = Acceleration of the drive
t
DCS
= Cycle time of the DCS..B option
t
s
a
t
R
F
DCS
=
×
+×
2
2