KEB COMBIVERT F6

Protection functions
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© 2022 KEB Automation KG
The continuous current (ID) is speed-dependent:
Id:
Id0:
In
Nn
continuous current
standstill current (dr34 * dr03)
rated current (rated current / dr03)
rated speed (rated speed / dr04)
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Figure 13: Dependence of the motor protection function
The tripping time (ta) is determined by the ratio Is/Id:
Ta:
Is/Id:
T2:
T1:
Min:
Max:
tripping time
apparent current/ continuous current [%]
dr35 (SM prot time min Is/Id)
dr36 (SM prot time Imax)
dr38 (SM prot min Is/Id)
dr12 (max current %)
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Figure 14: Dependence of the tripping time