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Functions
3.6 Motor protection
M200D PROFIBUS/PROFINET
44
Manual, 08/2014, A5E01577426A/RS-AA/004
Idle time
The idle time is a time specification for the cooling characteristics after operational tripping,
that is, not in the case of overload tripping.
After expiry of this time, the thermal memory of the motor starter is deleted. Cold restart is
possible.
With appropriately adapted dimensioning of the drive, higher switching frequencies are thus
possible without exceeding the trip limit of the motor model.
Note
Higher switching frequencies result in higher motor heating. If the motor dimensioning has
not been adapted (thermal class), motor protection is no longer guaranteed.
The following schematic shows the cooling characteristics with and without idle time.
Figure 3-5
Cooling characteristics with and without idle time
Note
Motor heating
•
Motor heating > 50 %: After idle time, the save value of the motor model is reduced to 50%.
•
Motor heating < 50 %: After idle time, the save value of the motor model is reduced to 0 %.
Содержание SIRIUS M200D
Страница 2: ......
Страница 16: ...Product description 1 3 PROFIenergy M200D PROFIBUS PROFINET 16 Manual 08 2014 A5E01577426A RS AA 004 ...
Страница 24: ...Product family 2 3 Design concept M200D PROFIBUS PROFINET 24 Manual 08 2014 A5E01577426A RS AA 004 ...
Страница 90: ...Functions 3 22 Logbook M200D PROFIBUS PROFINET 90 Manual 08 2014 A5E01577426A RS AA 004 ...
Страница 118: ...Mounting connection 4 2 Connection M200D PROFIBUS PROFINET 118 Manual 08 2014 A5E01577426A RS AA 004 ...
Страница 222: ...Appendix A 2 Order numbers M200D PROFIBUS PROFINET 222 Manual 08 2014 A5E01577426A RS AA 004 ...
Страница 224: ...Correction sheet M200D PROFIBUS PROFINET 224 Manual 08 2014 A5E01577426A RS AA 004 ...
Страница 232: ...Index M200D PROFIBUS PROFINET 232 Manual 08 2014 A5E01577426A RS AA 004 ...
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