Baumuller b maXX BM5800 - Page 683

Description of the Software Modules and Parameters
Parameter manual b maXX BM5800
Document No.: 5.16029.03
683
of 814
3
1)
These methods require valid motor data. The parameter >6.43< does not accept the entered value if there
is no valid motor data.
2)
Combinable with all motor l
2
t modes
6.46 Motor I
2
t derating factors
Includes the derating factors in the elements 6.46[0] and 6.46[1] in percent relating to the
rated current to interpolate the current limit curve for standard asynchronous machines
without forced ventilation. Thereby, the element in 6.46 [0] defines the maximum contin
-
uous current in the standstill operating point and 6.46 [1] defines the operating point at
the half rated speed.
By default, both derating factors have a value of 100% which accords to the speed-inde-
pendent standardized solution of the l
2
t monitoring (refer to ZTemperature monitoring of
the motor– from page 715). The minimum value corresponds to 10%.
Bit Meaning
2 ... 0 Value Speed dependent modes
0 Deactivated
1 Continuous current limit by means of supporting points and inter-
polation
1)
2 Continuous current limit by means of approximation of iron
losses
1)
3 Derating identification of machines having no separately ventila-
tion
1)
4 to 8 Reserved
3 Current monitoring type:
2)
0: Total current
1: Single phases
15 ....4 Reserved