July 2013 6.11 Monitoring functions 909
Fundamentals The following graphics illustrate these parameters in relation to the reference
voltage.
With the CC 6xxx it is possible to use an interpolated current range for the
transition from standstill to traverse. This allows an exact calculation of the
temperature model.
If there is no stall torque value given in the motor table, the following model
of current (with respect to the rated current) is used to calculate the
temperature in the motor. The factors for MP 2302.x and MP 2304.x are not
yet taken into account.
Rated current
I-N
n
Rated rotational
speed N-N
Reference value for I
2
T monitoring
F-AC
F-DC
I-N * 0.707
Limit frequency through interpolation for the
CC 6xxx
n
Reference value for I
2
T monitoring
Rated current
I-N
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