January 2012 6.17 Monitoring Functions 967
Fundamentals The following graphics illustrate these parameters in relation to the reference
voltage. Remember here that the parameters of the CC 422 may differ from
those of the CC 61xx or CC 424.
With the CC 61xx and CC 424 it is possible to use an interpolated current
range for the transition from standstill to traverse. This allows a more exact
calculation of the temperature model.
For the CC 422, no difference is made between F-DC and F-AC. Instead, F-AC
is used as a rigid limit frequency for the transition between standstill and
traversing mode.
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_motFactorI2t and
MP_ampFactorI2t are not yet taken into account.
F-AC
F-DC
I rated
Direct transition with CC 422 (F-AC)
100
70.7
Threshold from interpolation with CC 61xx
n
Rated speed
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