Operating Instructions ACTIVE06/07 189
06/07 Operating Instructions ACTIVE 189
The error and warning messages can be read out by means of the digital outputs or
reported to an overriding control system. The
Trigger Limit Iactive 582 is to be pa-
rameterized as a percentage of the
Rated Current 371 for the application and the
possible operating points.
Parameter Settings
No. Description Min. Max. Fact. sett.
582 Trigger Limit Iactive 0.1% 100.0 % 10.0 %
583 Delay Time 0.1 s 600.0 s 10.0 s
17.7 Functions of Field-Orientated Control
The field-orientated control modes are based on a cascade control and the calculation
of a complex machine model. The various control functions can be supplemented by
special functions specific to the application.
17.7.1 Motor Chopper
The field-orientated control modes contain the function for adapted implementation of
the generator energy into heat in the connected three-phase machine. This enables
the realization of dynamic speed changes at minimum system costs. The torque and
speed behavior of the drive system is not influenced by the parameterized braking
behavior. The parameter
Trigger Threshold 507 of the DC link voltage defines the
switch-on threshold of the motor chopper function.
Parameter Settings
No. Description Min. Max. Fact. sett.
507 Trigger Threshold U
dmin
+25V 1000.0 U
dMC
The parameter
Trigger Threshold 507 is to be set in such a way that it is between
the maximum DC link voltage which the mains can generate and the maximum admis-
sible DC link voltage of the frequency inverter.
maxdMCMains
UdU21.1U <<⋅⋅
If the parameter
Trigger Threshold 507 is set larger than the maximum admissible
DC link voltage, the motor chopper cannot become active, the motor chopper is
switched off.
If the set Trigger Threshold 507 is smaller than the maximum DC link voltage the
mains can generate, error message F0706 (chapter "Error Messages") is displayed
when the frequency inverter is switched on.
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