Operating Instructions ACTIVE 06/07174
174 Operating Instructions ACTIVE 06/07
16.5.2 Torque Controller
The torque-controlled configurations 230 and 430 often demand limitation of the
speed in the operating points without load moment. The controller increases the
speed in order to reach the reference torque until the
Frequency Upper Limit 767 or
the
Frequency Lower Limit 768 is reached. As from the limit value the drive is con-
trolled to maximum speed, which corresponds to the behavior of the speed controller.
Thus, the controller is limited to the
Maximum Frequency 419.
Parameter Settings
No. Description Min. Max. Fact. sett.
767 Frequency Upper Limit -999.99 Hz 999.99 Hz 999.99 Hz
768 Frequency Lower Limit -999.99 Hz 999.99 Hz 999.99 Hz
16.5.2.1 Limit Value Sources
The limitation of the frequency can be done by setting fixed values and also by linking
to an analog input parameter. The analog value is limited via parameters
Minimum
Reference Percentage
518 and Maximum Reference Percentage 519, but does not
consider the
Gradient Percentage Ramp 477 of the reference percentage value chan-
nel.
The assignment is done for the torque controller via parameters
Frequency Upper
Limit Source
769 and Frequency Lower Limit Source 770.
Operation mode 769, 770 Function
101 - Analog Input MFI1A
The source is the multifunctional input 1 in an
analog
Operation Mode 452.
110 - Fixed Limit
The selected parameter values are taken into
account to limit the speed controller.
201 - Inv. Analog Input MFI1A Operation mode 101, inverted.
210 - Inv. Fixed Limit Operation mode 110, inverted.
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