"Current-dependent setpoint correction" function
The setpoint correction makes it possible to adapt the voltage setpoint in the FCB 55 "Voltage control" depending on the present current. The higher the current in the positive direction, the more the voltage setpoint is corrected downwards.
The corrected setpoint adheres to the valid application limits and profile values:
- P8812.40 "Current-dependent setpoint correction factor A-side"
- or
- P8812.74 "Current-dependent setpoint correction factor B-side"
The parameters specify the value with which the voltage setpoint is corrected at the maximum current. If the current is less than the maximum current, linear interpolation takes place.
- P8812.42 "Maximum current-dependent setpoint correction A-side (value)"
- or
- P8812.76 "Maximum current-dependent setpoint correction B-side (value)"
The parameters specify the maximum amount by which the setpoints are corrected.
The parameter for the side which is currently being controlled is always used:
- P8812.44 "Filter time constant current-dependent setpoint correction"
The correction value is filtered with the filter time constant in order to suppress instabilities.
