Efficient Networks S120 manual Vector control 4.7 Torque control

Vector control 4.7 Torque control

Overview of key parameters (see SINAMICS S List Manual)

●p1488[0...n] Droop input source

●p1489[0...n] Droop feedback scaling

●p1492[0...n] BI: Droop feedback enable

●r1482 CO: Speed controller I torque output

●r1490 CO: Droop feedback speed reduction

4.7Torque control

With sensorless speed control SLVC (p1300 = 20) or speed control with sensor VC (p1300 = 21), a switchover can be made to torque control (slave drive) via BICO parameter p1501. A switchover cannot be made between speed and torque control if torque control is selected directly with p1300 = 22 or 23. The torque setpoint and/or supplementary setpoint can be entered using BICO parameter p1503 (CI: torque setpoint) or p1511 (CI: supplementary torque setpoint). The supplementary torque is active both with torque and speed control. This particular feature with the supplementary torque setpoint allows a pre-control torque to be applied for speed control.

Note

For safety reasons, connecting to fixed torque setpoints is currently not possible.

Regenerative energy may accumulate, and this must be either fed back into the supply system or converted into heat using a braking resistor.

Drive Functions	129
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4