Siemens SINAMICS S120 Function Manual page 195

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These cyclic values therefore limit the torque setpoint at the speed controller output / torque

input or indicate the instantaneous maximum possible torque. If the torque setpoint is limited

in the motor module, this is indicated via the following diagnostic parameters:

● r1407.8 Upper torque limit active

● r1407.9 Lower torque limit active

Function diagrams (see SINAMICS S120/S150 List Manual)

Drive functions

Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3

Vector control - Torque setpoint

Vector control - Upper/lower torque limit

Vector control - Current/power/torque limits

Vector control

4.9 Torque limiting

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