Siemens Sinamics S120 Function Manual page 168

Vector control
4.9 Torque limiting
● p1524[0...n] CO: Torque limit, upper/motoring, scaling
● p1525[0...n] CO: Torque limit, lower/regenerative scaling
● p1530[0...n] Motor mode power limit
● p1531[0...n] Regenerative mode power limit
The current active torque limit values are displayed in the following parameters:
● r0067 Maximum drive output current
● r1526 Torque limit, upper/motoring without offset
● r1527 Torque limit, lower/regenerative without offset
All of the following limits apply to the torque setpoint, which is present either at the speed
controller output in the case of speed control, or at the torque input in the case of torque
control. The minimum/maximum value of the different limits is used in each case. The
minimum value is calculated cyclically and displayed in parameters r1538 and r1539.
● r1538 CO: Upper effective torque limit
● r1539 CO: Lower effective torque limit
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)
● 6060 Torque setpoint
● 6630 Upper/lower torque limit
● 6640 Current/power/torque limits
166
indicated.
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Drive functions