Torque Control - Siemens Sinamics S120 Function Manual

● r2169 CO: Actual speed value smoothed messages
● r2199.7 Speed deviation of model / external in tolerance
● p3236 Speed threshold value 7
● p3237 Hysteresis speed 7
● p3238 Switch-off delay n_act_motor model= n_act_external
4.8

Torque control

With sensorless speed control SLVC (p1300 = 20) or speed control with sensor VC (p1300 =
21), a changeover can be made to torque control (slave drive) via BICO parameter p1501. A
changeover 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.
p1503[C]
p1501
p1511[C]
p1512[C]
p1513[C]
Figure 4-14
Drive functions
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
-
T
i
(0)
r1406.12
(0)
(0)
(0)
Closed-loop speed/torque control
r1547[0]
0
1
r1547[1]
r1407.2
r1515
Vector control
4.8 Torque control
r1538
r0079
r1539
163