Torque Control - Siemens SINAMICS S120 Function Manual

Function diagram overview for droop function (see List Manual)
S 6030
Parameter overview for droop function (see List Manual)
S p1488[0...n]
S p1489[0...n]
S p1492[0...n]
S r1482
S r1490
S p1512
S p1513
3.2.7

Torque 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 supple-
mentary torque setpoint allows a pre-control torque to be applied for speed control.
Note
For safety reasons, assignments to fixed torque setpoints are currently not
possible.
When regenerative energy occurs that cannot be fed back into the supply, a
Braking Module with a connected braking resistor must be used.
© Siemens AG 2006 All Rights Reserved
SINAMICS S120 Function Manual, 03/2006 Edition
Speed setpoint, droop, acceleration model
Droop input source
Droop feedback scaling
BI: Droop feedback enable
CO: Speed controller I torque output
CO: Droop feedback speed reduction
CI: Supplementary torque 1 scaling
CI: Supplementary torque 2
Operating Modes
Vector control
3-137