Siemens SINAMICS G110M - Torque Control

Functions
8.6 Motor control
SINAMICS G110M Operating Instructions
Operating Instructions, 04/2015, FW V4.7.3, A5E31298649B AD
199
Parameter
Explanation
p5312
Moment of inertia precontrol linear positive
(factory
setting: 0 1/s
2
)
In a positive direction of rota-
tion:
Moment of inertia = p5312 ×
load torque + p5313
p5313
Moment of inertia precontrol constant positive
(fac-
tory setting: 0 kgm
2
)
p5314
Moment of inertia precontrol linear negative
(factory
setting: 0 1/s
2
)
In a negative direction of rota-
tion:
Moment of inertia = p5314 ×
load torque + p5315
p5315
Moment of inertia precontrol constant negative
(factory setting: 0 kgm
2
)
8.6.3
Torque control
Torque control is part of the vector control and normally receives its setpoint from the speed
controller output. By deactivating the speed controller and directly entering the torque
setpoint, the closed-loop speed control becomes closed-loop torque control. The inverter
then no longer controls the motor speed, but the torque that the motor generates.
Figure 8-25 Simplified function diagram of the closed-loop torque control
Typical applications for torque control
The torque control is used in applications where the motor speed is specified by the
connected driven load. Examples of such applications include:
● Load distribution between master and slave drives:
The master drive is speed controlled, the slave drive is torque controlled.
● Winding machines