Torque precontrol
- Menu: 4.2.11-1.6
Description
Setpoint of torque precontrol.
In the drive functions FCB 06 Interpolated speed control and FCB 10 Interpolated position control, you can specify that the mass moment of inertia and a torque precontrol for the mass moment of inertia change are specified for the inverter via process data (e.g. depending on the motor angle).
If the precontrol value is known directly with the setpoint and does not have to be calculated from previous values, faster compensation can be achieved. The precontrol value must match exactly the setpoint change and be transferred with the same process data cycle as the setpoint.
This setting can be used if the track is subject to a position-dependent load torque (e.g. toggle mechanism) but the controller still has to be set stiffly.
The following parameters are set:
Parameter | Meaning |
|---|---|
Specifies from which source the setpoint is retrieved. | |
PO data format | Length of the process output data word |
Value | Current torque precontrol value that is used in the following drive functions:
If the Local value setting has been specified for the Source parameter, the user can specify the value locally. The locally specified setpoint can be useful, for example, in the startup phase to specifically specify setpoints for the inverter without a higher-level controller that has already been started up. The local value is stored in a non-volatile memory. |
