Operating instructions

Setpoint channel and closed-loop control
7.4 Vector speed/torque control with/without encoder
Drive converter cabinet units
286 Operating Instructions, 10/2008, A5E00288214A
Function diagram
FP 6030 Speed setpoint, droop
Parameter
• r0079
Total speed setpoint
• r1482
Speed controller I torque output
• p1488
Droop input source
• p1489
Droop feedback scaling
• r1490
Droop feedback speed reduction
• p1492
Droop feedback enable
• r1508
Torque setpoint before supplementary torque
7.4.4 Closed-loop torque control
Description
For sensorless closed-loop speed control (p1300 = 20) or closed-loop speed control with
encoder VC (p1300 = 21), it is possible to change over to closed-loop torque control using
BICO parameter p1501. It is not possible to change over between closed-loop speed and
torque control if closed-loop torque control is directly selected 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 acts both for closed-loop torque as well as for the closed-loop speed control. As a
result of this characteristic, a pre-control torque can be implemented for the closed-loop
speed control using the supplementary torque setpoint.
Note
For safety reasons, assignments to fixed torque setpoints are currently not possible.
If energy is regenerated and cannot be injected back into the line supply, then a Braking
Module with connected braking resistor must be used.