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Functions
7.6 Motor control
Inverter with CU240B-2 and CU240E-2 Control Units
174
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA
Optimizing vector control
● Carry out the automatic speed controller optimization using (P1960 = 1)
Table 7- 15 The most important vector control parameters
Parameter Description
P1300 = 20 Control type: Vector control without speed encoder
P0300 …
P0360
Motor data are transferred from the motor rating plate during the quick commissioning
and calculated with the motor data identification
P1442 …
P1496
Speed controller parameters
P1511
Additional torque
P1520
Upper torque limit
P1521
Lower torque limit
P1530
Motoring power limit
P1531
Regenerative power limit
Additional information about this function is provided in the parameter list and in function
diagrams 6030 onwards in the List Manual.
You will find more information On the Internet:
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.
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
Commissioning the torque control
The torque control only functions error-free if, during the basic commissioning, you correctly
parameterized the motor data and performed the motor data identification with the motor in
the cold state.
You can find the basic commissioning in the following sections:
● Commissioning with the BOP-2 (Page 68)
● Commissioning with STARTER (Page 73)