Parameter
Name / value range / [default setting]
Info
0x2540:001
(PAR 208/001)
Mains voltage: Rated mains voltage
(Mains volt. sett.: AC input volt.)
•
Setting can only be changed if controller inhibit is
active.
Selection of the mains voltage for actuating the inverter.
0 230 Veff
1 400 Veff
2 480 Veff
0x2915
(PAR 210)
Minimum frequency
(Min. frequency)
0.0 ... [0.0] ... 599.0 Hz
Lower limit value for all frequency setpoints.
0x2916
(PAR 211)
Maximum frequency
(Max. frequency)
0.0 ... [50.0] ... 599.0 Hz
Upper limit value for all frequency setpoints.
7.2.1.1
Linear V/f characteristic
In the
0x2B00 (PAR 302)
= "Linear characteristic [0]" default setting, the motor voltage of the
inverter is determined on the basis of a linear characteristic depending on the field frequency
or motor speed to be generated. The voltage follows a preselected characteristic.
7.2.1.2
Square-law V/f characteristic
In the case of the setting
0x2B00 (PAR 302)
= "Square-law characteristic [1]", the motor volt-
age of the inverter is determined on the basis of a square-law characteristic depending on the
field frequency or motor speed to be generated. The voltage follows a preselected characteris-
tic.
7.2.2
Sensorless vector control (SLVC)
Sensorless (field-oriented) vector control for asynchronous motors is based on a decoupled,
separate control for the torque-producing and the field-producing current component. In
addition, the actual speed is reconstructed by means of a motor model so that a speed sensor
is not required.
Preconditions
•
Sensorless vector control (SLVC) is only suitable for asynchronous motors.
•
Operation of the sensorless vector control (SLVC) is only permissible for one single drive!
•
Operation of the sensorless vector control (SLVC) is not permissible for hoists!
•
The Lenze setting enables the actuation of a power-adapted motor. Optimum operation
requires an identification of the inverter characteristic and the motor parameters.
4
Motor
data
^
78
Details
This motor control type is activated by setting
0x2C00 (PAR 300)
= " Sensorless vector control
(SLVC) [4]".
In comparison to the V/f characteristic control without feedback, the following can be ach-
ieved by means of sensorless vector control SLVC:
•
A higher maximum torque throughout the entire speed range
•
A higher speed accuracy
•
A higher concentricity factor
•
A higher level of efficiency
•
The implementation of torque-actuated operation with speed limitation
•
The limitation of the maximum torque in motor and generator mode for speed-actuated
operation
Parameter
Name / value range / [default setting]
Info
0x29C0:001
Field controller settings: Gain
0.00 ... [59.68]* ... 50000.00 A/Vs
•
Default setting depending on the size.
Gain factor Vp of the field controller.
Motor control
Motor control selection
Sensorless vector control (SLVC)
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