Lenze i510 - Linear V;F Characteristic; Square-Law V;F Characteristic; Sensorless Vector Control (SLVC)

Parameter Name / value range / [default seng] Info
0x2540:001
(PAR 208/001)
Mains voltage
: Rated mains voltage
(Mains volt. se.: AC input volt.)
•
Seng can only be changed if controller inhibit is
acve.
Selecon of the mains voltage for actuang the inverter.
0 230 Ve
1 400 Ve
2 480 Ve
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 characterisc
In the 0x2B00 (PAR 302)
= "Linear characterisc [0]" default seng, the motor voltage of the
inverter is determined on the basis of a linear characterisc depending on the eld frequency
or motor speed to be generated. The voltage follows a preselected characterisc.
7.2.1.2 Square-law V/f characterisc
In the case of the seng 0x2B00 (PAR 302) = "Square-law characterisc [1]", the motor volt-
age of the inverter is determined on the basis of a square-law characterisc depending on the
eld frequency or motor speed to be generated. The voltage follows a preselected characteris-
c.
7.2.2 Sensorless vector control (SLVC)
Sensorless (eld-oriented) vector control for asynchronous motors is based on a decoupled,
separate control for the torque-producing and the eld-producing current component. In
addion, the actual speed is reconstructed by means of a motor model so that a speed sensor
is not required.
Precondions
•
Sensorless vector contr
ol (SLVC) is only suitable for asynchronous motors.
•
Operaon of the sensorless vector control (SLVC) is only permissible for one single drive!
•
Operaon of the sensorless vector control (SLVC) is not permissible for hoists!
•
The Lenze seng enables the
actuaon of a power-adapted motor. Opmum operaon
requires an idencaon of the inverter characterisc and the motor parameters. 4Motor
data ^ 78
Details
This motor control type is acvated by seng 0x2C00 (PAR 300) = " Sensorless vector control
(SLVC) [4]".
In comparison to the V/f characterisc control without feedback, the following can be ach-
ieved by means of sensorless vector control SLVC:
•
A higher maximum torque throughout the enre speed range
•
A higher speed accuracy
•
A higher concentricity factor
•
A higher level of eciency
•
The implementaon of torque-actuated operaon with speed limitaon
•
The limitaon of the maximum torque in motor and generator mode for speed-actuated
operaon
Parameter Name / value range / [default seng] Info
0x29C0:001 Field controller sengs: Gain
0.00 ... [59.68]* ... 50000.00 A/Vs
•
Default seng depending on the siz
e.
Gain factor Vp of the eld controller.
Motor control
Motor control selecon
Sensorless v
ector control (SLVC)
82
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com