Lenze i55AE155F User Manual

8.2.3 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 control (SLVC) is only suitable for asynchronous motors.
•
The operaon of the sensorless vector control (SLVC) is only permied for a single drive,
i. e., only one motor may be connected to the inverter.
•
Operaon of the sensorless vector control (SLVC) is not permissible for hoists!
Supported operang modes 0x6060 (P301.00):
•
"MS: Velocity mode [-2]"
•
"MS: Torque mode [-1]"
•
"CiA: Velocity mode [2]"
Details
This motor control type is acvated by seng 0x2C00 (P300.00) = "Sensorless vector control
(SLVC) [4]".
Compared to the V/f characteriscs, the sensorless vector control (SLVC) serves to achieve
improved drive characteriscs thanks to:
•
higher torque throughout the enre speed range
•
higher speed accuracy and higher concentricity factor
•
higher eciency
Speed
Torque
Rated speed
Rated torque
①
Sensorless vector control (SLVC)
②
V/f characterisc control (VFC) ^ 166
For a speed control with torque limitaon in operang mode 0x6060 (P301.00) = "MS: Veloc-
ity mode [-2]":
1.
Select the source in 0x2949:001 (P337.01) for the posive torque limit source and set it
accordingly.
2.
Select the source in 0x2949:002 (P337.02) for the negave torque limit source and set it
accordingly.
Alternavely, the inverter can be congured in this motor control type in such a way that it
controls a motor torque within a dened frequency range. For details, see chapter "Torque
control w/ freq. limit". ^ 206
Parameter Name / value range / [default seng] Info
0x2B40:003 Q-Feedforward
0.00 ... [0.00] ... 10000.00
•
From version 03.00
Feedforward control for the SLVC Q controller.
0x2B40:004 D-Feedforward
0.00 ... [0.00] ... 10000.00
•
From version 03.00
Feedforward control of the SLVC-D controller.
Motor control
Motor control selecon
Sensorless vector control (SLVC)
173

Lenze i55AE155F Specifications

General

Brand	Lenze
Model	i55AE155F
Category	Inverter
Language	English