Firmware
≤
11.00 - DMS 8.0 EN - 10/2011
L
119
8400 StateLine C | Reference manual
Motor control (MCTRL)
Selecting the control mode
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.
In comparison to the V/f characteristic control without feedback, the following can be
achieved 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
Tip!
If a high torque without feedback is to be provided at small speeds, we recommend
the "Sensorless vector control" motor control mode.
Sensorless vector control (SLVC)
(
160)
Sensorless control for synchronous motors (SLPSM)
From version 10.00.00
This sensorless control enables an encoderless control of synchronous motors. The process
is based on field-oriented control within a higher speed range (e.g. > 10 % of the rated
motor speed). The actual speed value and rotor position are reconstructed via a motor
model.
Standard applications for this control type are pumps and fans, horizontal materials
handling and simple positioning technology.
Sensorless control for synchronous motors (SLPSM)
(
174)
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
