Sensorless Vector Control (Slvc) - Siemens MICROMASTER 440 Operating Instructions Manual

Issue 10/06
6.4.17.1

Sensorless vector control (SLVC)

Control mode
P1300=20
20 Closed-loop Vector control – speed without encoder
SLVC can provide excellent performance for the following types of application:
•
Applications which require high torque performance
•
Applications which require fast respond to shock loading
•
Applications which require torque holding while passing through 0 Hz
• Applications which require very accurate speed holding
• Applications which require motor pull out protection
Filter time for act. freq (SLVC)
P1452 = ...
Sets time constant of PT1 filter to filter the frequency deviation of speed controller in
operation mode SLVC (sensorless vector control).
Decreasing the value leads to a higher dynamic of the speed regulation. Instability is seen
if the value is to low (or to high). p1452 = 2 can be set for most applications.
Gain speed controller (SLVC)
P1470 = ...
Enters gain of speed controller for sensorless vector control (SLVC).
Integral time n-ctrl. (SLVC)
P1472 = ...
Enters integral time of speed controller for sensorless vector control (SLVC).
p1492
r1170
Freq. setpoint
Act. frequency
from observer model
Continuous torque boost (SLVC)
P1610 = ...
Sets continuous torque boost in lower frequency range of SLVC (sensorless vector control).
Value is entered in [%] relative to rated motor torque r0333.
p1610 is only effective in the open-loop mode between 0 Hz and approx. ± p1755.
Acc. torque boost (SLVC)
P1611 = ...
Sets acceleration torque boost in lower frequency range of SLVC (sensorless vector
control). Value is entered in [%] relative to rated motor torque r0333.
p1611 is only effective in the open-loop mode between 0 Hz and approx. ± p1755.
In opposite to p1610 the acceleration torque boost p1611 is only in operation during
acceleration/deceleration.
MICROMASTER 440
Operating Instructions (Compact)
150 ms
r1490
0
Precontrol
r1084
r1438
–
*)
r0063
Droop
r1518
Kp Tn
–
r0064
*) only active, if pre-control is enabled
(p1496 > 0)
6 Commissioning
0
4 ms
3.0
400 ms
Torque
setpoint
r1508 r0079
50.0 %
0.0 %
51