Siemens MICROMASTER 440 Operating Instructions Manual page 116

3 Functions
Vector control with encoder (VC)
• First step: Parameterizing the speed encoder (refer to Section 3.5.7.15)
• When commissioning Vector Control with encoder-feedback (VC), the drive
should be configured for V/f mode (see p1300) first. Run the drive and compare
r0061 with r0021 that should agree in:
sign
-
magnitude (with a deviation of only a few percent)
-
Only if both criteria are fulfilled, change p1300 and select VC (p1300 = 21/23).
• Encoder loss detection must be disabled (p0492 = 0) if torque is limited
externally., e.g.:
closed-loop winder control
-
traversing / moving to a fixed endstop
-
when using a mechanical brake
-
Control mode
p1300=21
21 Vector control with sensor
p1442 = ... Filter time for act. speed
Sets time constant of PT1 filter to smooth actual speed of speed controller.
Decreasing the value leads to a higher dynamic of the speed regulation. Instability is seen if
the value is to low. p1442 = 2 can be set for most applications.
Gain speed controller
p1460 = ...
Enters gain of speed controller.
Integral time speed controller
p1462 = ...
Enters integral time of speed controller.
p1492
r1170
Freq. setpoint
Act. frequency
from encoder
116
150 ms
r1490
Precontrol
r1084
r1438
–
*)
r0063
Droop
r1518
Kp Tn
–
r0064
*) only active, if pre-control is enabled
(p1496 > 0)
MICROMASTER 440
Issue 10/06
0
4 ms
3.0
400 ms
Torque
setpoint
r1508 r0079
Operating Instructions
6SE6400-5AW00-0BP0