Vector Control With Encoder (Vc) - Siemens MICROMASTER 440 Operating Instructions Manual

0,12 kw - 250 kw
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Issue 10/06
6.4.17.2

Vector control with encoder (VC)

First step: Parameterizing the speed encoder (refer to Section 6.4.15)
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
Filter time for act. speed
P1442 = ...
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
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
53

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Micromaster 440 series

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