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Drive control and features
60
With absolute encoders and resolvers, there is often a need to change the position
calculation zero permanently without physically rotating the motor. This is possible
by using parameter
. The value of the parameter is added
to the position feedback value. The offset can be made permanent after the homing
procedure using parameter
.
Position estimation
With synchronous motors, the drive also supports positioning without a speed and
position feedback device. In position estimation, the actual position of the drive (
) is calculated using the estimated speed as the position change between
the current time and the last known position. The accuracy of this position estimate
depends heavily on the motor model accuracy. The different types of position
scaling, the drive position system range and the hardware limits are the same as for
position calculation.
Position estimation can be selected as the position feedback value for the position
controller via parameter
. In addition, at least one latch signal
must be available in the revolution to correct the actual position of the drive.
Содержание ACSM1 Series
Страница 1: ...ABB motion control drives Firmware manual ACSM1 motion control program ...
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Страница 34: ...Drive programming using PC tools 34 ...
Страница 86: ...Drive control and features 86 ...
Страница 265: ...Parameters and firmware blocks 265 1 100 us 100 µs 2 1 ms 1 ms 3 50 ms 50 ms ...
Страница 302: ...Parameter data 302 ...
Страница 422: ...Application program template 422 ...
Страница 430: ...Appendix A Fieldbus control 430 ...
Страница 500: ...Appendix D Application examples 500 ...
Страница 508: ...Appendix E Control chain and drive logic diagrams 508 ...
Страница 510: ...3AFE68848270 REV H EN 2015 06 26 Contact us www abb com drives www abb com drivespartners ...