Position Estimation - ABB ACSM1 Manual

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
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
POS
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
must be available in the revolution to correct the actual position of the drive.
Drive control and features
62.20 POS ACT
ACT) is calculated using the estimated speed as the position change between
60.01 POS ACT
OFFSET. The value of the parameter is added
62.21 POS COR MODE.
SEL. In addition, at least one latch signal
(1.12