Activating Encoder Feedback; Performing A Normal Id Run - ABB ACS880 Manual

36 Start-up
Start the drive again to a slow speed. Check that the motor rotates in the correct (forward)
direction with a positive speed reference.

Activating encoder feedback

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With the motor running at a slow speed (eg. 100 rpm), check that parameters 1.02 Motor
estimated speed and 24.02 Used speed feedback are equal both in value and sign. (1.04
Encoder speed 1 can be different; see section
in Drive Composer pro.
Set parameter 90.41 Motor feedback selection to Encoder 1.
It is recommended to reboot the control unit at this point either by cycling the power to it or
by using parameter 96.08 Control board boot.
After the reboot, enable service-level parameters again and start monitoring in Drive
Composer pro.
Start the drive to 100 rpm and check that the polarities of 24.02 Used speed feedback and
24.01 Used speed reference match.

Performing a Normal ID run

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If possible, a "rotating" ID run should be run. This can most conveniently be done when the
motor shaft is not yet coupled to the machinery. For a permanent magnet motor, the Normal,
Reduced and Advanced ID run methods are identical.
Before activating the ID run, check that the speed limits in parameter group 30 are high
enough, ie. set according to nominal motor values.
Start monitoring in Drive Composer pro. Select the Normal ID run in parameter 99.13 ID
run requested. Start the motor in local control in Drive Composer pro.
After the ID run finishes, save the monitoring file.
Now, the measured BackEMF voltage can be calculated by multiplying 98.08 PM flux user
by 99.07 Motor nominal voltage. 98.08 PM flux user is a factor value and indicates how
close the BackEMF voltage given in 99.07 Motor nominal voltage is to the measured voltage.
If 98.08 is 1.00, the two voltages are equal.
Encoder settings.) Save the monitoring file