Emerson Mentor MP Short Manual page 81

Action
Mentor MP is able to perform either a static, rotating or continuous
autotune. The motor must be at a standstill and unloaded before a
rotating autotune is enabled.
NOTE
A rotating autotune cannot be carried out in Estimated speed mode.
WARNING
Rotating autotune for motor field flux set-up
Rotating
When selected the drive will determine the Rated field compensation
autotune
factor (Pr 5.74) for rated flux and the motor field winding saturation break-
points (Pr 5.29 and Pr 5.30), by spinning the motor at 25% of its Base
speed Pr 5.08 (SE08, 0.29) with respect to the selected motor map and
store the values.
To perform an autotune:
• Set Pr 5.12 (SE13, 0.34) = 2 for a rotating autotune
• Close the Drive Enable signal (terminal 31). The drive will display
'rdY'
• Close the run signal (terminal 26 or 27). The lower display will flash
'Auto' and 'tunE' alternatively, while the drive is performing the
autotune
• Wait for the drive to display 'inh' and for the motor to come to a
standstill
If the drive trips, see Chapter 9 Diagnostics on page 122.
• Remove the drive enable and run signal from the drive.
Select SAVE in Pr xx.00 (SE00, 0.21)
Save
Press the red
parameters
Pr xx.00 (SE00, 0.21) returns to 'no Act').
Drive is now ready to run
• Close enable signal
Run
• Close run signal
• Provide speed reference
Mentor MP Short Form Guide
Issue Number: 5
A rotating autotune will cause the motor to accelerate up to
1
/ base speed in the direction selected regardless of the
4
reference provided. Once complete the motor will coast to a
stop. The enable signal must be removed before the drive
can be made to run at the required reference.
The drive can be stopped at any time by removing the run
signal or removing the drive enable.
reset button or toggle the reset digital input (ensure
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