Code Alarm F60 Installation Manual Page 71

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Motor Control Parameters
S1A53838 09/2011 71
Auto-tuning
Before performing an auto-tune, verify that:
z A motor is connected and any load-side disconnect is closed.
z The motor is completely stopped and de-energized.
z The motor should be cool (room temperature).
z There is only one motor connected to the drive.
z All of the motor leads that will be used in the final installation are included in the output circuit during the auto-
tuning process.
z Motor leads are no longer than 30 m (100 ft). Motor leads longer than 30 m (100 ft) may result in reduced
motor torque and less than optimal motor control.
z No load reactors or filters are included in the motor circuit. Output reactors and filters may cause an auto-
tuning detected fault Etn1 and reduce effectiveness of sensorless vector control.
z The motor is not more than 1 hp size smaller than the drive.
z The motor has at least 2 and not more than 8 poles (750 to 3000 rpm).
z The motor does not have a high slip rating.
Auto tuning is performed upon the first start command after parameter [Auto-tuning drive] (F400) below is set
to 1 or 2 and is normally completed within 3 seconds. During the auto-tuning process, the graphic display option
displays Atn1.
During the auto-tuning process voltage is applied to the motor, although it barely rotates and produces very little
torque.
During the auto-tuning process, the drive checks for an output phase loss detection regardless of the setting of
parameter F605. An output phase loss detection EPH0 will abort the auto-tuning process.
If the auto-tuning process is unsuccessful, the drive will display Etn1. In this event, no results of the aborted
auto-tuning 1 will be saved in the drive, and a manual tuning of parameters [Slip Compensation] (F401), [Auto
Torque Boost] (F402), [Frequency loop gain] (F418) and [Freq. loop stability] (F419) will be required.
Code Name / Description Adjustment range Factory setting
F400 [Auto-tuning drive]
-0
DANGER
HAZARD OF ELECTRIC SHOCK OR ARC FLASH
z During auto-tuning, the motor operates at rated current.
z Do not service the motor during auto-tuning.
Failure to follow these instructions will result in death or serious injury.
WARNING
LOSS OF CONTROL
z It is essential that the following parameters uLu, uL, F415 and F417 are correctly configured before starting auto-
tuning.
z When one or more of these parameters have been changed after auto-tuning has been performed, F400 will return 0
and the procedure will have to be repeated.
Failure to follow these instructions can result in death or serious injury.
0
1
2
Auto tuning enable
[Disabled]
[Initialize constant]: Auto-tuning is performed immediatly if possible. Application of individual settings of Auto Torque Boost [Auto
Torque Boost] (F402)
[Complete tune]: Complete auto tuning.
Parameter F400 is reset to “0” after the auto tuning is performed.
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