Lenze i550

9.3 Synchronous motor: Pole posion idencaon (PPI)
For controlling a permanent-magnet synchronous motor, the pole posion - the angle
between the motor phase U and the eld axis of the rotor - must be known.
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For Lenze motors with absolute value encoder or resolver, the pole posion has already
been set correctly.
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When incremental encoders are used (TTL or sin/cos encoders without absolute posion
informaon), a pole posion idencaon (PPI) is always required. This also applies to
Lenze motors.
Precondions
In 0x2C00 (P300.00) the motor control type "Sensorless control (SL PSM) [3]" is selected.
The "Pole posion idencaon (PPI) without movement" funcon is available for the iden-
caon of the pole posion for the inverter i5xx. ^ 167
9.3.1 Monitoring the pole posion idencaon
If an error occurs during the pole posion idencaon,
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the procedure is stopped without the sengs being changed.
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the response set in 0x2C60 is eected.
Parameter
Address Name / seng range / [default seng] Info
0x2C60 PPI monitoring: Reacon
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From version 04.00
Selecon of the response triggered by the occurrence of an error during
the pole posion idencaon (PLI).
Associated error code:
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28961 | 0x7121 - Pole posion idencaon fault
0 No response
4Error types ^ 611
1 Warning
2 Trouble
3 Fault
9.3.2 Pole posion idencaon (PPI) without movement
The PLI funcon can also be used if no motor revoluon is possible (holding brake acve).
NOTICE
With an incorrect parameter seng and dimensioning of the inverter, the maximum permissi-
ble motor current may be exceeded during the pole posion idencaon.
Possible consequence: irreversible damage of the motor.
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Set the motor data correctly. 4Motor data ^ 50
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Only use an inverter that is performance-matched to the motor.
Precondions
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The wiring of the three motor phases and the motor encoder must be carried out accord-
ing to the specicaons from the mounng instrucons.
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The inverter is ready for operaon (no fault acve).
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For pole posion idencaon (PPI) without movement, the motor must be at standsll.
Parameter
Address Name / seng range / [default seng] Info
0x2C63:001 PPI without movement: Execuon
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Seng can only be changed if the inverter is inhibi-
ted.
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From version 04.00
Starng performance (with or without pole posion idencaon before
the start).
0 Deacvated No pole posion is idened.
2 Aer each enable Aer every inverter release, the pole posion is idened without any
movement.
Conguring the feedback system
Synchronous motor: Pole posion idencaon (PPI)
Pole posion idencaon (PPI) without movement
167