Lenze I95AE240F User Manual

12.4.4 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 mot
or current may be exceeded during the pole posion idencaon.
Possible consequence: irreversible damage of the motor.
▶
Set the motor data correctly. 4Motor data ^ 38
▶
Only use an inverter that is performance-matched to the motor.
DANGER!
Uncontrolled acceleraon of the motor!
Undened state of the feedback system, caused by wire breakage!
▶
Each pole posion
idencaon causes an update of the pole posion set in the device!
Therefore, ensure that the response to open circuit in the feedback system is set to Lenze
seng "1: Fault" in 0x2C45! Otherwise, the status of the feedback system in case of open
circuit is undened and the pole posion can assume any value. There is a danger that the
machine accelerates in an uncontrolled way aer pole posion idencaon!
NOTICE
Device state "switched-on"/"operaon"
▶
The process of the pole posion
idencaon only lasts some milliseconds. During the pole
posion idencaon, the device status does not change. Only aer the pole posion iden-
caon, the Operaon enabled device status changes to the Operaon enabled device
status.
▶
If pole posion idencaon is started via parameter 0x2825, the inverter is automacally
disabled at the end of the pole posion idencaon process.
Precondions
•
The wiring of the thr
ee motor phases and the motor encoder must be carried out accord-
ing to the specicaons from the
mounng instrucons.
•
The in
verter is ready for operaon (no fault acve).
•
For pole posion
idencaon (PPI) without movement, the motor must be at standsll.
NOTICE
▶
During the pole posion
idencaon, the error 0xFF13 ("idencaon cancelled") may
occur. This may be an indicaon that the motor features are not suitable for this PLI process.
Funconal
descripon
Aer inverter enable, a dened pulse paern is output that provides currents up to approx.
maximum motor current. The respecve currents are measured. Based on these currents, the
eld distribuon can be detected so that the pole posion can be calculated. Then, the inver-
ter is automacally disabled.
The pole posion idencaon PLI (without movement) does not need any parameterisaon.
Conguring the feedback system
S
ynchronous motor: Pole posion idencaon (PPI)
Pole posion idencaon (PPI) without movement
210

Lenze I95AE240F Specifications

General

Brand	Lenze
Model	I95AE240F
Category	Inverter
Language	English