AFNZPxxx– DUALACE2 NEW GENERATION – User Manual Page 67/169
- The next part is a sort of verification, where the motor is accelerated up
to 50 Hz in closed-loop mode.
- Because of the closed loop, the speed reported on display must be
stable.
- If something has gone wrong (rotor is not correctly aligned because of
friction on the shaft or any other problem), it is possible that rotor starts
spinning at uncontrolled speed with high current absorption. The only
way to stop it is by switching the inverter off using the key switch.
- When the procedure is correctly completed, the main contactor opens
and display shows ACQUIRE END.
- Re-cycle the key switch and verify that the motor can run according to
the accelerator input in both directions.
The inverter goes down the procedure automatically; every phase is marked by a
different message on display.
In case of problems, mainly in the first phase, consider the following suggestions.
- Check that PM motor pole pairs are set correctly.
- Check that sensor pole pairs are set correctly.
- In HARDWARE SETTING increase the ABS.SENS. ACQ.ID parameter
(the motor current used for the open-loop phase) so to have more torque
and perhaps solve some friction problems (ID RMS MAX must be set
congruently).
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