AF6ZP0CA – COMBIAC0 & ACE0 2uC – User Manual Page – 49/155
- Use the TESTER function to monitor the motor speed for the next steps.
- Activate the TILLER and FW (or BW) microswitches. Motor starts running
in open-loop mode.
- Because of the open-loop mode, it is normal if the reported speed is not
perfectly stable, but value on display must be, in any case, quite fixed.
- If the motor does not spin, it vibrates or speed on display oscillates too
much, stop the acquisition procedure releasing the FW or BW command
(see troubleshooting at the paragraph end).
- The first phase, where motor is spinning at low speed (something like
5 Hz), allows the inverter to acquire signal offset and amplitude for both
channels.
- After the previous steps are completed, rotor is aligned to the magnetic
field origin, and the sin/cos angle is acquired and stored.
- 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.
- 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).
- If increasing ABS.SENS. ACQ.ID is not enough, increase the
ABS.SENS.A.KTETA parameter. It manages the speed in the open-loop
phase and in some situations a faster speed can help to achieve a more
even rotation.
4 Offset angle can also be manually refined using the MAN.OFFSET ANGLE
parameter. However, the voltage range of the sensor must be first acquired using
the automatic procedure.
7.4 Set-up procedure for AC pump inverter
This section describes the basic set-up procedure for the ACE0 inverter in pump
configuration. If you need to replicate the same set of settings on different
controllers, use the SAVE and RESTORE sequence; otherwise go down the
following sequence.
- In ADJUSTMENT, set BATTERY VOLTAGE according to the nominal
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