ARTDrive V2 series - Instruction Manual Chapter 7 Appendix • 323
Figure 7.3.3: IGBT Voltage Output Signal Not Optmized 2
NOTE! In the same menu, REG PARAM / DeadTime, there is also E04.00 -
Dead time limit parameter. It should be left at its default value, or to
the value estimated by self tuning.
Go to the next step to improve the sensorless gains observer, next chapter.
7.3.1 Sensorless Gains Profile Tuning
In the Sensorless regulation mode the motor speed is estimated through an
observer algorithm based on a speed gains profile. The procedure below
allows the user to improve the gains profile of the observer circuit at low,
medium and high Motoring/Regen speed.
Use same scope and connections of point 15;
In the INTERFACE / An Out 2 drive menu, program the Analog output 2:
- C09.00 - AO 2 src connected to Speed ref 1 variable
On the 23-22 drive terminals place channel 2 to display the speed reference.
Run the motor at low rpm up to 1/10 of motor nominal speed.
Go to menu:
REG PARAM / Sls Fgains
Adjust:
E08.04 - Sls mot LPgain and E08.05 - Sls mot LIgain gains to match the
figure 7.3.1.1.
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