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3. PM motor’s maximum rotation speed (22-05)
When using the flux-weakening function, the PM motor’s maximum rotation speed (22-05) must be
set higher than the PM motor’s rated rotation speed (22-04).
4. PM type selection (22-07)
When using the SPM motor, the recommended setting is 0. Related adjustable parameters are the
speed estimated gain (22-30) and the speed estimated filter value (22-31).
When using the IPM motor, the recommended setting is 1. Related adjustable parameters are the
speed estimated gain (22-34) and the speed estimated filter value (22-35).
5. PM SLV Start Current (22-10)
Set the torque current at start up and the unit is % of motor rated current.
6. I/F Mode Start Frequency Switching Point (22-11)
This function is for the switching point from open-loop to close-loop in PMSLV mode. The unit is
percentage for rated speed of motor .It recommends that over 5% for 400V and over 10% for 200V.
7. PM Armature Resistance (22-14)
Set the moto rresistance per phase in unit of 0.001Ω. This parameter is automatically set under the
motor auto-tuning (22-21).
Note: The motor resistance is different from the line resistance.
8. PM Motor D-axis Inductance (22-15)
Set motor D-axis inductance in unit of 0.01mH. This parameter is automatically set under the motor
auto-tuning (22-21).
9. PM Motor Q-axis Inductance (22-16)
Set motor Q-axis inductance in unit of 0.01mH. This parameter is automatically set under the motor
auto-tuning (22-21).
10. Flux-weakening Current Command Restriction (22-18)
(1) When the MTPA’s selected (22-32) setting is 0, the setting parameter’s (22-05) maximum motor
rotation speed is higher than the parameter’s (22-04) motor rated rotation speed. This will
automatically activate the flux-weakening control. Set this parameter to restrict the maximum
flux-weakening capability. The unit is the motor’s rated current percentage.
(2) When the MTPA’s (22-32) selected setting is 2 or 3, and the output voltage is too high, the
flux-weakening voltage command restriction setting value must be raised.
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