LS Industrial Systems SV-iV5 Series - Auto-Tuning

6. Function Description
6-29
6.3.5 Auto-tuning
The motor parameters for the Vector Control are autotuned by Starvert-iV5. The stator resistance, Stator Inductance,
Leakage Inductance and Rotor time constant are found and saved. User can select the type of Auto-tuning in Rotational
or Standstill mode.
1) Motor and encoder parameters setting for auto-tuning
The following paramters should be set according to motor nameplate to find motor parameters correctly.
Code LCD display Description Setting range Unit
Factory
setting
PAR_07 Motor Select Motor capacity selection
2.2 ~ 375.0
User Define
PAR_08 UserMotorSel Motor cap. selection of USER 1.5 ~ 375.0 5.5
PAR_10 Enc Pulse Pulse no. of encoder 360 ~ 4096 1024
PAR_17 Base Speed Motor base speed 100.0 ~ 3600.0 rpm 1800.0
PAR_18 Rated Volt Motor rated voltage 120 ~ 560 V 220 or 440
PAR_19 Pole Number Motor number of poles 2 ~ 12 4
PAR_20 Efficiency Motor efficiency 0.0 ~ 100.0 %
PAR_21 Rated-Slip Motor rated slip 10 ~ 250 rpm
PAR_22 Rated-Curr Motor rated current 1.0 ~ 750.0 A
PAR_17 “Motor base speed” is the frequency inverter outputs its rated voltage. It is to be set within the range of
Motor Max speed. Set motor speed and rated voltage according to motor rating. When standard motor is
used, 60Hz (1800rpm) is the normal rating. The base speed of motor is
Number Pole
Frequency Base 120
×
=rpm
In the case of standard moto,
4
60120
1800
Hz
rpm
×
=
PAR_18 “Motor rated voltage”
For 200V class inverters, factory default is 220(V) and for 400V class is 440(V). When input voltage is 380(V), change it
to 380V. This value is input to Voltage controller and used to prevent voltage saturation. It should be set correctly
because it affects Flux current value during Auto-tuning.
PAR_20 “Motor efficiency” should be entered for (PAR_23[AutoTuneType] : StandStill), not needed for (PAR_23
[AutoTuneType] : Rotational).
PAR_21 “Motor rated slip”
It is calculated by Motor speed – Motor nameplate rated speed. For example, Motor speed is 1800(rpm) with
1740(rpm) rated speed. Then, Motor rated slip would be 60(rpm).