Sensorless Vector Control - LG SV-iC5 Series Instruction Manual

10.9

Sensorless vector control

Group LED Display
Function
H40
group 2
H30
H32
H33
H34
H42
H44
F14
If H40 – [Control mode select] is set to 3, Sensorless vector control will become active.
☞ Caution :
Motor parameters should be measured for high performance. It is highly recommended H41 – [Auto tuning] be
done prior to proceeding operation via Sensorless vector control.
Ensure that the following parameters are entered correctly for high perfomance in Sonsorless
vector control.
H30 : Select motor type connected to inverter output.
H32 : Enter rated slip frequency based on motor nameplate RPM and rated frequency.
H33 : Enter motor nameplate rated current.
H34 : After removing the motor load, select H40 – [Control mode select] to 0 {V/F control} and run
the motor at 60Hz. Enter the current displayed in Cur-[Output current] as motor no load current. If it is
difficult to remove the load from the motor shaft, enter the value either 40 to 50% of the H33 – [Motor
rated current] or the factory default.
H42, H44 : Enter the value of the parameter measured during H41 – [Auto tuning] or the factory
default.
F14 : This parameter accelerates the motor after pre-excitating the motor for the set time. The
amount of the excitating current is set in H34- [Motor no load current].
Parameter Name
[Control mode select]
[Motor type select]
[Rated
slip frequency]
[Motor rated current]
[Motor No Load Current]
[Stator resistance (Rs)]
[Leakage inductance (Lσ)]
[Time for energizing a motor]
10-11
10. Advanced functions
Set Min/Max
value Range
3 0/3
- 0.2/2.2
- 0/10
- 1.0/12
- 0.1/12
- 0/14.0
- 0/300.00
0.0/60.0
-
Factory
Unit
Defaults
0 -
- kW
- Hz
- A
- A
Ω
-
- mH
1.0 Sec
SV-iC5