Sensorless Vector Control; Vector Control - LG SV-iS5 Instruction Manual

Chapter 3 – Function Settings
FU2-40
No
All
Rs+Lsigma
Enc Test
Tr

6) Sensorless vector control

Set FU2-39 to 2 {Sensorless_S} or 3 {Sensorless_T} to enable Sensorless vector control. It is strongly recommended
to perform Auto-tuning for Sensorless before starting Sensorless control in order to maximize performance. Two types
of Sensorless vector control are available; Sensorless_S or Sensorless_T.
Parameter Name
Control mode selection
P, I gain for
sensorless control
Starting freq

7) Vector control

Set FU2-39 to 4 {Vector_SPD} or 5 {Vector_TRQ} to enable Vector control. Encoder should be installed to the motor
with Sub-B board in the inverter to start this control.
Parameter Name
Usage of Pulse
Input Signal
Pulse Input Signal
Selection
Encoder Pulse Number
Before selecting Vector control mode, encoder setting should be done as indicated above. If the parameter value of
actual motor is set in common setting, execute Auto-tuning before selecting vector control mode.
Morek IT OÜ, Rauna 24, 76506 Saue Harjumaa, Estonia. www.morek.eu Tel. +372 604 1423 Fax +372 604 1447 morek@morek.eu
Motor constants calculation disabled.
All constants can be measured in this code but different constants are tuned
according to control mode;
For V/F, Slip compen, Sensorless_S, Sensorless_T:
(No-load current, stator resistance, leakage inductance, stator inductance
available)
☞ Note: Only no-load current can be calculated during V/F and Slip
compensation.
For Vector_SPD, Vector_T:
(No-load current, stator resistance, leakage inductance, stator inductance,
encoder test, rotor filter time constant)
Calculates stator resistance, leakage inductance.
Calculates the encoder status.
Calculates Rotor filter time constant.
Code
FU2-39 Select Sensorless_S or Sensorless_T.
FU2-45, FU2-46 Set gain for Sensorless_S control.
FU1-22 Starting freq of the motor
Code
Defines the method of pulse input with SUB-B board
EXT -12
mounted. Vector control setting is valid only after this
parameter is set to 1 {Feed-back}.
3 types of pulse input: (A+B), A, -(A+B)
EXT -15
EXT -16 Enters the pulse number of encoder in the motor.
Description
Description
Description
40