LG SV-iS5 User Manual

Chapter 3 – Function Settings
40
FU2-40 Description
No Motor constants calculation disabled.
All
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)
Rs+Lsigma Calculates stator resistance, leakage inductance.
Enc Test Calculates the encoder status.
Tr Calculates Rotor filter time constant.
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 Code Description
Control mode selection
FU2-39 Select Sensorless_S or Sensorless_T.
P, I gain for
sensorless control
FU2-45, FU2-46
Set gain for Sensorless_S control.
Starting freq FU1-22 Starting freq of the motor
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 Code Description
Usage of Pulse
Input Signal
EXT -12
Defines the method of pulse input with SUB-B board
mounted. Vector control setting is valid only after this
parameter is set to 1 {Feed-back}.
Pulse Input Signal
Selection
EXT -15
3 types of pulse input: (A+B), A, -(A+B)
Encoder Pulse Number
EXT -16 Enters the pulse number of encoder in the motor.
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.
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LG SV-iS5 Specifications

General

Brand	LG
Model	SV-iS5
Category	Controller
Language	English