LSIS LSLV-S100 - Detecting the Initial Pole Position

156
Learning Advanced Features
Group
Code
Name
LCD Display
Parameter Setting
Setting Range
Unit
49
Current controller I
gain
ACR I Gain 120 0–10000 -
50
Voltage controller
limit
V Con HR 10.0% 0–1000 %
51
Voltage controller I
gain
V Con Ki 10.0% 0–20000 %
52
Torque controller
output filter
Torque Out LPF 0 0–2000 msec
53
Torque limit source
Torque Lmt Src
0
Keypad-1
0–12
54
FWD reverse torque
limit
FWD +Trq Lmt 180.0 0.0–200.0 %
55
FWD regenerative
torque limit
FWD -Trq Lmt 180.0 0.0–200.0 %
56
REV regenerative
torque limit
REV +Trq Lmt 180.0 0.0–200.0 %
57
REV reverse torque
limit
REV -Trq Lmt 180.0 0.0–200.0 %
For high-performance operation, the parameter values of the motor connected to the inverter output
must be estimated. Configure the motor-related Basic function group parameters by entering the
motor specification values on the rating plate. Then, perform auto tuning by setting bA. 20 (Auto
Tuning) to 7 [All (PM)] to automatically measure other parameters before operating a PM synchronous
motor in sensorless vector control mode. For high-performance PM sensorless vector control, the
inverter and the motor must have the same capacity. The inverter control may be inaccurate if the
motor capacity and the inverter capacity do not match. In sensorless vector control mode, do not
connect multiple motors to the inverter output.
5.11.1 Detecting the Initial Pole Position
Initial pole position detection is a process to match the rotor position calculated by the inverter
and the actual rotor position in a motor. In a permanent-magnet (PM) synchronous motor, rotor
flux is generated from the permanent magnet attached to the rotor. Therefore, to run the motor in
vector control mode, the exact rotor position (flux position) must be detected for accurate control
of the torque generated by the motor.
At Cn. 46 (InitAngle Sel), select the type of initial pole position detection.
When Cn. 46 is set to 0 (None), the motor is operated according to the pole position estimated by
the inverter’s internal algorithm, instead of actually detecting the physical position of the rotor