LSIS LSLV-S100 - Sensorless Vector Control Mode Settings for PM Synchronous Motors

Learning Advanced Features
197
When Cn. 46 is set to 0 (None), the motor is operated according to the pole position
estimated by the inverter’s sensorless control algorithm, instead of actually detecting the
physical position of the rotor pole.
When Cn. 46 is set to 1 (Angle Detect), the motor is operated according to the pole position
detected by changes in the current. The voltage pulse input is used to detect the pole
position and results in a small amount of noise at motor startup.
When Cn. 46 is set to 2 (Alignment), the inverter forcefully align the rotor position by
supplying DC current for a certain period of time.
Group
Code
Name
LCD display
Setting
Setting range
Unit
Cn
35
Pole position detection
retry count
PD Repeat
Num
1
0–10
-
36
Pole position detection
interval
Pulse Interval
20
1–100
Ms
37
Pole position detection
pulse current (%)
Pulse Curr %
15
10–100
%
38
Pole position detection
pulse voltage (%)
Pulse Volt %
500
100–4000
-
46
Pole position detection
type
Init Angle Sel
0
None
0–2
-
1
Angle
Detect
2
Alignment
Sensorless Vector Control Mode Settings for PM
Synchronous Motors
To operate a PM synchronous motor in sensorless vector control mode, set dr.09 (Control
Mode) to 6 (PM Sensorless), select the motor capacity at dr.14 (Motor Capacity), and enter
the appropriate codes in the Basic (bA) group with the motor specification values found on
the motor’s rating plate. If a specific motor capacity does not exist in the setting options,
select a higher motor capacity that is closest to the actual motor capacity.
Code
Input Values (Motor’s Rating Plate Information)
dr.18 Base Freq
Base frequency
dr.20 Max Freq
Maximum frequency
bA.11 Pole Number
Motor pole number
bA.13 Rated Curr
Rated current
bA.15 Rated Volt
Rate voltage
bA.16 Efficiency
Efficiency
bA.19 AC Input Volt
Input power voltage