BENSHAW RSi GM2 Series - Sensorless Vector Control for Induction Motors

Learning Advanced Features
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GM2 Series VFD
Sensorless Vector Control for Induction Motors
Sensorless vector control provides a more accurate estimation of the motor rotation speed
compared to V/F control. When auto tuning is completed, the inverter calculates motor speed and
does not require the rotating speed feedback from the motor. Sensorless vector control can also
generate greater torque at a lower level of current.
Group
Code
Name
Setting
Setting Range
Unit
dr
09
Control mode
4
IM Sensorless
-
-
14
Motor capacity
Varies by Motor capacity
0–15
-
18
Base frequency
60
30–400
Hz
bA
11
Number of motor poles
4
2–48
-
12
Rated slip speed
Varies by Motor capacity
0–3000
Hz
13
Motor rated current
Varies by Motor capacity
1–1000
A
14
Motor noload current
Varies by Motor capacity
0.0–1000
A
15
Motor rated voltage
220/380/440/480
170–480
V
16
Motor efficiency
Varies by Motor capacity
64–100
%
20
Auto tuning
1
All
-
-
Cn
09
Initial excitation time
1.0
0.0–60.0
sec
10
Initial excitation
amount
100.0
100.0–300.0
%
21
Low-speed torque
compensation gain
Varies by Motor capacity
50–300
%
22
Output torque
compensation gain
Varies by Motor capacity
50–300
%
23
Speed deviation
compensation gain
Varies by Motor capacity
50–300
%
24
Main compensation of
speed deviation
Varies by Motor capacity
50–300
%
29
No load speed
deviation
compensation gain
1.06
0.50–2.00
-
30
Speed response
adjustment gain
4.0
2.0–10.0
-
53
Torque limit setting
0
Keypad-1
0–12
-
54
Forward direction
retrograde torque limit
180.0
0.0–200.0
%
55
Forward direction
regenerative torque
limit
180.0
0.0–200.0
%
56
Reverse direction
regenerative torque
limit
180.0
0.0–200.0
%
57
Reverse direction
retrograde torque limit
180.0
0.0–200.0
%