Learning Advanced Features
154
Problem
Relevant function code Troubleshooting
100%).
The motor hunts when the
load increases from the base
frequency or higher.
Cn.22 ASR-SL I Gain1
Cn.24 ASR-SL I Gain2
Increase the value of Cn.22 by increments
of 50m/s or decrease the value of Cn.24 by
decrements of 5%.
The motor hunts as the load
increases.
Cn.28 S-Est P Gain1
Cn.29 S-Est I Gain1
At low speed (10Hz or lower), increase the
value of Cn.29 by increments of 5.
At mid speed (30 Hz or higher), increase
the value of Cn.28 by increments of 500. If
the parameter setting is too extreme, over
current trip may occur at low speed.
The motor speed level
decreases.
bA.20 Auto Tuning
Select 6. Tr (static type) from bA. 24 and
run bA.24 Rotor time constant tuning.
*Hunting: Symptom of irregular vibration of the equipment.
Sensorless Vector Control for PM (Permanent-
Magnet) Synchronous Motors
Sensorless vector control is an operation that carries out vector control without rotation speed
feedback from the motor but instead, with an estimation of the motor rotation speed calculated by
the inverter.
Group
Code
Name
LCD Display
Parameter Setting
Setting
Range
Unit
dr
09
Control mode Control Mode
6
PM Sensorless
-
-
14
Motor capacity Motor Capacity
Depends on the motor
capacity
0–15
-
18
Base
frequency
Base Freq
Depends on the PM
motor capacity
30–180
Hz
20
Maximum
frequency
Max Freq
Depends on the PM
motor capacity
40–180
Hz
bA
11
Motor pole
number
Pole Number
4
2–48
-
13
Rated motor
current
Rated Curr
Depends on the motor
capacity
1–1000
A
15
Motor-rated
voltage
Motor Volt
230/380/460/480
170–480 V
16
Motor
efficiency
Efficiency
Depends on the motor
capacity
64–100
%
19
Motor input
voltage
AC Input Volt
230/460
170–480
20
Auto tuning
Auto Tuning
7
All (PM)
-
32
Q-axis
Lq (PM) Scale
100%
50–150
%
Содержание Rsi S Series
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