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Chapter 6 - Parameter Description [FU2]
6-25
FU2-40 LCD display Description
0 No Auto-tuning disabled
1 All
Auto-tuning all
parameters
2 Rs + Lsigma
Stator resistance (Rs) and
Leakage inductance
(Lsigma) Auto-tuning
3 Enc Test PG status check
4 Tr
Rotor constant(Tr)
calculation
➨ Note 1 : Ls and Noload-Curr are only valid during Motor
Rotation mode.
➨ Note 2 : The motor constants values change with temperature
change, so auto tuning is to be conducted after the
temperature of the motor is stabilized.
➨ Note 3 : The auto-tuning result could be different unless CMC
motor is used.
➨ Note 4 : The actual motor parameters (Rs, Rr, Lsigma, Tr)
can be used or set by user.
Code LCD display Name Description
FU2-
34
Noload-Curr
No Load
Motor
Current
(RMS)
Setting and display the No
Load Motor Current
(RMS)
FU2-
40
Auto tuning Auto Tuning Auto-tuning enable
FU2-
41
Rs
Stator
resistance
Setting and display the
Stator resistance Rs
FU2-
42
Lsigma
Leakage
inductance
Setting and display the
Lsigma
FU2-
43
Ls
Stator
inductance
Setting and display the
Stator inductance Ls
FU2-
44
Tr
Rotor
constant
Setting and display the
Rotor constant Tr.
[Keypad display during Auto-tuning of motor parameters]
Display
Code
LED 7-Segment
Description
Rs Tuning
T1 Displayed during Stator
resistance (Rs) Auto-tuning
Lsigma
Tuning
T2 Displayed during Leakage
inductance (Lsigma) auto-
tuning.
Ls Tuning
T3 Displayed during Stator
inductance (Ls) and No-load
current auto-tuning.
FU2-
40
ENC Test
T4 Displayed during Encoder
auto-tuning.
Tr Tuning
T5 Displayed during Rotor filter
time constant (Tr) auto-
tuning
[Keypad error display after Encoder test]
Display
Code
LED 7-Segment
Description
Enc Err
T6 Displayed when incorrect
Encoder wiring error occurs
FU2-
40
Enc Rev
T7 Displayed when Encoder
wiring is connected reversly.
[Motor parameter display corresponding to inverter
capacity]
Motor parameter
Class
inverter
capacity
Rs Lsigma Ls Tr
0.8[kW] ~
5.5[kW]
X.XXX
ohm
X.XX
mH
X.XX
mH
XXX
ms
200V
7.5[kW] ~
55[kW]
X.X
mohm
X.XXX
mH
X.XX
mH
XXX
ms
0.8[kW] ~
1.5[kW]
X.XX
ohm
X.X mH X. mH
XXX
ms
2.2[kW] ~
15[kW]
X.XXX
ohm
X.XX
mH
X.X mH
XXX
ms
400V
18.5[kW] ~
75[kW]
X.X
mohm
X.XXX
mH
X.XX
XXX
ms
➨ Note : For 7-segment Keypad, parameter unit is not
displayed.
FU2-45: P Gain for Sensorless Control
FU2-46: I Gain for Sensorless Control
SL P-gain is the proportional gain of speed controller. If
this value is set high, you can get fast speed response
characteristic. However, if this value is set too high, the
steady state characteristics may become unstable.
FU2
►
SL P-gain
45 32767
3276 45
Factory Default: 32767 3276
Related Functions: FU2-30~37 [Motor related parameters]
FU2-39 [Control mode selection]
EXT-01 [Sub Board Type Display]
EXT-14 [Encoder Feedback Frequency]
EXT-15 [Pulse Input Signal Selection
]