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(2-5) Example of tuning effects (SLV mode)
This section shows examples of actual effects when changing each parameter by showing motor current
waveforms. Please note that
This data is reference only! It is only intended as a guide for obtaining optimal performance.
<Summary of examples>
Common condition
Ø
INV : SJ300-007HFE (rated output current = 2.5A)
Motor : Hitachi standard induction motor (380V 50Hz 0.75kW 1.9A 4p 1420rpm) No load (shaft free)
Ø
s
Set frequency [F001] = 3.00Hz
s
Acceleration time [F002] = 0.01s, Deceleration time [F003] = 0.01s
s
Control mode [A044] = 03 ; SLV mode (open loop)
s
All others are default settings
Parameter
b083 : Carrier frequency
H003 : Motor kW
H004 : Motor poles
H005 : Speed response factor K
H020 : Motor R1
H021 : Motor R2
H022 : Motor L
H023 : Motor Io
H024 : Total J
H050 : P-gain of K
H051 : I-gain of K
Note - the graphs show steady state operation for comparison purposes only. Response characteristics cannot
be determined from this data.
1) Ref A:
1 A 200 ms
Data00. Default parameter
Actual frequency (average) f(ave) = 2.88Hz
I
= 1.38Arms
M
© 2002 Hitachi America, Ltd.
examples. Actual motor performance will depend on the application.
these are just
Default parameter
Data00
5.0 kHz
0.75 kW
4
1.590
11.93
6.392
51.88 mH
1.26 A
2
0.009 kgm
100 %
100%
T
comparison
Data number
0.5 kHz
Data01
15 kHz
75kW
Data02
8
Data03
0.100
Data04
10.00
3.000
Data05
30.00
3.000
Data06
30.00
10.00
Data07
200.0
0.3
Data08
3.0
0.001
Data09
0.100
1
Data10
500
1
Data11
200
1) Ref A:
2 A 200 ms
2) Ref A:
2 A 200 ms
3) Ref A:
2 A 200 ms
Data01. Carrier frequency 5kHzà0.5kHz / 15kHz
f (ave) =
2.92 Hz
I
=
1.42 Arms
M
11
Remarks
OC trip
Shock at start
OC trip
OC trip
Shock at start
fc = 15kHz
T
T
fc = 0.5kHz
T
T
T
Default parameter
/
2.88Hz
/
1.38
Vector control technical information
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