Hitachi Vector Control with the SJ300 Inverter Application Note page 4

[Difference between each control]
Ø
Control performance
Item
Speed linearity
Speed fluctuation
Control range
Speed response
Torque control range
Torque response
Ø
Torque performance
Item
Down sized motor
Same kW motor
These are guaranteed minimum values with a Hitachi standard induction motor. Actual capability is greater.
s
Ø
Torque performance
Item
Down-sized motor
Same kW motor
s
This has been confirmed using Hitachi standard induction motor and J2 motor (for V2 control).
© 2002 Hitachi America, Ltd.
SLV mode V2 mode
<1 <
% 0.01 %
< <
1 % 0.01 %
1 : 50 1 : 100
15 rad/s 60 rad/s
1 : 50 1 : 100
50 rad/s 500 rad/s
at low speed
SLV control 0-SLV control
150% or more 150% or more
100% or more 100% or more
at 0Hz
0-SLV control
150% or more
with a small slip
100% or more
with a small slip
s Note: These are representative values only.
s Percentages are relative to base speed
V2 control
150% or more
100% or more
V2 control
150% or more
with standstill
100% or more
with standstill
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