• General-purpose motor and inverter motor
Induction motors are classified as general-purpose motors or inverter
motors, based on their cooling capabilities. Therefore, the motor overload
function operates differently between these two motor types.
i Electronicthermal
i Cooling effect Torque characteristics overload
iEffectivewhen } "eL :" error(motor
' Gos_ overloadprotection)
Ioperated at "" "- _ -- s_o_ir.e.._
i50/60Hz from _l _ ] I occurs when
,commercial co_uous continuously
ipower supply. To_,u_ operatedat50/60Hz
(%)
i '_l or ,assat100%,pad.
5' L" X_.__
Ei ..
3 20 6(I 12g
OPERATIONFREQUENCY(Hzl
_=_ Base Frequency 60Hz
_i (V/f for 60Hz, 220V Input Voltage)
Forlow-speed operation, torque
must be limited in order tostop
motor temperature rise.
Effective even _80 _ _0s_c_ Electronicthermal
when operated at _ - -- _0_ overloadprotection
low speed notactivated even
! whencontinuously
(approx. 6Hz) (_quE 100 -'_+--_-_NC operatedat50/60Hz
or less at 100% toad.
E
OPERATIONFR_QUENCYIIIzl
Base Frequency 60Hz
(V/ffor 60Hz, 220V Input Voltage)
Use an inverter motor for
continuous operationat low speed.
58
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