Toshiba TOSVERT VF-PS1 Instruction Manual page 93

This parameter adjusts automatically overload protection, predicting the inverter internal temperature rise.
(diagonally shaded area in the figure below)
Note 1: If the load applied to the inverter exceeds 120% of its rated load or the operation frequency is less than
Note 2: The inverter is factory-set so that, if the inverter becomes overloaded, it will automatically reduce the
5
= (Estimation of temperature)
time [s]
60
0
Inverter overload protection characteristics
0.1Hz, the inverter may trip (
carrier frequency to avoid an overload trip (
causes an increase in noise from the motor, but this does not affect the performance of the inverter.
If you do not want the inverter to reduce the carrier frequency automatically, set the parameter
= .
110% 120%
or ~ ) in a shorter time.
or ~
E-24
E6581531
Monitored output current [%]
100%: Inverter rated output current
). A reduction in carrier frequency