Toshiba TOSVERT VF-MB1 Instruction Manual page 71

 =  (150%-60s),  =  (Constant torque characteristic)
Protection is given uniformly regardless of ambient temperature, as shown by the 150%-60 sec overload curve
in the figure below.
Inverter overload
time [s]
3
 =  (Temperature estimation),  =  (Constant torque characteristic)
This parameter adjusts automatically overload protection, predicting the inverter internal temperature rise.
(diagonally shaded area in the figure below)
time [s]
60
0
110%
Inverter overload protection characteristics
60
0
110%
Inverter overload protection characteristics
Current Inverter overload time [s]
[%]
111
120
130
140
150
185
200
Monitored output current [%]
150%
100%: Inverter rated output current
Monitored output current [%]
150%
100%: Inverter rated output current
C-20
E6581697
(Outline data)
2400
240
120
80
60
2
0.5