Toshiba TOSVERT VF-MB1 Instruction Manual page 74

 =  ( Variable torque characteristic),  =  (Temperature estimation)
This parameter adjusts automatically overload protection, predicting the inverter internal temperature rise.
(diagonally shaded area in the figure below)
time [s]
60
0
Note 1: The rated output current of inverter is changed by setting of aul = 1 or 2 .
Refer to page L-1 about each rated output current.
Note 2: Parameter aul is displayed as "0" during reading after this is set.
Note 3: Present setting of inverter overload characteristic can be confirmed by status monitor.
Refer to monitor "Overload and region setting" of section 8.2.1.
6) Overload alarm level f657
When the motor overload level reaches to  setting value (%) of overload trip (OL2) level, output
frequency monitor and "L" of left side digit are blinking on overload alarm status.
Overload alarm signal can be output.
[Parameters settings]
Title Function
 Overload alarm level
[Example of setting] : Assigning the overload alarm to the OUT terminal.
Title Function
 Output terminal selection 2A (OUT)
17 is reverse signal.
105% 120%
Inverter overload protection characteristics
Adjustment range
10-100 (%)
Adjustment range
0-255
C-23
Monitored output current [%]
100%: Inverter rated output current
Default setting
50
Setting
16: POL
E6581697
3