Toshiba Tosvert VF-AS1 Instruction Manual page 94

 Setting of motor electronic thermal protection level 1
If the capacity of the motor is smaller than the capacity of the inverter, or the rated current of the motor is smaller
than the rated current of the inverter, adjust the electronic thermal protection level 1  so that it fits the motor's
rated current.
* If the indications are in percentages[%], then 100% equals the inverter's rated output current [A].
2) Motor 150%-overload time limit 
The motor 150%-overload time limit parameter  is used to set the time elapsed before the motor trips under
5
a load of 150% (overload trip ) within a range of 10 to 2400 sec.
Motor overload
time [s]
Motor 150%-
overload time limit

[Parameter setting]
Title

Output current reduction factor [%]/[A]
×1.0
×0.6
Setting the motor overload starting level
Operation
frequency
Operation frequency
0.01Hz *1
no less than

0
×1.1

×0.6

Motor overload protection characteristics
Function
Motor 150%-overload time limit

0
=Hz
[Example setting]
Monitored output
current [%]
= =

68 34
70 35
80 40
90 45
100 50
112 56
120 60
130 65
140 70
150 75
200 100
Monitored output current [%]
×1.5

Adjustment range
~ sec.
E-24
E6581442
Output frequency [Hz]
Motor overload time [s] (Outline data)
= =
0.01Hz  0.01Hz
≦ ≦
– 7200 – 3600
– 3600 – 1800
– 1000 – 500
– 600 – 300
– 420 – 210
12000 310 6000 155
2400 270 1200 135
1200 230 600 115
800 190 400
600 170 300
270 110 135
*1 Except for the cases of
= [Hz]
  
,
Default setting

95
85
55