Toshiba TOSVERT VF-AS1 Instruction Manual page 97

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
0.01Hz *1
0
×1.1

×0.6

Motor overload protection characteristics
Function
Motor 150%-overload time limit

0
=Hz
[Example setting]
Operation
Monitored output
frequency
current [%]
no less than
= =

68
70
80
90
100
112
120
130
140
150
200 100
×1.5

Adjustment range
~ sec.
E-24
Output frequency [Hz]
Motor overload time [s] (Outline data)
= =
 0.01Hz 
34 – 7200
35 – 3600
40 – 1000
45 – 600
50 – 420
56 12000 310 6000
60 2400 270 1200
65 1200 230 600
70 800 190 400
75 600 170 300
270 110 135
Monitored output current [%]
*1 Except for the cases of
=
  
,
Default setting
E6581528
0.01Hz
– 3600
– 1800
– 500
– 300
– 210
155
135
115
95
85
55
[Hz]
