Toshiba TOSVERT VF-P7 Instruction Manual page 89

2) Motor 150%-overload time limit
The motor 150%-overload time limit parameter
the motor trips under a load of 150% (overload trip
Operation frequency
0.01 [Hz](*1)
Motor overload
withstanding time [s]
Motor 150%-overload
time limit 
0
×0.6×1.1
Title

3) Inverter overload characteristic
This function is provided to protect the inverter itself and it cannot be changed or
disabled by changing any parameter setting.
If the inverter overload trip function () is activated frequently, this condition can be
improved by changing the setting of the stall prevention level parameter  to a
lower level or increasing the acceleration time  or the deceleration time .
Inverter overload
withstanding time
Operation frequency
no less than 
×1.1
Function
Motor 150%-overload time limit
[s]
60
０
＊ If the load applied to the inverter exceeds 120% of its rated load or the
operation frequency is less than 0.1Hz, the inverter may trip in a shorter time.
Inverter's overload protective characteristic

is used to set the time elapsed before

) within a range of 10 to 2400 seconds.

[Example: setting of ]
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
 to  [s]
Output
current
[%]
106
110
115
120
120
140
150
180
105% 120%
100%: Inverter's rated output current
E-27
Motor overload withstanding time [s]
(Outline data)
=
≦
   [Hz] 

7200
−
− 3600
1000
−
600
−
420
−
12000 310 6000
2400 270 1200
1200 230 600
800 190 400
600 170 300
270 110 135
(*1) Except for the cases of
＝,  [Hz]
Adjustment range
Default setting
Inverter overload withstanding time
[s] (Outline data)
200V:18.5∼55kW 200V:75∼110kW
400V:18.5∼75kW 400V:90∼315kW
900
180
90
60
6.8
3.4
2.3
0.5
Monitored output current [%]
=
≦
   [Hz]
3600
−
− 1800
500
−
300
−
210
−
155
135
115
95
85
55

900
180
90
60
6
3
0.3
ｰ