E-27
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 a load of 150% (overload trip
) within a range of 10 to 2400 seconds.
[Example: setting of
]
Monitored output
current [%]
Motor overload withstanding time [s]
(Outline data)
=
=
=
=
≦
[Hz]
≦
[Hz]
68
34
−
7200
−
3600
70
35
−
3600
−
1800
80
40
−
1000
−
500
90
45
−
600
−
300
100
50
−
420
−
210
112
56
12000
310
6000
155
120
60
2400
270
1200
135
130
65
1200
230
600
115
140
70
800
190
400
95
150
75
600
170
300
85
200
100
270
110
135
55
Title
Function
Adjustment range
Default setting
Motor 150%-overload time limit
to
[s]
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
[s] (Outline data)
Output
current
[%]
200V:18.5
〜
55kW
400V:18.5
〜
75kW
200V:75
〜
110kW
400V:90
〜
315kW
106
900
900
110
180
180
115
90
90
120
60
60
120
6.8
6
140
3.4
3
150
2.3
0.3
180
0.5
ｰ
＊
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
Monitored output current [%]
Inverter overload
withstanding time
[s]
60
０
105%
120%
100%: Inverter's rated output current
Monitored output current [%]
Motor 150%-overload
time limit
Motor overload
withstanding time [s]
0
×
0.6
×
1.1
×
1.1
×
1.5
Operation frequency
no less than
Operation frequency
0.01 [Hz](*1)
(*1) Except for the cases of
＝
,
[Hz]
