ABB ACS140 - Page 76

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Figure 12 Thermal protection trip times when parameters 3005
MOT THERM
TIME, 3006 MOT LOAD CURVE and 3007 ZERO SPEED LOAD have default values.
I
O
/ I
N
f
O
/ f
BRK
I
O
= output current
I
N
= nominal current of the motor
f
O
= output frequency
f
BRK
= break point frequency (parameter 3008 BREAK POINT)
60 s
90 s
180 s
300 s
600 s
∞
3.5
3.0
2.5
2.0
1.5
1.0
0.5
Trip time
0
0 0.2 0.4 0.6 0.8 1.0 1.2
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