IACDRIVE I5000 Series Operation Manual page 76

Sensorless vector control inverter
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The value can be determined by the following formula:
Motor overload protection current = (motor rated current / inverter rated current) * 100%
Notice:
This parameter is normally used when rated power of inverter is greater than rated
power of motor.
Motor overload protection time: 60s with 200% of rated current. For details, please
refer to above figure.
Function
Code
Threshold of
PB.02
Decrease rate
PB.03
of trip-free
If PB.03 is set to be 0, the trip-free function is invalid.
Trip-free function enables the inverter to perform low-voltage compensation when DC bus voltage
drops below PB.02. The inverter can continue to run without tripping by reducing its output
frequency and feedback energy via motor.
Notice: If PB.03 is too big, the feedback energy of motor will be too large and may cause
over-voltage fault. If PB.03 is too small, the feedback energy of motor will be too small to
achieve voltage compensation effect. So please set PB.03 according to load inertia and the
actual load.
Function
Code
Over-voltage
PB.04
stall protection
Figure 6.27 Motor overload protection curve.
Name
Description
70.0~110.0%
trip-free
0.00Hz~P0.04
Name
Setting Range
70.0~110.0
0.00Hz~P0.04
Description
0: Disabled
1: Enabled
74
Factory
Setting
80.0%
0.00Hz
Setting
Factory
Range
Setting
0~1
1

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