62
1
:
Enabled
The setting of FL.03 is given in the table below:
Model
Range
Default
380V 120.0%
~
150.0% 140.0%
220V 110.0%
~
130.0% 120.0%
When the inverter is decelerating, the motor’s decreasing rate may be
lower than that of the inverter’s output frequency due to the inertia of
load. At this time, the motor will feed the energy back to the inverter,
resulting in voltage rise on the inverter's DC bus, which will cause
overvoltage trip.
Function of FL.03: during the deceleration, the inverter detects the bus
voltage and compares it with the stall over voltage point defined by
FL.03. If the bus voltage exceeds FL.03, the inverter will stop reducing
its output frequency. When the detected bus voltage is lower than the
point, the deceleration will continue. Please refer to in Figure 6-76.
Figure 6-76 Stall Overvoltage
Stall
overvoltage
point
Output
freq.
Time
Time