Specifications
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101
Function
Function
Function
Function
code
code
code
code
Name
Name
Name
Name Setting
Setting
Setting
Setting range
range
range
range
Fb.07
Over-voltage
stall protection
point
110~150%
【 120% 】
During deceleration, the motor ’ s decelerating rate
may be lower than that of inverter ’ s output
frequency due to the load inertia. At this time, the
motor will feed the energy back to the inverter,
resulting in rise of DC bus voltage rise. If no
measures taken, the inverter will trip due to over
voltage.
During deceleration, the inverter detects DC bus
voltage and compares it with o ver-voltage stall
protection point . If DC bus voltage exceeds F b.07,
the inverter will stop reducing its output frequency.
When DC bus voltage become lower than F b.07,
the deceleration continues, as shown in following
figure.
Figure 6. 28 Over -voltage stall function .
Function
Function
Function
Function
code
code
code
code
Name
Name
Name
Name Setting
Setting
Setting
Setting range
range
range
range
Fb.08
Auto current
limiting
threshold
50.0~200.0%
【 Depends on
model 】
Auto current limiting is used to limit the
current of inverter smaller than the value
determined by Fb.08 in real time. Fb.08 G type :
160% ; P type : 120% 。
Function
Function
Function
Function
code
code
code
code
Name
Name
Name
Name Setting
Setting
Setting
Setting range
range
range
range
Fb.09
Frequency
decrease rate
when current
limiting
0.00~50.00Hz/s
【 10.00Hz/s 】