SHENZHEN INVT ELECTRIC CO., LTD. CHV160 Operation Manual
82
voltage detected is lower than the over-voltage stall point, the inverter continues to decelerate,
as shown by following figure:
Figure 6-24 Over-voltage Stall Function
Function
Code
Name
Description
setting
range
Default
Value
Pb.11
Over-current Stall Protection
0: prohibit
1: allowed
0
1
0
Pb.12
Over-current stall protection
current ratio
100
200%
100
200
150%
Pb.13
Over-current Frequency Drop
Rate
0.00
50.00Hz/s
0.00
50.00
0.00Hz/s
During inverter acceleration, the load is so big that the actual motor speed increase rate is
lower than the output frequency increase rate, causing the ACCEL over-current breakdown
which then could cause inverter tripping if no provision is made.
Over-current stall protection function is to detect the output current and compare it with
the stall over-current point defined by PB.12. If it exceeds the stall over-current point, the
inverter output frequency decreases at the over-current frequency drop rate (Pb.13), and when
the next output current detected is lower than the over-current stall point, the inverter
continues to accelerate, as shown by following figure:
