Salicru CV50-008-4F User Manual page 76

Function
Name
code
Sudden power
loss frequency
P11.01
decreasing
function selection
Frequency
decreasing ratio
P11.02
at sudden power
loss
Overvoltage stall
P11.03
protection
Protection
P11.04 voltage at
overvoltage stall
Current limit
P11.05
action selection The actual increasing ratio is less than the ratio of output
Automatic
P11.06
current limit
The decreasing
P11.07 ratio during
current limit
76 - 144
Detailed instruction of parameters
0: Disabled
1: Enabled
Setting range: 0.00Hz/s~P00.03(max. frequency)
After the power loss of the grid, the bus voltage drops to the
sudden frequency-decreasing point, the inverter begins to
decrease the running frequency at P11.02, to make the
inverter generate power again. The returning power can
maintain the bus voltage to ensure a rated running of the
inverter until power recovery.
Voltage degree
Frequency-decreasing point at sudden power loss
Note:
1. Adjust the parameter properly to avoid the stopping caused
by inverter protection during the switching of the grid.
2. Disable input phase loss protection to enable this function.
0: Disable
1: Enable
120~150% of the standard bus voltage
frequency because of the big load during ACC running. It is
necessary to take measures to avoid overcurrent fault and
the inverter trips.
During the running of the inverter, this function will detect the output
current and compare it with the limit defined in P11.06. If it exceeds
the level, the inverter will run at stable frequency in ACC running, or
the inverter will derate to run during the constant running. If it
exceeds the level continuously, the output frequency will keep on
decreasing to the lower limit. If the output current is detected to be
lower than the limit level, the inverter will accelerate to run.
Default
value
0
10.00
Hz/s
400V
460V
1
136 %
01
Constant
Torque
load:
160.0 %
Variable
Torque
load:
120.0 %
10.00
Hz/s
Function Parameters
Modify
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