SHENZHEN INVT ELECTRIC CO., LTD. CHV160 Operation Manual
70
Figure 6-19 Frequency Reaching Detection Range Diagram
Function
Code
Name
Description
setting
range
Default Value
P8.28
Droop control
0.00
10.00Hz
0.00
10.00
0.00Hz
When multiple inverters drive one same load, uneven load distribution can be caused
because of different speed, and the inverter that has bigger speed undertakes heavier load.
This parameter adjusts the frequency variation of inverter which gets speed sagging.
Function
Code
Name
Description
setting
range
Default
Value
P8.29
Boost motor validity
selection
0: No boost motor
1: Boost motor 1 valid
2: Boost motor 2 valid
3: Boost motor 1 and 2 valid
0~3
0
P8.30
Boost motor 1
START/STOP delay time
0.0
3600.0s
0.0
3600.0
5.0s
P8.31
Boost motor 2
START/STOP delay time
0.0
3600.0s
0.0
3600.0
5.0s
Above three function codes are used for achieving one inverter drive three pumps simple
water supply function. One variable frequency pump and two power frequency pumps (boost
pumps) constitute the simple constant pressure water supply system. Its correlated logic is
shown as following figure: