INVT CHV160A Series - Page 140

C.TY TNHH TỰ ĐỘNG HÓA VIỆT TRUNG 02413.281.181-
0989.984.666
Website:www.viet-trung.com.vn Đ/c:194-Nguyễn Trãi-Võ Cường-
TP.Bắc Ninh
P8.19 CLOSE DELAY 0.1~9.9% 0.1~9.9 0.5s
P8.20 TRIP DELAY 0.1~9.9% 0.1~9.9 0.5s
It’s considered that there are mechanical delay time when contactor closes or opens,even
more there are remanence when vairale frequency pump switch to run at grid frequency
which may make the action failure. The parameters above are used to solve these
problems.
1: Before inverter enables the next available frequency pump,it will send contactor closing
command, there are time difference between command has been sent and the inverter
starts to output by reason of mechanical delay,that’s contactor closing time.
2: The contactor opening time is time defferece from the inverter outputs coast to stop
command to inverter outputs grid-frequency contactor closing command.it normally used
for which the power of pump is greater than 45kW and the variable-frequency pump
needs to be switched to run at grid frequency,It can minish switching current and improve
the success percentage of switching.
Function
Code
Name Description
0: Dormancy enabled
Setting
Range
Factory
Setting
P8.21 PID SLEEP SEL
AW OKE
1: Running at lower limit