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SV800/SV800A User Manual 7 Detailed function description
179
less than the target pressure, after delay time set in F1-10, it will add pump. When the inverter
output drops to F1-09 within the deviation range and the feedback pressure is greater than the
target, after the delay time set in F1-11, it will decrease pump.
No.
Name
Set range
Factory default
F1-12
Contactor control delay time
0.1s
~
10.0s
0.5s
It’s the delay time between the varies frequency signal OFF and power supply signal ON.
Electrical interlock needed for external circuit between varies frequency control and power
supply control.
No.
Name
Set range
Factory default
F1-13
Automatic switching delay time
0Min
~
65535Min
0Min
It used to prevent one pump from rusting due to long-term non-operation or to better balance the
life of two pumps. The function is invalid when the default value is 0.
No.
Name
Set range
Factory default
F1-14
Sleep pressure judgment range
0.0%
~
20.0%
0.0%
For single pump control, when the feedback
pressure
≥ target pressure-F0-10-F1-14 and meets
the sleep condition, the inverter will enter sleep state. When F1-14=0, the inverter will enter
sleep state when it meets the sleep condition.
No.
Name
Set range
Factory default
F1-15
Water shortage protection
0
~
2
0
F1-16
Water shortage protection current
10%
~
150%
80%
F1-17
Wake up delay time after water shortage
protection
0min
~
3000min
60min
F1-18
Water shortage protection judgment delay
time
2.0s
~
10.0s
2.0s
0:No protection
1: With sensor water shortage protection
Water shortage signal inputs by
multi
-function terminal DI. Function 45:Water shortage signal
input, function 46:Enough water signal input.
2: Without sensor water shortage protection
When output frequency reaches the upper
limit
F0-29 and lasts the time in F1-18, if the output
current is less than F1-16* motor rated current (b1-02), it will display water shortage warning
code A.19 on the keyboard. Multi-function output terminal can also output ON signal when it
defined as water shortage protection. After the time in F1-17 , it will reset automatically and
judge again.