Chapter 5 Function parameter
42
supply at the same time, when the water supply pressure is greater than the pump pressure display
value and the frequency is lower than the pump reduction frequency, after the pump delay time is
reduced, the inverter performs the pump reduction operation. Afterwards if the pressure is still
high, the pump will continue to be reduced, achieving a rapid adjustment function, and it is
intended to supplement the shortcomings of the pressure instability when the water supply load of
the conventional water supply system is abrupt.
Select the pump number that the inverter starts to run. 1 corresponds to motor A and 2
corresponds to motor B. (Note: the pump number must be the inverter motor. If this parameter is
changed, the inverter will automatically set the corresponding motor as the inverter motor).
After the inverter runs E8.48 time, if the pressure is still less than this value, the inverter
reports ERR_46 fault.
Ultra-high pressure offset
Used to set the super high pressure display value in linkage(Ultra high pressure value display
=Set pressure +Ultra-high pressure offset)
Ultra high pressure value display
After the inverter runs E8.49 time, if the pressure still exceeds this value, the inverter reports
ERR_47 fault.
Select whether the sleep function is valid or invalid. The sleep and wake-up functions are
related to F7.46~F7.49. Details of the F7 group parameters.
Used to set the sleep pressure display value in linkage(Sleep pressure display value =Set
pressure +Sleep pressure offset)
Actual value of dormancy pressure
The sleep function is associated with F7.48 and F7.49. If the pressure is greater than the
actual value of the sleep pressure and the current frequency is less than or equal to the sleep
frequency (F7.48), after the sleep delay time (F7.49), the inverter enters the sleep state.
Offset under wake-up pressure
Used to link the welcome pressure display value(Wake up pressure display value =Set
pressure –Wake-up pressure offset)
Actual value of wake-up pressure
The wake-up function is associated with F7.46, F7.47. If the pressure is less than the actual
value of the wake-up pressure, and the currently calculated frequency is less than or equal to the
wake-up frequency (F7.46), after the wake-up delay time (F7.47), the inverter cancels the sleep.
status.
0: Invalid 1: Frequency conversion
2: Power frequency
0: Invalid 1: Frequency conversion
2: Power frequency
0: Invalid 1: Frequency conversion
2: Power frequency
0: Invalid 1: Frequency conversion
2: Power frequency
0: Invalid 1: Frequency conversion
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