Service manual

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78
The function of sleep frequency threshold: When the system water pressure in
the scope of F3.12 (deviation limit), and the inverter operating frequency is under
the F3.16 (sleep frequency), after the F3.18 (sleep delay time), the inverter will
enter a sleep state, operating frequency will drop to 0.00HZ in order to save
energy conservation and protect motor.
Wake function: When the system is in sleep mode, When the water feedback
pressure is less than F3.17 (wake pressure ). At this time the inverter had passed
F3.19(Delayed recovery time) , Sleep out.
F3.18 Sleep delay time Range: 0.0－6000.0S 0.0
This parameter is to set delay time when entering into sleep function. Inverter
will enter the delay time of sleep state. When the system pressure at this delay
time does not meet the conditions of sleep, System does not enter the sleepin
mode.
F3.19 Revival delay time Range: 0.0－6000.0S 0.0
System in sleep mode, if the feedback pressure of system less than F3. 17 wake
pressure threshold value , the system will out of sleep after this delay time.
F3.20 Constant pressure water supply mode 1 Range: 0~3 0
0: inverter works in one-drive-two water supply mode
1: constant pressure water supply board acts in one-drive-two mode
2: constant pressure water supply board acts in one-drive-three mode
3: constant pressure water supply board acts in one-drive-four mode
F3.21
Long-distance manometer
ran
g
e
Range: 0.001－9.999 1.000
To set this parameter correspondingly to 10V or 20mA.
F3.22
Allowed offset to high limit
and lower limit Freq. when
add or reduce
p
um
p
s
Range: 0.1－100.0% 001.0
By this parameter, we defines that the inverter begins to add or reduce pumps
when output frequency falls in offset range of high limit frequency or lower limit
frequency. The inverter begins to add or reduce pumps at high limit frequency or
lower limit frequency if this parameter is set to be 0.0%.
F3.23 Pump switchover judging time Range: 0.0－999.9S 005.0
This parameter defines the judging time from output frequency up to high limit
to adding pump and the same from ouput frequency up to lower limit to reducing
pump.
F3.24
Magnetic control conductor
switchover dela
y
time
Range: 0.1－10.0S 00.5