V&T Technologies Co., Ltd.
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Chapter 6 Parameter Description
100
Temperature sensor
or analog signal
0
10V or 20mA
Low
Temperature
High
Sleeping
temperature
Operating
temperature
Setting
frequency
Output
frequency
Pb.19
Pb.20
Fig. 6
−
36 Upper and lower limit of zero frequency operation
This function supports sleeping function and energy saving operation. After running, the inverter will start
when the setting frequency
≥Pb.19. During operation, the inverter operates at zero frequency
when the
setting frequency
≤Pb.20
. Proper setting of limit value of zero operation can avoid the inverter starting
and stopping frequently. If the inverter is often used for work situations such as air condition and fan,
change the analog signal of temperature sensor to setting frequency to control automatic starting or
stopping of inverter.
This function code realized open loop control mode selection for fan and pump.
0: Basic running mode
1: Pre
−
overload decelerate frequency model
If this mode is selected, before overload, through real
−
time monitoring the load to achieve the inverter
automatically reduces the runnuing frequency in order to ensure automatically out of overload running.
That may exist automatically reduces the running frequency when using this mode.
2: Forced energy saving mode 1(square type load)
If this mode is selected, according to Pb.22 setting, the inverter automatically determines the frequency
upper limit to work in order to meet the square type load forced energy
−
saving rate requirements setting
in Pb.22.
3: Forced energy saving mode 2(cube type load)
If this mode is selected, according to Pb.22 setting, the inverter automatically determines the frequency
upper limit to work in order to meet the cube type load forced energy
−
saving rate requirements setting in
Pb.22.
Pb.19
Upper limit of zero frequency operation
0.00~300.00 Hz(0.00Hz)
Pb.20
Lower limit of zero frequency operation
0.00~300.00 Hz(0.00Hz)
Pb.21
Fan and pump control mode selection
0~3(0)
Pb.22
Forced energy saving rate reference
0~50%(0%)
