BPD series PV pumping inverter    Function parameters 
37 
Vmpp voltage 
keypad 
reference 
0.0–6553.5V DC 
If P15.01 is 0, the reference voltage is given by 
P15.02. (During test, reference voltage should be 
lower than PV input voltage; otherwise, the system 
will run at lower limit of frequency) 
0.0–100.0% (100.0% corresponds to P15.02) 
If the ratio percentage of real voltage to reference 
voltage, which is abs (bus voltage-reference 
voltage)*100.0%/ reference voltage. If the value 
exceeds the deviation limit of P15.03, PI 
adjustment is available, otherwise, there is no PI 
adjustment and the value is defaulted to be 0.0% 
abs: the absolute value   
Upper 
frequency limit 
of PI output 
P15.05–100.0%(100.0% corresponds to P00.03) 
P15.04  is  used  to  limit  the  Max.  value  of  target 
frequency, 100.0% corresponds to P00.03. 
After  PI  adjustment,  the  target  frequency  cannot 
exceed the upper limit. 
Lower 
frequency limit 
of PI output 
0.0%–P15.04(100.0% corresponds to P00.03) 
P15.05  is  used  to  limit  the  Min.  value  of  target 
frequency, 100.0% corresponds to P00.03. 
After  PI  adjustment,  the  target  frequency  cannot 
exceed the lower limit. 
0.00–100.00 
The proportion coefficient 1 of the target frequency 
The bigger the value is, the stronger the effect and 
faster the adjustment is. 
0.00–100.00 
The integral coefficient 1 of the target frequency