Riello NexPro 300 Plus Solar MR 11 Instruction Manual page 15

pWm input signal
The pump will not start with a low input signal value (<5
% PWM). The pump stops if the PWM input signal falls to
5-8%. The pump stops for safety reasons in the absence
of a PWM signal. If the pump receives no input, for exam-
ple because of a broken cable, it stops to prevent the
solar circuit overheating.
Max.
0 5 10 20 30 40
PWM input signal (%)
electronic control circuit
Opto-isolator
PWM output
Reference signal
PWM input
50 60 70 80 90 100
technical specifications
maximum power
PWM input frequency
Consumption in standby
Input signal high voltage
level
Input signal low voltage
level
Input signal current inten-
sity
Input duty cycle
15
symbol Value
f 100-4000
Hz
< 1 W
UiH 4-24 V
UiL < 1 V
IiH < 10 mA
PWM 0-100%