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pwm FUnctiOn
this function allows you to control the speed of the pump using an external cont-
roller . damit die externe Steuerung angeschlossen werden kann, besitzt die Pum-
pe eine 2 polige Steuerleitung . there is no need to note the polarity of the lead .
you can choose from two different PWM operating modes . to switch on, press and
hold the button until the three yellow Leds flash (approx . 13 sec .) .
One yellow Led will flash after approx . 3 seconds . after a further approx .
5 seconds, the green Leds will illuminate as a chase . after a further approx .
5 seconds, the yellow Leds will flash . if the button is now released, the first green
Led will flash (mode 1) . By briefly pressing the button, you can now switch bet-
ween the two PWM modes . to exit PWM mode, press and hold the button for
approx . 13-20 seconds .
the necessary PWM signal must correspond with the following requirements:
example of an 40 % PWM Signal
t = 1 ms (1 kHz)
t = 0,4 ms
pWM % = 100 * t / t
pWM % = 100 * 0,4 / 1 = 40 %
Frequencies between 100 hz and 1 khz are permitted for t .
40 eveneS heatinG PUMP he-ht
4,5-15 v
≤1 v
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