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2016-01
Speed setting via control
voltage or PWM signal
– The control variable is a PWM signal or analog control voltage.
Speed setting via PWM type P
– Standard PWM signal in two versions
a) PWM frequency, mainly 1 ... 10 kHz (0-100%),
Open-collector input
b) Four-wire interface according to Intel specifications for 12 VDC
fans, PWM frequency 25 kHz, incl. speed signal /2
Speed setting via analog control voltage type A
– Standard control range 0 ... 10 V
– Optional with potentiometer
Typical input resistance > 10 k
Internal reference = + 5 V
R1 typical 4.7...10 k
R2 typical 100 k
Standard P / A curve Optionally available with selectable
P / A speed curve
InformationDC axial fansDC fans - specialsACmaxx / EC fansAC axial fansAccessoriesRepresentatives DC centrifugal fansAC centrifugal fans
internal ref.
internal ref.
