Pulse Width Modulation - Calculation - ABB i-bus KNX Product Manual

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ABB i-bus KNX
Planning and application
Pulse width modulation – calculation
4.3.3.3
With pulse width modulation, control is implemented by a variable mark-space ratio.
During the time t
On account of t
continuous control.
the valve is opened and during the time t
ON
the valve is set to about 40 % on. t
= 0.4 x t
ON CYC
it is closed.
OFF
is the so-called PWM cycle time for
CYC
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