WITA go.tec 40 Serie Original Einbau- Und Betriebsanleitung Seite 42

Translation of the original installation
and operating instructions
The PWm control signal is a digital signal in which the speed information is contained in the pulse
width. The control signal must meet the following requirements.
example of a 40% PWm signal:
t = 0.4ms
PWm % = 100 * t / T
PWm % = 100 * 0,4 / 1 = 40 %
Frequencies between 100 Hz and 5000 Hz are permissible for T.
Permissible input current IH = : 3.5 - 10mA
Voltage level of the input signal uiH: 3V - 24V
Voltage level for low level uil < 0.7V
rise time, fall time of the signal ≤ T/1000
PWM = t_on/T
U
iH
42
WITA go.tec 40-XX
T = 1ms (1kHz)
t_on
U
iL
Rise time
| 60-XX | 70-XX | 80-XX
T
90%
50%
10%
Fall time
U
iH
U
iL