ABB CL Series Applications Manual page 50

1SVC 440 795 M0100
Pulse shape of count signals:
the logic relay processes square wave signals.
Mark-to-space ratio of count signals:
We recommend a mark-to-space ratio of 1:1.
If this is not the case:
The minimum pulse or pause duration is 0.5 ms.
t = 0.5 x (1/f )
min max
t = minimum time of the pulse or pause duration
min
f = maximum count frequency (1 kHz)
max
L01 +
L01 –
L02 +
F1
...V 0 V 0 V
24 V H
Figure 25: Connecting high-speed counters and frequency
generators
Connecting the inputs
I1 I2 I3 I4 I5 I6
47