Datasheet

Application information CLT3-4B
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The CLT3-4 and the 24 V bus power supply have the same ground COM = GND. The
reverse polarity of the power supply will shutdown the device. And the power supply resistor
R
C
will limit the default current protecting the power supply pin V
C
. Its dissipation will be less
than 0.2 W.
Then, the whole module supply voltage rating is extended to from 0 to 30 V to -30 to +30 V.
2.3 EMC considerations
Figure 9 gives a typical application diagram where output capacitors are used to increase
CLT device immunity against fast transient bursts.
Figure 11 gives the printed circuit board layout associated with this schematic.
Refer to AN2527 for EMC considerations.
Figure 9. Robust application diagram
R
I
24V
SUPPLY
R
I
R
I
R
I
R
C
V
IN
V
I
V
CC
V
C
COM
COM
IN
1
ESD
12
IN
2
OUT
1
OUT
2
OUT
4
OUT
3
COM
34
ESD
34
COM
COM
IN
3
IN
4
COM
12
V
C
ESD
C
COM
COM
1
V
I
1
12
2
1
2
3
12
C
C
1
12
2
1
2
3
12
C
C
2 wires sensor
3 wires sensor
Contact switch
2 wires sensor