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Input connection examples
INPUT CONNECTION EXAMPLES
15-channel infrared receiver 'VM122' :
The connection diagram (Fig. 1.0) shows how
to connect relays to the interface card VM122.
The 15 outputs of VM122 are open-collector
outputs, which means they are transistors used
as switches. When an output is active, a closed
contact is created between ground (GND) and
that output.
As shown in the connection diagram, one
single power supply can be used for the re-
ceiver module as well as e.g. for the relay
switch.
Note : You can use the VM121 infrared
transmitter to control your applications.
6
VM122
Figure 1.0
VA
GND
VB
+V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
+
VCOM
Ordernr. Transformer : 112006C
VM129
AC
0
12V
RS232
IN
0
Vout
+12V
0
NO
1
1
0
NO
2
2
0
NO
3
3
0
NO
INPUT
4
4
0
NO
5
5
0
NO
6
6
0
NO
7
7
0
NO
8
8
MAINS
1 x 12V / 500mA
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