Velleman VM129 User Manual
Page 6
6
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.
INPUT CONNECTION EXAMPLES
Figure 1.0
0
2
0
3
1
0
4
0
5
0
6
0
7
0
8
0
+12V
0
IN
NO
6
NO
8
NO
7
5
NO
NO
4
AC
NO
2
NO
3
NO
1
IN
P
U
T
12V
1 x 12V / 500mA
MAINS
GND
VB
VA
2
1
+V
7
8
6
5
4
3
13
14
12
11
10
9
+
VCOM
15
0
INPUT
Vout
RS232
VM129
VM122
Ordernr. Transformer : 112006C