Velleman VMB3PS - Manual (Page 8)

Velbus manual VMB3PS– edition 1 – rev.1.0
8
Use of a common transformer with 2 x 12V secondary voltages and centre tap on different power
modules:
+
12V/1A max.
-
+
12V/1A max.
+
-
VMB3PS
-
12V
+
1A max.
+
12V 12V
- + -
12V
- H
BUS
L
VMB...
A B F D C E
AC Power
N L
To power loads
Circuit breaker
N
Prim.
12V Sec.
L
+
12V/1A max.
12V/1A max.
-
+
-
1A max.
+
VMB3PS
-
12V
+
A B
12V
+
12V
- + -
12V
-
F C D E
BUS
H L
VMB...
12V Sec.
Remark:
Do not connect a transformer with 1 x 12V secondary voltage to more than one power module!
When using a common transformer, make sure it can deliver the total current!
Connect the negative output of each power module to one another when using several power modules.