
Velbus manual VMB6IN– edition 1 – rev.1.0
4
CONNECTION
For connection between the modules, use twisted pair cable (ex. EIB 2x2x0.8mm2, UTP 8x0.51mm - CAT5 or
other). Use minimum 0.5mm² cable. For long wiring (>50m) or if a lot of modules ( > 10) are connected to one
wire, use 1mm² cable. Connect the 12-18Vdc (mind the polarity) and connect the bus wires (mind the polarity).
Make sure the contacts to be connected are not live and are not connected to the mains.
These contacts may be placed on a long distance from the module.
Connect the contacts between the PB and the COM input.
L H
PB
PB
BUS
VMB6IN
L
H
12V SUPPLY
BUS
TWISTED
PAIR
(0.5mm )
2
+
12V
-
+
-
ADDR
COM
PB1
PB2PB3 PB4
PB5 PB6
External contacts