Velleman VMB1RS - Manual (Page 4)

Velbus manual VMB1RS– edition 1 – rev.1.0
4
Remark:
The serial computer connection is electrically separated from the Velbus
®
and the 12V power cable through an
optical link.
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).
Connect the module to a COM port of the computer. You may use a Velleman serial cable, type CW014.
H
L
-
+
BUS
12V
VMB1RS
L H
-12V+ BUS
TWISTED
PAIR
(0.5mm ) 2
9-P
O
LE
S
U
BD
To COM-Port
Termination
If the module is connected at the start or end of a cable on the VELBUS, place the ‘TERM’ jumper.
Remove the jumper in all other cases.
If different cable wiring topologies (tree, star, loop, ...) are used, place a jumper on the end module of the longest
cable only, NOT on each end point.