NOMAD
- LK4-2
O
PERATING
I
NSTRUCTIONS
P
AGE
4 of
4
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
3.2
CABLE LENGTHS
3.2.1
12V DC POWER CABLING
When fitting the link unit ensure that the voltage at the link unit is in the
range 10 to 18 V DC. Voltage drop between the power supply and the link
units will depend on the cable used and the number of link units connected
to a single power supply.
The following table gives maximum cable lengths for some common
configurations. Note that the cable length is from the power supply to the
farthest link unit for a single cable run. It would be normal practice to make
two or more cable runs from a single power supply (in different directions).
12V DC supply:
# Of Link Units
1.0mm
2
1.5mm
2
1
171
256
2
133
199
3
108
163
4
92
138
15V DC supply:
# Of Link Units
1.0mm
2
1.5mm
2
1
427
641
2
332
499
3
272
408
4
230
345
3.2.2
Network Cabling
The maximum cable length for the network cable is dictates the distance
from the controller to the farthest link unit. This is typically 1km. Note that if
the controller is centrallly placed this gives a maximum distance from one
end to the other of 2km.
