User Guide
Leviton D4200 LCD Ver 2.0 Architectural Lighting Controller Page 3 of 80
Installation
Plan the System:
The system should be carefully planned out to take into consideration
these important issues:
• Power Supply for Control Stations
• Wire Size for Power Runs
On most systems, our applications engineering department has
already managed these calculations for you so this information should
be irrelevant. However, if this is not the case, like an ASAP (Quick
Ship) program, when adding on to a system or planning for a
remodel, you will want to take this information into consideration.
Power Requirements & Maximum Run Length
Each device on a Luma-Net network has a different load (draw) and
each source of power can support a different total load (supply.) To
determine the total capacity of your network, first determine the
maximum supply current of your power source, convert that to Unit
Loads, then determine the total load it can handle by summing the
load of each device.
One Unit Load = 25mA
Figure 1 - Load Rating Verification Formula
Control Station A Unit Load
X
Quantity of Station A's attached
+
Same formula
for any other attached
control Station
Control Station B Unit Load
X
Quantity of Station B's attached
<
+
Power Supply's
Available Unit Load
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