Instructions / Assembly

EZ-MAX Plus Installation Guide Page B-1
Appendix B
Power Considerations for Control
Systems
The control system should be carefully planned to take these important issues into
consideration:
• Power Supply for connected devices.
• Wire Size for Power Runs.
On systems where full factory drawings have been provided, our Applications
Engineering department has already managed these calculations for you so you only
need to follow the instructions on the system drawings. However, on any installation
where factory drawings were not provided, the information contained within this
guide must be followed to ensure that all of your devices operate properly and
without failures or complete in-operability.
Terminology
Please review these definitions that are used throughout this section:
• Power Supply or Supply: references a device that supplies power to other
devices.
• Power Control Device (PCD): refers to a device that controls power. The
EZ-MAX Plus relay panel is an example of a devices in the Leviton product line
that controls power. PCD’s supply a certain amount of power to connected low
voltage control devices.
• Control Devices or Low Voltage Control Devices or Device: these terms all
refer to control devices that connect to a Power Control Device (PCD). These
devices could be simple low voltage switches, Occupancy Sensors, or D8000
control stations.
• Luma-Net: is one of our network lighting control protocols. Luma-Net is an
RS-485- based control protocol used by EZ-MAX PLus Digital Control Stations,
D8000 and D4200 control devices. Many of our PCD (Power Control Device)
products have a direct data connection for a Luma-Net device. All Luma-Net
Control Devices require power in one form or another. This power generally
accompanies the data wires.
• Unit Load: one (1) Unit load is defined as 25mA, or 0.025A. It is an arbitrary
definition by Leviton and was created to simplify power calculations.
This section of the document contains information that
applies to many Leviton products and is not necessarily
limited to the product that is primarily included in this
manual. There may be information in this chapter which is
not relevant to your particular installation. If you have
questions about ANY information contained in this manual,
please immediately contact our Technical Services
Department prior to proceeding with installation.