Product
Specifications
2
FEC-EDB
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JOB NAME:
JOB NUMBER:
CATALOG NUMBERS:
SPECIFICATION SUBMITTAL
Leviton Mfg. Co., Inc.
P.O. Box 2210 • Tualatin, Oregon 97062 • Phone: (503)404-5500 • Fax: (503) 404-5600
Visit our Website at: www.leviton.com
FEATURES
• Solid state electronic dimming ballast control
• Stand alone dimmer modules
• Plug-in systems dimmer modules
• Solid state dimmer design
• SCR power devices
• Energy savings
• UL Listed
CONTROL OPTI ONS
• Manual Control System
• Remote Preset System
• Designer Preset System
• Automated Control System
LOW VOLTAGE CONTROL
Basic Field Wiring Schematic
The diagrams on this page illustrate typical wiring of dimming ballasts
using two control wires between the ballasts and the controller. Any
Leviton Lighting Control Division remote controls can be used, as well
as time clock control and photocell control for automatic daylight
harvesting. As the diagram illustrates, an ON/OFF contactor or line
voltage switch is required to turn the system off since the ballasts
dimming range is down to 5%, and most applications do not want this
low light level to stay on when a room is not occupied. The line
voltage feeds through the contactor directly to all ballasts on the circuit
to power the ballasts. Dimming actually takes place within the ballast,
the low voltage control signal tells the ballast what light level is desired.
Since the control signals are low voltage (10 volts DC) and current
limited, the control wiring between the ballast and the Leviton Lighting
Control Division controller can be Class II wiring. Depending on local
electrical codes, this wiring may not need to be run in conduit.
The wiring shown is typical of the Advance Transformer Co Mark VII™,
the series of dimming ballasts. Several other ballast suppliers are
using this same control scheme.
The typical dimming ballast of this type requires about one half
milliampere of control current, allowing the Leviton Lighting Control
Division dimmers for these ballasts to typically control up to a
maximum of 100 ballasts. The on/off contactor is normally rated at
20 amperes since the typical lighting circuit is a 20 ampere circuit.
More than one dimmer can be controlled together for larger lighting
loads, to allow a whole ceiling with multiple circuits to dim uniformly
up and down.
The diagram at the top of this page shows the physical layout of a
stand alone dimmer for these ballasts. It is a surface mounted unit 12 "
x 12" x 3" deep box with a one inch mounting flange on two ends.
The systems version of this dimmer is built in single and dual
modules that fit the standard MDS dimmer cabinets shown
elsewhere in the Leviton Lighting Control Division catalog. They take
up one 4 inch dimmer space in any of the cabinets shown there.