Daktronics DF-1020 - Manual (Page 23)

Mechanical and 3-3
Electrical Installation
Note: Only qualified individuals should perform power routing and termination
to the display. It is the responsibility of the electrical contractor to ensure that
all electrical work meets or exceeds local and national codes.
Power
Reference Drawings:
Schematic; Multipurpose 4 Col. LED Drvr.............Drawing A-165028
Schematic; Gen III Outdoor LED,
8 Column Drvr.................................................Drawing A-177935
Schematic; 16 Col Multipurpose LED Drvr............Drawing A-179599
Daktronics DataMaster displays have been designed for easy access to components,
and the power and control signal hookup has been simplified. Front panels are
removable or hinged to allow access to the digits, cabling, and other electronic
components.
Correct power installation is imperative for proper display operation. The
subsections that follow give details of display power installation. Only qualified
individuals should attempt to complete the electrical installation; untrained personnel
should not attempt to install these displays or any of the electrical components.
Improper installation could result in serious damage to the equipment and could be
hazardous to personnel.
The DataMaster outdoor displays require a dedicated, 120 V circuit for incoming
power. The display itself has no breakers or fuses.
WARNING: It is critical that the display circuit be fused at 15 A, and that all
conductors used must be designed to pass a 15 A current in normal operation.
Failure to meet wiring and overcurrent protection device requirements is a
violation of the National Electrical Code
®
and will void the display warranty.
Refer to the DataMaster display schematics listed above and to the chart in Section 2
to determine circuit specifications and maximum power requirements for the models
described in this manual.
Grounding
Reference Drawings:
Schematic; Multipurpose 4 Col. LED Drvr.............Drawing A-165028
Schematic; 16 Col Multipurpose LED Drvr............Drawing A-179599
Enclosed Driver, 4 Column Reference..................Drawing A-184918
Schematic; Gen III Outdoor LED,
8 Column Drvr.................................................Drawing A-177935
Displays MUST be grounded according to the provisions outlined in Article 250
of the National Electrical Code and according to the specifications in this
manual. Daktronics recommends a resistance-to-ground of 10 ohms or less.