Daktronics DF-1060 - Manual (Page 15)

Mechanical and Electrical 2-3
Specifications
Power
Reference Drawing:
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
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.
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 schematic 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; 16 Col Multipurpose LED Drvr .................. Drawing A-179599
Reference, Driver Enclosures ...................................... Drawing A-182708
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.
The contractor performing the electrical installation can verify ground resistance.
Technicians from Daktronics Sales and Service offices can also provide this service.
The display system must be connected to an earth electrode installed at the display.
Proper grounding is necessary for reliable equipment operation. It also protects the
equipment from damaging electrical disturbances and lightning. The display must be
properly grounded, or the warranty will be void. Refer to the schematic, Drawing
A-179599, for information on connecting the grounding wire. The driver enclosure
terminal block, the location of the grounding connector, is illustrated in Drawing A-
182708.