Daktronics Tuff Sport TN-2560, Руководство по установке

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Electrical Installation
6
3 Electrical Installation
CAUTION: Only qualified individuals should perform routing and termination to the
display� Electrical contractors are responsible for ensuring that all electrical work meets
or exceeds local and national codes� Daktronics engineering staff must approve all
changes or the warranty will be void�
Power
Only qualified individuals should complete the electrical installation; untrained personnel
should not attempt to install these displays or any of the electrical components� Improper
installation can seriously damage the equipment and be hazardous to personnel�
Single-court scoreboards feature a 120 VAC power cord with a three-prong plug. Install a
grounded receptacle nearby so that the power cord can easily reach it.
Each court section of multi-court scoreboards includes two 120 VAC power cords: 1 for
Power In, and 1 for Power Out. Install grounded receptacles for each row of scoreboards
so that the power cord of the left-most scoreboard section (when viewed from the
front) can easily reach it. Connect the Power In cords to the Power Out cords between
sections moving from right to left. Be sure to plug the whole row of scoreboards into the
power receptacle last. Note that the top-left section (HOME team score) will only have
one power cord.
Displays operating on 240 VAC are also available, and they ship equipped with a
universal power plug.
Grounding
All components of a display system – including but not limited to displays, control
equipment, and connected peripheral equipment – must be electrically grounded.
Only qualified individuals may perform electrical work, including verification of ground
resistance. Daktronics is not responsible for improper grounding or damage incurred as a
result of improper grounding.
Grounding methods must meet the provisions of all applicable local and national codes.
Inspect and verify all grounding methods meet the provisions of all applicable local and
national codes.
Proper grounding is necessary for reliable equipment operation and general electrical
safety. Failure to properly ground the display system may void the warranty, disrupt
operation, damage equipment, and cause bodily harm or death.
Lightning Protection
The use of a disconnect near the display to completely cut all current-carrying lines
significantly protects the circuits against lightning damage. Local and national electrical
codes also may require it. In order for this system to provide protection, the power must
be disconnected when the display is not in use.
The control console should also be disconnected from power and from the signal
junction box when the system is not in use. The same surges that may damage the
display components can also damage the console’s circuitry.
Power-On Self-Test (POST)
The display performs a self-test each time that power is turned on and the control
console is powered off or not connected. If the control console is connected and
powered on, the self-test does not run, and data from the control console appears on
the display after a few seconds.