Daktronics SW-2001, Руководство пользователя

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Electrical Installation
10
Installation with Only a Neutral Conductor Provided
Installations where no grounding conductor is provided must comply with local and
national electrical codes. If the installation meets all requirements, observe the following
guidelines:
• Connect the grounding electrode cable at the local disconnect, never at the display
driver/power enclosure.
• Use a disconnect that opens all of the ungrounded phase conductors.
Lightning Protection
The use of a disconnect near the display location to completely cut all current-carrying
lines significantly protects the circuits against lightning damage. Local and national
electrical codes may also 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 also should 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.
Installing Load Centers
Reference Drawings:
Electrical Hookup- Outdoor Display ................................................................. DWG-129998
Outdoor displays have a fully-enclosed load center that brings power and signal to
the scoreboard. The harsher environment and outdoor electrical hookup requirements
mandate the use of this component. Refer to DWG-129998 along with the instructions
below to mount the load center in the display during installation.
1� Remove the lower left panels from the lowest digit module in the display, and remove
the nuts from the three screws already installed in the cabinet.
2� If the load center cover is on, remove it. Position the load center on the back panel
screws, and complete the mounting by tightening the nuts.
3� Route the cable from the load center into the driver enclosure and connect the 5-pin
J51 jack to the mating P51 plug.
Connection
Power and signal cables are routed into the display from the rear via separate conduits.
All power and signal wiring terminates at the load center. Note that systems with radio
control typically only require signal wiring for backup purposes.
Refer to the electrical specification drawings listed in Appendix B to locate the front
access panel to the load center enclosure. Remove the screws to open the access
panel. Remove the metal cover of the load center to expose the components.
Connect the appropriate wires coming through the rear of the scoreboard to the load
center terminals, as described below and shown in Figure 5 .
• live wire (black) to LINE 1
• neutral (white) wire to NEUT�
• ground wire (green/yellow) to the grounding buss bar