Daktronics Galaxy AF-3200 Series, Руководство пользователя

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Electrical Installation
3-6
Power Installation
There are two considerations for power installation: installation with ground and
neutral conductors provided and installation with only a neutral conductor provided.
For these displays, installation with ground and neutral conductors provided is used.
Installation with Ground and Neutral Conductors Provided
For this type of installation, the power cable must contain an isolated earth-ground
conductor. Under this circumstance, do not connect neutral to ground at the
disconnect or at the display. This would violate electrical codes and void the
warranty. Use a disconnect so that all hot lines and neutral can be disconnected. The
National Electrical Code requires the use of a lockable power disconnect within sight
of or at the display.
Main Disconnect
The National Electrical Code requires the use of a lockable power disconnect near
the display. Provide a lockable disconnect switch (knife switch) at the display
location so that all power lines can be completely disconnected. Use a 3-conductor
disconnect to disconnect both hot lines and the neutral. Mount the main disconnect at
or near the point of power supply connection to the display. Provide a main
disconnect for each supply circuit to the display.
You must locate the means of disconnection in a direct line-of-sight from the display
or outline lighting that it controls. This requirement provides protection by enabling
a worker to keep the disconnecting means within view while working on the display.
Exception: You may locate the disconnecting means that are capable of being
locked in the open position elsewhere.
3.6 Signal Termination from Computer to Sign
The 89mm AF-3200/3400 display is designed for quicker signal and power
connection to the display and between displays.
•
The signal will terminate to watertight enclosure, which connects to the
primary display using a quick connect cable.
•
Mounting the temperature sensor to the display structure at least one foot
away from the display is preferred – terminate it to the primary display with
a quick connect cable (
DO NOT mount the temperature sensor between
displays, or anywhere the airflow is restricted)
A separate manual is provided for explaining the connection to the signal termination
enclosure. There are seven different methods of communication; your manual will be
one of these types:
Communication Type Communication
Manual ED#
RS232 ED-14739
RS422 ED-14742
Fiber ED-14743
Radio ED-13932
Modem ED-14744
Ethernet ED-14745
Fiber Ethernet ED-14746