Daktronics AF-3080-68-R,A - Manual (Page 29)

1. Locate the two hex head latch holes in the module. With a 1/8" hex-wrench,
apply pressure to the latch and turn each a quarter-turn. One will turn
clockwise and the counter-clockwise.
2. Route power to the display through a fused disconnect switch capable of
opening all ungrounded power conductors. Locate this disconnect within
the line-of-sight of any personnel performing maintenance on the display. If
the disconnect is located out of sight of the display, it must be capable of
being locked in the open position.
3. Power conductors from the disconnect to the display must route through
conduit in agreement with local codes.
4. You may also route the signal cable from the control computer to the sign at
this time. Run the power and signal cables in a separate conduit.
3.6 Power
Reference Drawings:
Power Specs, Amber, 8-24x48-112 Displays...............Drawing A-163306
Power Specs, Red, 8-24x48-112 .................................Drawing A-163751
Schematic, Power Supply Configurations ....................Drawing A-163951
Schematic, AF-3080-8x***-Mono .................................Drawing B-164924
Schematic, AF-3080-16x***-Mono ...............................Drawing B-164926
Schematic, AF-3080-24x***-Mono ...............................Drawing C-165267
Schematic, AF-3080-32x***-Mono ...............................Drawing C-189404
Refer to drawings for voltage and current requirements for your sign size. Each uses
a 120/240VAC single-phase or 120/208 three-phase power source.
Do not connect the signs to any voltage other than that listed on the Daktronics
product label.
Proper power installation is imperative for proper display operation. The following
sub-sections give details of display power installation. Electrical installations must
be performed by qualified personnel. Unqualified personnel should not attempt to
install the electrical equipment. Serious danger to equipment and personnel could
occur if equipment is improperly installed.
Grounding
Displays must be grounded according to the provisions outlined in Article 250 of the
National Electrical Code
®
. Daktronics recommends a resistance to ground of 10
ohms or less. Verification of ground resistance can be performed by the electrical
contractor who is performing the electrical installation. Daktronics Sales and Service
personnel can also perform this service.
The display system must be connected to earth-ground. 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.
Electrical Installation
3-5