Daktronics DF-12xx - Manual (Page 25)

Electrical Installation 3-5
To gain access to the driver enclosure, open the access door and remove the cover
from the enclosure. Refer to the Electrical Specifications Drawings for the access
location for your sign. For smaller digit displays, access to the interior components is
gained by removing the screws from the hinged door. In the larger digit displays,
there are door latches that allow access to the interior components by removing the
digits.
Refer to Drawing A-189768 for a complete review of power and signal connections
for Gasoline Price displays. Drawings A-184918, A-167237 and A-184475 illustrate
and provide connection specifications for the different drivers used in DataMaster
Gas Price displays. The power and signal connections, illustrated in
Figure 5 , are
similar for all three drivers.
Current Loop (Direct)
Reference Drawings:
Riser Diagram, Outdoor Wire Control..........................Drawing A-164988
Riser Diagram, Indoor Wire Control.............................Drawing A-175342
Enclosed Driver, 4 Column ..........................................Drawing A-184918
Quick Install, DF-1020 Gas Price Displays..................Drawing A-189768
A direct controlled display uses a current loop connection from the j-box at the base
of the display to the driver enclosure in the sign. All the power and signal wiring
terminate at the driver enclosure. The DataMaster hand-held controller receives its
power from the display. The display layout is shown in
Figure 6 and Drawing A-
164988.
Figure 6: Direct, Current Loop Layout