Daktronics DF-1030 - Manual (Page 20)

3.3 Lightning Protection
The use of a disconnect near the display to completely cut all current-carrying lines
significantly protects the circuits against lightning damage. The National Electrical
Code also requires it. In order for this device 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 j-box when the system is not being
used. The same surges that may damage the display's driver can also damage the
driver console's circuit.
3.4 Power and Signal Connection
Reference Drawings
Multipurpose 4 Column
LED Driver II Specifications .................................. Drawing A-166216
Quick Install, DF-1030 & DF-1040
Rate Displays ........................................................ Drawing A-177150
16 Col. MASC Driver Specification.............................. Drawing A-184475
Enclosed Driver, 4 Column Reference ........................ Drawing A-184918
Electrical Specification Drawings .............................Refer to Appendix A
Route power and signal cables into the display from the side or rear. There are
7 /
8
"
knockouts for 1 /
2
" conduit fittings on the sides of all DataMaster cabinets and on the
back panels. All power and signal wiring terminates at the driver enclosure.
Refer to Drawing A-177150 for a complete review of power and signal connections
for DataMaster Rate displays. Drawings A-184918 and A-184475 illustrate and
provide connection specifications for the 4- and 16-column drivers used in all
DataMaster Rate displays. The schematics for drivers detail both the wiring in the
enclosure and external connections to the display. Power and signal connections,
illustrated in Figure 5, are similar for both drivers.
Figure 5: DataMaster Driver Enclosure with 4-Column Driver
3-4 Electrical Installation