Daktronics CH-1421V - Manual (Page 9)

Installation 2-3
2.4 Electrical Installation
2.4.1 Control Signal Wiring
Reference Drawings: Color Code, 25-Pin J-Box ................. Drawing A-47207
Component Numbering,CH-1421V .. DrawingA-106020
For the display, two conductors of 24 AWG are needed. For distances up to 600 ft. or
22 AWG, up to 1000 ft. are required. Daktronics has 24 AWG direct burial cable,
Daktronics part no. W-1105 with 6 conductors, and 22 AWG cable that must be
pulled through the conduit before burial, Daktronics part no. W-1077 with 2
conductors.
At the control location, mount the signal J-box to a convenient location. Route the
cables and connect to the wires leading from the connector in the cover according to
the table below and Drawing A-47207.
At the display, open the bottom hinged panel covering the entrance enclosure as
shown on Drawing A-106020. Remove the cover from the entrance enclosure. Refer
to Drawing A-47207 for an illustration of the components inside the entrance
enclosure. Connect the signal wires to TB31 as indicated in the table below.
Control End Display End
J-box Terminal No. Wire Color Output No. TB31 Terminal No.
14 Red/Wht 1* 1 (+)
15 Grn/Wht 2 (-)
*Auxiliary display(s) require(s) a different output no.(s). Consult your CHTS-300 console
manual.
2.4.2 Power Wiring
Reference Drawing: Driver Enclosure, Power & Signal...... Drawing A-37915
The CH-1318V display requires a 120/240 VAC, 30 amp circuit per line. When
equipped with 25W lamps, the maximum current draw is 33.33 amps. When
equipped with 30 W reflector lamps, the maximum current draw is 40 amps.
Route power wires into the display and connect to TB41 in the entrance enclosure, as
shown on Drawing A-37915.
Connect the ground wire to E41 and to a ground rod near the display, according to the
local codes.
2.4.3 Grounding
Reference Drawing: Power Wiring and Grounding............. Drawing A-45220
The display must be connected to an earth-ground. Proper grounding is necessary for
reliable equipment operation. It also serves to provide protection to the equipment
against damaging electrical disturbances and lightning. If the following grounding
methods are not adhered to, the warranty will be void.