Daktronics Data Time Series 50 Time & Temperature Displays - Manual (Page 24)

Electrical
Installation
3-2
On a large display (36”, 48”, and 60”), the lampbank is in multiple doors. The internal
components are located under the far left door when viewed from the front.
Drawing A-57279 is an illustration of the termination panel. Drawing A-87841 shows the
controller and component access. The power connections are made on the power termination
panel located in the master unit. The signal connections are made directly to the display
controller. The controller is located in the master unit in an enclosure. The enclosure cover
must be removed.
3.2
Power Connection
Note: When power is run to the display, a disconnect switch or plug must be provided within
sight of the display. To maintain CSA listed display, use the supplied disconnect.
Refer to Drawing A-57279 and A-57319. Power is supplied to the display through the
terminal block labeled TB41. The service required for a single face display is 120 VAC.
Service for a 2V display is 120/240 VAC single phase. The display amperage is stated on the
display specification label. Follow the instructions below to connect power to the display.
1. Run power through conduit into the display through one of the knockouts provided and
route over to the termination panel.
2. Connect the white neutral wire(s) to position 2 “NEUT” on TB41.
3. Connect a 120 VAC line to position 1 “01 (120 VAC)” on TB41.
4. For a 2V display, connect the second hot line of the 120/240 VAC service to position 3,
“02 (120 VAC)” on TB41. (Do not use two lines of a 120/208 three phase Wye service).
Exceptions : For 48” and 60” models, power is run separately to each face. Both positions 1
and 3 of TB41 are needed for one face and must be connected to a 120/240 VAC single phase
service. Check the specification label on the display for amperage. Refer to Drawing A-
67341.
For a 12” 2V model, use a single 120VAC line and connect a jumper from position 1 to
position 3 on TB41.
3.3 Grounding
All power service must be supplied with an earth-ground wire. Use the following instructions
to properly ground the display:
1. Attach the ground wire to the earth ground lug in the termination panel marked with “Earth
Ground” (Drawing A-57279).
2. Attach the ground wire to a copper earth ground rod installed according to the National
Electrical Code. Do not ground to any steel columns supporting the display.