10
Electrical Installation
The disconnect mechanism must be located in direct line of sight from the display it controls. This allows
workers to keep the disconnect mechanism in view while performing display maintenance.
Power disconnects capable of locking in the open position may be located in an out-of-sight location.
The customer or contractor is responsible for conduit and wire unless stated otherwise on the
contract-specific documentation.
Power Termination at the Termination Panel(s)
All power routing and termination must comply with local and national codes and standards. Display
grounding must agree with local and national codes and standards.
When terminating power at the termination panel, the individual power phases must balance as evenly as
possible. Current draw per line, as noted on the contract specific system riser diagram, is stated as the high
leg current draw.
Refer to Power Entrance, Field Termination Detail
Drawing B-1128366
in
Appendix A
for power
termination information.
3.6 Display Wiring
Reference Drawings:
Layout & Block Diagram
...................................................................................................
Contract Specific
Power/Signal Diagram ......................................................................................................
Contract Specific
3.7 Display Continuity Check
Before turning on power to the display, perform a continuity check to ensure no short circuits occurred due to
shipping vibration.
Caution:
Before performing these steps, ensure all breakers are off.
1.
Locate the term panel. Refer to
Figure 14
.
2.
Use an ohmmeter and place one probe on the neutral terminal and
another probe to each of the taps on the breaker wire terminal. Repeat the
same test for each breaker.
3.
Place one probe to the earth ground and one to each of the breaker wire
terminals and repeat for each breaker.
All tests should result in a reading of infinity or indicate an open circuit.
3.8 Display Power Up
1.
Turn on the main disconnect to power up the display and verify the circuit breakers inside the
display are also switched on.
2.
Power up the control system to ensure it is fully operational before proceeding.
3.
Run an initialization/power up script or animation/logo on the display.
Figure 14:
Term Panel
Summary of Contents for DAKT-0204-02
Page 10: ...6 Cabinet Installation...
Page 28: ...24 Maintenance Troubleshooting...
Page 32: ......
Page 34: ......
Page 36: ......
Page 41: ......
Page 61: ......
