Daktronics TI-2022, Display Manual

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Electrical Installation
6
3 Electrical Installation
Power
The TI-2022 contains internal batteries for power but can receive external power through
a detachable transformer cord ( Figure 6 ).
120 or
240 VAC
Power Supply Kit:
120 VAC (0A-1240-0071)
240 VAC (0A-1240-0072)
12 V IN
Figure 6: Transformer Connection
The primary purpose of the transformer is to charge the internal battery, but the display
can still be operated while the battery is charging. The transformer and cord can remain
plugged into the power source indefinitely with no damage to the timer or its battery.
The indoor version (TI-2022-13) has one battery, while the outdoor version (TI-2022-11)
has two batteries. On a full charge, each battery should last approximately 10 hours
before recharge is necessary. To recharge the system, simply plug the power cable into
a grounded power receptacle. The recharging unit will not overcharge the batteries.
Indicator lights on the side control panel show when the unit is charging and when it is
fully charged (refer to Figure 11 ).
Auto Off
The TI-2022 features an Auto Off function, which will automatically turn the unit off in
response to two conditions:
1� Idle Timeout – If the display is not plugged into a transformer, and not in program
8 or 9 (time of day), and has been idle for 1 hour (not counting, no switch activity,
no signal input), the display will sound the horn and flash the digits 10 times before
turning itself off. Pressing any switch will reset the one hour timer.
2� Low Battery – This feature prevents the TI-2022 from running its battery completely
dead and damaging the battery. When the battery has dropped below a minimum
level, the unit will begin sounding the horn once per second as a warning. If the unit is
not plugged into the transformer for recharging within about one minute, the unit will
automatically turn off.
To turn the TI-2022 back on after an Auto Off has occurred, turn the power switch off,
wait a few minutes, and then turn it back on. In the case of a low battery, be sure to plug
the display into a charger before continuing use.