Powering Up The Control Unit - ADT FOCUS 200 PLUS Installation And Setup Manual

FOCUS 200 PLUS Installation and Setup Guide
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Ordinarily, system operation ceases at this time and there is no further signaling to the CCC.
However, if this option is selected, it allows the control unit to continue processing and sending
signals until the battery voltage drops to the point where the battery cut-off relay operates (next
item), thereby extending normal operation for several hours, depending on the size of the battery.
The low battery condition is stored in control unit memory for subsequent printout along with the
time and date. When AC power is restored (battery voltage rises above approximately 12.3 volts), a
battery restore signal is transmitted to the CCC.
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There is a built-in battery cut-off relay that serves to protect the battery against deep discharge. If
the voltage drops to approximately 9.8 volts, the relay disconnects the battery from its load to
prevent deep discharge of the battery. At this point, all processing and transmission of signals
cease.
•
There is an automatic check for the connection of the battery leads, which is required by FM and
with the latest revision of NFPA 72. The check involves momentarily turning off the battery charge
voltage and measuring the voltage where the leads are connected to the circuit board. If the check
shows that the battery is missing for 45 seconds, the operating panel will display:
Also, a battery-lead-disconnect signal is transmitted to the CCC. A battery restore signal is transmitted
when the leads are reconnected.
Battery Charger Supervision
The system checks the battery charger every 200 seconds. If the system detects a charger fault, a signal
is sent the CCC and a trouble message is displayed at the operating panels.

Powering Up the Control Unit

After all the wiring procedures have been completed, and you are ready to power up the control unit,
perform the following steps:
Step
1
2
3
4
12-18
< ? NOTE: System
has battery
trouble
Continue >
Action
Turn the power switch on the control unit to the ON position.
Verify that the AC transformer is providing the correct voltage by measuring across
terminals 1 and 2 (17 - 19.5VAC when power line is 110 - 120VAC).
Verify that the battery float charging voltage is correct by measuring across the battery
terminals (13.5 - 13.8VDC with no battery or fully charged battery connected).
Verify that the operating panels are showing the correct display and can accept key
entries.