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Table 5-1. Preventive Maintenance Checks and Services
Up
TM-5-6350-262-14-5 Control Unit Alarm Set C-9412( )/FSS-9 (V) (6350-228-2735) Manual
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Emergency Power Supply
TM 5-6350-262-14/5
NAVELEX 0967-466-9051
TO 31S9-4-38-1 Chg 1
CHAPTER 6
FUNCTIONING OF EQUIPMENT
circuitry. The ac presence module output signal is connected
6-1. Scope
to terminal board S-3 and -3R.  Under normal conditions
a.  This chapter contains a description of the control unit
when ac power is supplied to the control unit, the ac presence
operation keyed to the functional schematic diagram shown in
module output signal is a low impedence of 0 to 2000 ohms.
figure FO-1.  The schematic diagram and text provide an
Loss of ac power to the control unit for 3 seconds will result in
explanation of signal flow through the control unit and supply
an output alarm signal of 100,000 ohms or greater. When ac
input/output data for each nonreparable module in keeping
power is restored, the output alarm signal resets automatically
with the maintenance concept. Relay diagrams are illustrated
to the no-alarm state.
within applicable module blocks in order to adequately
describe signal flow due to various operating conditions.
(2) Plus 5 Volts DC. Regulated + 5 volts dc (4.75 to
5.25 V dc) is distributed to connector pins J8-10, J9-1I 1, J10-
b.  The control unit circuit and functional descriptions are
5, and JI 1-6 in the status processor primarily for integrated
presented in the following sequence:
circuitry operation.  The 5 volt supply is also connected to
terminal board L2-4 for use during control unit testing to
(1) Primary power supply, paragraph 6-2.
inhibit Audible Alarm BZ-204 ( )/FSS-9 (V).
(2) Emergency power supply, paragraph 6-3.
(3) Plus 20 volts dc. The control unit power supply
furnishes regulated 20 volts (19 to 21 V dc) at I ampere for
(3) Duress alarm circuit, paragraph 6-4.
internal circuitry and for external use. The power supply is
protected from an overload condition on the 20-volt output line
(4) Intrusion alarm circuit, paragraph 6-5.
by fuse F2. This voltage is fed directly to connector pins JI-
10, J2-10, J3-10, J4-10, J5-10, J6-10, J7-10, J8-9, J9-17,
(5)  Duress
and
intrusion
alarm
identification,
J10-17, and Jll-17 in the status processor for transistor,
integrated circuit, and relay operation. Relay A I OK4 remains
operated as long as POWER switch S 1 is at ON and either
(6) Tamper/dc voltage alarm circuit, paragraph 6-7.
the power supply or the battery is supplying dc power. All
instantaneous, latched, and audible alarm signals are routed
(7) Access command, paragraph 6-8.
through the contacts of relay AIOK4.  In the event of a
complete power loss, relay AlOK4 will restore and cause an
(8) Secure/access alarm, paragraph 6-9.
alarm output on the following terminals: Instantaneous alarm,
SI-I to -IR; latched alarm, SI-D to -DR; and audible alarm L2-1
6-2. Primary Power Supply
to -2.  These output signals will continue until power is
restored.  The 20-volt supply is also applied to terminal
a.  The control unit requires a 115 volt ac 60-Hz external
boards A through F, terminal 4, to provide a source of power
power source for operation. The power supply will sustain
for system sensors, and to terminal board S-5 for input into
proper operation throughout input power variations from 110
Data Transmitter T-1 257( )/FSS-9(V) (fig 1-2).
to 125 volts and 48 to 62 Hz. External power is connected to
the control unit at TB 1-1 and -2 and applied to the power
(4) Plus 27.5 volts dc. The control unit power supply
supply through POWER switch S1 and fuse F 1. Switched I
+27.5-volt dc output is an unregulated supply operating
15 volts ac is fed to terminal board LI-I and -2 for output to
between approximately 26.5 and 30 volts dc.
Audible Alarm BZ-204 ( )/FSS-9 (V).
The voltage is used upon demand by a battery charger (para
b. The power supply provides the following output voltages:
6-3, b), an integral part of the power supply, to maintain the
emergency power supply battery at full charge and as an
(1) 6.3 volts ac. This output voltage is applied to AC
access command signal (para 6-8) to system sensors.
POWER indicator DS 1 and to an ac presence module within
the power supply. Plus 20 volts dc and +5 volts dc are also
fed to the ac presence module for powering timing and relay
6-1
Change 1
.

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