CHAPTER 6 FUNCTIONING OF EQUIPMENT - TM-5-6350-262-14-50030

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,

paragraph 6-6.

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