ADEMCO Security System VISTA-15CN Guia de Configuração descarregar pdf (Página 54)

VISTA-15/VISTA-15CN Installation and Setup Guide

12–2

Calculating the Battery Size Needed

Determine the total device current draw after filling in the Auxiliary Device Current Draw

Worksheet that follows. To this figure add the 100mA that is drawn by the control panel

itself. Then, to determine the battery size needed, use the following formula:

Total Current Drawn* x Number of hours standby wanted = Battery Ampere/Hours.

* Convert mA figure to decimal Amps (see example).

Example: If total auxiliary device current drain is 450mA, add 100mA for the control panel,

for a total of 550mA (0.55 amps); if 24-hour standby is wanted, the calculation is:

0.55A x 24 hours = 13.2 Ampere/Hour battery needed

In this example, two 7 Amp/Hr batteries (connected in parallel) must be used.

Table 1. AUXILIARY DEVICE CURRENT DRAW WORKSHEET

DEVICE CURRENT # UNITS TOTAL CURRENT

6128 Keypad 30mA

6139 Keypad 100mA

5881/5882 RF Receiver 35mA

4219 Zone Expander 35mA

4204 Relay Unit 15/180mA

‡

4229 Zone Expander/Relay Unit 35/100mA

‡

4285 VIP Module 160mA

4286 VIP Module 300mA

TOTAL =

Current available from Aux. terminals = 600mA max (500mA max for UL installations)**

* If you are using hardwire devices such as PIRs, refer to the specifications for that particular unit's

current draw.

** In UL installations, maximum current draw from the Auxiliary Output and the Alarm Output

combined

must not exceed 600mA.

‡

Figures are for relays de-energized (OFF)/relays energized (ON).

Making the Battery Connections

1. Use the battery standby formula (above) to select the appropriate battery for the

installation.

Do not connect the battery until all devices have been wired to the control.

2. Attach the red and black wires on the battery connector cable as follows:

• Red to the positive (+) battery tab on the control board

• Black

to the negative (

–

) battery tab on

the

control board.

Refer to

Figure 22. VISTA-15/VISTA-15CN Summary of Connections

(SOC) diagram for

location of the (+) and (–) battery tabs on the control board.

3. Attach the red and black wires at the other end of the battery connector cable as follows:

•

Red to the positive (+) terminal on the battery

•

Black to the negative (–) terminal on the battery.

Battery Tests

The battery is periodically tested automatically (approximately every four hours), and if it

cannot sustain a load, a LOW BATTERY message is displayed and, if so programmed, is

reported to the Central Station. In addition, the connection to the battery is checked every 3

minutes (a CSFM requirement). If there is no battery detected, or a low-battery condition is

detected, a LOW BATTERY message is displayed and a report is sent to the Central Station.

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