Bay Alarm Vista-20Bay, Installation And Setup Manual

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VISTA-20BAY Installation & Setup Guide
13–2
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
SK6139A-BAY Keypad 100mA
5881/5882 RF Receiver 35mA
4219 Zone Expander 35mA
4204 Relay Unit 15/180mA‡
4229 Zone Expander/Relay Unit 35/180mA‡
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 23. VISTA-20BAY 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.