Battery Charging Circuit - Float Charge; Battery Discharge/Recharge Schedule; System Status Led; External Power Supply - Bosch D6412 Operation And Installation Manual

D6412/D4412
Power Supply
Investigate low battery reports immediately: If primary (AC) power is off and the discharge continues, the panel
becomes inoperative when the battery voltage drops below 10.2 VDC.
CAUTION
4.2.5

Battery Charging Circuit - Float Charge

The float voltage for the battery charging circuit is 13.5 VDC to 13.9 VDC at a maximum current of 1.4 A.
4.2.6

Battery Discharge/Recharge Schedule

Discharge Cycle
• AC Off: Command centers indicate trouble. AC Fail Report sent as programmed.
• 13.8 VDC: Charging float level
• 12.1 VDC: Low battery trouble at command centers. Low Battery Report as programmed.
• 10.2 VDC: Panel shuts down as voltage falls below 10.2 VDC
Recharge Cycle
• AC On: Panel restarts, battery charging begins, AC Restoral Report sent as programmed, AC trouble clears from
command centers.
• 13.0 VDC: Battery restoral reports sent, battery trouble clears from command centers
• 13.8 VDC: Battery float charged.
4.2.7

System Status LED

The System Status LED shows system status, including power supply status as described in Table 4. See Figure 4 for the
location of the LED on the panel.
System Status
System Normal
Battery Missing
AC Missing
Phone Ringing
Phone Line Seized (panel using phone line)
Shut Down (system voltage below 10.2 VDC)
4.3

External Power Supply

The external power supply (not supplied) is not intended to provide power to
indicating devices for burglary and fire applications.
• Burglary Applications use a UL603 Listed burglar alarm power supply
with an operating voltage range of
11.8 VDC to 12.4 VDC for Bank Safe/Vault applications (72 hrs. of
standby battery required).
• Fire Applications use a UL1481 Listed power supply operating voltage
range of 11.8 VDC to 12.4 VDC for fire applications.
45349E
LED Display
On for 50 ms; Off for 1 sec.
Off for 200 ms; On for 1 sec.
Off for 200 ms; On for 200 ms
Off for 200 ms; On for 1 sec.
Flickers for 1 sec. as each ring is detected.
On solid.
Off for 200 ms; On for 200 ms
Off for 200 ms; On for 200 ms
Off for 200 ms; On for 1 sec.

Table 4: System Status LED Description

D6412/D4412 Operation and Installation Guide
Page 20
System Status LED
Com L-2 L-3

Figure 4: System Status LED

© 2003 Bosch Security Systems