D9412GV4/D7412GV4/D7212GV4 | Installation and Operation Guide | 5.0 Power Supply
Bosch Security Systems, Inc. | 3/12 | F01U266054-01 28
Overcharge Load Shed With AC Present: If more
than 1.4 A of auxiliary current draw from the
control panel occurs, the battery supplies the
current and begins to discharge. If this situation
is not corrected, the battery continues to
discharge and at 11.8 VDC to
12.0 VDC, the keypads display Serv Low Batt.
When the battery voltage drops below 10.0 VDC,
the control panel shuts down. Remove all loads
to the control panel and disconnect AC power.
Fix the condition creating the over current. Add a
new battery and reconnect AC power.
A shorted battery condition is created either by a
shorted cell inside the battery or by a short on
Terminals 4 and 5. A shorted battery might cause
the control panel to operate in an unsafe way.
This condition generates WATCHDOG RESET
reports.
Reset the control panel by momentarily placing
the reset pin in the disable position. Refer to
Figure 4 on page 18. The red Low Battery LED
continues flashing until the control panel resets.
5.2.6 Battery Discharge and Recharge Schedule
Table 6: Battery Discharge and Recharge
Schedule
Discharge Cycle
AC Off:
AC Fail Report when AC fails, if
control panel is programmed to
report AC failure at occurrence.
13.9 VDC: Charging float level.
13.8 VDC: Charging status LED on.
12.0 VDC:
Low Battery and AC Fail Reports if
programmed. Low battery LED on.
<10.0
VDC:
Battery load shed (processing
functions continue if AC is
present).
Recharge Cycle
AC On:
Load shed relay reset; battery
charging begins; Battery Trouble
and AC Restoral Reports sent.
13.7 VDC:
Battery Restoral Reports sent. Low
battery LED off.
13.9 VDC:
Changing status LED off; battery
float charged.
To Next Page
Loading...
Need help?
General
