Bosch D7412GV4 - 6 Power Outputs; Circuit Protection; Total Available Power; Continuous Power Outputs

D9412GV4/D7412GV4 v2.03 | Installation and System Reference Guide | 6.0 Power Outputs
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Bosch Security Systems, Inc. | 7/16 | F01U265457-09 34
6.0 Power Outputs
6.1 Circuit Protection
Three self-resetting circuit breakers protect the
control panel from short circuits on the
continuous and programmable power outputs. If
the control panel is programmed for power
supervision and a short circuit occurs on one of
the power outputs, the control panel sends
BATTERY LOW and BATTERY MISSING when
using Bosch Security Systems, Inc. Modem4
communicator format. Under the same conditions
when using Contact ID communicator format, the
control panel sends Control Panel Battery Low
(302) and Control Panel Battery Missing (311).
One self-resetting circuit breaker protects:
 Terminal 3: Auxiliary Power
 Terminal 24: Zonex Power
A short circuit on one terminal
disrupts power to the other terminal.
Another self-resetting circuit breaker protects:
 Terminal 6: Alarm Power Output
 Terminal 7: Alternate Alarm Power Output
 Terminal 8: Switched Auxiliary Power.
A short circuit on one of the terminals
disrupts power to the other two
terminals.
The third self-resetting circuit breaker protects
Terminal 32: Power +.
UL requires any device powered from
a power output to be supervised.
UL requires that power outputs are
not shared between fire and non-fire
devices unless all devices are in
conduit within 20 ft and are in the
same room.
6.2 Total Available Power
The system produces up to 1.4 A of combined
power at 12.0 VDC nominal for special
application use. The outputs listed below share
the available power. These outputs are shown as
red circles on the faceplate.
Auxiliary Power: Use this terminal to power
devices requiring continuous power.
(Output A) - Alarm Power Output:
Programmable output normally open, power on
alarm.
(Output B) - Alternate Alarm Power
Output: Programmable output normally open,
power on alarm.
(Output C) - Switched Auxiliary Power:
Programmable output normally closed, switches
power off when the Sensor Reset command is
executed.
Zonex Power: Use this terminal to power
Zonex modules such as the D8125, D8128D, and
D8129 Modules.
SDI Power +: Use this terminal to power
serial device interface (SDI) devices such as
keypads, or the D9210C Access Control Interface
Modules.
SDI2 Power +: Use this terminal to power
serial device interface (SDI2) devices such as the
B208, the B308, the B450, the B426/B420, B810,
B915, B920, B921C, B930, B942/B942W and/or
B820.
Accessory Connector: The D928 Dual Phone
Line Switcher connects to the accessory
connector.
6.3 Continuous Power Outputs
The continuous current draw for powered devices
connected to Terminals 3, 24, 32, and 36, and the
accessory connector must not exceed 1.4 A.
Devices powered from these outputs operate at
12.0 VDC Nominal.
Power Restricted for Fire and Combined Fire
and Burglary Systems: Use the Fire System
Power Formula to calculate the current available
for fire and combined fire and burglary systems
(refer to Section 6.4 Programmable Power
Outputs).
3
6
7
8
24
32
36
3 24 32 36