Power Outputs; Circuit Protection; Total Available Power; Continuous Power Output Terminals 3, 8, And 32 - Bosch D7212GV3 Operation And Installation Manual

D7212GV3 | Operation and Installation Guide | 6.0

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. Modem IIIa
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 terminals.
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 all powered devices. The
outputs listed below share the available power. These
outputs are shown as red circles on the faceplate.
Terminal 3 - Auxiliary Power: Use this terminal to
power devices requiring continuous power.
Terminal 6 (Relay A) - Alarm Power Output:
Programmable relay normally open, power on alarm.
Terminal 7 (Relay B) - Alternate Alarm Power
Output: Programmable relay normally open, power
on alarm.
24
Power Outputs
Terminal 8 (Relay C) - Switched Auxiliary Power:
Programmable relay normally closed, switches power
off when the Sensor Reset command is executed.
Terminal 24 - Zonex Power: Use this terminal to
power Zonex modules such as the D8125, D8128D,
and D8129 Modules.
Terminal 32 - Power +: Use this terminal to power
serial device interface (SDI) devices such as keypads,
the D9131A Parallel Printer Interface Module, and the
D9210B Wiegand Control Interface Module.
2
6.3 Continuous Power Output
Terminals 3, 8, and 32
The continuous current draw for powered devices
connected to Terminals 3, 8, 24, and 32, and the
accessory connector must not exceed 1.4 A. Devices
powered from these outputs must 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 Output Terminals 6, 7, and
8).
6.4 Programmable Power Output
Terminals 6, 7, and 8
6.4.1

Programming

The power outputs at Terminals 6, 7, and 8 are
programmed as Relays A, B, and C. All relays are
programmed in the Relays section.
Relays are assigned a relay type, (Fire Bell, for
example) when they are assigned to an area. Relays
can be assigned to one or more areas.
The Bosch Security Systems, Inc. defaults set Relay
A (Terminal 6) as a Steady Alarm Bell output, Relay B
(Terminal 7) as a Pulsed Fire Bell output, and Relay C
(Terminal 8) as a Verification or Reset output for
smoke detectors. The D7212GV3 Program Entry
Guide (P/N: F01U170808) contains complete
instructions for programming relays. Refer to Sections
6.4.2 Terminals 6 and 7, 6.4.3 Fire System Power
Formula, and 6.4.4 Terminal 8 on page 25 for
descriptions of the functions of each terminal.
Refer to the Bell Parameters section of the program to
set the Fire Bell, Alarm Bell output responses for
relays. Four annunciation patterns are available:
Steady, Pulsed, California Standard, and Temporal
Code 3.
Bosch Security Systems, Inc. | 10/10 | F01U143079-03