Programmable Power Outputs; Programming; Terminals 6 And 7; Fire System Power Formula - Bosch D9412GV4 Installation And System Reference Manual

D9412GV4/D7412GV4 v2.03 | Installation and System Reference Guide | 6.0 Power Outputs
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6.4

Programmable Power Outputs

6 7 8
6.4.1

Programming

The power outputs at Terminals 6, 7, and 8 are
programmed as Outputs A, B, and C. All outputs
are programmed in the Outputs section.
Outputs are assigned a output type, (Fire Bell, for
example) when they are assigned to an area.
Outputs can be assigned to one or more areas.
The Bosch Security Systems, Inc. defaults set Output
A (Terminal 6) as a Steady Alarm Bell output,
Output B (Terminal 7) as a Pulsed Fire Bell
output, and Output C (Terminal 8) as a
Verification or Reset output for smoke detectors.
The Control Panels (D9412GV4/D7412GV4 v2.03)
Program Entry Guide (P/N: F01U265459) contains
complete instructions for programming outputs.
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 35 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 outputs. Four annunciation
patterns are available: Steady, Pulsed, California
Standard, and Temporal Code 3.
Voltage Output at Terminals 6, 7, and 8
If Terminals 6, 7, and 8 do not provide the
expected output, check:

Programming for Outputs A, B, and C in
the outputs section of the program.

Bell Parameters section of the program to
confirm that the Alarm and Fire Bell
responses are programmed for the
expected duration and pattern.

Point Assignments section to confirm that
each point is programmed for the
expected local response.
6.4.2

Terminals 6 and 7

When activated, Terminals 6 (Output A) and 7
(Output B), provide positive (+) 12.0 VDC
Nominal power output. Use the power at
Terminals 6 and 7 to power bells, siren drivers,
piezoelectric fire sounders, electronic horns, or
other devices.
Bosch Security Systems, Inc. | 7/16 | F01U265457-09
Programming determines the format of the
output and the conditions that activate it. One
self-resetting circuit breaker protects Terminals
6, 7, and 8 against shorts.
When using Output A or Output B to activate
notification appliance circuits in UL Listed fire
alarm applications, install a D192G Indicating
Circuit Module.
Power Restricted for Fire and Combined Fire and
Burglary Systems: Fire systems are prohibited
from using the battery for determining alarm
power. Use the fire system power formula that
follows to calculate the current available for fire
and combined fire and burglary systems.
6.4.3

Fire System Power Formula

To calculate the current available at Terminals 6
and 7 for fire and combined fire and burglary
systems:
1. Add together the current draws for all devices
connected to Terminals 3, 8, 24, and 32, and
the accessory connector. This is the total
current required for the normal standby
condition (NSC).
2. The current available for NSC is 1.4 A.
Subtract the NSC current required calculated
in Step 1 from the NSC current available, 1.4
A. The difference is the alarm current
available for Terminals 6 and 7.
In formula format:
1.4 A  NSC current
required (Step 1)
Refer to the Approved Applications chapter of this
guide for module or accessory current
requirements.
6.4.4

Terminal 8

Terminal 8 provides continuous positive (+) 12.0
VDC Nominal power. Output C interrupts the
power at Terminal 8 when activated. Use
Terminal 8 to power smoke detectors or other
devices that are reset by interrupting power. One
self-resetting circuit breaker protects Terminals
6, 7, and 8 against shorts.
= Alarm current
available
35