Power Outputs; Circuit Protection; Total Available Power; Continuous Power Outputs Terminals - Bosch D9412G Operations & Installation Manual

D9412G/D7412G | Operation & Installation Guide |
5.0

Power Outputs

5.1

Circuit Protection

Three Positive Temperature Coefficients (PTCs) protect
the panel from short circuits on both the continuous and
programmable power outputs. If the panel is
programmed for power supervision and short is
sustained on one of the power outputs, the panel
transmits a BATTERY LOW or BATTERY MISSING for
Bosch Security Systems Modem IIIa
Format, or TROUBLE ZN 9 for BFSK.
One PTC protects Terminal 3: Auxiliary Power and
Terminal 24: ZONEX Power. A short on one disrupts
the power to the others.
One PTC protects Terminal 6: Alarm Power Output,
Terminal 7: Alternate Alarm Power Output, and
Terminal 8: Switched Auxiliary Power. A short on one of
these terminals disrupts the power to the other two.
One PTC protects Terminal 32: Power +.
5.2

Total Available Power

The system produces up to 1.4 A of combined power at
10.2 VDC to 13.9 VDC 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.
Normally open, power on alarm.
Terminal 7 (Relay B) - Alternate Alarm Power
Output. Normally open, power on alarm.
Terminal 8 (Relay C) - Switched Auxiliary Power.
Normally open, power off on reset.
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 command
centers, the D9131A Parallel Printer Interface Module,
and the D9210B Wiegand Control Interface Module.
Accessory Connector The D928 Dual Phone Line
Switcher connects to the accessory connector.
5.3

Continuous Power Outputs Terminals

5.3. 1

Continuous Current Draw

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 over a range of
10.2 VDC to 13.9 VDC.
Bosch Security Systems | 10/03 | 43488E
5.0 Power Outputs
Power Restricted for Fire and Combined Fire/
Burglary Systems: Use the Fire System Power Formula to
calculate the current available for fire and combined
fire/burglary systems (see section 5.4 Programmable
Power Outputs Terminals).
5.4
5.4. 1
2
Communication
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 of the program.
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 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/Reset output for smoke
detectors. The D9412G/D7412G Program Entry Guide
contains complete instructions for programming relays.
Descriptions of the functional characteristics of each
terminal appear on the next page.
See 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.
Voltage Output at Terminals 6, 7, and 8: If Terminals
6, 7, and 8 do not provide the expected output:
5.4.2
Install an optional D136 Plug-in Relay into the ALT
ALARM socket to enable the output at Terminal 7.
Install a D136 in the SW AUX socket to enable the
output at Terminal 8. The relay sockets are under the
faceplate as shown in Figure 7.
Relay Installation
Power down the system before inserting the D136
Relays. The plug-in relays are shorter than the sockets
they plug into. See Figure 7. They can be installed in
either the left or right end of the socket.
Do not Rely on Relay Labelling: Do not rely on the
labelling to install D136 Relays. Check for the side with
three pins. The three pins go on the top side of the
socket.
Programmable Power Outputs
Terminals

Programming

• Check the programming for Relays A, B, and C
in the Relays section of the program.
• Check the Bell Parameters section of the program
to verify the Alarm and Fire Bell responses are
programmed for the expected duration and
pattern.
• Check the Point Assignments to verify each point is
programmed for the expected local response.

Optional Relays Required

EN | 25