Figure 26: Power At Command Centers - Bosch D9412G Operations & Installation Manual

D9412G/D7412G | Operation & Installation Guide |
Limit command centers to 610 m (2000 ft.) per run;
limit D9210B Modules to 457 m (1500 ft.) per run
(762 m [2,500 ft.] if using an external power supply),
and D9131A Modules to 305 m (1000 ft.) per run.
Extra Power Needed for More Command Centers:
The D1255 Command Center draws 104 mA when idle.
It draws 206 mA with the keys lit and the sounder
activated. Review Section 5.0 Power Outputs to determine
the total power output requirements for the system.
One or more D8132 Battery Charger/Power Supply
Modules may be added for the number of command
centers used. Figure 26 shows the D8132 powering
command centers in a stand-alone configuration.
For UL Certificated accounts, use a UL Listed auxiliary
12 VDC or 24 VDC regulated, power limited power
supply for Fire Protective Signaling Units and
Commercial/Residential Burglar Units. The D8132 is
not UL Listed as a stand-alone power supply.

Figure 26: Power at Command Centers

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10.0 Arming Devices
Control Panel and D8132 (or other power
supply) must share COMMON: Note that
Figure 26 shows the common form the
D8132 Module connected to both the
command center's common and the common
on the control panel. Any stand-alone power
supply powering any device connected to
the panel must also be connected to a
common terminal on the panel.
If using the Ground Fault Detect capability
on the D9412G/D7412G Control Panels
and an external power supply, make sure the
external selected power supply isolates its
Earth Ground connection form the negative
side of the Aux Power output. External power
supplies not isolating Earth Ground cause
ground fault conditions on the control panel.
2
3
1 - To panel
2 - +12 VDC
3 - Data
4 - Common
5 - D8132 or external power supply
5
2
3
4
4
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