D6412/D4412 Operation and Installation Guide
Page 46 © 2003 Bosch Security Systems45349E
D6412/D4412
11.2.2 Command Center Installation
Consult the command center Installation Guide for installation and mounting instructions. Command centers connect to
the panel in parallel as shown in Figure 32.
Back of Command Center
D6412/D4412 PC
Y
G
B
R
Red
Yellow
Green
Black
Red
Yellow
Green
Black
Figure 32: Wiring Command Centers to the D6412/D4412
Refer to Table 17 for panel SDI Bus to command center wiring length requirements.
#22 AWG (0.8 mm) #18 AWG (1.2 mm)
D6421/D4412 to D621/D623 305 m (1000 ft.) 610 m (2000 ft.)
D6412/D4412 to D625* 69 m (225 ft.) 183 m (600 ft.)
D6412/D4412 to D621/D623/D625 using an External Power Supply 505 m (1000 ft.) 610 m (2000 ft.)
* Due to higher current requirements for the D625 Vacuum Fluorescent Command Center, the wire lengths shown in this
table must be used when wiring it from the control panel.
Table 17: Command Center Wire Lengths
If an external power supply is used, follow the lengths as shown in Table 17.
Review Section 5.0 Power Outputs to determine the total power output requirements for your system. You may need to add
one or more External Power Supply Modules for the number of command centers you want to use. Figure 33 shows an
external power supply powering command centers in a stand-alone configuration.
MPORTAN
For UL certificated accounts, use a UL listed power supply.
See Section 4.3 External Power Supply for external power supply restrictions.
Figure 33 shows the common from the External Power Supply Module connected to both the command centers’ common
and the common on the control panel.
A stand-alone power supply powering any device connected to the panel must also be connected to the Aux - (Aux negative)
terminal on the panel.
Do not connect the stand-alone power supply to earth ground.
Arming Devices
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