Installation

Consult the D1255 Installation Instructions (74-06819-000) for installation and mounting instructions. Command centers connect to the D9112 panel in parallel as shown in Table 5.

D9112

Command Center

Terminal

Function

Wire Color

Function

32 *

POWER +

Red

12 VDC

31

DATA BUS A

Yellow

Data-In

30

DATA BUS B

Green

Data-Out

29

COMMON

Black

Common

*Connect with at least 5' of 22 AWG wire (14' of 18 AWG wire)

Table 5: D1255 Connections

Switching the green and yellow wires affects other command centers: Incorrectly connecting the green wire from the command center to the D9112's terminal 31 and the yellow wire to terminal 30, causes other command centers connected to the panel to go blank and/or sound random beep tones.

You can connect a maximum of 15,000 feet of 22 AWG wire for all command centers and printer modules combined to the data bus, terminals 30 and 31. You can connect parallel wire runs from the D9112 to each device, run wire device to device, or combine the two.

Extra power needed for more command centers: The D1255 Command Center draws 104 mA when it is idle. It draws 206 mA with the back lighting for the keys lit and the sounder activated. Review the Power Outputs section to determine the total power output requirements for your system.

You may need to add one or more D8132 Battery Charger/Power Supply Modules for the number of command centers you want to use. Figure 19 shows the D8132 powering command centers in a stand-alone configuration.

For UL certificated accounts use a UL listed power supply. The D8132 is not UL listed as a stand-alone power supply.

D9112 and D8132 (or other power supply) must share COMMON: Note that Figure 19 shows the common from the D8132 module connected to both the command centers' common and the common on the D9112.

A stand-alone power supply powering any device connected to the D9112 must also be connected to a common terminal on the D9112. Do not connect the stand-alone power supply to earth ground other than terminal 10 on the D9112.

 

D9112 Operation & Installation Manual

 

74-06144-000-C 2/96

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© 1993-1996 Radionics

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Bosch Appliances installation manual D9112 Command Center Terminal Function Wire Color, D1255 Connections