D9412GV2/D7412GV2
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Operation and Installation Guide | 11.0 Arming Devices
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Bosch Security Systems, Inc. | 7/09 | F01U003641-04
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11.2.2 Installation
Refer to the keypad installation manuals for
installation and mounting instructions. Keypads
connect to the control panel in parallel (
Table 21
).
Table 21: Keypad Connections
D9412GV2/
D7412GV2
Terminal
Function
Keypad
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 1.5 m (5 ft.) of 0.8 mm (22 AWG) wire
(4.3 m [14 ft.] of 1.2 mm [18 AWG] wire).
Switching the Green and Yellow Wires Affects
Other Keypads:
Connecting the green wire
incorrectly from the keypad to Terminal 31 and the
yellow wire to Terminal 30 causes other keypads
connected to the control panel to go blank or to sound
random beep tones.
You can connect devices to the data bus (Terminals
30 and 31) by parallel wire run from the control panel
to each device, wire from device to device, or a
combination of the two using a maximum of 4572 m
(15000 ft) of 0.8 mm (22 AWG) wire for all devices
connected to the SDI Bus combined.
Wire Limits for Individual Devices
Refer to the installation instructions for each device
for wire length specifications.
Extra Power for More Keypads
The D1255 and D1255B Keypads draw 104 mA when
idle. They draw 206 mA with the keys lit and the
sounder activated. Review
Section 6.0 Power Outputs
on page 28 to determine the total power output
requirements for the system.
One or more D8132 Battery Charger/Power Supply
Modules can be added for the number of keypads
used.
Figure 29
on page 60 shows the D8132
powering keypads 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 or Residential Burglar Units. The D8132
is not UL Listed as a stand-alone power supply.
The control panel and the D8132 (or
other power supply) must share
COMMON.
Figure 29
on page 60 shows the common
form of the D8132 Module connected to
the common on the keypad and the
common on the control panel. Any stand-
alone power supply, powering any device
connected to the control panel, must also
be connected to a common terminal on
the control panel.
If using the ground fault detection
capability on the D9412GV2 and
D7412GV2 Control Panels with an
external power supply, ensure that the
external selected power supply isolates
its earth ground connection from the
negative side of the auxiliary power
output. External power supplies that do
not isolate earth ground can cause
ground fault conditions on the control
panel.
