Power Supply Connections; Option Bus Wiring Requirements; Figure 6: Connecting The Transformer To The Fpd-7024 Circuit Board - Bosch FPD-7024 Operation And Installation Manual

FPD-7024 | Operation and Installation Guide | 2.0
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2.1

Power Supply Connections

Use wire nuts to connect the primary side of the
transformer (black and white wires) to the
unswitched 120 V, 60 Hz or (yellow and white
wires) to unswitched 240 V, 50 Hz circuit. Connect
the earth ground to the threaded ground stud on
the left side of the enclosure.
Figure 6: Connecting the Transformer to the FPD-7024 Circuit Board
Yellow
Primary
White
Black
Connect the primary side of
the transformer black and
white wires to unswitched
120V, 60Hz or yellow and
white wires to 240V, 50 Hz
circuit using wire nuts.
2.2

Option Bus Wiring Requirements

Use 18 AWG (1.2 mm) or larger wire to connect
option bus devices to the FACP. The total length of
wire connected to the option bus terminals must
not exceed 4,000 ft (1,219 m), regardless of the
wire gauge wire used.
Shared cable is not recommended for
option bus, addressable points bus,
telephone, or NAC wiring.
Bosch Security Systems, Inc. | 1/10 | F01U008458-03
AUX-
AUX+
A+
N
A
B+
C
B-
1
A-
A+
N
A
B+
C
B-
2
A-
BAT-
24V
BAT+
Avoid shielded or twisted pair-wire except for
special applications where a reduced length of
wiring (approximately 50%) is acceptable for
tolerating a harsh electrical environment.
The length of wire allowed between the control
panel and the last device on a wiring run depends
on the existing drawn on that wiring run. Reducing
the number of devices on a wiring run allows the
individual runs to be longer. Use the guidelines in
Table 10 on page 20 where devices are all of the
same type on a given wire run.
Control Panel Terminal Connections
Place a wire nut over the unused black or
yellow wire.
Power Trouble
Alarm Silenced
Supervisory Gnd Flt
1 2 3
Drill
Acknowledge
4 5 6
Disable
Silence
7 8 9
Test
* #
0
Reset
History
Prog
B ack Enter
To comply with UL, do not share
supplementary devices with primary
device on the option bus.
R2
HR2
HT2
T2
R1
RH1
TH1
T1
NC 3
COM3
NO 3
NC 2
COM2
NO2
NC 1
COM1
NO 1
SMK+
SMK-
4A+
4B+
4B-
4A-
3A+
3B+
3B-
3A-
2A+
2B+
2B-
2A-
1A+
1B+
1B-
1A-
R B G Y OPTION BUS
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