Fire Alarm Systems | D9072 Four‑Output NAC Module
D9072 Four‑Output NAC Module
▶ Connection points for four programmable NACs
▶ NAC supervision and detection of open circuit and
ground fault conditions
▶ DIP switch programmable device address
The D9072 Four‑output NAC Module provides connection
points for four notification appliance circuits (NACs) while
supervising and detecting open circuit and ground fault
conditions. Trouble conditions on the NACs are shown on
the control panel text display. Each of the four NACs can be
programmed for On, Off, Double Knock, Delay or Steady/
Steady Delay Mode.
The D9072 operates in the RS‑485 peripheral circuit that
connects to a fire alarm control panel (FACP) through the
D9051 RS‑485 Bus Module. Each NAC output on the D9072
provides up to 1 A of power; however, the total current
allowed for all outputs must not exceed 3 A.
Certifications and Approvals
Region
Certification
USA
UL
UOXX: Control Unit Accessories, System
(UL864, 9th edition)
CSFM
7165-1615: 138 and 7170-1615: 146
NYC-MEA
26-02-E, Vol. III
Installation/Configuration Notes
Compatibility Information
The following products are compatible with the D9072
Four‑output NAC Module:
Functions
Address Setting
Each D9072 has a bank of DIP switches for setting the
device address.
Category
Product ID
Product Description
Control Panels:
D8024
Analog FACP
D10024A
Analog FACP
Modules:
D9051
RS‑485 bus module
NAC Devices:
Refer to the Analog Panels Compatible Devices Technogram (P/N: 73‑07674‑000) for a list of compatible notification appliances.
Power Supplies:
D9142F
24 V auxiliary power supply
Mounting Considerations
The D9072 can be conveniently mounted in an approved
fire‑rated enclosure such as the D4103R or D8109.
www.boschsecurity.com
2 | D9072 Four‑Output NAC Module
Wiring Considerations
Parts Included
RS‑485 Circuit Connections
Make a two‑wire connection from the input terminals on the
terminal block labeled D9072 485 TERMINALS back to the
FACP's RS‑485 peripheral circuit (connects to the FACP
through a D9051 RS‑485 Bus Module). Make a two‑wire
connection from the D9072 485 TERMINALS terminal
block's output terminals to the next RS‑485 device in the
circuit. The unused output terminals of the last device in the
RS‑485 peripheral circuit are connected with an EOL
resistor. Two 150 Ω, 0.25 W EOL resistors come with each
D9051 RS‑485 Bus Module.
Quant.
Component
1
Four‑output NAC module
4
EOL resistors (2.2 kΩ, 1 W)
1
Hardware pack
1
Literature pack
Note
Relative Humidity
Other RS‑485 compatible devices can be
mixed on the RS‑485 bus. Only fifteen D9072
modules can be supported on a single system.
Technical Specifications
Environmental Considerations
Notification Appliance Circuit (NAC) Connections
Module Design
Connect up to four NAC modules to the D9072 SOUNDERS
terminal block. Each NAC is a Class B circuit terminated
with a 2.2 kΩ EOL resistor (supplied). All NACs are
supervised for open or short circuits. A fault in a NAC results
in local annunciation by the D9072 LEDs. This trouble
condition is also annunciated at the FACP.
Dimensions (H x W):
External Trouble Input Connections
A pair of terminals for monitoring normally-closed contacts,
typically trouble outputs on auxiliary power supplies, is at
the right end of the SOUNDERS terminal block. An open
circuit at these terminals results in LED annunciation at the
module and a text display on the FACP’s LCD display. These
terminals can be used to monitor any supervisory point, or
to supervise an auxiliary power source such as a D9142F
24 VDC Auxiliary Power Supply.
Note
If these terminals are not connected, through
closed contacts or a jumper, the control panel
displays a fault message.
Power Connections
An auxiliary power supply (24 VDC to 28 VDC), such as the
D9142F, is required to power the D9072. The terminal block
for DC power to the module is located at the right of the
485 TERMINALS terminal block. A 3.15 A fuse protects the
FACP against incoming power surges.
Americas:
Bosch Security Systems, Inc.
130 Perinton Parkway
Fairport, New York, 14450, USA
Phone: +1 800 289 0096
Fax: +1 585 223 9180
security.sales@us.bosch.com
www.boschsecurity.us
Europe, Middle East, Africa:
Bosch Security Systems B.V.
P.O. Box 80002
5600 JB Eindhoven, The Netherlands
Phone: + 31 40 2577 284
Fax: +31 40 2577 330
emea.securitysystems@bosch.com
www.boschsecurity.com
© Bosch Security Systems Inc. 2010 | Data subject to change without notice
T1372088587 | Cur: en-US, V5, 4 Jul 2010
85% non‑condensing at +104°F (+40°C)
Temperature (operat- +32°F to +120°F (0°C to +49°C)
ing):
5.4 in. x 7.6 in. (14 cm x 19.2 cm)
Outputs (NAC)
Current (per circuit):
1 A per output maximum
Current (total):
3 A maximum
Number of Circuits:
Four programmable supervised NACs
EOL Resistors
2.2 kΩ, 1 W
Power Requirements
Current
Idle:
120 mA
Total:
220 mA (four circuits) + notification appliance load
Voltage
Range:
21 VDC to 32 VDC
Ordering Information
D9072 Four‑Output NAC Module
Provides connection points for four NACs while
supervising and detecting open circuit and
ground fault conditions
D9072
Accessories
D8109 Fire Enclosure
Red steel enclosure measuring 40.6 cm x
40.6 cm x 8.9 cm (16 in. x 16 in. x 3.5 in). UL
Listed. Includes a lock and key set.
D8109
D9013 Analog Modules Mounting Bracket
Compatible enclosures: D8109 UL Approved
Fire Enclosure (red), D8109G Fire Enclosure
(gray), D8109L Louvered Enclosure (red)
D9013
Asia-Pacific:
Represented by
Robert Bosch (SEA) Pte Ltd, Security Systems
11 Bishan Street 21
Singapore 573943
Phone: +65 6258 5511
Fax: +65 6571 2698
apr.securitysystems@bosch.com
www.boschsecurity.com