Bosch D326A Guide d'application

Fire Alarm Systems | D326A Analog Point Contact Module

The D326A Analog Point Contact Module provides a variety

of fire alarm functions, such as monitoring manual pull

stations, waterflow devices, or other dry contact fire alarm

activation applications. The module allows for alarm,

trouble, and supervisory conditions. The D326A module

mounts on a plate that attaches directly to a UL‑Listed four-

inch square back box having a minimum depth of 2-1/8

inches. A cover plate leaves the status LED visible.

System Overview

The D326A Analog Point Contact Module allows compatible

fire alarm control panels (FACP) to supervise Form A or B

dry contact devices in a polling circuit. The D326A has an

eight‑bit microprocessor and communicates with the

control panel (both power and data) over a two-wire polling

circuit. The initiating device circuit (NFPA Style B)

connected to the D326A can have up to 20 normally-open

(NO) dry contact devices. Each module can monitor one

normally-closed (NC) device (NC devices must be non-alarm

applications).

Certifications and Approvals

Region Certification

USA UL UOXX: Control Unit Accessories, System

(UL864, 9th edition)

CSFM 7300-1615: 151

NYC-MEA 26-02-E, Vol. III

Installation/Configuration Notes

Compatibility Information

The following products are compatible with the D326A

Point Contact Module:

Category Product ID Product Description

Control Panels: D8024 Analog fire alarm control panel (FACP)

D10024A Analog FACP

Modules: D9067 Analog polling module

Programmers: D5070 Analog device programmer

Installation Considerations

There are three steps to installing the point contact module:

1. Set the point address: Use the D5070 Analog Device

Programmer to set the address by programming an

EEPROM microchip.

D326A Analog Point Contact Module

▶Digital data communications and power provided over

a two-wire circuit

▶Advanced digital communications protocol compatible

▶Class B circuit for dry contact devices

▶Two-color status LED: green for normal, red for alarm

▶EEPROM addressing in module unit

▶Mount on four-inch square back box

www.boschsecurity.com

2 | D326A Analog Point Contact Module

2. Connect the wiring: Wiring terminals are clearly marked

and the module leaves ample room in the back box for

wiring.

3. Mount the module in the back box: The D326A mounts

on a four-inch square back box.

Data Circuit Length

Data (or polling) circuit length is the distance over the

circuit wire from the connection at the FACP to the most

distant device and back to the FACP. Data circuit length

must include the distance to any device connected to the

circuit in a T tap. The screw terminals can accept up to 14

AWG (1.5 mm) wire, but this reduces the allowable length

of the circuit. Refer to the D9067 Installation Guide (P/

N: 74‑07690‑000) for specific wire instructions and

specifications.

Initiating Device Circuit Connections

The initiating device circuit can use any number of UL-listed

normally open (NO) contact closure devices. Device circuit

wiring must not exceed 50 Ω. Install contact closure devices

according to the manufacturer’s installation instructions.

All wiring must be supervised and power-limited.

Note Do not mix fire alarm initiating and supervisory

devices on the same module.

Parts Included

Quant. Component

1 Point contact module

1 Wall plate

1 EOL resistor, 10 kΩ

1 Hardware pack

1 Literature pack

Technical Specifications

Environmental Considerations

Operating Temperature +32°F to +120°F (0°C to +49°C)

Mechanical Properties

Color Ivory

Dimensions (H x W x D) 4.7 in. x 4.2 in. x 1.35 in.

(12 cm x 11 cm x 3.5 cm)

Material: Acrylonitrile-chlorinated PE-styrene (ACS)

Response Time: 2 sec

Weight 3 oz (85 g)

Power Requirements

Current

Alarm: 28 mA

Polling: 0.022 mA ± 20%

Standby: 0.035 mA (typical)

Resistance

End of Line Device 10 kΩ, 0.25 W per resistor

Initiating Device Circuit Less than 50 Ω

Voltage (input)

Nominal: 24 VDC

Range: 17 VDC to 41 VDC

Ordering Information

D326A Analog Point Contact Module

Allows compatible fire alarm control panels

(FACP) to supervise Form A or B dry contact

devices in a polling circuit

D326A

Americas:

Bosch Security Systems, Inc.

130 Perinton Parkway

Fairport, New York, 14450, USA

Phone: +1 800 289 0096

Fax: +1 585 223 9180

[email protected]

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

[email protected]

www.boschsecurity.com

Asia-Pacific:

Robert Bosch (SEA) Pte Ltd, Security Systems

11 Bishan Street 21

Singapore 573943

Phone: +65 6258 5511

Fax: +65 6571 2698

[email protected]

www.boschsecurity.com

Represented by

T1372026379 | Cur: en-US, V5, 4 Jul 2010

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