Bosch D9112B Installation Guide download pdf (Page 7)

D279A Operation and Installation Guide

D279A

2.0 Overview

With a D279A, you can arm and disarm a single zone or point of a Bosch Computer Systems Control/Communicator panel

separately from the rest of the system. The Independent Zone Control (IZC) features a user-programmable four-digit

passcode for arming and disarming, and a built-in panic function. Entry and exit delay times allow you to locate the D279A

Command Center inside the protected area. If you program the D7112, D8112, D9112, D9112B, D7212B and 9000 Series for

opening and closing reports, the D279A can initiate opening and closing reports by zone or point. A 10-wire cable is shipped

with the D279A for interfacing the Independent Zone Control with the panel (4-wires), protective loops (3-wires) and

onboard relay (3-wires).

The D279A is not supervised from the panel: UL Listed applications require arming device supervision. Use the D268/D269

Independent Zone Control to meet the UL requirement for arming device supervision.

2.1 Specifications

2.2 Features

• Permits independent arming and disarming of a single control/communicator zone or point

• 4-digit, user-programmable combination

• Built-in panic function

• Pre-programmed entry and exit delay times

• Individual annunciation of delayed and instant loop status

• Panic and burglary alarm signals to control/communicator

• Form C relay activation on alarm

• Keypad backlights when number keys or the command bar are pressed

• Plug-in cable included for simple wiring to the control/communicator

• Low-profile surface mount enclosure

Overview

Operating Voltage

Nominal 12 VDC

Current Requirements

Keypad idle: 60 mA

Keypad lit, buzzer on, both loops faulted, and relay

activated: 104 mA

Auxiliary Relay Rating

Form C contacts, 12 VDC, 2 A max.

Dimensions (H x W x D)

4.6 in. x 8.2 in. x 0.816 in. (117 mm x 208 mm x 21 mm)

Wiring

A 10-wire quick-connect plug-in cable is provided for

interfacing the D279A with the Control/Communicator

and the protective loops. 22 AWG (1.2 mm) or heavier

gauge wire is required to connect the loops and

control/communicator to the ten flying leads.

Operating Temperature

+32°F to +122°F (0°C to +50°C)

Non-Condensing Relative Humidity

5% to 85% at +86°F (+30°C)

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Bosch D9112B Installation Guide Page 7

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