Bosch DS7457I, DS7457IF Installation Manual

Installation Instructions

for the

DS7457i and DS7457iF Single Zone Input Modules

1.0 Description

The DS7457i/DS7457iF are Single Zone Input Modules designed to operate with compatible multiplex systems. It provides a supervised input zone for connection of conventional normally open or normally closed inputs. Each DS7457i/DS7457iF occupies one multiplex zone address on the system. The DS7457i/DS7457iF connect to the DS7430 or DS7436 Multiplex Expansion Modules or the D8125MUX Multiplex Expansion Module. For additional DS7457i and DS7457iF installation information, refer to the D9412GV2/ D7412GV2 Approved Applications Compliance Guide (P/N: F01U003639) and the D8125MUX Operation and Installation Guide (P/N: F01U034973).

2.0 Specifications

• Module Requirements: The DS7457i/DS7457iF is designed to work with the following multiplex modules:

- DS7430 Multiplex Expansion Module

- DS7436 Multiplex Expansion Module.

- D8125MUX Multiplex Expansion Module

• Line Impedance:

Maximum Impedance: 4.05Ω at +68°F (+20°C) nominal

Maximum Distance Size

250 ft 22 AWG 600 ft 18 AWG

76 m 0.65 mm

193 m 1.02 mm

Fire applications require 18 AWG.

• Voltage: 12 VDC nominal

• Current Draw: 0.5 mA maximum

• Zone Response Time: 400 ms

• Operating Temperature Range: +32°F to +122°F (0°C to +50°C)

• Relative Humidity: 0% to 93%

• Signaling Line Circuit Type: Class B (S tyle 4)

• Initiating Device Circuit Type: Class B (S tyle A)

When used in a fire system, NFPA 72 prohibit s this product from sharing a communications bus with non-fire devices.

3.0 Programming

Consult the intended control panel's installation guide for multiplex zone (point) programming information. See page 4 for switch settings.

4.0 Installation

After any programming or hardware change, do a functional test of the system as required by local codes.

These Installation Instructions assume the control panel is installed and in proper working condition.

The control panel must be programmed and the DS7457i/DS7457iF address switches must be set for the DS7457i/ DS7457iF to operate.

• Program the control panel as described in the panel's Reference Guide.

Disconnect power to the panel before running wires to connect the DS7457i/DS7457iF.

• The DS7457i/DS7457iF is compact enough to fit within most backboxes and enclosures.

5.0 Wiring

DS7457i/iF

Terminals

RE D Pos itive Multiple x In put

BLACK Negative Multiplex Input

YELLOW Protection Zone Positive Input

BLACK Protection Zone Ground

T able 1: DS7457i/DS7457iF T erminal Descriptions

• Connect wiring to the DS7457i/DS7457iF as shown in Figures 1- 3.

• Protection zones are designed to monitor Normally Open or Normally Closed dry contacts. They are supervised using 47K ohm endof-line resistors.

The input zones are power limited and supervised.

When used in fire applications, Normally Open contacts must be used on the input zones.

Description

5.1 DS7430 Multiplex Expansion Module Wiring

Use 47K ohm EOL P/N:26069

on the DS7457i for non-fire applications.

Use 47K ohm EOL P/N:28010

on the DS7457iF for fire applications.

Alarm Contact

(Normally Open or

Normally Closed)

YELLOW

N/C

DS7430

Power Bus

Figure 1: Wiring to a DS7430 Multiplex Expansion Module

5.2 DS7436 Multiplex Expansion Module Wiring

Use 47K ohm EOL P/N:26069

on the DS7457i for non-fire applications.

Use 47K ohm EOL P/N:28010

on the DS7457iF for fire applications.

PWR+ PWR- BUS+ BUS- PWR+ PWR- BUS+ BUS-

Alarm Contact

(Normally Open o r

Normally Closed)

N/C

DS7436

N/O

BLACK

RED

YELLOW

N/O

BLACK

Either Bus A or Bus B,

or both, may be used. Refer

to the panel’s ref er ence guide.

RED

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