Bosch D7053 User Manual

D7053

Installation Instructions

EN

Multiplex Input/Output
Module

D7053 | Installation Instructions |

Notices

Notices

These instructions cover the installation of the D7053
Multiplex Input/Output Module in a fire system
supervised by a D7024 or DS9400M Fire Alarm
Control Panel (FACP) with firmware revision 2.0 or
greater and a D7039 of DS9431 Multiplex Expansion
Module.

Install, test, and maintain the D7053 according to these
instructions, NFPA 72, local codes, and the Authority
Having Jurisdiction (AHJ).

Follow the procedures in these instructions
to avoid personal injury and damage to the
equipment. Failure to follow these
instructions can result in the D7053 not
operating properly. Bosch is not responsible
for improperly installed, tested, or maintained
devices.

Test the FACP according to NFPA 72.

1.0 Description

The D7053 (Figure 1) is a general purpose module that
connects to the control panel’s multiplex bus and
provides a supervised input loop and a Form “C” Relay
output.

All operating power for the D7053 is drawn from the
control panel.

Rotary switches provide convenient address setting.

An on-board Status LED, visible through the low-profile
faceplate, indicates normal operation and
communication with the control panel. The LED flash
rates are:

• Fast: Approximately 4 sec indicating an alarm
condition.

• Medium: Approximately 8 sec indicating a normal
operation.

• Slow: Approximately 16 sec indicating a trouble
condition.

The D7053 can be mounted in a standard double gang
box or a 4 in. x 4 in. electrical box.

Figure 1: D7053 Features

1

2

0

2

0

A

1

9

2

8

0

7

1

6

5

B

0

1

4

1

9
2
3

2

8
7

3

6

4

5

3

4

1 - Status LED
2 - Zone input/output terminals
3 - MUX bus loop terminals
4 - Rotary address switches

2.0 Setting the Address

Set the D7053 address using a flat-blade screwdriver to
position each rotary switch located on the front of the
module (Figure 2). Note that the switches click when
turned.

Figure 2: Setting the Address

A

0

1

2

0

1

B

2

1 2 3

1 - Hundreds 2 - Tens 3 - Ones

A = D7024 FACP, B = DS9400M FACP

For example:
0 hundreds, 9 tens, 5 ones = Address 095 on the

The valid D7053 address is 9 to 255. For additional
address limitations refer to the D7024 Operation and

Installation Guide (P/N: 31499) or the DS9400M
Reference Guide (P/N: 29428).

0

1

9

2

8

3

7

4

6

5

D7024 FACP

0

1

9

2

8

3

7

4

6

5

Bosch | 11/04 | 48342E2

D7053 | Installation Instructions | 3.0 Wiring

The D7053 requires two program addresses. The address
cannot be 8 or any multiple of 8 such as 16, 24, 32, and
so on.

The A address range works on the D7039
Multiplex Expansion Module with the D7024
FACP. The B address range works on the
DS9431 Multiplex Expansion Module with
the DS9400M FACP.

Figure 2 on page 2 shows the input address set at 095.
The output address is set to the next consecutive address,

096. Because the hundreds address is within the input
address range, it works on the D7039 with the D7024
FACP.

3.0 Wiring

Remove all power before making electrical
connections. Failure to do so can result in
personal injury or damage to the equipment.

The wiring connections are made using the zone wiring
and MUX bus loop terminals located on either side of
the D7053 (Items 2 and 3 in Figure 1 on page 2).

All terminals can accommodate up to and including
12 AWG (2.3 mm) wire. Follow the wiring guidelines
specified by NFPA 70 and the local AHJ.

The loop and zone wiring is power limited and
supervised. The relay contacts are not power limited or
supervised. Refer to Figures 3 and 4 for wiring
connections.

Figure 3: Field Wiring Connections

1

2

3

4

4

5

5

6

6

0

2

1 - 2.21 kΩ end-of-line (EOL) resistor, UL Listed

(P/N: 25899)
2 - Zone in (+)
3 - Zone in (-)
4 - Normally-open (NO)
5 - Common (COM)
6 - Normally-closed (NC)

Note: The maximum zone wire resistance is 100 Ω.

Figure 4: Loop and Control Panel Wiring

Connections

A

1

2
0

1

B

Use normally-open (NO) contacts for
Underwriters Laboratories, Inc. (UL) Listed
fire installations.

1

3

2

1

4

0

1

9

8

2

7

3

6

4

5

2

1 - MUX bus loop (+)
2 - MUX bus loop (-)
3 - To the next device
4 - From previous device, the D7039, or the DS9431

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