Bosch D1257RB, D1255RB, D1256RB User Manual

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D1255RB/D1256RB/D1257RB

Installation Instructions

Fire Keypads and

Fire Alarm Annunciator

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D1255RB/D1256RB/D1257RB | Installation Instructions | Listings and Approvals

Listings and Approvals

UL 365

UL 609

UL 864

UL 985

UL 1023

UL 1076

UL 1610

UL 1635

Police Station Burglar Alarm Units and Systems

Local Burglar Alarm Units and Systems

Control Units for Fire-protective Signaling Systems

Household Fire Warning System Units Household Burglar Alarm System Units

Proprietary Alarm Units

Central-station Burglar-alarm Units

Digital Alarm Communicator System Units

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D1255RB/D1256RB/D1257RB | Installation Instructions | Contents

Contents

1.0 Introduction.......................................................4

2.0 Overview ...........................................................4

2.1 D1255RB/D1256RB/D1257RB Features ........4

2.1.1 D1255RB .............................................................4

2.1.2 D1256RB .............................................................4

2.1.3 D1257RB .............................................................4

2.2 Description ..........................................................4

2.2.1 Display ................................................................. 4

2.2.2 Audible Tones..................................................... 4

2.2.3 Switch Settings ....................................................5

3.0 Installation .........................................................5

3.1 Mounting Information (D1255RB,

D1256RB, and D1257RB) .................................5

3.2 Wiring Information (D1255RB, D1256RB,

and D1257RB) .................................................... 5

3.3 Installation Procedure ........................................6

4.0 D1256RB Programming Requirements.......9

4.1 Keypad (COMMAND CENTER)

Assignments.........................................................9

4.2 Area Text............................................................. 9

4.3 Custom Functions.............................................10

4.4 Function List......................................................10

4.4.1 Menu Item and Function.................................11

4.4.2 CC Address # ...................................................11

4.4.3 Passcode Worksheet.........................................11

4.4.4 Passcode............................................................. 11

4.4.5 Keypad (Command Center) Functions..........12

5.0 Specifications ..................................................13

Figures

Figure 1: D1255RB, D1256RB, and D1257RB

Internal Arrangement................................. 5

Figure 2: Releasing the Enclosure Base .................... 6

Figure 3: Lifting the Keypad from the Enclosure

Base............................................................... 6

Figure 4: Removing the Enclosure Base................... 6

Figure 5: Lifting the Red Cover................................. 6

Figure 6: Removing the Red Cover.......................... 7

Figure 7: Removing the Faceplate............................. 7

Figure 8: Setting the Address Switches ..................... 7

Figure 9: Address DIP Switches ................................ 7

Figure 10: Mounting the Enclosure Base.................... 8

Figure 11: Wiring Harness Connection to Keypad

Figure 12: Installing the Enclosure Base − Top ......... 8

Figure 13: Closing the Enclosure Base – Bottom ...... 8

Figure 14: Example – Area Text for Fire Figure 15: Example – Custom Functions

Figure 16: Example – Function List.......................... 10

Figure 17: Example – Fire Passcode Worksheet ..... 11

Figure 18: Example – Keypad Functions ................. 12

Figure 19: Custom Functions ..................................... 13

or Annunciator............................................ 8

Applications................................................. 9

Recommended for UL864 9

Edition .... 10

Tables

Table 1: DIP Switch Address Settings ..................... 7

Table 2: Keypad or Annunciator Connections....... 8

Table 3: Function List Description......................... 11

Table 4: Specifications for the D1255RB and

D1256RB Keypads and the D1257RB

Annunciator............................................... 13

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D1255RB/D1256RB/D1257RB | Installation Instructions | 1.0 Introduction

2.1.2 D1256RB

1.0 Introduction

Before installing the D1255RB, D1256RB, or D1257RB, you should be familiar with the operation and installation guide and the program entry guide for the control panel you are using. Before proceeding with the installation instructions in this manual, be sure that you are familiar with the programming recommendations in the Guide to UL 864 9th Edition Programming Requirements section of the Introduction in the D9412GV2/D7412GV2 Program Entry Guide (P/N F01U003636).

2.0 Overview

2.1 D1255RB/D1256RB/D1257RB Features

The D1255RB and D1256RB Fire Keypads and the D1257RB Fire Alarm Annunciator are 4-wire serial

devices used with the following Bosch Security Systems control panels with firmware version 7.04 or higher:

• D9412GV2

• D7412GV2

• D7212GV2

The D7212GV2 is not approved for commercial fire applications.

Each of these control panels supervises up to eight keypads or annunciators. You can connect a total of 32 keypads or annunciators to the system. The number of supervised keypads or annunciators, number of areas, and the available power affect the total number of keypads or annunciators you can connect to the system.

2.1.1 D1255RB

The D1255RB has number keys (0 to 9) and function or menu keys, including [COMMAND] and [ENTER]. The D1255RB can be used as a system controller and an annunciator.

Because a passcode is required to use the keypad, it is usually installed in building entrances and areas with unrestricted access. Near an exterior door in a hotel or in a business lobby is an ideal mounting location, allowing a responding agency or persons evacuating the building to identify quickly the type and location of the emergency from outside without being in danger.

The D1256RB provides annunciation and system control. Four function keys on the D1256RB provide quick execution of alarm silencing, trouble silencing, annunciator display reset, and sensor reset functions.

The D1256RB should be mounted in a secure area or locked inside an approved

2.1.3 D1257RB

The D1257RB provides remote annunciation without system control capability. It can be mounted in public access locations.

Two keys on the D1257RB allow the user to select forward or backward through a list of system events.

clear plastic enclosure.

2.2 Description

2.2.1 Display

The D1255RB, D1256RB and D1257RB use a 16-character display with custom programmable text. The custom text programmed at the control panel appears in the vacuum fluorescent display (VFD). Refer to Figure 1, Item 1.

The keypads and annunciator show the latest status conditions of the fire system using words, numbers, and symbols. When an alarm occurs, a message remains in the display until the user acknowledges the event at a keypad or annunciator. When a series of events affecting the system occurs, each event appears in order of its priority.

2.2.2 Audible Tones

The D1255RB, D1256RB and D1257RB have a builtin speaker that produces several distinct warning tones. To change the speaker volume, adjust the potentiometer (Figure 1, Item 3). Turn the potentiometer clockwise to increase and counterclockwise to decrease the volume.

You cannot connect external annunciation devices to the D1255RB, D1256RB, and

• Fire Signal – Pulsed, high pitched bell tone when

• Invalid Key Buzz – Flat buzz tone when an

• Keypad Encoding Tone – Muted beep tone as

D1257RB.

the system is in alarm

invalid key, or sequence of keys, is pressed

each key is pressed to indicate that the entry has been accepted. To disable the keypad encoding tone, refer to Section 2.2.3 Switch Settings.

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D1255RB/D1256RB/D1257RB | Installation Instructions | 3.0 Installation

Figure 1: D1255RB, D1256RB, and D1257RB Internal Arrangement

1 - Vacuum fluorescent display (VFD) 2 - Keypad 3 - Speaker volume control (potentiometer) 4- Address DIP switches

• Trouble Buzzer – Two-tone warble when a

trouble event occurs, such as a service alert. To stop the signal on a D1255RB Keypad, press [COMMAND][4]. To stop the tone on a D1256RB, press the [TROUBLE SILENCE] key.

The D1257RB does not have a manual method of stopping the trouble buzzer.

Refer to the Fire System User’s Guide (P/N: F01U011793) for information about silencing the signals.

• Lost Communication – Single trouble tone

followed by a 30-second silence when a keypad or annunciator loses communication from the control panel. To stop the tone, restore communication or remove power from the keypad or annunciator.

2.2.3 Switch Settings

A 6-position DIP switch (Figure 1, Item 4) located under the cover allows you to select the address of each keypad or annunciator and silence the keypad encoding tones.

For information on accessing the switches, refer to Section 3.3 Installation Procedure on page 6.

For supervised keypads, assign only one keypad to each address.

123456

5 - Status LEDs 6 - Wiring harness connector 7 - Speaker for sounder

3.0 Installation

3.1 Mounting Information (D1255RB, D1256RB, and D1257RB)

The D1255RB, D1256RB, and D1257RB are lowprofile, surface-mounted units molded in durable red plastic. Use the D56 Keypad Conduit Box (protected surface or flush mount) for mounting the units.

Mounting Locations

• Do not mount the keypads and

annunciators in locations where they are exposed to direct sunlight. Direct

3.2 Wiring Information (D1255RB,

A four-wire flying lead is required for the data and power connections between the keypad or annunciator and the control panel. The unit includes a wiring harness with four color-coded flying leads at one end and a female four-pin connector at the other end.

Refer to Figure 10 and Figure 11 on page 8 to wire the D1255RB, D1256RB, or D1257RB.

sunlight can interfere with the display screen’s visibility and damage internal components.

• Do not mount the units in wet or moist

locations.

D1256RB, and D1257RB)

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D1255RB/D1256RB/D1257RB | Installation Instructions | 3.0 Installation

3.3 Installation Procedure

1. Power down the control panel.

2. Using a small flat-bladed screwdriver, gently push

4. Gently pull the keypad apart from the enclosure

base at the top hinges.

Figure 4: Removing the Enclosure Base

the two bottom tabs up and in to release the enclosure base. Refer to Figure 2.

Use caution to avoid damage to the tabs and hinges.

Figure 2: Releasing the Enclosure Base

1 - Enclosure base 2- Top hinges

5. Lift and remove the red cover.

1 - Screwdriver

Figure 5: Lifting the Red Cover

2 - Tabs 3 - Enclosure base

3. Gently lift the unit from the enclosure base as the

tabs are pushed in.

Figure 3: Lifting the Keypad from the Enclosure

Base

1 - Enclosure base 2 - Tabs

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Figure 6: Removing the Red Cover

D1255RB/D1256RB/D1257RB | Installation Instructions | 3.0 Installation

7. Set the address switches. Refer to Figure 8, Figure 9,,

and Table 1.

Figure 8: Setting the Address Switches

1 - Red cover

6. Remove the faceplate.

Figure 7: Removing the Faceplate

1 - Faceplate

1 - Faceplate 2 - Address switches

Figure 9: Address DIP Switches

123456

Table 1: DIP Switch Address Settings

Switch Number Address

Number

1 2 3 4 5 6 7 8

∗

Switch 5 toggles the encoding tone ON and OFF. With the

encoding tone turned on, the keypad sounds a beep each time a key is pressed.

1 2 3 4

ON ON ON ON ON OFF ON ON ON ON ON OFF ON ON ON OFF OFF ON ON ON ON ON OFF ON ON OFF ON OFF ON ON ON OFF OFF ON ON OFF OFF OFF ON

∗

ON/OFF

ENCODING TONE

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D1255RB/D1256RB/D1257RB | Installation Instructions | 3.0 Installation

Warning: Avoid injury. Do not wire the

D1255RB, D1256RB, or D1257RB if power is applied to the control panel.

Figure 11: Wiring Harness Connection to Keypad

or Annunciator

8. Connect the flying leads on the wiring harness

(Figure 10) to the wiring terminals on the control panel. Refer to Table 2.

Table 2: Keypad or Annunciator Connections

D9412GV2/ D7412GV2 Terminal Function

32*

POWER + Red 12 VDC 31 DATA BUS A Yellow Data 30 DATA BUS B Green Data 29 COMMON Black Common

* Connect with at least 1.5 m (5 ft.) of 0.8 mm (22 AWG) wire

(4.3 m [14 ft.] of 1.2 mm [18 AWG] wire).

9. Feed the connector end of the wiring harness

through the opening in the back of the enclosure base (Figure 10).

10. Secure the keypad or annunciator to its mounting

Keypad Wire Color Function

1 - Connector

12. Replace the faceplate.

13. Replace the cover. Align and insert the top two

tabs of the cover into the top two tab slots on the front of the keypad.

14. Install the enclosure base: a. Hold the unit at an angle to the enclosure base

and snap the hinges on the top edge of the unit into place first.

Figure 12: Installing the Enclosure Base − Top

location from inside the enclosure base by inserting screws through the mounting holes (Figure 10).

Figure 10: Mounting the Enclosure Base

1 - Mounting hole 2 - Flying leads 3 - Wiring harness 4 - Opening 5 - Connector

11. Connect the wiring harness to the connector on the

back of the keypad or annunciator (Figure 11).

1 - Hinges

b. Press the bottom edge of the unit toward the

enclosure base until the tabs snap into the openings in the base.

Figure 13: Closing the Enclosure Base – Bottom

1 - Enclosure base 2 Tabs

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D1255RB/D1256RB/D1257RB | Installation Instructions | 4.0 D1256RB Programming Requirements

4.0 D1256RB Programming Requirements

For D1255RB and D1257RB programming information, refer to the appropriate

Important programming recommendations and requirements are described in this section. For information about the displays and functions available from the D1256RB, refer to Keypad (Command Center), User Interface, and Function List in the GV2MAIN section, and User (Passcode) Worksheet in the RADXUSR1 Handler or RADXUSR1/RADXUSR2 Handlers section of the program record sheet for the control panel.

4.2 Area Text

Figure 14: Example – Area Text for Fire Applications

program entry guide and program record sheet for the control panel.

4.1 Keypad (COMMAND CENTER) Assignments

• Keypad Text: The D1256RB can be assigned to

any one of the eight addresses in the control panel. Refer to Sections 4.2 Area Text, 4.3 Custom Functions on page 10, and 4.4 Function List on page 10 for programming descriptions for one D1256RB assigned to Keypad 1, Area 1.

• Supervised: Certain local jurisdictions might

require supervision of fire system annunciators. If your area has that requirement, set the supervision to YES for the addresses that use fire alarm annunciators.

• Scope: The D1256RB acknowledges fire alarms

and troubles, not burglar alarms and troubles. Set the scope to include fire areas only.

• Area: Program the area number of the fire area(s)

as normal.

Area 1 Area 2 Area # is On Area # Not Ready Area # is Off Area # Acct is On

P R E S S A L A R M S I L _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

C H E C K F I R E S Y S _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

* F I R E S Y S T E M * _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

P R E S S A L A R M S I L _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Area # is On − PRESS ALARM SIL

Fire area should remain in the OFF state at all times. If the authority level is not programmed correctly, and the fire alarm area arms, PRESS ALARM SIL shows on the display. Pressing the [ALARM SILENCE] key silences any alarms(s) and disarms the area. The idle text, * FIRE SYSTEM *, appears on the display when the area is disarmed.

Area # Not Ready − CHECK FIRE SYS

Most fire alarm areas consist of all 24-hour points and the Area # Not Ready display is not used. If a controlled point type is used for some type of fire supervision device, and the device becomes off-normal, CHECK FIRE

SYS appears on the fire keypad. Area # is Off − * FIRE SYSTEM *

This is the normal idle text for the fire keypad and annunciator.

Area # Acct is On − PRESS ALARM SIL

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D1255RB/D1256RB/D1257RB | Installation Instructions | 4.0 D1256RB Programming Requirements

4.3 Custom Functions

Figure 15: Example – Custom Functions Recommended for UL864 9th Edition

CF 128 CF 129 CF 130 CF 131

Custom Function Text Custom Function Keystrokes

A L A R M S I L E N C E ? 1 2 5 6 0 0 E _ _ _ _ _ _ _ _ _ T R O U B L E S I L E N C E ? A 4 C C _ _ _ _ _ _ _ _ _ _ _ _ D E T E C T O R R E S E T ? A 4 7 _ _ _ _ _ _ _ _ _ _ _ _ _ A N U N C I A T O R R E S E T 1 2 5 6 0 0 C A 4 7 _ _ _ _ _ _

In Figure 15, C = [ESC], E = [ENT], A = [Command].

In the D1256RB, Custom Functions must be programmed as indicated in Figure 15. Refer to Keypad (Command Center), Custom Functions in the program record sheet for your control panel for information on making the

function keys operational.

The passcode 125600 is used in the following examples. You can use any passcode.

CF 128 − ALARM SILENCE ?

Keystrokes: [1] [2] [5] [6] [0] [0] [ENT]. Program this custom function as the first Menu item in the D1256RB

display. The Alarm Silence function is executed when the [ALARM SILENCE] key is pressed on the D1256RB. The control panel sees the keystroke entry as a valid passcode having the authority to silence a ringing fire bell in the area. The [ENT] key has the enter function.

CF 129 − TROUBLE SILENCE ?

Keystrokes: [A] [4] [ESC][ESC]. Program this custom function as the second item in the Menu. The function is

executed whenever the [TROUBLE SILENCE] key is pressed on the D1256RB. This entry is the equivalent to executing a [COMMAND] [4] on the D1256RB.

CF 130 − DETECTOR RESET ?

Keystrokes: [A] [4] [7]. Program this custom function as the third item in the Menu. The function is executed

whenever the [DETECTOR RESET] key is pressed on the D1256RB. This entry is the equivalent to executing a [COMMAND] [4][7] on the D1256RB.

CF 131 − ANNUNCIATOR RESET ?

Keystrokes: [1] [2] [5] [6] [0] [0] [ESC] [Command] [4] [7]. Program this custom function as the fourth command

item in the Menu. The function is executed whenever the [ANNUNCIATOR RESET] key is pressed on the D1256RB. Executing this function clears the “View Memory” buffer, but does not clear the event out of the event log contained with the control panel.

4.4 Function List

Figure 16: Example – Function List

Item

1 1 2 8 2 1 2 9 3 1 3 0 4 1 3 1 5 _ _ 9 6 _ 1 0 7 _ 1 2 8 _ 2 1

9 _ 2 9 10 _ 3 2 11 _ _ _

Function

Refer to Function List in the program record sheet for the control panel.

Address 1

Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No

Address 2

Address 3

Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No Yes / No

Address 4

Address 5

Address 6

Address 7

Address 8

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D1255RB/D1256RB/D1257RB | Installation Instructions | 4.0 D1256RB Programming Requirements

4.4.1 Menu Item and Function

Program the first ten menu items as indicated in Table 3. This programming is necessary for the D1256RB to operate properly. The first four keys on the D1256RB execute the first four menu items enabled at the keypad address. Menu items five through ten are optional features that can be programmed into the D1256RB system. Refer to the Fire System User’s Guide (P/N: F01U011793) for further explanation of these optional programmable items.

Ensure that CF 128 through CF 131 are programmed E (enabled) and not P (passcode required).

Table 3: Function List Description

Menu Item Function Description

1 128 2 129 3 130 4 131 5 9 6 10 7 12 8 21 9 29

10 32

ALARM SILENCE? TROUBLE SILENCE? DETECTOR RESET? ANNUNCIATOR RESET VIEW MEMORY? VIEW PT STATUS? FIRE TEST? VIEW LOG? REMOTE PROGRAM? DISPLAY REV?

4.4.2 CC Address #

CC = command center = keypad

Program the keypad (command center) addresses as Yes for the first four menu items and for the optionally programmed menu items five through ten.

4.4.3 Passcode Worksheet

Figure 17: Example – Fire Passcode Worksheet

User (Passcode) Worksheet (Users 000 to 029)

User

123 __ __ __ __ __ __

000

001

Passcode

1 2 5 6 0 0

User

Group

____

1 2 3 4 5 6 7 8

15 15 15 15 15 15 15 15

__ __ __ __ __ __ __

Area Authority

Refer to User (Passcode) Worksheet in the program record sheet for the control panel.

4.4.4 Passcode

A special passcode must be programmed as a valid passcode for the system to work properly. This passcode is used in Custom Functions 128 through 131. Use any user number to establish this mandatory valid passcode. You must also create it as a valid passcode in the area to which the D1256RB is assigned. Use Authority Level 14 together with the passcode you select. Ensure that Passcode Arm is disabled (blank) for the Authority Level. Refer to Authority Level Selections in the program record sheet for the control panel.

SERVICE PASSCODE

USER 1

User Name

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D1255RB/D1256RB/D1257RB | Installation Instructions | 4.0 D1256RB Programming Requirements

4.4.5 Keypad (Command Center) Functions

The following keypad function must be enabled or passcode required to enable the [DETECTOR RESET] key.

• #27 Reset Sensors

Include the following items in the menu:

• #9 View Event Memory

• #10 View Point Status

• #12 Fire Test

• #21 View Log

• #29 Remote Program

• #32 Display Rev

Refer to Figure 18.

For the D9412GV2 Control Panel, program each of the keypad functions with E (enabled) and not P (passcode required). If restricting any of the keypad functions with a passcode is required, those functions must be executed from a custom function that includes an authorized passcode.

Example (Refer to Figure 18.): If the keypad function View Memory is programmed as P (passcode required), and the passcode 125600 has authority to execute it, the keystrokes would be:

[A] [4] [0] [1] [2] [5] [6] [0] [0] [E]

When creating a Menu Function List for a keypad address, consider that the D1256RB Keypad does not have numeric keys. Ensure that:

• no passcode-protected keypad functions

are in a Menu Function List enabled at an address that coincides with the installed address for a D1256RB Keypad.

• the

CC# Menu Key Lock

prompt is set

to No for the D1256RB address.

Figure 18: Example – Keypad Functions

Keypad Functions

# Functions Command

1 Disarm ?

2 Master Arm Delay ? CMD 1

3 Master Arm Instant ? CMD 11

4 Perimeter Instant ? CMD 2

5 Perimeter Delay ? CMD 3

6 Watch Mode ? CMD 6

7 Perimeter Part ? CMD 8

8 View Area Status ?

9 View Memory ? CMD 40

10 View Pt Status ?

11 Walk Test ? CMD 44

12 Fire Test ? CMD 58

13 Send Report ? CMD 41/42

14 Door Control ? CMD 46

Cycle Door ?

Unlock Door ?

Secure Door ?

37 Access Control Level?

15 Change Display ? CMD 49

16 Change Time/Date ? CMD 45

17 Change Passcode ? CMD 55

18 Add User ? CMD 56

19 Del User ? CMD 53

20 Extend Close ? CMD 51

21 View Log ?

22 Print Log ?

23 User Command 7 ? CMD 7

24 User Command 9 ? CMD 9

25 Bypass a Point ? CMD 0

26 Unbypass a Point ? CMD 00

27 Reset Sensors ? CMD 47

28 Change Relays ? CMD 54

29 Remote Program ? CMD 43

30 Move To Area ? CMD 50

32 Display Rev ? CMD 59

33 Service Walk ?

34 Default Text ? CMD 57

35 Change Skeds ? CMD 52

36 Invisible Walk ?

* Keypad Function options: P = Passcode;

E = Enabled (no passcode required); Blank = Disabled

E/P*

E E

E E E

E E

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Page 13

Ensure that CF 128 through CF 131, and any other functions you are using in the menu, are programmed E (enabled), not P (passcode required). Refer to Figure 19.

Figure 19: Custom Functions

Keypad Functions

Custom Functions E/P*

128 Custom Function 128

129 Custom Function 129

130 Custom Function 130

131 Custom Function 131

132 Custom Function 132**

133 Custom Function 133**

134 Custom Function 134**

135 Custom Function 135**

136 Custom Function 136**

137 Custom Function 137**

138 Custom Function 138**

139 Custom Function 139**

140 Custom Function 140**

141 Custom Function 141**

142 Custom Function 142**

143 Custom Function 143**

D1255RB/D1256RB/D1257RB | Installation Instructions | 5.0 Specifications

E E

5.0 Specifications

Table 4: Specifications for the D1255RB and D1256RB Keypads and the D1257RB Annunciator

Power

Wiring

Color Display

Operating Temperature Relative Humidity

Nominal 12 VDC supplied by the control panel

Idle: 104 mA Current Required Maximum: 225 mA, with annunciator lit, all 4 Status LEDs on, and warning tone on

4-wire supplies Data In, Data Out, + 12 VDC, and Common.

Maximum data loop resistance is 10 Ω.

Base (HxW): 4.6 in. x 8.2 in. (11.6 cm x 20.7 cm) Dimensions (H x W x D) Cover : 4.3 in. x 8.12 in. x 0.8 in. (10.9 cm x 20.6 cm x 2.9 cm)

Red 16-character vacuum fluorescent display (VSD).

Each character is a 14-segment unit.

+32°F to +122°F (0° C to +15° C) 5% to 85% at +86°F (+30° C)

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Bosch D1257RB, D1255RB, D1256RB User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual