Bosch LBB1990/00, LBB1992/00, LBB1994/00, LBB1995/00, LBB1996/00 System Manual

Plena Voice Alarm System

Basic System Manual

Voice Alarm Systemen

Plena Voice Alarm System | Basic System Manual | Important Safeguards en | 3

Important Safeguards

Prior to installing or operating this product, always read
the Important Safety Instructions which are available as
a separate document (9922 141 7014x). These
instructions are supplied together with all equipment
that can be connected to the mains.

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Plena Voice Alarm System | Basic System Manual | Important Notices en | 4

Important Notices

When using routers, keypads or more than one call
station, configure the controller using the supplied
software.

Use shielded cable (Cat-5) between the routers and the
controller. Do not connect the shield to both the
controller and the router!

The factory default setting of the Plena Voice Alarm
Controller is as follows:

• Stand-alone unit configured for an ISO 60849
compliant system when used with a spare power
amplifier from the Plena range and compliant wiring
and loudspeakers.

• One channel system.

• Supervision on for:

• Loudspeaker lines

(90 seconds interval, 15% accuracy)

• Main and spare power amplifier

• Short to ground (“Ground short”)

• Mains and battery power

•EMG mic

•Memory

Please note that when used with the factory default
configuration:

• The background music (BGM) is muted when no
spare power amplifier is connected. Disabling the
spare power amplifier supervision or overall
supervision restores the BGM.

• The BGM will not be present in non-selected zones
during a call. If this is desired, connect a spare/call
power amplifier and switch the system to 2-channel
mode.

Thank you for choosing a Bosch Security Systems
product.

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Plena Voice Alarm System | Basic System Manual | Table of Contents en | 5

Table of Contents

Important Safeguards ..................................................................................................................................................3

Important Notices ..........................................................................................................................................................4

Table of Contents ..........................................................................................................................................................5

1. Introduction ....................................................................................................................................................................9

1.1 Purpose .....................................................................................................................................................................................9

1.2 Digital document .....................................................................................................................................................................9

1.3 Intended audience ..................................................................................................................................................................9

1.4 Related documentation ..........................................................................................................................................................9

1.5 Alerts ..........................................................................................................................................................................................9

1.6 Signs ..........................................................................................................................................................................................9

1.7 Conversion tables ................................................................................................................................................................10

2. System Overview ....................................................................................................................................................... 11

2.1 Voice Alarm System ............................................................................................................................................................11

2.1.1 Introduction ......................................................................................................................................................................11

2.1.2 Application types ............................................................................................................................................................11

2.1.3 Application areas ............................................................................................................................................................ 11

2.1.4 Plena ..................................................................................................................................................................................11

2.2 Basic system ......................................................................................................................................................................... 11

2.3 Voice alarm controller .......................................................................................................................................................... 12

2.3.1 Introduction ......................................................................................................................................................................12

2.3.2 Hand-held microphone ..................................................................................................................................................12

2.3.3 Internal power amplifier .................................................................................................................................................12

2.3.4 Internal message manager ...........................................................................................................................................12

2.3.5 Supervision ......................................................................................................................................................................12

2.3.6 Overview ...........................................................................................................................................................................12

2.4 Call station .............................................................................................................................................................................15

2.4.1 Introduction ......................................................................................................................................................................15

2.4.2 Overview ...........................................................................................................................................................................16

3. Installation ................................................................................................................................................................... 17

3.1 Introduction ............................................................................................................................................................................17

3.2 Requirements ........................................................................................................................................................................17

3.3 Unpacking ..............................................................................................................................................................................17

3.4 CD-ROM ................................................................................................................................................................................17

3.5 Hardware installation ...........................................................................................................................................................17

3.6 Emergency microphone ...................................................................................................................................................... 18

3.7 BGM inputs ...........................................................................................................................................................................18

3.8 Call station .............................................................................................................................................................................19

3.9 External power amplifier ...................................................................................................................................................... 19

3.10 Loudspeakers ........................................................................................................................................................................20

3.11 Volume overrides .................................................................................................................................................................. 21

3.12 Line output .............................................................................................................................................................................23

3.13 Mic/line input with VOX functionality ...............................................................................................................................24

3.14 Status output contacts .......................................................................................................................................................25

3.15 Power ......................................................................................................................................................................................25

3.15.1 Introduction ......................................................................................................................................................................25

3.15.2 Mains power .................................................................................................................................................................... 25

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Plena Voice Alarm System | Basic System Manual | Table of Contents en | 6

3.15.3 Back-up power ................................................................................................................................................................26

4. Configuration .............................................................................................................................................................. 27

4.1 Introduction ............................................................................................................................................................................27

4.2 System settings .................................................................................................................................................................... 27

4.2.1 Introduction ......................................................................................................................................................................27

4.3 Monitor .................................................................................................................................................................................... 27

4.4 APR mode ..............................................................................................................................................................................27

4.5 Supervision ............................................................................................................................................................................28

4.5.1 Introduction ......................................................................................................................................................................28

4.5.2 Overview ...........................................................................................................................................................................28

4.5.3 Processor supervision ................................................................................................................................................... 28

4.5.4 Message supervision ..................................................................................................................................................... 29

4.5.5 Line supervision .............................................................................................................................................................. 29

4.5.6 Emergency microphone ................................................................................................................................................29

4.5.7 Mains power supervision .............................................................................................................................................. 29

4.5.8 Battery supervision ......................................................................................................................................................... 29

4.5.9 Internal power amplifier supervision ...........................................................................................................................29

4.5.10 External power amplifier supervision ..........................................................................................................................29

4.5.11 1 channel and 2 channel operation ............................................................................................................................30

4.6 VOX configuration ................................................................................................................................................................ 30

4.6.1 Introduction ......................................................................................................................................................................30

4.6.2 Vox ..................................................................................................................................................................................... 31

4.6.3 Speech filter ..................................................................................................................................................................... 31

4.6.4 Phantom power ...............................................................................................................................................................31

4.7 Call station .............................................................................................................................................................................31

4.7.1 Introduction ......................................................................................................................................................................31

4.7.2 Call station ID .................................................................................................................................................................. 31

4.7.3 Sensitivity .........................................................................................................................................................................32

4.7.4 Speech filter ..................................................................................................................................................................... 32

4.7.5 Termination .......................................................................................................................................................................32

5. Operation ..................................................................................................................................................................... 33

5.1 Switch on ............................................................................................................................................................................... 33

5.2 Switch off ............................................................................................................................................................................... 33

5.3 Calibration ..............................................................................................................................................................................33

5.4 Background music ............................................................................................................................................................... 33

5.4.1 Introduction ......................................................................................................................................................................33

5.4.2 Select BGM source ....................................................................................................................................................... 33

5.4.3 Select zones ....................................................................................................................................................................34

5.4.4 Adjust volume .................................................................................................................................................................. 34

5.4.5 Adjust frequencies .........................................................................................................................................................34

5.5 Business calls .......................................................................................................................................................................35

5.5.1 Introduction ......................................................................................................................................................................35

5.5.2 Select zones ....................................................................................................................................................................35

5.5.3 Make the announcement .............................................................................................................................................. 35

5.6 Emergency state ................................................................................................................................................................... 36

5.6.1 Introduction ......................................................................................................................................................................36

5.6.2 Enter the emergency state ...........................................................................................................................................36

5.6.3 Acknowledge the emergency state ............................................................................................................................ 36

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Plena Voice Alarm System | Basic System Manual | Table of Contents en | 7

5.6.4 Exit the emergency state ............................................................................................................................................... 36

5.6.5 Distribute live speech .................................................................................................................................................... 36

5.6.6 Distribute the alert message ........................................................................................................................................ 38

5.6.7 Distribute the alarm message ...................................................................................................................................... 39

5.7 Fault state .............................................................................................................................................................................. 39

5.7.1 Introduction ......................................................................................................................................................................39

5.7.2 Acknowledge the fault state ........................................................................................................................................ 39

5.7.3 Reset the fault state ....................................................................................................................................................... 39

5.7.4 Fault indicators ................................................................................................................................................................40

6. Technical data ............................................................................................................................................................. 43

6.1 LBB1956/00 ......................................................................................................................................................................... 43

6.1.1 Electrical ...........................................................................................................................................................................43

6.1.2 Performance .................................................................................................................................................................... 43

6.1.3 Interconnection ............................................................................................................................................................... 43

6.1.4 Environmental conditions .............................................................................................................................................. 43

6.1.5 General .............................................................................................................................................................................43

6.2 LBB1990/00 ......................................................................................................................................................................... 43

6.2.1 Electrical ...........................................................................................................................................................................43

6.2.2 Message manager .......................................................................................................................................................... 44

6.2.3 Internal power amplifier .................................................................................................................................................44

6.2.4 Interconnection ............................................................................................................................................................... 44

6.2.5 Loudspeaker outputs .....................................................................................................................................................44

6.2.6 Overrides ..........................................................................................................................................................................44

6.2.7 Trigger outputs ................................................................................................................................................................44

6.2.8 Trigger inputs/24 V DC out ......................................................................................................................................... 45

6.2.9 Mic/line input with VOX functionality .........................................................................................................................45

6.2.10 BGM ..................................................................................................................................................................................45

6.2.11 Line out .............................................................................................................................................................................45

6.2.12 External power amplifier ................................................................................................................................................ 45

6.2.13 Environmental conditions .............................................................................................................................................. 45

6.2.14 General .............................................................................................................................................................................45

7. Glossary ........................................................................................................................................................................ 47

8. Product Index .............................................................................................................................................................. 49

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Plena Voice Alarm System | Basic System Manual | Table of Contents en | 8

Intentionally left blank.

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Plena Voice Alarm System | Basic System Manual | Introduction en | 9

1 Introduction

1.1 Purpose

The purpose of the Basic System Manual is to provide
information that is required to install, configure and
operate a basic Plena Voice Alarm System. By
definition, such a system is installed, configured and
operated without a PC.

1.2 Digital document

The Basic System Manual is also available as a digital
document in the Adobe Portable Document Format
(PDF). All references to pages, figures, tables, etc. in this
digital document contain hyperlinks to the referenced
location.

1.3 Intended audience

The Basic System Manual is intended for installers and
users of a basic Plena Voice Alarm System. Installers
and users of extensive systems should refer to the
Installation and User Instructions (see section 1.4).

1.6 S ign s

Except for note alerts, the nature of the effect that can
be caused when the alert is not observed, is indicated
using a sign. For note alerts, the sign provides more
information about the note itself. In this manual, the
following signs are used in combination with alerts:

Note

General sign for notes.

Note

Consult the indicated source of information.

Caution, Warning, Danger

General sign for cautions, warnings and
dangers.

1.4 Related documentation

The following related documents are available:

• Plena Voice Alarm System Installation and User
Instructions (9922 141 1037x).

• Plena Voice Alarm System Configuration Software
Manual (9922 141 1038x).

1.5 Alerts

In this manual, four types of alerts are used. The alert
type is closely related to the effect that may be caused
when it is not observed. These alerts - from least severe
effect to most severe effect - are:

• Note
Alert containing additional information. Usually, not
observing a note alert does not result in damage to
the equipment or personal injuries.

• Caution
The equipment can be damaged if the alert is not
being observed.

• War ning
Persons can be (severely) injured or the equipment
can be seriously damaged if the alert is not being
observed.

• Danger
Not observing the alert can result in death.

Caution, Warning, Danger

Risk of electric shock.

Caution, Warning, Danger

Risk of electrostatic discharges.

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Plena Voice Alarm System | Basic System Manual | Introduction en | 10

1.7 Conversion tables

In this manual, SI units are used to express lengths,
masses, temperatures etc.. These can be converted to
non-metric units using the information provided below.

table 1.1: Conversion of units of length

1 in = 25.4 mm 1 mm = 0.03937 in
1 in = 2.54 cm 1 cm = 0.3937 in
1 ft = 0.3048 m 1 m = 3.281 ft
1 mi = 1.609 km 1 km = 0.622 mi

table 1.2: Conversion of units of mass

1 lb = 0.4536 kg 1 kg = 2,2046 lb

table 1.3: Conversion of units of pressure

1 psi = 68.95 hPa 1 hPa = 0.0145 psi

Note

1 hPa = 1 mbar.

°F

° C

9

---

°C 32+⋅=

5

5

---

°F 32–()⋅=

9

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Plena Voice Alarm System | Basic System Manual | System Overview en | 11

2 System Overview

2.1 Voice Alarm System

2.1.1 Introduction

The Plena Voice Alarm System is a public address and
voice alarm system in which all the necessary features
for compliance to evacuation standards such as
IEC60849, NEN2575 and BS5839/8 are integrated.

2.1.2 Application types

Typically, the Plena Voice Alarm System is used to
create small systems that must comply to evacuation
standards, medium-sized systems in which one call
channel is enough and large systems that consist of
many small zones.

2.1.3 Application areas

The application areas of the Plena Voice Alarm System
include:

• Supermarkets, shops

•Factories

• High-rise buildings

• Office buildings

•Schools

• Recreational facilities

•Hotels

• Small airports

2.1.4 Plena

The Plena Voice Alarm System is part of the Plena
product range. Plena provides public address solutions
for places where people gather to work, worship, trade
or simply enjoy themselves. It is a family of system
elements that are combined to create public address
systems tailored for virtually any application. The range
includes mixer, pre, system and power amplifiers, a
source unit, digital message manager, feedback
suppressor, conventional and PC call stations, an ‘All-in­One’ system and a voice alarm system. Each element is
designed to complement all others thanks to matched
acoustical, electrical and mechanical specifications.

2.2 Basic system

As mentioned before, the scope of this manual is a basic
system. By definition, a basic system is installed,
configured and operated without a PC. Such a system
can only consist of:

• 1x LBB1990/00 Voice Alarm Controller (required).

• 1x LBB1956/00 Call Station (optional).

LBB1956/00

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LBB1990/00

figure 2.1: Basic system

Plena Voice Alarm System | Basic System Manual | System Overview en | 12

2.3 Voice alarm controller

2.3.1 Introduction

The LBB1990/00 Voice Alarm Controller is the heart of
the Plena Voice Alarm System. The voice alarm
controller distributes emergency calls, business calls as
well as background music (BGM) to up to 6 loudspeaker
zones.

figure 2.2: Voice Alarm Controller

Note

When the voice alarm controller has been
purchased in the Asian-Pacific Region, the
emergency button has a different cover.

2.3.2 Hand-held microphone

The voice alarm controller is equipped with a hand-held
microphone, which can be used to make emergency
calls.

2.3.3 Internal power amplifier

The voice alarm controller has a 240 W internal power
amplifier, which can be used in 1-channel or 2-channel
mode. In the 1-channel mode, all calls and BGM are
amplified by the internal power amplifier. If desired, an
external power amplifier can be connected for spare
switching. In the 2-channel mode, the BGM is amplified
by the internal power amplifier, whereas the calls are
amplified by an external power amplifier.

2.3.4 Internal message manager

The voice alarm controller has an internal message
manager, which maps wave files (.wav) to messages that
can be played by the Plena Voice Alarm System.

2.3.5 Supervision

All necessary supervision features for compliance to
evacuation standards are integrated into the voice alarm
controller. If supervision is enabled and a fault is
detected, the voice alarm controller lights a LED on its
front panel that indicates the cause of the fault.

2.3.6 Overview

See figure 2.3 for an overview of the controls,
connections and indicators on the voice alarm
controller:
1 Power LED/VU Meter - A combined power

indicator and VU meter. The green power LED is lit
if the voice alarm controller is connected to the
mains or back-up power and switched on. The VU
meter indicates the master VU level: 0 dB (red), - 6
dB, -20 dB (yellow).

2 Fault indicators - Twelve yellow system fault

LEDs (Processor reset, Network, Call/EMG, Music/

Spare, Ground short, Input, Mains, Battery, Message,
EMG mic, RCP and Router) and twelve yellow

loudspeaker line fault LEDs. Fault indication is only
possible if supervision is enabled (see section 5.7). If
supervision is disabled, the yellow Disabled LED is
lit.

3 Fault state buttons - Two buttons to acknowledge

(Ack) and reset (Reset) the fault state (see section

5.7).

4 Emergency state buttons - Two buttons to

acknowledge (Ack) and reset (Reset) the emergency
state (see section 5.6).

5 Emergency call zone selectors - Six buttons to

select the zones to which the emergency call must be
distributed (see section 5.6). Each button has a green
and a red LED. The six red LEDs indicate the zones
that are selected for the emergency call. The six
green LEDs indicate the zones in which a business
call is running.

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Plena Voice Alarm System | Basic System Manual | System Overview en | 13

1

Plena Voice Alarm C

Fault Indicators

-20dB

0dB

-6dB

Processor reset

Network

Call/EMG
Music/Spare

Ground short
Input

18 19 20 22 23 24 25 26 27 28 30 312921

2Channel

1Channel

IntBooster

ExtBooster

AB

100 V

Z1

0

100 V

Z2

0

100 V

Z3

0

100 V

Z4

0

100 V

Z5

0

100 V

Z6

0

Ext

100 V

Booster

In

0

DC In

24V

BGM/ C all

N.C./Spare

BGM/Spare

Call

100 V

0

100 V

0

100 V

0

100 V

0

100 V

0

100 V

0

100 V

70V

0

100 V

2 3 4 5

ontroller

Disabled

A

EMGmic

Mains
Battery

Message

EMGmic

RCP

Router

Alert message

Alarm message

B

Zone1

Zone2

Zone3

Zone4

Zone5

Zone6

All call

Indicator test

Fault

-

-

EMG

Ack

Reset

Select

CD/Tuner

Zone select

Zone1 Zone2 Zone3 Zone4 Zone5 Zone6

Zone select

Aux

+

0

+

1013

In

CD/Tuner

89

24V

DCout

10k

10k

VOX

Switch

AUX

DC out

VOXSwitch

Call station

24V

PC

For service only

SEL1
SEL0
Firmware
Upgrade

1

Off

2

On

Impedance
Calibration

L

R

GND

Mic/Line

Override/TriggerOutput

24V

Z1

Z1

Z2

Z2

Z3

Z4

Z3

Z5

Z4

Z6

Z5

TRG 1

Z6

Int

Booster

Out

Call out

1114

Triggerinput/24V DC out

Emergency

123456

Business

NC

NC

COM

EMG

NO

NC

COM

Fault

NO

NC

COM

Call

NO

NC

24V

VolumeOverride

NO

TRG2

Out

GND

External Booster

123456

NO

123456

COM

123456

Monitor
APR mode
Supervision
2ch operation
Reserved

Vox

6712151617

LBB1990/00 8900199 0 0001

Plena Voice Alarm Controller
Max.output power 360W
Rated output power 240W
115-230V~,50/6 0Hz
S/N.

USB

Off

On

Vox
Speech filter

Phantompower

Off

On

Design& Quality
TheNetherlands

EMG.Mic

Digital

Mess age

N663

Linefuse
T6.3L250Vfor230V AC
T10L250V for115VAC

RemoteControl Panel

Monitoring

Speaker

Alarm

230V~

115V~

Apparatusdelivered

RS232

Reserved

1

Router

2

Connected for 230V~

Ratedinput power :760 VA

Warning

Thisapparatus must be earthed

Power

Made in China

4445 43

figure 2.3: Front and rear views of the voice alarm controller

6 BGM zone selectors - Six buttons to select the

zones to which the BGM is distributed (see section

5.4). Each button has a green LED and a rotary
knob. The six green LEDs indicate the zones to
which BGM is distributed. The six rotary knobs are
local volume controls that can be used to adjust the
volume of the BGM in each zone.

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384041424647

32333435363739

7 BGM master volume control - A rotary knob to

set the master volume of the BGM (see section 5.4).

8 BGM source selector - A button to select the

BGM source (CD/Tuner or Aux). The selected source
is indicated with a green LED (see section 5.4).

9 BGM tone controls - Two rotary knobs to control

the high and low frequencies of the BGM (see
section 5.4).

Plena Voice Alarm System | Basic System Manual | System Overview en | 14

10 All call button - A button to select all zones. This

button is only available in the emergency state (see
section 5.6).

11 Indicator test button - A button to test all LEDs

on the front panel of the voice alarm controller. All
LEDs are lit as long as the button is pushed (see
section 5.7).

12 Emergency button - A push button to put the

system in the emergency state (see section 5.6).

13 Alert message button - A button to select the

alert message. This button is only available in the
emergency state (see section 5.6).

14 Alarm message button - A button to select the

default alarm message. This button is only available
in the emergency state (see section 5.6).

15 Microphone socket - A socket to connect the

hand-held emergency microphone (see section 3.6).

16 Bracket - A bracket for the hand-held emergency

microphone that is supplied with the voice alarm
controller.

17 Monitoring speaker - Built-in monitoring

speaker.

18 Zone outputs - Six zone outputs to connect

loudspeakers to the voice alarm controller. Each
zone output consists of two loudspeaker line outputs
(see section 3.10).

19 Override outputs - Six volume override outputs to

override local volume controls in each zone (see
section 3.11).

20 Status outputs - Three status outputs to send the

status of the Plena Voice Alarm System to third party
equipment (see section 3.14).

21 Trigger inputs/24 V DC output - Twelve trigger

inputs to receive signals from third party equipment
and one 24 V(DC) output. Except for the VOX
switch input and the 24V DC out output, these must
be configured with the configuration software and
are therefore not used in basic systems (see section

3.13).

22 Call station sockets - Two redundant RJ45

sockets to connect call stations (LBB1956/00) to the
voice alarm controller (see section 3.8).

23 Service settings - A set of DIP switches to service

the voice alarm controller. Do not change the
positions of the switches.

24 Calibration switch - A switch to calibrate the

impedances of the loudspeaker lines for loudspeaker
supervision (see section 4.5.5.3).

25 Configuration settings - A set of DIP switches to

configure the voice alarm controller (see section 4.2).

26 PC socket - A USB socket to connect the voice

alarm controller to a PC. Not for use in basic
systems.

27 Emergency microphone volume control - A

rotary knob to set the volume of the hand-held
emergency microphone.

28 Reserved - For future use.
29 Reserved - For future use.
30 Voltage selector - A voltage selector to select the

local mains voltage (see section 3.15).

31 Power switch - A switch to switch the voice alarm

controller on and off (see section 5.1).

32 Ground - A connection to electrically ground the

voice alarm controller.

33 Mains power inlet - A socket to connect the voice

alarm controller to the mains power (see section

3.15).

34 Router socket - An RJ45 socket to connect voice

alarm routers (LBB1992/00) to the voice alarm
controller. Not for use in basic systems.

35 Remote control panel socket - Two redundant

RJ45 sockets to connect remote control panels
(LBB1995/00, LBB1996/00, LBB1997/00) to the
voice alarm controller. Not for use in basic systems.

36 Monitoring speaker volume control - A rotary

knob to set the volume of the monitoring
loudspeaker.

37 Digital message volume control - A rotary

knob to set the volume of the digital business
messages. This volume control does not influence
the volume of the emergency messages.

38 Mic/line input with VOX functionality - An

XLR socket and a 6.3 mm jack with voice-activated
(VOX) functionality to connect a microphone or line
input to the voice alarm controller (see section 3.13).
The VOX settings are configured with the DIP
switches and the source switch (see section 4.6).

39 PC Call station input - An input to connect a PC

call station. Not for use in basic systems.

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Plena Voice Alarm System | Basic System Manual | System Overview en | 15

40 BGM inputs - Two inputs to connect background

music sources. Each input consists of two cinch
sockets (see section 3.7).

41 Line output - A line output to connect an external

recording device to record the audio of the Plena
Voice Alarm System (see section 3.12).

42 External power amplifier (output) - An XLR

socket to connect an external power amplifier (see
section 3.9). This socket is used in combination with
the external power amplifier input (no. 47).

43 Trigger outputs - Two general purpose trigger

outputs. Not for use in basic systems.

44 Internal power amplifier output - Three pins

that provide the 100 V audio signal of the internal
power amplifier of the voice alarm controller.

45 Call output - An output that provides the call audio

of the Plena Voice Alarm System.

46 Back-up power inlet - An inlet to connect a back-

up power supply to the voice alarm controller (see
section 3.15).

47 External power amplifier (input) - An input to

connect an external power amplifier (see section 3.9).
These pins are used in combination with the external
power amplifier output (no. 42).

2.4 Call station

2.4.1 Introduction

The LBB1956/00 Call Station can be connected to the
LBB1990/00 Voice Alarm Controller to make business
calls. The call station is connected to the voice alarm
controller using standard Cat-5 Ethernet cable.

figure 2.4: Call Station

The call station is not supervised. For compliance to
evacuation standards, the Plena Voice Alarm System
disables the call station during emergency calls.

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Plena Voice Alarm System | Basic System Manual | System Overview en | 16

2.4.2 Overview

See figure 2.5 for an overview of the controls, indicators
and connectors on the call station:
1 Power indicator - A green LED to indicate that

the call station is powered on.

2 Zone selection buttons - Six buttons to select the

zones to which the business call is distributed (see
section 5.5). Each button has a green LED, which
indicates the zones to which the business call is
distributed.

3 ‘All call’ selector - A button to select all zones

(see section 5.5).

4 Push-to-talk button - A push-to-talk (PTT) button

to start the business call.

Plena

1

5 Status indicators - Three LEDs that indicate the

status of the call station (see section 5.5).

6 Keypad connector - A connector to connect call

station keypads (LBB1957/00) to the call station.

7 Configuration settings - A set of DIP switches to

configure the call station (see section 4.7).

8 Power supply inlet - A socket to connect a

24 V(DC) power supply (see section 3.8).

9 System sockets - Two redundant RJ45 sockets to

connect the call station to the voice alarm controller
(LBB1990/00, see section 3.8).

2

3

5

4

figure 2.5: Top and bottom views of the call station

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6 7

ON

8

9

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