Honeywell 25-50ZST, 25-50ZS, 50ZST User Manual

Voice Evacuation Control Panels

AUDIO•COMMAND•CENTER•25/50

AUDIO•COMMAND•CENTER•25/50ZS

AUDIO•COMMAND•CENTER•25/50ZST

Instruction Manual

Document 51889
6/8/2010 Rev:

P/N 51889:E1 ECN 10-278

E1

Fire Alarm System Limitations

While a fire alarm system may lower insurance rates, it is not a substitute for fire insurance!

An automatic fire alarm system—typically made up of
smoke detectors, heat detectors, manual pull stations, audible
warning devices, and a fire alarm control panel with remote
notification capability—can provide early warning of a develop­ing fire. Such a system, however, does not assure protection
against property damage or loss of life resulting from a fire.

The Manufacturer recommends that smoke and/or heat detec­tors be located throughout a protected premise following the
recommendations of the National Fire Protection Association
Standard 72 (NFPA 72), manufacturer's recommendations,
State and local codes, and the recommendations contained in
the Guides for Proper Use of System Smoke Detectors, which
are made available at no charge to all installing dealers.
These documents can be found at http://www.systemsen­sor.com/html/applicat.html. A study by the Federal Emer­gency Management Agency (an agency of the United States
government) indicated that smoke detectors may not go off in
as many as 35% of all fires. While fire alarm systems are
designed to provide early warning against fire, they do not
guarantee warning or protection against fire. A fire alarm sys­tem may not provide timely or adequate warning, or simply
may not function, for a variety of reasons:

Smoke detectors may not sense fire where smoke cannot
reach the detectors such as in chimneys, in or behind walls, on
roofs, or on the other side of closed doors. Smoke detectors
also may not sense a fire on another level or floor of a building.
A second-floor detector, for example, may not sense a first­floor or basement fire.

Particles of combustion or “smoke” from a developing fire
may not reach the sensing chambers of smoke detectors
because:

• Barriers such as closed or partially closed doors, walls, or
chimneys may inhibit particle or smoke flow.

• Smoke particles may become “cold,” stratify, and not reach
the ceiling or upper walls where detectors are located.

• Smoke particles may be blown away from detectors by air
outlets.

• Smoke particles may be drawn into air returns before
reaching the detector.

The amount of “smoke” present may be insufficient to alarm
smoke detectors. Smoke detectors are designed to alarm at
various levels of smoke density. If such density levels are not
created by a developing fire at the location of detectors, the
detectors will not go into alarm.

Smoke detectors, even when working properly, have sensing
limitations. Detectors that have photoelectronic sensing
chambers tend to detect smoldering fires better than flaming
fires, which have little visible smoke. Detectors that have ion­izing-type sensing chambers tend to detect fast-flaming fires
better than smoldering fires. Because fires develop in different
ways and are often unpredictable in their growth, neither type
of detector is necessarily best and a given type of detector
may not provide adequate warning of a fire.

Smoke detectors cannot be expected to provide adequate
warning of fires caused by arson, children playing with
matches (especially in bedrooms), smoking in bed, and violent
explosions (caused by escaping gas, improper storage of
flammable materials, etc.).

Heat detectors do not sense particles of combustion and
alarm only when heat on their sensors increases at a predeter­mined rate or reaches a predetermined level. Rate-of-rise
heat detectors may be subject to reduced sensitivity over time.
For this reason, the rate-of-rise feature of each detector
should be tested at least once per year by a qualified fire pro­tection specialist. Heat detectors are designed to protect
property, not life.

IMPORTANT! Smoke detectors must be installed in the
same room as the control panel and in rooms used by the sys­tem for the connection of alarm transmission wiring, communi­cations, signaling, and/or power. If detectors are not so
located, a developing fire may damage the alarm system, crip­pling its ability to report a fire.

Audible warning devices such as bells may not alert people
if these devices are located on the other side of closed or
partly open doors or are located on another floor of a building.
Any warning device may fail to alert people with a disability or
those who have recently consumed drugs, alcohol or medica­tion. Please note that:

• Strobes can, under certain circumstances, cause seizures
in people with conditions such as epilepsy.

• Studies have shown that certain people, even when they
hear a fire alarm signal, do not respond or comprehend the
meaning of the signal. It is the property owner's responsi­bility to conduct fire drills and other training exercise to
make people aware of fire alarm signals and instruct them
on the proper reaction to alarm signals.

• In rare instances, the sounding of a warning device can
cause temporary or permanent hearing loss.

A fire alarm system will not operate without any electrical
power. If AC power fails, the system will operate from standby
batteries only for a specified time and only if the batteries have
been properly maintained and replaced regularly.

Equipment used in the system may not be technically com­patible with the control panel. It is essential to use only equip­ment listed for service with your control panel.

Telephone lines needed to transmit alarm signals from a
premise to a central monitoring station may be out of service
or temporarily disabled. For added protection against tele­phone line failure, backup radio transmission systems are rec­ommended.

The most common cause of fire alarm malfunction is inade­quate maintenance. To keep the entire fire alarm system in
excellent working order, ongoing maintenance is required per
the manufacturer's recommendations, and UL and NFPA stan­dards. At a minimum, the requirements of NFPA 72 shall be
followed. Environments with large amounts of dust, dirt or
high air velocity require more frequent maintenance. A main­tenance agreement should be arranged through the local man­ufacturer's representative. Maintenance should be scheduled
monthly or as required by National and/or local fire codes and
should be performed by authorized professional fire alarm
installers only. Adequate written records of all inspections
should be kept.

Limit-C1-2-2007

2 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010

Installation Precautions

Adherence to the following will aid in problem-free installation with long-term reliability:

WARNING - Several different sources of power can be
connected to the fire alarm control panel. Disconnect all

sources of power before servicing. Control unit and associ­ated equipment may be damaged by removing and/or insert­ing cards, modules, or interconnecting cables while the unit is
energized. Do not attempt to install, service, or operate this
unit until manuals are read and understood.

CAUTION - System Re-acceptance Test after Software
Changes: To ensure proper system operation, this product

must be tested in accordance with NFPA 72 after any pro­gramming operation or change in site-specific software. Re­acceptance testing is required after any change, addition or
deletion of system components, or after any modification,
repair or adjustment to system hardware or wiring. All compo­nents, circuits, system operations, or software functions known
to be affected by a change must be 100% tested. In addition,
to ensure that other operations are not inadvertently affected,
at least 10% of initiating devices that are not directly affected
by the change, up to a maximum of 50 devices, must also be
tested and proper system operation verified.

This system meets NFPA requirements for operation at 0-49º
C/32-120º F and at a relative humidity 93% ± 2% RH (non­condensing) at 32°C ± 2°C (90°F ± 3°F). However, the useful
life of the system's standby batteries and the electronic com­ponents may be adversely affected by extreme temperature
ranges and humidity. Therefore, it is recommended that this
system and its peripherals be installed in an environment with
a normal room temperature of 15-27º C/60-80º F.

Verify that wire sizes are adequate for all initiating and indi­cating device loops. Most devices cannot tolerate more than a
10% I.R. drop from the specified device voltage.

Like all solid state electronic devices, this system may
operate erratically or can be damaged when subjected to light­ning induced transients. Although no system is completely
immune from lightning transients and interference, proper
grounding will reduce susceptibility. Overhead or outside aerial
wiring is not recommended, due to an increased susceptibility
to nearby lightning strikes. Consult with the Technical Ser­vices Department if any problems are anticipated or encoun­tered.

Disconnect AC power and batteries prior to removing or
inserting circuit boards. Failure to do so can damage circuits.

Remove all electronic assemblies prior to any drilling, filing,
reaming, or punching of the enclosure. When possible, make
all cable entries from the sides or rear. Before making modifi­cations, verify that they will not interfere with battery, trans­former, or printed circuit board location.

Do not tighten screw terminals more than 9 in-lbs. Over­tightening may damage threads, resulting in reduced terminal
contact pressure and difficulty with screw terminal removal.

This system contains static-sensitive components.
Always ground yourself with a proper wrist strap before han­dling any circuits so that static charges are removed from the
body. Use static suppressive packaging to protect electronic
assemblies removed from the unit.

Follow the instructions in the installation, operating, and pro­gramming manuals. These instructions must be followed to
avoid damage to the control panel and associated equipment.
FACP operation and reliability depend upon proper installation.

Precau-D1-9-2005

FCC Warning

WARNING: This equipment generates, uses, and can

radiate radio frequency energy and if not installed and
used in accordance with the instruction manual may
cause interference to radio communications. It has been
tested and found to comply with the limits for class A
computing devices pursuant to Subpart B of Part 15 of
FCC Rules, which is designed to provide reasonable
protection against such interference when devices are
operated in a commercial environment. Operation of this
equipment in a residential area is likely to cause interfer­ence, in which case the user will be required to correct
the interference at his or her own expense.

Canadian Requirements

This digital apparatus does not exceed the Class A limits
for radiation noise emissions from digital apparatus set
out in the Radio Interference Regulations of the Cana­dian Department of Communications.

Le present appareil numerique n'emet pas de bruits
radioelectriques depassant les limites applicables aux
appareils numeriques de la classe A prescrites dans le
Reglement sur le brouillage radioelectrique edicte par le
ministere des Communications du Canada.

LiteSpeed™ is a trademark; and FireLite® Alarms is a registered trademark of Honeywell International Inc. Microsoft® and Windows® are registered
trademarks of the Microsoft Corporation.

©Tuesday, August 14, 2012 9:40 am by Honeywell International Inc. All rights reserved. Unauthorized use of this document is strictly prohibited.

Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 3

Software Downloads

In order to supply the latest features and functionality in fire alarm and life safety technology to our customers, we make
frequent upgrades to the embedded software in our products. To ensure that you are installing and programming the latest
features, we strongly recommend that you download the most current version of software for each product prior to
commissioning any system. Contact Technical Support with any questions about software and the appropriate version for
a specific application.

Documentation Feedback

Your feedback helps us keep our documentation up-to-date and accurate. If you have any comments or suggestions about
our online Help or printed manuals, you can email us.

Please include the following information:

•Product name and version number (if applicable)

•Printed manual or online Help

•Topic Title (for online Help)

•Page number (for printed manual)

•Brief description of content you think should be improved or corrected

•Your suggestion for how to correct/improve documentation

Send email messages to:

[e-mail]

Please note this email address is for documentation feedback only. If you have any technical issues, please contact
Technical Services.

4 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010

Table of Contents

Section 1: Product Description ............................................................................................. 13

1.1: Product Features ..........................................................................................................................................14

1.2: Specifications...............................................................................................................................................19

1.3: Controls and Indicators................................................................................................................................23

1.3.1: Single Zone Operation (ACC-25/50, ACC-25/50ZS, ACC-25/50ZST) ...........................................23

1.3.2: Dual Zone Operation (ACC-25/50 Only) ..........................................................................................23

1.3.3: RECORD/PLAYBACK ....................................................................................................................24

1.3.4: TROUBLE SILENCE .......................................................................................................................24

1.3.5: LEDs (visible with panel door closed): .............................................................................................24

1.3.6: ACC-ZPMK Zone Page Module (ACC-25/50ZS and ACC-25/50ZST Panels only) .......................24

1.3.7: ACC-FFT Fire Fighter Telephone Module (ACC-25/50ZST only) ...................................................25

1.3.8: ACC-EPM External Page Module.....................................................................................................25

1.3.9: Other System LEDs (located on main circuit board and modules) ...................................................25

1.4: Circuits.........................................................................................................................................................26

1.5: Components .................................................................................................................................................27

1.6: Optional Modules .......................................................................................................................................29

1.7: Getting Started .............................................................................................................................................30

1.7.1: ACC-25/50, Requiring up to 50 Watts of Audio Power....................................................................30

1.7.2: ACC-25/50 With ACC-25/50DA(s), Requiring Greater Than 50 Watts of Audio Power................30

1.7.3: ACC-25/50ZS & ACC-25/50ZST, Requiring up to 50 Watts of Audio Power................................30

1.7.4: ACC-25/50ZS & ACC-25/50ZST, Requiring Greater Than 50 Watts But Less Than 150 Watts....31

Section 2: Field Programming............................................................................................... 32

2.1: S1 DIP Switch Settings on ACC-25/50 Series Motherboard (ACC-MCB) ................................................36

2.2: S5 DIP Switch Settings on ACC-25/50 Series Motherboard (ACC-MCB) ................................................37

2.3: S3 DIP Switch Settings on ACC-25/50 Motherboard (ACC-MCB) ...........................................................37

2.4: S2 - Record Bypass Switch on ACC-25/50 Series Motherboard (ACC-MCB) ..........................................38

2.5: S4 - Battery Charger Switch on ACC-25/50 Series Motherboard...............................................................39

2.6: SW1 - Remote Microphone Installed Switch on ACC-FFT........................................................................39

2.7: SW2 - 2 Wire/4 Wire Connection on Telephone Loop................................................................................39

2.8: ACC-ZPMK Zone Page Module (ACC-25/50ZS & ACC-25/50ZST) .......................................................39

2.8.1: S1 DIP Switch Settings on ACC-ZPMK...........................................................................................40

2.8.2: S2 and S3 Addressing Rotary Switches ............................................................................................41

2.9: ACC-ZSM Zone Splitter Module (ACC-25/50ZS & ACC-25/50ZST) ......................................................41

Section 3: Installation.............................................................................................................42

3.1: Mounting Options........................................................................................................................................42

3.2: Backbox Installation ....................................................................................................................................42

3.2.1: Transformer Installation ....................................................................................................................45

3.3: Operating Power ..........................................................................................................................................46

3.4: Auxiliary DC Power Output Connections ...................................................................................................48

3.5: Input/Initiating Circuits ...............................................................................................................................48

3.6: Output Circuits.............................................................................................................................................49

3.6.1: Master Command Bus Output ...........................................................................................................49

3.6.2: Trouble Relay - TB1..........................................................................................................................51

3.6.3: AC Power Loss Relay - TB7 .............................................................................................................51

3.6.4: Notification Appliance Circuit (Speakers) ........................................................................................51

3.6.5: ACC-ZPMK Zone Page Module - ACS Link (ACC-25/50ZS & ACC-25/50ZST) .........................52

3.6.6: ACC-ZSM Zone Splitter Module (ACC-25/50ZS & ACC-25/50ZST) ............................................54

3.6.7: ACC-FFT Fire Fighter Telephone Module (ACC-25/50ZST Only) ..................................................55

3.7: UL Power-limited Wiring Requirements.....................................................................................................56

3.8: Installation of Option Modules ....................................................................................................................57

3.8.1: Audio Amplifier Module (ACC-AAM25) ........................................................................................57

3.8.2: 70.7 V

3.8.3: Local Playback Speaker Module (FC-LPS) ......................................................................................59

Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 5

Transformer Module (FC-XRM70) ................................................................................58

RMS

Table of Contents

3.8.4: ACC-EPM External Page Module.....................................................................................................60

Section 4: Operating Instructions ......................................................................................... 63

4.1: Switch Functions..........................................................................................................................................63

4.1.1: Single Zone Operation (ACC-25/50, ACC-25/50ZS, ACC-25/50ZST) ...........................................63

4.1.2: Dual Zone Operation (ACC-25/50 Only) ..........................................................................................63

4.1.3: RECORD/PLAYBACK ....................................................................................................................64

4.1.4: TROUBLE SILENCE .......................................................................................................................64

4.1.5: Record/Playback Button - Record Customized Messages.................................................................64

Recording Instructions..........................................................................................................................64

4.1.6: Record/Playback Button - Review Stored Message(s) ......................................................................65

4.1.7: Main Control Panel Keypad Labels...................................................................................................66

4.2: ACC-ZPMK Switch Functions (ACC-25/50ZS & ACC-25/50ZST) ..........................................................66

4.3: ACC-FFT Answer Call Push-Button (ACC-25/50ZST)..............................................................................67

4.4: LED Indicators.............................................................................................................................................67

4.4.1: LEDs Visible with Backbox Door Closed (Figure 4.1 on page 63) ..................................................67

4.4.2: ACC-ZMPK LEDs Visible with Backbox Door Closed (Figure 4.4 on page 66) ............................68

4.4.3: ACC-FFT LEDs Visible with Backbox Door Closed (Figure 3.15 on page 55)...............................69

4.4.4: LEDs Visible with Door Open and Optional Dress Panel Removed (Figure 1.1 & Figure 1.2).......69

4.5: Operation......................................................................................................................................................70

4.5.1: Fire Alarm..........................................................................................................................................70

4.5.2: Fire Alarm Restoral ...........................................................................................................................70

4.5.3: Manual Evacuation/Alert...................................................................................................................70

4.5.4: Manual Evacuation/Alert Restoral ....................................................................................................71

4.5.5: Audio On/Off: ACC-25/50 Single Zone and ACC-25/50ZS/T .........................................................71

4.5.6: All Call: ACC-25/50, Single Zone Configuration .............................................................................71

All-Call General Page Using Local Microphone..................................................................................72

All-Call General Page Using Optional Remote Microphone ...............................................................72

All-Call Emergency Page Using Local Microphone ............................................................................72

All-Call Emergency Page Using Optional Remote Microphone..........................................................72

All-Call During FACP Activated Alarm ..............................................................................................72

All-Call During Manual Evacuation/Alert ...........................................................................................72

All-Call With Distributed Audio Panels...............................................................................................72

4.5.7: All-Call: ACC-25/50ZS & ACC-25/50ZST......................................................................................72

All-Call General Page Using Local/Integral Microphone ....................................................................72

All-Call General Page Using Optional Remote Microphone ...............................................................73

All-Call General Page Using Optional RPJ-F Remote Keyswitch via the Optional Fire Fighter Tele-

phone Module:......................................................................................................................................73

All-Call Emergency Page Using Local/Integral Microphone ..............................................................73

All-Call Emergency Page Using Optional Remote Microphone..........................................................73

All-Call Emergency Page Using Optional RPJ-F Remote Keyswitch via the Fire Fighter Telephone

Module..................................................................................................................................................73

All-Call During FACP Activated Alarm ..............................................................................................73

All-Call During Manual Evacuation/Alert ...........................................................................................73

4.5.8: Paging: ACC-25/50 Single Zone .......................................................................................................73

General Page Using Local/Integral Microphone ..................................................................................73

General Page Using Optional Remote Microphone .............................................................................73

Emergency Page Using Local/Integral Microphone.............................................................................74

Emergency Page Using Optional Remote Microphone........................................................................74

4.5.9: Paging: ACC-25/50 Dual Zone .........................................................................................................74

General Page Using Local/Integral Microphone ..................................................................................74

General Page Using Optional Remote Microphone .............................................................................74

Emergency Page Using Local/Integral Microphone.............................................................................74

Emergency Page Using Optional Remote Microphone........................................................................74

4.5.10: Paging: ACC-25/50ZS & ACC-25/50ZST ......................................................................................74

General Page Using Local/Integral Microphone ..................................................................................74

General Page Using Optional Remote Microphone .............................................................................75

6 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010

Table of Contents

General Page Using the Optional RPJ-F Remote Keyswitch via the Optional Fire Fighter Telephone

Module..................................................................................................................................................75

Emergency Page Using Local/Integral Microphone ............................................................................75

Emergency Page Using Optional Remote Microphone........................................................................75

Emergency Page Using Optional RPJ-F Remote Keyswitch via the Optional Fire Fighter Telephone

Module..................................................................................................................................................75

4.5.11: Fire Fighter Telephone: ACC-25/50ZST Only ...............................................................................75

Communication on the Telephone Loop ..............................................................................................75

Annunciation of Remote Telephone Locations (MS-9600 or MS-9200UDLS only) ..........................76

4.5.12: Trouble Condition Response ...........................................................................................................76

4.5.13: Trouble Condition Restoral .............................................................................................................78

Section 5: Application Examples .......................................................................................... 80

5.1: One Speaker Circuit on ACC-25/50 ............................................................................................................80

5.2: One Speaker Circuit With Backup on ACC-25/50......................................................................................81

5.3: Two Speaker Circuits on ACC-25/50 ..........................................................................................................83

5.4: Two Speaker Circuits on ACC-25/50 ..........................................................................................................85

5.5: ACC-25/50ZS & ACC-25/50ZST Zone Splitting Applications..................................................................87

5.5.1: 25 Watt Zone Splitting - Eight Speaker Circuits, Style Y (Class B).................................................87

5.5.2: 25 Watt Zone Splitting - Four Speaker Circuits, Style Z (Class A) ..................................................89

5.5.3: 50 Watt Zone Splitting - Eight Speaker Circuits...............................................................................91

5.6: ACC-25/50 and ACC-25/50DA Installation ..............................................................................................93

5.7: 16 Theater Cineplex Utilizing ACC-25/50ZS With ACC-25/50DAZS ......................................................95

5.8: Audio Command Center 24 Zone System ...................................................................................................96

Section 6: Power Supply Calculations..................................................................................98

6.1: Overview......................................................................................................................................................98

6.2: Calculating the AC Branch Circuit..............................................................................................................98

6.3: Calculating the System Current Draw .........................................................................................................98

6.3.1: Overview ...........................................................................................................................................98

6.3.2: How to use Table 6.2 to calculate system current draws..................................................................99

6.4: Calculating the Battery Size ......................................................................................................................100

6.4.1: NFPA Battery Requirements ...........................................................................................................100

6.4.2: Selecting and Locating Batteries .....................................................................................................100

Appendix A: Digital Voice Messages.................................................................................. 102

Appendix B: Addressable Module Connections................................................................ 103

Appendix C: Wiring Requirements......................................................................................104

Appendix D: Programmed Activation by FACP ................................................................. 105

D.1: MS-9600, MS-9200UDLS and MS-9200UD ...........................................................................................106

D.1.1: Overview.........................................................................................................................................106

D.1.2: Basic MS-9600/MS-9200UD/MS-9200UDLS & ACC-25/50ZS/T Step-By-Step Install/Setup ...106

D.1.3: Wiring From ACC-25/50ZS or ACC-25/50ZST to FACP.............................................................107

D.1.4: ACC-25/50ZS and ACC-25/50ZST Switch Settings .....................................................................108

D.1.5: FACP Programming .......................................................................................................................109

Programming Tips for MS-9600, MS-9600LD, MS-9200UDLS, and MS-9200UD.........................110

Message Assignment - Speaker Specific............................................................................................110

Message Assignment - Zone Specific ................................................................................................112

Fire Fighter Telephone SLC Point Assignment .................................................................................115

D.2: MS-5210UD..............................................................................................................................................118

D.2.1: Overview.........................................................................................................................................118

D.2.2: MS-5210UD Individual Zone Control With One or Two Messages..............................................118

ACC-25/50ZS/T DIP Switch Settings................................................................................................119

MS-5210UD Programming ................................................................................................................120

D.2.3: MS-5210UD All Zone Activation With One to Five Messages.....................................................120

ACC-25/50ZS and ACC-25/50ZST Switch Settings .........................................................................121

Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 7

Table of Contents

ACM-8RF Programming....................................................................................................................121

MS-5210UD Programming ................................................................................................................121

D.3: MS-9200(E) ..............................................................................................................................................122

D.3.1: Overview.........................................................................................................................................122

D.3.2: Basic MS-9200 & ACC-25/50ZS/T Step-By-Step Install/Setup....................................................122

D.3.3: Wiring From ACC-25/50ZS or ACC-25/50ZST to MS-9200(E)...................................................124

ACC-25/50ZS & ACC-25/50ZST Switch Settings ............................................................................125

D.3.4: FACP Programming .......................................................................................................................125

D.4: MS-5UD-3/7 and MS-10UD-3/7 ..............................................................................................................127

D.4.1: Overview.........................................................................................................................................127

D.4.2: Basic ANN-BUS Step-By-Step Install/Setup .................................................................................127

D.4.3: ACC-ZPMK DIP Switch 1 Settings on ACC-25/50ZS and ACC-25/50ZST ................................128

D.4.4: Wiring From ACC-25/50ZS or ACC-25/50ZST to FACP.............................................................129

D.4.5: FACP Programming .......................................................................................................................130

Index ...................................................................................................................................... 138

8 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010

This control panel has been designed to comply with standards set forth by the following regulatory agencies:

• Underwriters Laboratories Standard UL 864

• NFPA 72 National Fire Alarm Code

Before proceeding, the installer should be familiar with the following documents.

NFPA Standards

This Fire Alarm Control Panel complies with the following NFPA Standards:

NFPA 72 National Fire Alarm Code

Note: Audible signal appliances used in public mode applications, are required to have
minimum sound levels of 75 dBA at 10 feet (3 meters) and a maximum level of 120 dBA
at the minimum hearing distance from the audible appliance.

To ensure that the appliance is clearly heard, the audible appliance sound level must be at
least 15 dBA above the average ambient sound level or 5 dBA above the maximum sound
level with a duration of at least 60 seconds, depending on which level is greater, with the
sound level being measured 5 feet (1.5 meters) above the floor.

Underwriters Laboratories Documents:

UL 38 Manually Actuated Signaling Boxes
UL 217 Smoke Detectors, Single and Multiple Station
UL 228 Door Closers–Holders for Fire Protective Signaling Systems
UL 268 Smoke Detectors for Fire Protective Signaling Systems
UL 268A Smoke Detectors for Duct Applications
UL 346 Waterflow Indicators for Fire Protective Signaling Systems
UL 464 Audible Signaling Appliances
UL 521 Heat Detectors for Fire Protective Signaling Systems
UL 864 Standard for Control Units for Fire Protective Signaling Systems
UL 1481 Power Supplies for Fire Protective Signaling Systems
UL 1638 Visual Signaling Appliances
UL 1711 Amplifiers for Fire Protective Signaling Systems
UL 1971 Signaling Devices for Hearing Impaired

Other:

NEC Article 250 Grounding

NEC Article 300 Wiring Methods

NEC Article 760 Fire Protective Signaling Systems

Applicable Local and State Building Codes

Requirements of the Local Authority Having Jurisdiction (LAHJ)

Fire•Lite Documents

Fire•Lite Device Compatibility Document Document #15384

MS-5UD/10UD Series Technical Manual Document #52626

FCPS-24F(E) Field Charger/Power Supply Document #50079

FCPS-2404 Field Charger/Power Supply Document #51486

FCPS-24FS6/8 Field Charger/Power Supply Document #51883

MS-9200(C/E) Technical Manual Document #51003

MS-9200UD Technical Manual Document #51906

MS-9200UDLS Technical Manual Document #52750

MS-9600 Technical Manual Document #51335

MS-5210UD Technical Manual Document #50193

ACC-25/50DA Technical Manual Document #52265

SLC Wiring Manual Document #51309

This product has been certified to comply with the requirements in the Standard for Control Units and Accessories for Fire
Alarm Systems, UL 864, 9th Edition. Operation of this product with products not tested for UL 864, 9th Edition has not
been evaluated. Such operation requires the approval of the local Authority Having Jurisdiction (AHJ).

Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 9

Audio Riser

25W Speaker Circuit

25W Speaker Circuit

Master Command Bus

FACP Control

ACC-25/50

FACP Control

Master Command Bus

Audio Riser

To Additional ACC-25/50DA Panels

25W Speaker Circuit

25W Speaker Circuit

25W Speaker Circuit

25W Speaker Circuit

ACC-25/50DA

ACC-25/50DA

ACC-25/50 System

Audio Command Center System Diagram

The FireVoice (ACC-25/50) can be used for systems

requiring up to 50 watts of audio power. Compatible

FACPs can be used for automatic control.

The Distributed Audio Panel (ACC-25/50DA) can

be used to increase audio power above 50 watts.

1. The FACP contorls the audio system via the CMD

inputs on the ACC-25/50 and ACC-25/50DA.

2. The Audio Riser connects the audio output of the

ACC-25/50 to each of the ACC-25/50DA(s).

3. The Master Command Bus provides an All-Call trigger

from the ACC-25/50 to the ACC-25/50DA(s).

accdadistsys.wmf

10 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010

Audio Command Center Zone System

Up to 24 Zones @ 150W (max.)

Speaker Circuit #16

1. The FACP controls the audio system via the ACS Link or CMD

inputs on the ACC-25/50ZS

2. The Audio Riser connects the audio output of the ACC-25/50ZS to

each of the ACC-25/50DAZS(s) to distribute alarm or paging

audio.

3. The ACC-25/50ZS uses the Control Serial Link to control the

routing of the alarm or paging audio.

4. Riser conductors must be installed in accordance with the

survivability from attack by fire requirements in National Fire

Alarm Code, NFPA 72.

Speaker Circuit #9

Speaker Circuit #17

Speaker Circuit #24

ACC Control Serial Link (RS-485)

Audio Riser

Speaker Circuit #1

Speaker Circuit #8

ACC Control Serial Link (RS-485)

Automatic Control via the

ACS Link or CMD Input

ACC-25/50DAZS

ACC-25/50ZS

ACC-25/50DAZS

ACCDAZSDISTSYS2.wmf

Audio Riser

Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 11

Speaker Circuit #16

1. The FACP controls the audio system via the ACS Link or CMD

inputs on the ACC-25/50ZST.

2. The Audio Riser connects the audio output of the ACC-25/50ZST to

each of the ACC-25/50DAZS(s) to distribute alarm or paging audio.

3. The ACC-25/50ZST uses the Control Serial Link to control the

routing of the alarm or paging audio.

4. Riser conductors must be installed in accordance with the

survivability from attack by fire requirements in National Fire Alarm

Code, NFPA 72.

Speaker Circuit #9

Speaker Circuit #17

Speaker Circuit #24

ACC Control Serial Link (RS-485)

Audio Riser

Speaker Circuit #1

Speaker Circuit #8

ACC Control Serial Link (RS-485)

Automatic Control via the

ACS Link or CMD Input

ACC-25/50DAZS

ACC-25/50ZST

ACC-25/50DAZS

Audio Riser

RPJ-F

FPJ-F

up to 24 remote

FireFighter

Telephones

Audio Command Center Zone System With FireFighter Telephone

Up to 24 Zones @ 150W (max.)

ACCDAZSDISTSYS3.wmf

12 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010

Section 1: Product Description

The ACC-25/50 Series consists of the AUDIO•COMMAND•CENTER•25/50 (ACC-25/50), the
AUDIO•COMMAND•CENTER•25/50 Zone System (ACC-25/50ZS), and the AUDIO•COM­MAND•CENTER•25/50 Zone System with Telephone (ACC-25/50ZST) which are single channel,
25 watt, 25 VRMS, emergency voice evacuation panels. The ACC-25/50 provides up to two
speaker circuits while the ACC-25/50ZS and ACC-25/50ZST support up to eight speaker circuits.
Each panel provides the ability to record five field programmable messages (up to 60 seconds total
message duration) with an integral microphone or from an external audio source. An integral
power supply with battery charger supplies operational power. An ACC-AAM25 audio amplifier is
provided standard with each base unit. An optional second ACC-AAM25 amplifier is also avail­able for backup purposes or to provide an additional channel of 25 watts. Optional 70 VRMS con­version modules are also available for installations where 70 VRMS speakers are to be installed or
already exist. An optional External Page Module (ACC-EPM) is available for interfacing to nonfire
paging systems. The modular design allows for ease-of-serviceability.

Automatic activation of the ACC-25/50 by an FACP is possible via the five Command Input Cir­cuits (CMD). The ACC-25/50ZS and ACC-25/50ZST can be automatically activated by the CMD
inputs or via the ACS serial communications link from the MS-9600, MS-9200UDLS, MS­9200UD, MS-9200(E) and MS-5210UD FACPs.

Two Command Input Circuits can be independently field programmed for activation by an FACP
Notification Appliance Circuit reverse polarity or by closure of a supervised normally open contact
and three Command Input Circuits activate on contact closure. CMD 1 and CMD 2 provide termi­nals for NAC input and output to allow installation of the audio panel anywhere along the NAC cir­cuit being used to activate it. Options via the Command Inputs allow one 60 second message, two
30 second messages, three 20 second messages, four 15 second messages or five 12 second mes­sages.

The ACC-25/50ZS and ACC-25/50ZST include an ACC-ZPMK Zone Page Module with keypad
and an ACC-ZSM Zone Splitter Module. These modules provide up to eight speaker circuits that
may be manually or automatically activated.

The ACC-25/50ZST includes an ACC-FFT Fire Fighter Telephone Module with keypad which
provides indications of phone activation, remote page activation, remote microphone activation and
corresponding trouble conditions. Additionally, up to 24 telephone circuits can be annunciated at
the ACC-FFT by connecting addressable monitor modules to the optional FPJ-F or RPJ-F Remote
Page Jacks.

Significant technological enhancements set the ACC-25/50 Series apart from other voice panels.

These enhancements include full supervision in both active (alarm or music) and standby condi­tions. Supervision is provided for:

 amplifier outputs

 field wiring (shorts and opens)

 message generator

 all tone generators

 microphone

 telephones (optional)

If the message generator fails, the system automatically reverts to the primary tone generator. If the
primary tone generator fails, one of three backups become enabled.

Power is fed independently

to each amplifier so that a short circuit in one amplifier will not shut
down the other. Full output power of 25 watts per amplifier is generated while in a low battery con­dition. Power is not diminished when the optional 70 V

transformer module is installed. Audio

RMS

is amplified utilizing modern integrated circuits as opposed to transformer technology. This pro­vides for very low signal distortion for crystal clear audio.

Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 13

Product Description Product Features

Primary applications for the audio panels include structures such as restaurants, schools, auditori­ums, places of worship, buildings with occupancies over 50, etc. The ACC-25/50 Series is
designed to interface directly to addressable or conventional fire alarm control panels or can be
used with the Audio Command Center Distributed Audio (ACC-25/50DA) panel to distribute audio
in systems that require more than 50 watts.

1.1 Product Features

• 25 watts of 25 V

• Optional 70.7 V

audio power (expandable to 50 watts) per panel

RMS

conversion module available for each amplifier (note that speaker wiring

RMS

continues to be supervised in standby, alarm and when background music is playing with this
option module installed)

• Modular design for maximum system flexibility

• Unobstructed module access and removable terminal blocks for ease of servicing and module

replacement

• Designed to allow easy system expansion

• Five Command Input Circuits:

 CMD1 and CMD2 are field selectable to be activated from 12 or 24 VDC Notification

Appliance Circuits (reverse polarity) or contact closures

 CMD3, CMD4, and CMD5 are activated by contact closures

• Speaker Circuits

 single Style Y or Z speaker circuit (one ACC-AAM25 Audio Amplifier provided with base

unit)

 two Style Y or Style Z speaker circuits (with optional second ACC-AAM25 Audio

Amplifier installed)

 eight Style Y or four Style Z speaker circuits (only on ACC-25/50ZS or ACC-25/50ZST

Panel with ACC-ZSM Zone Splitter Module)

• ACC-25/50ZS and ACC-25/50ZST can be controlled by an FACP via the ACS (EIA-485) link

to the ACC-ZPMK. ACS compatible FACPs include the MS-9600, MS-9200(E), MS­9200UD, MS-9200UDLS and MS-5210UD.

• Integral supervised microphone

• Microphone time-out feature which reverts back to prerecorded message if emergency page

exceeds three minutes

• Standard, prerecorded message:

“May I have your attention please. May I have your attention please. The signal you
have just heard indicates a report of a fire in this building. Please proceed to the nearest
exit and leave the building. Do not re-enter the building unless directed to do so by the
proper authorities.”

• Field-selectable message and custom message field recording capability using local

microphone or two compatible audio input jacks

• Two External Audio Inputs for recording custom message from compatible source or playing

music over the system with prior approval of the local Authority Having Jurisdiction (AHJ)

• Multiple duration message capability: one 60 second, two 30 second, three 20 second, four 15

second or five 12 second custom messages

• Integral tone generators field selectable for steady, slow-whoop, high-low or chime tones

• Higher wattage capability available by using the Audio Command Center Distributed Audio

(ACC-25/50DA) panel

• Powered by integral AC power supply or batteries during AC fail

• Programmable delay of immediate, 2 hours or 6 hours reporting of AC Loss

• Piezo sounder for local trouble

14 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010

Product Features Product Description

• Two Form-C trouble relays:

 System Trouble Relay - TB1

 AC Power Loss Relay - TB7

• 35 mA Special Application (auxiliary power) output for addressable modules when interfaced

with the Fire•Lite MS-9200(E) or MS-9600 FACP or equivalent and End-of-Line power
supervision relays

• Integral Dress Panel

• Optional ACC-TR semi-flush trim ring

• ACC-FFT Fire Fighter Telephone module for control and annunciation of up to 24 remote

telephone jacks (installation in ACC-25/50ZST only)

• Fire Fighter Handset (FHS-F) used to communicate over the telephone circuit connected to the

ACC-FFT (ACC-25/50ZST only)

• Fire Fighter Phone Jack FPJ-F provides plug-in location for the FHS-F (ACC-25/50ZST only)

• Remote Page Jack RPJ-F provides plug-in location for the FHS-F and All-Call paging

capability (ACC-25/50ZST only)

• Fire Fighter Handset Cabinet FHSC-RF (recess mount) or FHSC-SF (surface mount) is used to

store five Fire Fighter Handsets (FHS-F) (ACC-25/50ZST only)

• Optional FC-RM Remote Microphone (includes cabinet and FC-MIM Microphone Interface

Module). Refer to the FC-RM Product Installation Document #51247 for additional
information

• Optional ACC-EPM External Page Module for interfacing to non-fire paging systems

• Optional local playback speaker (FC-LPS)

• System Status LEDs (refer to “Controls and Indicators” on page 23)

• Master Command Bus output for All-Call paging control of Distributed Audio panels in non-

zone split systems

Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 15

AUX

POWER

CMD1

CMD2

CMD3

CMD4

CMD5

MASTER
CMD OUT

AC LO SS

TB4

TB2 TB5

TB8

TB9

TB10

TB6

TB7

P1

TB1

NC NO C

C NO NC

1 2

1 2 3

1 2 3 4 1 2 3 4 1 2 3 4

Form-C AC

Loss Relay

nonsupervised

Programmable

Output Trigger -

(supervised, power-

limited) activation by

Emergency and

Nonemergency

paging - active
polarity shown

4.7K ELR ½ watt
P/N: 27072

+ + - -

+ -

Special

Application

Power 35 mA

(nonsupervised,

power-limited)

- + + -

CMD1 Input

Trigger by contact

closure or NAC
reverse polarity

(ELR required) -

alarm polarity

shown

OUT IN

CMD2 Input

Trigger by contact

closure or NAC
reverse polarity

(ELR required) -

alarm polarity

shown

OUT IN

Form-C Trouble

Relay

(nonsupervised)

Connector P5

FC-MIM or

ACC-FFT

Local Speaker

Connector

RCA Jack

Local Microphone

Connector

HOT

NEUTRAL

EARTH

Connector for

Transformer

ac25mnt1.wmfR

AC Power Only (supervised,

nonpower-limited)

Refer to AC Power in Section

“Specifications” on page 19

Personal

Computer

Source

- + + -

+ -

+ -

+ -

CMD3, CMD4 & CMD5 Input

Trigger by contact closure

alarm polarity shown (inputs only)

ACC-ZSM

All CMD inputs are supervised, power-limited. When contact closure is
employed, a 4.7K ELR, P/N: 27072 is required.

(supervised,

nonpower-limited)

Figure 1.1 Audio Command Center Board

Product Description Product Features

16 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010

Product Features Product Description

!

J1

T1

TB1 TB2

P1

SW1

BACK-UP ON

CKT TBL

AMP SUPV

J1

TB1 TB2

P1

SW1

BACK-UP ON

CKT TBL

AMP SUPV

J1

TB2

TB2

TB1 TB1

1 2 3 4 5 6

1 2 3 4 5 6

1 2 3 4

1 2 3 4

S2

S1

BACK-UP ON

+ - + -

+ - + -

S4

AC25MNT2.wmf

+ - + -

+ - + -

Speaker Circuits are supervised

and power-limited

ELR Resistor required only for

Style Y (Class B) circuits.

4.75 K, 1 watt P/N: 75470

Figure 1.2 Command Board With Amplifiers

Backup Audio

In Out

Backup Audio

In Out

Optional 2nd or

Backup Amplifier

ACC-AAM25

Field

Programmable

Option Switches

S3, S5, and S1

Controls and

System Status

Indicators

(Switch S1 of 2nd amplifier

shown in Backup ‘OFF’ condition

FC-XRM70

Optional 70.7 VRMS Plug-in

Conversion Module

(available for each amplifier)

Battery Charger

Disable Switch
(switch shown for
charger enabled)

LEDs on each amplifer

Amp

Supervision

Circuit

Trouble

Standard

Main Amplifier #1

ACC-AAM25

CAUTION: OBSERVE PROPER POLARITY

MATCH PROPER POLARITY CONNECTIONS TO FIELD WIRING AND SPEAKERS. POLARITY
SHOWN IS IN THE STANDBY AND ALARM CONDITIONS.

Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 17

Product Description Product Features

TB1 TB2

P1

SW1

BACK-UP ON

CKT TBL

AMP SUPV

J1

TB1 TB2

P1

SW1

BACK-UP ON

CKT TBL

AMP SUPV

J1

TB1

J1

1 2 3 4 5 6 7 8

ON

S1

ON

S3

0

5

4

3

2

1

9

8

7

6

0

5

4

3

2

1

9

8

7

6

S2

TENS

ONES

AAM
1 & 2

AAM1

JP1

TB1

TB9

TB4

SW2

SW1

TB5

TB6

CLASS A

CLASS B

1 2 3 4 5 6 7 8

ON

S1

S3

0

5

4

3

2

1

9

8

7

6

0

5

4

3

2

1

9

8

7

6

S2

AAM
1 & 2

AAM1

SW2

SW1

TB1

TB9

TB4

TB5

TB6

+ -

+ -

+

-

+

-

+

-

+

-

+

-

+

-

+

-

+

-

TB1

TB2

TB1

TB4

TB5

TB6

+

-

+

-

+

-

+

-

+

-

+

-

+

-

+

-

+

+

-

-

Figure 1.3 ACC-25/50ZS Main Board With Modules

AC25ZSMNTa.wmf

1 2 3 4 1 2 3 4

Circuits are power-limited and

supervised and require ELRs

4.75K P/N: 27589

1 2 3 4

1 2 3 4

1 2 3 4

5
4
3
2
1

5
4
3
2
1

5
4
3
2
1

5
4
3
2
1

5
4
3
2
1

5
4
3
2
1

5
4
3
2
1

5
4
3
2
1

Speaker Circuits are
supervised, power-limited

supervised

(nonsupervised)

Style Y (Class B)

To Speakers

To Speakers

To Speakers

To Speakers

To Speakers

To Speakers

To Speakers

shield

shield

shield

shield

Dummy Load all

unused circuits with

4.75 K resistor

Style Z (Class A)

To Speakers

shield

Speaker Return

Page

Active

LED

To Speakers

shield

Speaker Return

To Speakers

shield

Speaker Return

To Speakers

shield

Speaker Return

Jumper all unused circuits:

+ to + and - to -

Field Programmable

Option Switches for

Speaker Circuits

ACS Addressing

Switches for EIA-485

Communications with

FACP

ON

TENS ONES

ACC-ZPMK

Zone Page Module

ACS (EIA-485)

Link to FACP

to ACS devices down-stream

ACC-EPM

External Page Module

Class A

Class B

from external page

system audio

(600, 700 mV

RMS

)

contact closure
from external
page system

Select 4 Class
A or 8 Class B

Speaker

Circuits

(shown for 8

Class B

Speaker

Circuits)

To Amplifier #1

To Amplifier #2

Select Single

or Split

Amplifier

Configuration

(shown set for

Split Amplifier
configuration)

ACC-ZSM

Zone Splitter

Module

Zone 1

Zone 2

Zone 3

Zone 4

Zone 5

Zone 6

Zone 7

Zone 8

Zone 1

Zone 2

Zone 3

Zone 4

ACC-25/50ZS Modules

18 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010

Specifications Product Description

TB1 TB2

P1

SW1

BACK-UP ON

CKT TBL

AMP SUPV

J1

TB1 TB2

P1

SW1

BACK-UP ON

CKT TBL

AMP SUPV

J1

1 2 3 4 5 6 7 8

ON

S1

ON

S3

0

5

4

3

2

1

9

8

7

6

0

5

4

3

2

1

9

8

7

6

S2

TENS

ONES

AAM
1 & 2

AAM1

JP1

TB1

TB9

TB4

SW2

SW1

TB5

TB6

CLASS A

CLASS B

SW1

J1

TB1

TB2

TB3

FFT 1
FFT 2
FFT 3
FFT 4
FFT 5
FFT 6
FFT 7
FFT 8
FFT 9
FFT 10
FFT 11
FFT 12

FFT 13
FFT 14
FFT 15
FFT 16
FFT 17
FFT 18
FFT 19
FFT 20
FFT 21
FFT 22
FFT 23
FFT 24

SW1

TB1

TB2

TB3

J3J2J1

1 2 3 4 5 6

1 2 3 4 5 6

1 2

SW2

Figure 1.4 ACC-25/50ZST Main Board with ACC-FFT Module

AC25ZSTMNTa.wmf

Dark stripe on

ribbon cable must

be positioned to

left as shown!!

Remote

Microphone

Wiring

Power

Grnd

+ Audio

- Audio

Earth

Remote Page
Jack Keyswitch
used for All-Call

Phone Paging

(4.7K ELR

required after

last RPJ

Keyswitch or at

TB2 if

Keyswitch is

not used)

Class A Class B

Return Out

+ shld - + shld -

Audio Wiring to

Remote Page
Jack (4.7K ELR
required after last

RPJ for Class B

wiring only)

switch position

shown for

2-wire Class B

telephone

connection

2-wire
4-wire

(ribbon cable is required when
annunciating remote Fire Fighter
Telephone locations)

to P5

on

main

board

Panel FFT

Handset

Connector

(side view)

Fire Fighter

Telephone Module

REMOTE MIC INSTALLED

switch position shown

for remote

microphone installed

Zone Page Module

Ribbon
Cable from
J3 on back

of

to P4 on

back of

ACC-25/50ZST with ACC-FFT Module

1.2 Specifications

AC Power - TB3

ACC-25/50, ACC-25/50ZS, ACC-25/50ZST: 120 VAC, 60 Hz, 1.5 amp.
Wire size: minimum #14 AWGb with 600 V insulation.

AC Loss Relay - TB7

Operation: normally energized fail-safe relay transfers on AC power loss for independent monitor­ing by DACT. AC Loss Relay can be programmed to be the only indication of an AC loss condi­tion (see Table 2.3 on page 34).
AC Loss relay contact rating: 2.0 amps @ 30 VDC (resistive), 0.6 amps @ 30 VAC (resistive)

Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 19

Product Description Specifications

Battery (lead acid only) - P10

Maximum Charging Circuit: Normal Flat Charge - 27.6V @ 0.800 amp
Maximum Charger Capacity: 18 Amp Hour battery. (Audio Command Center Series cabinet holds
max. 18 Amp Hour Battery.

Command Input Circuits (alarm polarities shown)

• CMD1 - TB2 Terminals 3(+) & 4(-) are input terminals and Terminals 1(-) and 2(+) are output
terminals which provide feed through of the NAC circuits to NAC devices down stream

• CMD2 - TB5 Terminals 3(+) & 4(-) are input terminals and Terminals 1(-) and 2(+) are output
terminals which provide feed through of the NAC circuits to NAC devices down stream

• CMD3 - TB8 Terminals 1(+) & 2(-) are input terminals for contact closure only

• CMD4 - TB9 Terminals 1(+) & 2(-) are input terminals for contact closure only

• CMD5 - TB10 Terminals 1(+) & 2(-) are input terminals for contact closure only

Operation: CMD1 & CMD2 circuits are independently field programmable to activate amplifiers
on NAC polarity reversal or contact-closure. IMPORTANT! When CMD1 and CMD2 are config-

ured for reverse polarity, the NAC cannot

be Coded.

CMD3, CMD4 and CMD5 are fixed to activate on contact closure only. End-of-Line resistors must
be connected in all configurations.
Power-limited and supervised circuitry
Normal Operating Voltage Range: 10.5 VDC - 29 VDC; Maximum Voltage: 29 VDC
NAC Reverse Polarity Current (requires End-of-Line Resistor from NAC): 1.6 mA maximum.
Contact Closure Operation Current (requires 4.7K, ½ watt End-of-Line Resistor P/N 27072): 6.6
mA maximum
Maximum Wiring Impedance CMD1 - CMD5 (Contact Closure Operation): 200
Maximum Input Impedance:

• CMD1 & CMD2 (Reverse Polarity Operation): 20K

• CMD1 - CMD5 (Contact Closure Operation): 3.4K

Audio Amplifier Module

Standard ACC-AAM25 Amplifier plugs into P4 of main circuit board, optional ACC-AAM25
Amplifier plugs into P3 of main circuit board

Backup Audio - TB2 [In Terminals 1(+) & 2(-), Out Terminals 3(+) & 4(-)] on Amplifier Module

Operation: When TB2 is wired between the two amplifiers of a panel, the optional amplifier pro­vides backup to the standard amplifier. Switch S1 on the backup amplifier must be 'ON' and jump­ers placed from backup amplifier TB2 Terminal 3 to standard amplifier TB2 Terminal 1 and from
backup amplifier TB2 Terminal 4 to standard amplifier TB2 Terminal 2. Refer to Section “One
Speaker Circuit With Backup on ACC-25/50” on page 81, for additional information.

Speaker Circuit - TB1 Terminals 3(+) & 4(-) Style Y, 5(+) & 6(-) Style Z, 1 & 2 Shield (Standby
and Alarm Polarity Shown) on Amplifier Module

Power-limited circuitry
Operation: Circuit can be wired Style Y or Style Z
Normal Operating Voltage: 25 V
(70.7 V

@ 350 mA max. with maximum Load Impedance of 200operation possible by plug-

RMS

@ 1 amp max. and maximum Load Impedance of 25

RMS

ging optional FC-XRM70 conversion module into P1 of audio amplifier).
Circuit wiring is supervised during standby, alarm and when background music is playing
Output Power: 25 watts (20 watts when background music is employed);
Frequency Range: 800Hz - 2,800Hz
Maximum total capacitance for each speaker circuit: 250 µF.
End-of-Line Resistor required for Style Y circuit: 4.75 K, 1 watt (P/N: 75470)

20 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010

Specifications Product Description

ACC-ZSM Zone Splitter Module and ACC-ZPMK Zone Page Module (ACC-25/50ZS/T
Only)

Power-limited circuitry
Operation: Circuits on ACC-ZSM can be wired as eight Style Y or four Style Z
Normal Operating Voltage for Speaker Circuits: 25 V

@ 1 amp max. and maximum Load

RMS

Impedance of 25

(70.0 V

@ 350 mA max. with maximum Load Impedance of 200operation possible by

RMS

plugging optional FC-XRM70 conversion module into P1 of audio amplifier).

Speaker circuit wiring is supervised during standby and alarm. (Note that background music is not

permitted in Zone Splitter configuration since open-circuit fault detection is not possible)

Output Power: 25 watts total; Frequency Range: 800Hz - 2,800Hz
Maximum total capacitance for ACC-AAM25: 250 µF. (Note that the total

capacitance for the

ACC-ZSM speaker outputs must not exceed the maximum of 250 µF).

End-of-Line Resistor required for Style Y (Class B) speaker circuit: 4.75 K, 1 watt (P/N: 75470)
TB1 on ACC-ZPMK: ACS (EIA-485) electrically isolated link to FACP provides programmed
speaker control

ACC-FFT Fire Fighter Telephone Module (ACC-25/50ZST Only)

Power-limited circuitry

TB1 Remote Phone Circuit Operation: Circuit can be wired Style Y (Class B) or Style Z (Class A)

Wiring connects Remote Page Jacks (FPJ-F or RPJ-F) to control panel for phone communication
Normal Operating Voltage (V

): Standby = n/a, Active = 0.2 V

RMS

RMS

Normal Operating Voltage (VDC): Standby = 12 VDC, Active = 4 VDC to 0.9 VDC
Normal Operating Current (mA): Standby = 1.3 mA, Active = 5 mA
Circuit wiring is supervised.
Maximum wiring impedance = 54
End-of-Line Resistor required for Style Y circuit: 4.7K, ½ watt

TB2 Remote Page Jack Keyswitch Operation: Circuit wired Class B

Keyswitch enables All-Call Paging by FHS-F Remote Phone
Requires RPJ-F
Circuit wiring is supervised.
Maximum wiring impedance = 54
End-of-Line Resistor required: 4.7K, ½ watt

TB3 Remote Microphone Operation:

Provide connection for the optional FC-RM Remote Microphone Module which is used for remote
paging capabilities.

NOTE: For installations that require both the Fire Fighter Telephone and Remote Microphone,
the Remote Microphone Module wiring connections are made to the ACC-FFT Fire Fighter
Telephone Module.

Master CMD Out - TB6 Terminals 1(+), 2(+), 3(-) & 4(-) (active polarity shown)

Provides All-Call Paging trigger for Distributed Audio units (ACC-25/50 ONLY). Will drive MR­101C or MR-201C relays (manufactured by Air Products and Controls) to provide relay contacts.
Supervised and power-limited circuitry
Programmed Operation: Output reverses polarity on activation of All-Call switch, Remote Micro­phone or External Page Module input.
Normal Operating Voltage: 24 VDC regulated, filtered; Maximum Voltage: 25.4 VDC
Reverse Polarity Current: 125 mA maximum.
Standby Voltage: -5 VDC. Short Circuit Current: 0.5 mA. Maximum Load Resistance: 200 ohms.
Wiring connections to Master CMD Output Circuit:

Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 21

Product Description Specifications



End-of-Line Resistor required for Class B using Terminals 1(+) & 4(-): 4.7 K, ½ watt
(P/N: 27072)

 Class A (no End-of-Line Resistor) requires the wiring of Terminal 1(+) to 2(+) and Terminal

3(-) to 4(-)

Up to 25 Distributed Audio Panels may be connected to this output (ACC-25/50 Only)

Special Application Power (Aux. Power) - TB4 Terminals 1(+) & 2(-)

Up to 35 mA @ 24 VDC of special application power is available for powering addressable mod­ules and associated End-of-Line power supervision relays.

Power-limited circuitry. Refer to the Device Compatibility Document for a list of compatible
devices.

Form-C Trouble Relay - TB1

Normally energized fail-safe relay can be programmed to transfer its contacts on any panel trouble
condition or on any trouble condition except AC Loss (see Table 2.3 on page 34).

TB1 Form-C relay contact rating: 2.0 amps @ 30 VDC (resistive), 0.6 amps @ 30 VAC (resistive).

External Audio Input

• RCA Audio Jack Input (female connector)

nput Impedance: 30K maximum
Input Voltage: 700 mV

maximum

RMS

Input Current: 1 mA maximum @ 700 mV
Requires preamplifier output. Mates to an RCA phono 'plug' - 3mm diameter, 10mm
length, 9mm shell diameter.

• 3.5 mm PC Audio Jack Input (female connector)

Requires preamplifier output
Interfaces to personal computer line output

NOTE: Some laptop personal computers only provide an audio output for headphones. It may
be necessary to adjust the headphone output level for proper recording of voice messages.

FC-MIM Microphone Interface Module (Optional) - P5 Connector

Connector P5 provides a connection for:

• the optional FC-MIM Microphone Interface Module which is used to connect the FC-RM

Remote Microphone Module to provide remote microphone paging capabilities.

• the ACC-FFT Fire Fighter Telephone module which is used for emergency telephone appli-

cations.

NOTE: For systems that require both the Remote Microphone and Fire Fighter Telephone, the
ACC-FFT is connected to the P5 connector on the main circuit board and the Remote Microphone
connections are made on the ACC-FFT. The FC-MIM is incorporated into the ACC-FFT Fire
Fighter Telephone Module as part of the ACC-25/50ZST. A separate FC-MIM is therefore not
required for this system.

Microphone connector for Fire•Lite standard microphone P/N:45025 - P6 Connector

ACC-EPM External Page Module (Optional)

Audio Input Impedance: 600 maximum
Audio Input Voltage: 700 mV

maximum

RMS

Audio Input Current: 1 mA maximum @ 700 mV
Contact Closure Operation Current: 2.3 mA maximum
External paging equipment is electrically isolated from ACC-25/50, ACC-25/50ZS and ACC­25/50ZST

22 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010

Controls and Indicators Product Description

Figure 1.5 Controls and Indicators

Single Zone Operation

acc25kyblnk.wmf

ALL-CALL

AUDIO ON/OFF

MESSAGE 1

MESSAGE 2

MESSAGE 3

MESSAGE 4

MESSAGE 5

POWER ON

SYSTEM

TROUBLE

MESSAGE
TROUBLE

GENERATOR

TONE

GENERATOR

TROUBLE

RECORD

PLAYBACK

TROUBLE

SILENCE

MICROPHONE

TROUBLE

Figure 1.6 Controls and Indicators

Dual Zone Operation

acc25kyblnk.wmf

ZONE 1

ZONE 2

MESSAGE 1

POWER ON

SYSTEM

TROUBLE

MESSAGE
TROUBLE

GENERATOR

TONE

GENERATOR

TROUBLE

RECORD

PLAYBACK

TROUBLE

SILENCE

MICROPHONE

TROUBLE

1.3 Controls and Indicators

1.3.1 Single Zone Operation (ACC-25/50, ACC-25/50ZS, ACC­25/50ZST)

Figure 1.5 depicts Single Zone operation with the
maximum capacity of five messages. Single Zone
may be configured for two to five message control
(refer to Section 2, ”Field Programming” on page 32).

• ALL-CALL:

 used to select All Call function when ACC-

25/50 Series is programmed for Single Zone
operation. Selecting this button also activates
the Master Command Bus, which is used to
trigger Distributed Audio Panels. Single Zone

operation directs the same message to both
amplifier circuits (S3 DIP switches 1, 2 and 3
set to one of the valid options other than all
OFF)

• AUDIO ON/OFF:

 used to indicate that speaker circuits are activated when ACC-25/50 Series is programmed

for Single Zone operation (S3 DIP switches 1, 2 and 3 set to one of the valid options other
than all OFF). Push-button switch can be used to deactivate the audio amplifiers that were

activated by the FACP

• MESSAGE 1 - used to manually transmit Message 1 over speaker circuit

• MESSAGE 2 - used to manually transmit Message 2 over speaker circuit

• MESSAGE 3 - used to manually transmit Message 3 over speaker circuit

• MESSAGE 4 - used to manually transmit Message 4 over speaker circuit

• MESSAGE 5 - used to manually transmit Message 5 over speaker circuit

1.3.2 Dual Zone Operation (ACC-25/50 Only)

Figure 1.6 depicts Dual Zone operation which sup­ports the generation of one message only (refer to Sec­tion 2, ”Field Programming” on page 32).

• ZONE 1:

• ZONE 2:

Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 23

 used to select Zone 1 when ACC-25/50 is

programmed for Dual Zone operation. Dual
Zone operation directs a single message to
either or both amplifier circuits (S3 DIP
switches 1, 2 and 3 set to OFF).

 used to select Zone 2 when ACC-25/50 is

programmed for Dual Zone operation (S3 DIP
switches 1, 2 and 3 set to OFF)

Product Description Controls and Indicators

FACP

ACC

Zone 1
Zone 2
Zone 3
Zone 4
Zone 5
Zone 6

Zone 7
Zone 8

Zone 24

Zone 9
Zone 10
Zone 11
Zone 12

Zone 13
Zone 14
Zone 15
Zone 16
Zone 17
Zone 18
Zone 19
Zone 20
Zone 21
Zone 22
Zone 23

1.3.3 RECORD/PLAYBACK

 for recording messages when Record/Bypass switch is in the up Record position (refer to

Section “S2 - Record Bypass Switch on ACC-25/50 Series Motherboard (ACC-MCB)” on
page 38, Section 2.1, ”S1 DIP Switch Settings on ACC-25/50 Series Motherboard (ACC­MCB)” on page 36 and Section 2.2, ”S5 DIP Switch Settings on ACC-25/50 Series
Motherboard (ACC-MCB)” on page 37 for additional information on recording messages.)

 for reviewing recorded message when Record Bypass Switch is in the down Bypass position

(requires optional FC-LPS module).

1.3.4 TROUBLE SILENCE

 momentary depression silences the local piezo when system is in trouble condition.

1.3.5 LEDs (visible with panel door closed):

• Power ON (green)

• System Trouble (yellow)

• Message Generator Trouble (yellow)

• Tone Generator Trouble (yellow)

• Microphone Trouble (yellow)

• Record/Playback (green)

•Dual Zone

 Zone 1 (green = active, yellow = manual deactivation)

 Zone 2 (green = active, yellow = manual deactivation)

• Message 1 (green = activation)

• Message 2 (green = activation)

• Message 3 (green = activation)

• Message 4 (green = activation)

• Message 5 (green = activation)

• Single Zone

 All Call (green = active)

 Audio On/Off (green = active, yellow = manual deactivation)

1.3.6 ACC-ZPMK Zone Page Module (ACC-25/50ZS and ACC­25/50ZST Panels only)

Push button Switches

24 tactile push-button switches used to manually activate the corre­sponding speaker zone. If speaker zone has been activated by the
FACP programming, pressing the switch will deactivate the speaker
zone and illuminate the corresponding yellow zone LED and the Sys­tem Trouble LED.

LEDs

• FACP Communication (green = active, extinguished = no

24 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010

communication)

The (top left LED) communication should only be active if the
ACC-25/50ZS/T is connected to an FACP and communication
via the ACS link is established.

Controls and Indicators Product Description

FFT 1
FFT 2
FFT 3
FFT 4
FFT 5
FFT 6
FFT 7
FFT 8
FFT 9

FFT 10

FFT 11

FFT 12

FFT 13

FFT 14

FFT 15

FFT 16

FFT 17

FFT 18

FFT 19

FFT 20

FFT 21

FFT 22

FFT 23

FFT 24

• ACC Communication (green = active, extinguished = no communication)

This (top right LED) indicates communication between the ACC-ZPMK and the ACC­25/50ZS/T main circuit board via the connecting ribbon cable.

• Speaker Circuit Zones 1 through 24 (green = active, yellow = trouble/disabled

Only the LEDs for Zones 1 through 8 will be functional if the ACC-ZSM is configured for Style
Y (Class B) operation or only the LEDs for Zones 1 through 4 will be functional if the ACC­ZSM is configured for Style Z (Class A) and no ACC-25/25DAZS Distributed Audio panels are
connected.

1.3.7 ACC-FFT Fire Fighter Telephone Module (ACC-25/50ZST only)

Pushbutton Switches

• Answer Call - tactile pushbutton switch used to connect or
disconnect Remote Telephone FHS-F plugged into the FPJ-F or
RPJ-F from the ACC-FFT.

LEDs

• Power (green) - indicates that power is applied to the ACC-FFT
Fire Fighter Telephone module

• Answer Call (green LED) - flashes to indicate that a remote
phone (FHS-F) has been plugged into the FPJ-F or RPJ-F on the
telephone circuit. LED turns on steady when Answer/Call
pushbutton is pressed to answer the remote phone call

• Remote Handset Page (green LED) - turns on steady to indicate
that a remote phone (FHS-F) has been connected to the telephone circuit and the Remote Page
Jack Keyswitch on the RPJ-F has been activated for remote paging

• Remote Microphone Page (green LED) -turns on steady to indicate active paging from Remote
Microphone

• Remote Handset Trouble (yellow LED) - turns on steady to indicate that a fault exists on the
telephone circuit connected to TB1 of the ACC-FFT

• Local Handset Trouble (yellow LED) - turns on steady to indicate that the local handset has a
connection fault

• Remote Key Trouble (yellow LED) - turns on steady to indicate a remote keyswitch wiring
fault (TB2)

• Remote Microphone Trouble (yellow LED) - turns on steady to indicate a fault on the Remote
Microphone wiring or electronics (TB3)

• FFT 1 through FFT 24 (green LEDs) - LED for each of 24 possible remote phone circuits will
turn on if an addressable monitor module has been connected and programmed for activation
when a remote phone (FHS-F) is plugged into the corresponding Remote Page Jack (FPJ-F or
RPJ-F)

1.3.8 ACC-EPM External Page Module

• Page Active (green=active)

1.3.9 Other System LEDs (located on main circuit board and modules)

• AC Power (green) - main circuit board

• Battery Trouble (yellow) - main circuit board

• Charger Trouble (yellow) - main circuit board

• Ground Fault (yellow) - main circuit board

• Circuit Trouble (yellow) - Amplifier module

Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 25

Product Description Circuits

• Amplifier Supervision (green) - Amplifier module

1.4 Circuits

Input Circuits - CMD1, CMD2, CMD3, CMD4 & CMD5

• Input circuits CMD1 and CMD2 are independently field programmable to accept Notification
Appliance Circuits or normally open contacts. (IMPORTANT! When CMD1 and CMD2 are

configured for reverse polarity, the NAC cannot

feed-through of the NACs, allowing placement of the ACC-25/50 Series anywhere along a
Notification Appliance Circuit. A trouble on the ACC-25/50 Series will cause relay contacts at
the out terminals of CMD1 to open, causing an NAC circuit trouble at the FACP.

NOTE: The ACC-25/50 Series will not open the out terminals while in alarm or during AC loss if
the Trouble Relay is programmed not to transfer on AC Loss conditions (refer to Switch 8 in Table

2.3 on page 34). Monitoring ACC-25/50 Series troubles while in alarm requires use of

independent trouble relay at TB1.

• Programming CMD1 and/or CMD2 for activation on contact closure will allow activation of
the amplifiers on a normally open contact transfer to the closed condition. Contact wiring is
supervised for open conditions. A short will cause amplifier activation (contact closure).

• Input circuits CMD3, CMD4 and CMD5 will only activate on contact closure which will allow
activation of the amplifiers on a normally open contact transfer to the closed condition.
Contact wiring is supervised for open conditions.

Audio Input Jacks

• RCA Jack provides convenient connection to an audio source such as a tape player for
recording a new digital message. It may also be used for background music if approved by
local AHJ. Background music is prohibited during AC loss conditions to preserve battery
power.

• PC Jack provides convenient connection to an audio source such as a personal computer for
recording a new digital message. The jack allows vertical plug-in of a standard mini-jack
cable. It may also be used for background music if approved by local AHJ. Background music
is prohibited during AC loss conditions to preserve battery power.

Output Circuits

• Specific Application Power Output, 35 mA @ 24 VDC.

• Main circuit provides a 24 Volt Battery Charger (up to 18 AH batteries) @ 800 mA maximum.

Master Command Output Bus

• Normal Operating Voltage: 24 VDC regulated, filtered. Reverse Polarity Current 120 mA
maximum

• Output reverses polarity on activation

• All-Call Paging control bus for the Audio Command Center Distributed Audio panel (ACC­25/50DA) or other Fire•Lite UL-listed audio products

Notification Appliance Circuit

• One NAC Speaker Circuit Style Y or Style Z with each ACC-AAM25 amplifier module.

• Four NAC Speaker Circuits Style Z or eight Style Y with ACC-ZSM (ACC-25/50ZS/T only)

Relays

• One Form-C Trouble Relay. Contacts are rated 2.0 amps @ 30 VDC (resistive) and 0.6 amps
@ 30 VAC (resistive)

be Coded). Terminals are provided to allow

26 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010

Components Product Description

Figure 1.7 Main Circuit Board

Audio Amplifier

AC25MAST2.wmf

• One Form-C AC Loss Relay. Contacts are rated 2.0 amps @ 30 VDC (resistive) and 0.6 amps
30 VAC (resistive).

NOTE: The Trouble Relay can be programmed to transfer on any trouble condition including AC
Loss or on any trouble condition except AC Loss (see Switch 8 in Table 2.3 on page 34).

FC-MIM Microphone Interface Module or ACC-FFT Fire Fighter Telephone Module

• Connector P5 provides a connection for the optional FC-MIM Microphone Interface Module
which is used to connect the FC-RM Remote Microphone to provide remote microphone
paging capabilities for the ACC-25/50 and ACC-25/50ZS (refer to Remote Microphone
Installation document #51247).

• Connector P5 provides a cable connection to the optional ACC-FFT Fire Fighter Telephone
Module connector J2 for the ACC-25/50ZST Zone System with Telephone. The FC-MIM
module function is incorporated into the ACC-FFT module eliminating the need for the FC­MIM (refer to Section “ACC-FFT Fire Fighter Telephone Module (ACC-25/50ZST Only)” on
page 55.

ACC-EPM External Page Module

• Connector P13 provides a connection for the optional ACC-EPM External Page Module which
is used to connect external non-emergency page equipment. The electrically isolated signal
from the external equipment is not supervised by the ACC-25/50 Series panels. Alarm
condition and paging from the ACC-25/50 Series panels have priority and will override all
external page functions. To preserve battery power, non-emergency paging is prohibited
during AC loss conditions.

ACC-ZPMK Zone Page Module (ACC-25/50ZS & ACC-25/50ZST only)

• Connector P11 provides a connection for the ACC-ZPMK Zone Page Module which is used to
annunciate and control the selection of speaker circuits. Refer to Section “ACC-ZPMK Zone
Page Module - ACS Link (ACC-25/50ZS & ACC-25/50ZST)” on page 52.

Local Speaker

• Connector P2 provides a connection for an optional, removable local speaker P/N: FC-LPS, to
be used for reviewing the digital message without broadcasting over the system speakers.
Figure 3.19, “Installation of Speaker Module” on page 60. This option module must be
installed to take advantage of the Playback feature. Note that The FC-LPS must be removed
after use.

1.5 Components

Main Circuit Board

The ACC-25/50 Series main cir­cuit board contains the system's
CPU, tone generators, special
application auxiliary 35 mA
power output, DIP switches for
field programmable features, digi­tal message recorder/generator,
integral microphone input and pre­amplifier, other primary compo­nents and wiring interface
components. One amplifier mod­ule is supplied mounted to the
main circuit board. The ACC­25/50ZS and ACC-25/50ZST also include one ACC-ZPMK Zone Page Module and one AC-ZSM
Zone Splitter Module (refer to Figure 1.3 on page 18). The ACC-25/50ZST also includes one

Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 27

Product Description Components

Figure 1.8 Cabinets

ACC-2550.wmf

ACC-25/50

ACC-25/50ZS

ACC-2550ZS.wmf

ACC-

ACC-25/50ZST

ACC-2550ZST.wmf

ACC-FFT Fire Fighter Telephone Module (refer to Figure 1.4 on page 19). Optional modules can
be plugged in and mounted to the main circuit board. The main circuit board is delivered pre­mounted in the cabinet.

Audio Amplifier Module [ACC-AAM25]

A single Audio Amplifier Module is installed in the ACC-25/50 Series. The amplifier provides 25
watts of power at 25 V

70.7 V

. One fully supervised and power-limited speaker circuit is provided on the amplifier

RMS

. An optional module, P/N: FC-XRM70, converts the 25 V

RMS

output to

RMS

module. The circuit can be wired for Style Y (Class B) or Style Z (Class A) operation.

LEDs are provided to indicate Amplifier Supervision (green indicates amplifier is functional) and
Circuit Trouble (yellow indicates field wiring fault or amplifier fault). The LEDs are only visible
with the panel door open.

Cabinet

The cabinet is red with an attractive navy blue front overlay. A clear window allows viewing of
status LEDs and location of microphone. The backbox measures 26.0" x 15.5" x 4.75" and pro­vides space for two batteries (up to 18 Amp Hours). The ACC-25/50ZS and ACC-25/50ZST cabi­nets provide a clear window to view the ACC-ZPMK module which is mounted in the center left
portion of the cabinet and the ACC-FFT module which is mounted in the center right portion of the
cabinet.

Batteries

The cabinet provides space for 18 Amp Hour batteries (charged by integral Power Supply/Battery
Charger module).

28 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010

Optional Modules Product Description

Figure 1.9 Dress Panel

ACC-25ZSDP.wmf

Dress Panel

The Dress Panel is supplied standard with the system. It mounts to the cabinet with two supplied
screws. The Dress Panel protects the user from high voltages and circuit boards from accidental
damage. All system LEDs are visible with the Dress Panel installed.

Trim Ring

An optional ACC-TR trim ring is available for semi-flush mounting of the audio panel.

1.6 Optional Modules

ACC-AAM25 Audio Amplifier Module

An optional second identical audio amplifier can be plugged into connector P3 located in the lower
center of the main circuit board in the ACC-25/50 Series. This amplifier also provides 25 watts of
power at 25 V
watt speaker circuits) or it can be used as a backup amplifier. An option module can also be used to
convert the 25 V

NOTE: For ease of access, all wiring should be connected to the terminals on the main circuit
board terminal blocks TB5, TB6, TB9 and TB10 prior to installing the secondary Audio Amplifier
Module.

FC-XRM70 Transformer Module 70.7 V

This optional module plugs into connector P1 of the Audio Amplifier Module and provides conver­sion from 25 V

FC-LPS Local Playback Speaker

This optional speaker module plugs into connector P2 located in the lower right section of the
ACC-25/50 Series main circuit board. This unit allows reviewing of the digital messages locally
without broadcasting over the system speakers. The optional module must be installed in order to
take advantage of the Playback feature. It may be temporarily used to test recorded messages. A
mounting kit is included for this purpose. The FC-LPS cannot be permanently mounted in the
enclosure and must be removed after use.

and can therefore be used to expand system power to 50 watts (providing dual 25

RMS

output to 70.7 V

RMS

to 70.7 V

RMS

RMS.

RMS

at full rated 25 watts output power.

RMS

FC-RM Remote Microphone

The optional microphone module FC-RM, provides general paging capabilities through the remote
microphone for an audio system. Announcements can be broadcast over the speaker circuits by
depressing the Remote Microphone keyswitch. The FC-MIM Microphone Interface Module must
be installed in the ACC-25/50 or ACC-25/50ZS audio panel for connection to the FC-RM (refer to
the FC-RM Product Installation Document #51247 for installation information).

Audio Command Center Series Manual — P/N 51889:E1 6/8/2010 29

Product Description Getting Started

An ACC-25/50ZST does not require an FC-MIM since the function of this module is incorporated
in the ACC-FFT Fire Fighter Telephone module which is included with the ACC-25/50ZST. The
Remote Microphone Module is connected directly to the ACC-FFT Fire Fighter Telephone module
(refer to Section “ACC-FFT Fire Fighter Telephone Module (ACC-25/50ZST Only)” on page 55.

NOTE: Paging operations initiated from within the ACC-25/50 Series main panel will override the
remote microphone.

ACC-EPM External Page Module

This optional module provides an interface to external non-emergency paging equipment. When
activated, a contact closure will switch the external paging equipment into the ACC-25/50 Series
speaker circuits if the circuits have not been activated by the ACC-25/50 Series panels for emer­gency use. Any emergency/fire activation or local paging will override the ACC-EPM input. Pag­ing from non-emergency equipment is prohibited during AC loss condition to preserve battery
power.

1.7 Getting Started

This section describes the basic guidelines for setting up the various ACC-25/50 Series systems,
assuming that the speaker and FACP cabling has been installed.

1.7.1 ACC-25/50, Requiring up to 50 Watts of Audio Power

• Install backboxes and circuit boards as described in Section 3, ”Installation” on page 42.

• Configure the ACC-25/50 for Single Zone operation, if individual speaker circuit control is not
required, by setting DIP switch S3 switches 1, 2 and 3 on the ACC-MCB mother board. The
factory default setting is Dual Zone output control. Refer to Section 2, ”Field Programming”
on page 32.

• Record any new voice messages as described in Section 4, ”Operating Instructions” on page

63.

1.7.2 ACC-25/50 With ACC-25/50DA(s), Requiring Greater Than 50 Watts of Audio Power

• Connect the Audio Riser and Master Command Bus (for All-Call) cabling between the ACC­25/50 and ACC-25/50DA panels. Refer to Section 5, ”Application Examples” on page 80.

• Install backboxes and circuit boards as described in Section 3, ”Installation” on page 42.

• Configure the ACC-25/50 for Single Zone operation using DIP switch S3 switches 1, 2 and 3
on the ACC-MCB motherboard. Refer to Section 2, ”Field Programming” on page 32. The
ACC-25/50DA DIP switches can be left at the default settings.

• Record any new voice messages as described in Section 4, ”Operating Instructions” on page

63.

1.7.3 ACC-25/50ZS & ACC-25/50ZST, Requiring up to 50 Watts of Audio Power

• Install backboxes and circuit boards as described in Section 3, ”Installation” on page 42.

• Configure the ACC-25/50ZS/T for Single Zone operation using DIP switch S3 switches 1, 2
and 3 on the ACC-MCB motherboard. Refer to Section 2, ”Field Programming” on page 32.

• Configure the ACC-ZPM Zone Page Module DIP switch S1 switches 1, 2 and 3 for operation
with the FACP. Refer to Section 2, ”Field Programming” on page 32 and Section 5,
”Application Examples” on page 80.

30 Audio Command Center Series Manual — P/N 51889:E1 6/8/2010