General Manual - Ampac - World Leader of Innovative …ampac.net/uploaded/Manuals/MAN1549-2_125_to_500W… · · 2015-10-18Open and short circuit speaker line monitoring and protection

125/250/500 WATT

Occupant Warning & System

Installation, Commissioning & Operation

MAN1549-2

125/250/500Watt Occupant Warning System

TABLE OF CONTENTS Page No.

1 About This Manual ............................................................................................................... 1

1.1 Introduction ................................................................................................................ 1

1.2 Symbols ..................................................................................................................... 1

2 Evacuation Control............................................................................................................... 2

2.1 EV20 Audio Line Driver .............................................................................................. 2

2.2 Features ..................................................................................................................... 2

2.3 Operation ................................................................................................................... 3

2.4 Options ...................................................................................................................... 3

2.4.1 Public Address ............................................................................................... 3

2.4.2 Verbal Message ............................................................................................. 4

3 Control & Indicator Card ...................................................................................................... 5

3.1.1 Controls ......................................................................................................... 5

3.1.2 Indicators ....................................................................................................... 5

4 125/250/500Watt Amplifier.................................................................................................... 7

4.1 Features ..................................................................................................................... 7

4.2 Audio Connections ..................................................................................................... 8

4.3 Speaker Connections ................................................................................................. 8

4.4 Power Supply ............................................................................................................. 8

4.5 Battery Charging Function .......................................................................................... 8

4.6 Operation ................................................................................................................... 8

4.7 Trouble Shooting ........................................................................................................ 9

5 Line Montoring Unit ............................................................................................................ 10

5.1 Features: .................................................................................................................. 10

5.2 Connection ............................................................................................................... 10

5.3 Speaker Connection ................................................................................................. 11

6 Typical Application............................................................................................................. 13

7 Specifications 20W amplifier ............................................................................................. 14

8 Specifications 250W amplifier ........................................................................................... 15

Page 1

OCCUPANT WARNNG SYSTEM INSTALLATION, COMMISSIONING & OPERATION

1 About This Manual

1.1 Introduction

This manual uses the 250Watt amplifier configuration to out line AMPAC’s high powered, stand alone Occupant Warning System.

1.2 Symbols

Note: Configuration considerations

Observe antistatic precautions

Page 2


2 Evacuation Control

The EV20 is a compact single zone occupant warning module that produces

Alert and Evacuation signals

An output that will drive up to 20-watts of speaker load

Is supplied with a switch control card; and

Can be installed into most fire alarm control panels or used as a stand-alone unit in its own enclosure

Driver Stage 20Watt Amplifier Stage

Figure 1: Complete EV20

2.1 EV20 Audio Line Driver

The EV20 is also supplied in a modified form for use as an audio line driver for larger amplification systems. Supplied in this form the 20watt amplification stage is not populated on the PCB.

2.2 Features

Open and short circuit speaker line monitoring and protection

Fault indication

Adjustable ALERT and EVAC level control

FACP input

“Alert” / “Evacuation” changeover time out – 0, 30, 60, 120, 180, 240 or 300 seconds

2.5mm terminals for field wiring

P. A. microphone input (optional)

Verbal messaging (optional)

Page 3


2.3 Operation

If an FACP input is received when the rotary switch is in the AUTO position the EV20 will begin to output the Evacuation signal as the factory default setting of the Alert “time out” period is 0. If the alert signal is required the “time out” duration of the “time out” is determined by the setting of the 4 way DIL switch SW1.

The set duration is termed the changeover timeout and ranges from 0 seconds to a maximum of 300 seconds. If the time out is set to 0 sec then the alert tone is bypassed and the evacuation signal commences immediately. The operator can manually stop the signal sequence by turning the rotary switch to the ISOLATE position.

ON

EXAMPLE OFSETTING - 30SECS

0 ( EVAC ONLY - FACTORY SETTING )

30

60

120

180

240

300

ALERT ONLY NO CHANGE OVER

1 2 3 4

SW 1 2 3

SW1 TIMEOUT TABLE

4

SECONDS

MUST ALWAYSBE SET TO OFF

Figure 2: Time Out Setting

Note: SW1/4 MUST ALWAYS be set to “OFF’

2.4 Options

2.4.1 Public Address

An optional microphone and pre-amplifier (Product code 222-0007) is used to provide the public address capabilities.

Figure 3: Microphone Pre-Amplifier

Page 4


2.4.2 Verbal Message

The optional verbal message board (Product code 222-0026) is mounted on standoffs to the main board. Audio and control interconnection to the main board is by way of a 5 way IDC cable.

Message

“Emergency Evacuate Now”

Figure 4: Verbal Message Board

0 1 2 3 4Time in seconds

OFF

500Hz

1200Hz

0.5

sec

0.5

sec

"EMERGENCYEVACUATE NOW"

1.5

secs

0.5

sec

0.5

sec

0.5

sec

0.5

sec

Figure 5: Evacuate Signal Timing

Page 5


3 Control & Indicator Card

Figure 6: Front Control Card

3.1.1 Controls

When the control switch is in;

AUTOMATIC - occupant warning signals, and if applicable the verbal message, is outputted to the amplifier system in use when it receives a “warning system” signal from the FACP.

ISOLATE – the occupant warning system is isolated from the FACP “warning system” signal and even if the signal is present there will be no output.

PUBLIC ADDRESS – the occupant warning system can be used locally as an optional PA system. The “press to talk” switch is mounted into the side of the microphone.

MANUAL EVACUATION – the occupant warning signal/s will be transmitted over the system.

3.1.2 Indicators

- In the event of an open or short circuit speaker line the LINE FAULT indicator (yellow) will be illuminated

- The LED will be illuminated (yellow) when the occupant warning system is isolated

Page 6


2 CORE AUDIO TERMINATED ONE ENDWITH 3 WAY PANDUIT CONNECTOR

+27V

SHEILD

2 CORE AUDIO FITTED WITH 3 WAY PANDUIT CONNECTORS

RED

BLACK

GREY

WHITE

AP

I-7

18

CN

1C

N2

CN

3RL1

8

9CA

1011

12

1

2

3

4 56

7B

SW1

0V

Pin

1

+27V

Pin

2

Sh

ield

P

in 3

Sig

nal P

in 1

Shield

Signal(Red)

VERBAL MESSAGEBOARD PLACEMENT

F1 1A GN

D

OU

T

IN

AUDIO

TO VERBALMESSAGEBOARD

FAULT

+ I

N -

CO

ME

VD

C-

DC

+

341

2

AM

PA

C

TIM

ER

BR

D4

2E

TG

-01

O/P

TO

NE

VO

ICE

CN2

CN1

CN3RV1 RV2

SW

1

C1

4

TB1

TX

1

5 WAYPANDUITEVAC/ALERT CONTROL

PUBLIC ADDRESSPRE-AMP

NOTE: IF THE P.A. OPTION IS NOT FITTED. FIT LINK ACROSSCN3 PINS 1(IN) AND PIN 2(OUT)

SYSTEM POWER

WARNING SYSTEM

-0V

FireFinder (* 302-673)

ZoneSense Plus

TB5/1 TB5/2

+ -WARN SYS

PANEL TERMINAL No

FireFinder (* 302-673)

ZoneSense Plus

TB2/1 TB2/2

CN10/1 CN10/2

PANEL TERMINAL No

47K

+-

PANEL CONNECTIONS

5 WAY CABLEMESSAGE CONTROL

FRONT PANEL

CN2

D090 PHILIPS

ON

1

2

3

4

TX1

TX2

RV1

LE

D1

O/P

O/P

AP

I-4

75

/2

O/P

O/P

TB1

CN1CN3

ET

H

MIC I/PShield

- + + -

IF THE OPTION IS USED THE BOARDIS MOUNTED ON STANDOFFSONTO THE MAIN BOARD IN THEPOSITION INDICATED ABOVE

FRONT PANEL PCB

Sig

nal P

in 2

TONEVOLUME

NOTE: "WARNING SYSTEM" IS AMONITORED FACP O/P.THE EOL IS ONBOARD THE EV20AND IS EFFECTIVELY MADE TO BEO/C (AT TB1) DURING AN EV120FAULT CONDITION.THIS PRODUCES THE FAULTINDICATION AT THE FACP

THE ALERT & EVAC OUTPUTLEVELS ARE SET BY ADJUSTINGRV1 & RV2 RESPECTIVELYFOR 100VAC.* 302-673 - BRIGADE PSU MONITOR BRD

VOICEVOLUME

ISOLATE

LINE FAULT

CN2

CTRL

1

1

1

OCCUPANT WARNING SYSTEM

AUTOMATIC

PUBLIC ADDRESS

MANUAL EVACUATION

LINE FAULT

ISOLATED

TO

EV

AC

DIS

AB

LE

EN

AB

LE

RE

CO

RD

ING

RE

CO

RD

AU

DIO

IN

AM

PA

C

12

/01

/11

BR

D42V

OM

2-

U3

U2

U4

U1 R15

R1

4

R13

R12

R11

R1

0

R9

R8

R7

R6R

5

R4

R3

R2

R1

CN

2

C1

0

C9

C8

C7

C6

C5

C4

C3

C2

C1

C11

C1

2

C1

3

C1

4

C1

5C16

C1

7

CN3

CN

4

R1

6

R17R

18

SW

1

CN

1

R1

9

Figure 7: Typical Wiring Diagram of an EV20 Single Zone OWS complete with P.A and Verbal Message Brd Fitted

Page 7


4 125/250/500Watt Amplifier

Note: For the purposes of this manual the 250W amplifier is highlighted in this explanation. Both

models have the same specifications and wiring configurations except for power output.

Figure 8: RedBack Phase 4 Amplifier Front

The output power stage is thermally monitored enabling automatic operation of a long life computer style cooling fan to "off", "low" or "high" air flow through a specially designed tunnel Heatsink. In quiescent or ordinary cycle paging mode the fan is inoperative.

Over temperature sensing is employed to shut down the amplifier in extreme over heat conditions, e.g. extreme over load and /or over drive misuse. Re–start is automatic once normal temperatures are attained.

The output voltage is limited to 110V maximum RMS voltage irrespective of load impedance to prevent damage to speaker load. Standard 100V line PA amplifiers can deliver up to 180 volts or more under conditions of high drive and very light loading. This output over voltage can quickly destroy any loudspeakers connected. In the event of an overload, the output current is limited by the internal circuitry, thus reducing the output voltage at the speaker terminals. The front panel ‘Overload’ LED flashes, indicating a fault with the speaker circuit.

240VAC

4-16Ohm

70V 100VVolume

Line In

Line Out

D CFuse

+-

Input24VDC

ChargingTerminals

+-

Figure 9: RedBack Phase 4 Amplifier Rear

4.1 Features

Multi-stage thermally cued fan cooling

LED bar graph VU meter

Input signal presence indicator

Output peak limited

2U 19" rack mount

pin XLR input, 3 pin XLR loop out

Level control rear mounted

100V, 70V and 4 - 16Ω outputs

Thermal and overload protection

240V AC, or 24V DC operation

300mA 24V battery trickle charge

Australian made

Page 8


4.2 Audio Connections

The audio Line Input is via the 3 pin XLR socket on the rear panel. This is a 320mV line level balanced signal. Pin out is printed on the rear of the amplifier.

A balanced, Line Out XLR plug is also available for passing the audio signal on to more amplifiers.

4.3 Speaker Connections

Speakers with a total impedance of 4 to 16 ohms, or speakers fitted with a line transformer may be connected.

Always ensure that the total load of the fitted speakers does not exceed the rated output of the amplifier otherwise damage may result.

Always be especially careful to avoid any short circuits and connections to the wrong terminals.

4.4 Power Supply

Ensure power is switched off at the front panel of the amplifier. Connect either mains power to the IEC socket with the supplied lead, or 24V DC to the terminal connections. As high currents may be drawn (possibly 18 amps) when operating from a 24V DC power supply, confirm the capacity of the DC power supply used.

4.5 Battery Charging Function

To operate the battery charging function a link must be made between the two terminals on the back of the unit (marked as “Charging resistor”). This activates the charging circuit and provides a nominal 24VDC 300mA trickle charge to the battery connected when 240V mains is present. When the mains fails, the amplifier is seamlessly powered from the battery.

4.6 Operation

Confirm all connections are correct. Turn volume on the rear panel of amplifier down. Switch on the power at the front panel. Slowly increase the volume on the amplifier to a suitable audio level.

The Overtemp LED on the front panel indicates the amplifier has shutdown due to excessive heat build-up and/or excessive load on the speaker outputs. The Overload LED indicates excessive load is connected to the amplifier.

The Peak LED indicates when the peak limiting is in operation and the Signal LED is provided to indicate when an input signal is present.

Adequate ventilation is required for the amplifier to work within its rated limit. Ensure the vents and fans are free of obstructions at all times. For the 250W model we recommend that a 1U Vented panel be placed between amplifiers to aid air flow.

Page 9


4.7 Trouble Shooting

If the REBACK Phase 4 amplifier fails to deliver the rated performance, check the following:

No Power, No Lights

Make sure amplifier power switch is on. Make sure mains power switch is on at the wall. Check the mains and DC fuse. Replace with only the correct type and rating.

Distorted Output

Check that the speaker type is correct for the output that you are using (i.e. 4-16Ω, 70V or 100V line). Check for any short circuits on the speaker line. Check speaker line impedance. Note: you must use an impedance meter to measure this. See table below for load details.

100V Line Legend

Load Reading

0.5W 20kΩ

0.66W 15kΩ

1W 10kΩ

1.25W 8kΩ

2W 5kΩ

2.5W 4kΩ

5W 2kΩ

7.5W 1.3kΩ

10W 1kΩ

15W 666Ω

20W 500Ω

30W 333Ω

40W 250Ω

60W 166Ω

100W 100Ω

125W 80Ω

250W 40Ω

500W 20Ω

Very Low Output Volume

Make sure that the input is the correct level (check for shorted connectors). Check for any short circuits on the speaker line.

Continually Blows Fuses

Make sure that the speaker line is not shorted. Check speaker types, ratings and if on correct output.

Amplifier Keeps on Cutting In & Out

Make sure that there is adequate ventilation around the amplifier. Check the vent slots on the front are not covered or blocked and the fan on the rear is functioning correctly. Check also speaker types, ratings and for any short circuits on the speaker line.

Page 10


5 Line Montoring Unit

This module has been designed to monitor the integrity of 100V Line speaker circuits. It is connected between the amplifier output and the speaker circuit. The module will detect one of three speaker line conditions. (Normal, Short Circuit or Open Circuit). LED indication is provided for each condition. A switched output is provided for each of the fault conditions. These may be used for sounding an alarm or muting the input of the amplifier to prevent excessive current draw in the event of a short circuit. Several modules may be connected to one amplifier for multi-zone installations. To function correctly, the speaker circuit must be wired on a loop-in, loop-out basis with a 100K Ohm end-of-line resistor fitted across the speaker line at the last transformer.

Note: All speakers must be fitted with a 22µF Bi-Polar capacitor fitted on the input of the

transformer.

5.1 Features:

LED Status Indicators

Two switched outputs Operates from a wide supply voltage (15-35 volts DC)

Screw Terminals for all connections

Compact design

Includes Spike protection

No setup or calibration required

Figure 10: Line Monitor Card

5.2 Connection

Mount the module within the amplifier or an appropriate enclosure.

Connect a nominal 24V DC supply (15 - 35V DC) positive pin 1, negative pin 2. The output of the amplifier is connected to the “IN” terminals pins 3 + 4. The speaker line is connected to pins 5 + 6. Pins 7, 8 and 9 are used for monitoring an alarm condition.

PIN 7. Switched negative out in OPEN CIRCUIT condition

PIN 8. Positive 12V

PIN 9.Switched negative out in SHORT CIRCUIT condition

Note: pins 7+9 are only rated at 100mA. For driving loads larger then 100mA use a 12V

interface relay.

Page 11


5.3 Speaker Connection

For correct operation the speakers must be wired in a “loop in” “loop out” basis. “T” connections are not permitted. Each speaker must be fitted with a 22µf bipolar capacitor to prevent DC flowing through the speaker transformer. See PDS218-0008 and 0028 for suitable speakers for this application. At the last speaker, the speaker line must be terminated with an end of line (EOL) resistor valued at 100K.

The module continuously sends a DC signal down the speaker line looking for the 100K EOL resistor. If this is present the OK (green) LED lights.

If the 100K is not found i.e.: open circuit the OPEN CIRCUIT (Red) LED lights.

If the EOL resistor is lower than 100K the SHORT CIRCUIT (Yellow) LED lights.

This signal will not interfere with any audio program being sent to the speakers.

When a fault develops the appropriate LED lights and an output appears at either pin 7 or 9. When either pin 7 or 9 receives an output, this could be used to sound an alarm or operate a relay etc.

Several modules can be connected to the output of one amplifier where several speaker circuits are installed. This way each speaker line can be monitored independent of the others.

Relay coil for externalswitched contacts

Short -

Com +

Open -

Output -

Output +

Input -

Input +

-ve 24VDC

+ve 24VDC

OPEN(Red)

SHORT(Yellow)GREEN(Good)

Figure 11: Line Monitor Card (connections)

Wiring pin outs for the Line Monitor. Take care to note the polarity of the wiring as reversing them may cause damage to the amplifier and / or Line Monitor.

100KEOL

LineMonitor

24VDC

100VAmp

+

-

+

-

+

-

Figure 12: Line Monitor Card (wiring)

Correct Speaker Wiring.

Note: the 100KΩ End of Line Resistor, this must be installed on the last speaker in the run

otherwise the Line Monitor will not operate correctly.

Note: the 100Volt tapped line transformers and the 22μF capacitors

Page 12


Figure 13: Line Monitor Card Circuit Diagram

Page 13


6 Typical Application

30

2-7

18

0

EV

20

CO

NT

RO

L

BR

D4

2E

TG

1-B

CN

12 31

CN

1C

N3

30

2-4

75

C

321C

N1

31

TB

1

MIC

PR

E-A

MP

CN

2321 4 5

1 2

TB

1

43

CN

3C

N2

3

+V

E

-VE

PO

WE

R

FIB

21

10

0V

LIN

EO

/P

TB

1

65 43

97T

B1

LIN

E M

ON

ITO

RIN

G U

NIT

A 2

06

5

TB

1

RL

12 218

12

V

TB

1

+2

4V

0V

I/P

O/P

100K

25

0W

AM

P

LIN

EL

EV

EL

INP

UT

1 2 3

SH

IEL

D

0V

+2

4V

24

0V

PO

WE

RIN

24

VP

OW

ER

IN

10

0V

LIN

EO

/P

C5

& C

647

0uF

63V

(-)

C1

0

(-)

C1

3 (

SH

LD

)W

HIT

E

BLU

E

SH

IELD

2 C

OR

E S

HIE

LD

ED

PIN

1P

IN 2

PIN

3P

IN 4

PIN

5

PIN

1P

IN 2

PIN

3P

IN 4

PIN

5

RL

1/2

EV

AC

UA

TIO

NS

YS

TE

M

EV

20

-B

47K

TB

3

211

00

VO

/P

PS

U

TB

4

(0V

)(+

27

V)

(+B

AT

)

TB

1

(-V

E)

(+V

E)

(+V

E)

(+V

E)

(-V

E)

(-V

E)

BR

D8

5C

LF

B1

CU

RR

EN

T L

IMIT

ER

FU

SE

BO

AR

D

TO

BA

TT

S

CN

1

CN

2

CN

3

CN

4

CN

5

3 4

WA

RN

ING

SY

ST

EM

MO

NIT

OR

ED

33

0-0

03

1

SP

-15

0-2

7

TB

1

5A

PO

WE

R S

UP

PLY

3 2 1

TB

1

6 4

GN

D

N(A

C)

L(A

C)

24

0V

AC

IN

PU

T

VE

+

VE

-F

RO

M P

DL

BL

OC

K

RL

2/2

Figure 14: Typical Application

Page 14


7 Specifications 20W amplifier

SUPPLY VOLTAGE 27VDC (nominal)

QUIESCENT CURRENT 41 mA

MAX. CURRENT DRAW 650 mA

MAX. SPEAKER LOAD 20 Watt RMS (100V line)

ALERT SIGNAL

0 1 2 3 4

0.625sec

0.625sec

ON

OFF

420Hz 420Hz 420Hz

Time in seconds

Australian AS1670.4 Alert Signal

AS1670.4: 420Hz pulsed on and off for 0.625 of a second at 1.25 second intervals

EVACUATION SIGNAL

0 1 2 3 4Time in seconds

OFF

500Hz

1200HzAustralian AS1670.4 Evacuate Signal

0.5

sec

0.5

sec

1.5

secs

0.5

sec

0.5

sec

0.5

sec

0.5

sec

AS1670.4: 0.5 of a second sweep signal 500-1200 Hz pulsed on and off 3 times in 2.5 seconds at 4 second intervals

SPEAKER EOL RESISTOR 47k ohms

FACP INPUT Monitored

DIMENSIONS (mm)

Main EV20 Board 180H x 82W x 55D

Control Card 90H x 35W x 40D

P.A. Input Board (Opt.) 63H x 35W x 18D

Microphone Pre-amplifier Board

SUPPLY VOLTAGE 27VDC (nominal)

QUIESCENT CURRENT 21mA

Voice Messaging Board

SUPPLY VOLTAGE Regulated +5VDC

QUIESCENT CURRENT 1.4mA

Page 15


8 Specifications 250W amplifier

Power output 250 watts RMS

Distortion < 0.5%, @ 1kHz

Frequency response 50Hz - 15kHz, -3dB

Output line 100V, 70V, or 4 - 16Ω

Input sensitivity 500mV balanced

Signal to noise ratio (peak limiting bypassed) > 90 dB

Line output 600Ω balanced, 0dBV

Output Connectors

Speakers Screw terminals

Line out 3 pin XLR

Trickle charge Screw terminals

Input Connectors

Inputs 3 pin XLR balanced

24VDC – 30VDC power Screw terminals

240VAC power IEC power connector

Controls / indicators / Power / Protection / Mechanical

Master Volume (on rear panel)

Power On / Off switch

Indicators Power, Fault, VU meter, Signal Present, Output Peak Limiting and Over Current

Power supply 240VAC or 24VDC (nominal)

Fuse Protection

5A AC and 10A DC (125W)

7.5A AC and 20A DC (250W)

10A AC and 2 x 10A DC (500W)

UNCONTROLLED DOCUMENT

NOTE: Due to Ampac’s commitment to continuous improvement specifications may change without notice.

General Manual - Ampac - World Leader of Innovative …ampac.net/uploaded/Manuals/MAN1549-2_125_to_500W… · · 2015-10-18Open and short circuit speaker line monitoring and protection

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