Bosch EVAX50R, EVAX25-2ZA, EVAX25R Installation Manual

EVAX 25 / EVAX 50

VOICE EVACUATION INTERFACE SYSTEM

INSTALLATION INSTRUCTIONS

The EVAX 25/ EVAX 50 is a self contained amplifier, tone generator, digital message repeater and supervisory interface. It is designed to be used in conjunction with a UL listed Fire Alarm Control Panel (FACP) to provide a Listed Voice Evacuation Alarm System.

The FACP provides all initiating circuitry and a signalling circuit to the EVAX 25/ EVAX 50. The EVAX 25/ EVAX 50 provides its own internal supervision as well as supervision for its speaker lines. Any fault is reported back to the FACP. In normal standby the supervisory circuit from the panel is connected to a matching EOLR. Should the EVAX 25/ EVAX 50 suffer an internal failure or should there be any fault on the speaker line a contact would open and the FACP would report it as an open fault for that circuit.

The EVAX 25/ EVAX 50 is designed to be powered from 120 VAC at 60 Hz. The EVAX 25 will provide 25W to the speaker circuit. The EVAX 50 will provide 50W. Speakers may be 25 or 70 VRMS (jumper selected, 25 V is factory set).

INSTALLATION

Installer must insure that all wiring and devices installed in system meet the following standards: National Electrical Code (NFPA 70) NFPA Standard 72 Life Safety Code (NFPA 101)

Install equipment in a clean, dry environment, avoid installation where equipment could be subjected to vibration. Remove electronic assemblies from the enclosure prior to any drilling or punching of the enclosure. Where possible, make all cable entries from the rear or sides. Before making any modifications to the enclosure, be certain that they will not interfere with assemblies or batteries.

WIRING (Refer to wiring and terminal designation diagrams)

1. Connect speaker lines to TB1 - 5(+) & 6(-), observe polarity and insure all speakers are connected likewise. For Class "A" (Style "Z") the returns are TB1 - 7(-) & 8(+).

2. Insure that the microphone is attached to connector P2. If Microphone is not installed insure that switch SN2 - 8 is in the OFF position.

3. Attach the appropriate EOLR for the FACP to TB3 - 3 & 4 and TB3 - 5 & 6. This value must be placed at the end of the speaker line as well. You must use EOLR value as specified in the FACP manufacters installation instructions for the indicating appliance circuit. Note: if your system includes one or more EVX-4Z zone splitters, the FACP EOLR is relocated. See EVX-4Z install instructions P/N 1-5010 Rev B.

4. Connect FACP signalling circuit to TB1 - 3(+) & 4(-), Alarm Polarity.

5. Connect 120 VAC, 60 Hz, power to the black and white pigtail leads from transformer primary. Secure ground lead to grounding stud in cabinet.

6. Once power is on to the unit, connect battery wiring harness, Red (+) / Black (-).Observe polarity. Minimum battery size is 24V 7AHr. Maximum battery size is 18Ahr. (use 2 12V batteries connected in series, see typical installation diagram). If the unit does not have its own batteries and relies on an external power supply with battery back-up, insure that switch SN2 - 7 is in the OFF position. NOTE: Wiring for batteries is Non Power-Limited. Care must be taken to insure that all Power-Limited wiring maintain a minimum spacing of ¼" from any Non Power-Limited wiring. If batteries must be located in separate enclosure, provide separate conduit run for battery wiring only.

Once all power and circuits are connected, the Green LED will remain on to indicate that the EVAX 25/ EVAX 50 is fully operational and all circuits are nominal.

P/N 1-5001 REV. E

EVAX 25 / EVAX 50

TERMINAL DESIGNATIONS

TB1: TER 1 & 2 - Power Input 24-32V AC/DC @ 2.5A (NOTE 1, 4) TER 3 & 4 - FACP Signal Circuit Input - 10mA max. (Alarm Polarity shown) (NOTE 1, 4) TER 5 & 6 - 25/70 VRMS Speaker Loop Style Y/Z (Class “A”/”B” start) (NOTE 2, 4) TER 7 & 8 - 25/70 VRMS Speaker Loop Style Z (Class “A” return) (NOTE 2, 4)

TB3: TER 1 & 2 (NOTE 1, 4)

Optional FACP Supervisory Circuit See installation instructions for details (32V - 0.4A max.). Factory set for none - J1

TER 3 & 4

FACP Signal/Supervisory Circuit EOLR

TER 5 & 6

Matching EOLR for speaker supervisory circuit

TER 7 (NOTE 1, 3, 5) General purpose output (pulls to circuit neg on fault condition 32V - 0.2A max). Not for Fire Protective Signaling use.

TER 8 (NOTE 1, 3,5) Trouble input +24 VDC 5mA

NOTES: 1 - Intended for connection to Listed Class 2 / Class 3 (Power Limited) sources only. 2 - Power Limited 3 - Non-Supervised 4 - Supervised 5 - Terminating equipment must be installed in same room as EVAX 25.

FACTORY DEFAULT SWITCH / JUMPER SETTINGS:

SN1

1 = OFF 8 sec. initial delay 2 = ON 3 = OFF 4 = ON 8 sec. repeat delay 5 = OFF 6 = ON Message On 7 = OFF 3 Repeats 8 = ON

TB1

TB3

1 2 3

1 2

3 4

MIC

GAIN

FAULT

NORMAL

ALARM

5 6 7 8

MSG GAIN

YEL

GRN

RED

YEL

GROUND

FAULT

SN2 SN1

1 8

Switch Network Detail

SN2 1 = OFF Temporal Whoop Signal 2 = OFF 3 = OFF 4 = Fault Code Lock 5 = X Do not use 6 = AC Fault Delay 7 = ON Battery connected 8 = ON Mic connected

5 6 7 8

1 2 3

70V 25V

OFF

TB2: TER 1 - Circuit Neg

TER 2 (NOTE 1, 3)

Aux Audio Input (0.5V nominal) (1VRMS - 1mA max.)

TER 3 (NOTE 1, 3, 5) PreAmp In/Out (600 Ohm 0dBm)

TER 4 (NOTE 1, 3, 5) Master - Programmable +24VDC Active Slave - +24VDC Input

1 2

TB2

11 10

9 8 7 6 5 4

3 2 1

TER 5 (NOTE 1, 3, 5) Signal Active Master - Out / Slave - In

TER 6 (NOTE 1, 3) Aux Audio Enable (+24V)(32V - 5mA max.)

TER 7 (NOTE 1, 3) Aux Signal Activate

(+24V) (32V - 5mA max.)

TER 8 (NOTE 2, 3, 5) Alarm Voltage +24V when unit is in alarm condition (0.1A)

TER 9 (NOTE 2, 3) Int V+ (+24V) disconnected in alarm condition (0.1A)

TER 10 (NOTE 2, 3) V+ (+24V 0.1A)

TER 11 (NOTE 5) Mic PTT (+24V 0.1A)

J1 A/B 1 - 2 = SHORT

J2 25 VRMS 2-3 = SHORT 70 VRMS 1-2 = SHORT

To change output voltage move shorting block.

J5 1 + 2 SHORT = Ground Fault Enable

AUX +24VDC OUTPUT - TB2-4,8, 9 & 10 These terminals provide a max. 200 mA of regulated 24VDC power for auxiliary functions. Do not exceed 200 mA load combined on these terminals. For connection to Listed General Signal devices only (Non-Fire Protective Signalling applications). Terminal 4 activation is programmed in the U6 eprom chip. Standard chips are programmed for TB2-4 to go active +24VDC under the following conditions: Aux Signal Active, Aux Audio Enable, Bell Circuit Active, RSI Active. Reprogramming of these functions must be done at the factory and require replacing eprom U6.

CONNECTION OF AN AUX AUDIO SOURCE - TB2-1 & 2 An aux audio source from additional paging equipment may be connected to the EVAX 25/50 to augment an existing paging system. It is not intended for continuous signal input, but may be used for paging applications. For such an operation the Aux Audio Enable input, TB2-6, must be powered from Int V+, TB2-9. This is to insure that in the event of an alarm, the aux audio will not override the evacuation signal. See Wiring Diagram 5 for connection detail.

OPTIONAL SUPERVISORY CIRCUIT - TB3-1 & 2 In place of normal supervision via the signalling circuit, an alternate method may be employed using any supervisory circuit from the FACP. Connection would be made to Terminal Block 3, Ter. 1 and 2. This would provide a normally closed connection to the EOLR on Ter. 3 and 4. The relay contact in the circuit will open upon any trouble condition and report an open circuit trouble to the FACP. NOTE, jumper shorting blocks A and B must be removed from J1 if a circuit is to be connected in this manner. See Optional Supervisory Circuit Application (Wiring Diagram 2) for connection detail.

OPERATION

In normal standby the Green LED will remain on.

In alarm condition the Red LED will remain on as long as the unit is in alarm. Green LED will also remain on.

Alarm Sequence Factory settings: Alarm Tone - Alarm Signal 5 seconds / Digital Message plays / Alarm Signal 5 seconds / Digital Message plays / Alarm Signal 5 seconds / Digital Message plays / unit reverts to Alarm Signal until alarm condition is cleared. If the Mic is keyed it will override both the tone and the message so a direct broadcast may be made. If this occurs during the initial sequence the digital message will be reset and will not play.

When the Mic is keyed or when the message is played the Green LED will dim. The intensity of the Green LED will vary with the level of the broadcast audio. This is true in Alarm condition as well.

Under a fault condition, the Yellow LED will remain on. The Green LED will flash. The number of flashes display a code depending on the specific type of fault. When there is a fault condition the contact connecting the FACP signal circuit to the EOLR will open indicating the fault to the panel which will provide annunciation. During a ground fault condition, Yellow LED 4 will illuminate.

SPECIFICATIONS: EVAX 25 EVAX 50

Input Voltage 120 VAC at 60 Hz 120 VAC at 60 Hz Input Current 1.4 A @ 120 VAC 0.8 A @ 120 VAC Input Current (Battery) 0.18 A Standby 0.13 A Standby

1.0 A Alarm 1.0 A Alarm

0.31 A Standby w/Aux Load 0.26 A Standby w/Aux Load Output power 25 W 50 W Freq. Response 800 - 2800 Hz 400 - 4000 Hz Output Voltage 25/70 VRMS Selectable 25/70 VRMS Selectable *Optional 24 VDC input 0.6 A Standby 0.6 A Standby

1.0 A Alarm 1.0 A Alarm

2.9 A Sine 3.4 A Sine Output Protection Power Limited, Open and Short Circuit protected

*Input current measurements are determined by test conditions under UL 1711. Sine represents measurements made while unit produces a continuous non-distorted sine wave of 1 Khz into the rated load of 25/50W at rated output voltage. Alarm is the average current the unit experiences delivering an alarm signal, Temporal Whoop, to the rated load. Standby is the current draw of the unit with all normal power on and aux. terminals fully loaded. Battery Standby is current draw from the batteries on loss of power and otherwise normal standby.

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