Zenitel Vingtor stentofon ea1400 User manual

EA1400 / EA1600

Analog Class-D Amplifier

Installation and User Manual

A100K11939

Contents

1Introduction ......................................................................................................... 3

1.1. Document Scope ...................................................................................................................3

1.2. Product Information................................................................................................................3

1.3. Publication Log ......................................................................................................................3

1.4. Rules & Regulations ..............................................................................................................3

2Connectors and Controls.................................................................................... 4

2.1. Cabinet ......................................................................................................................................4

2.2. Power ........................................................................................................................................4

2.3. Audio Input ................................................................................................................................5

2.4. Audio Control ............................................................................................................................5

2.5. Loudspeaker Outputs ................................................................................................................6

2.6. Fault Relay ................................................................................................................................6

2.7. Settings Switch..........................................................................................................................7

2.8. Control In/Out (optional)............................................................................................................7

2.9. Indicators...................................................................................................................................8

3Installation & Wiring............................................................................................ 9

3.1. Unpacking .................................................................................................................................9

3.2. Mounting....................................................................................................................................9

3.3. Cable Layout .............................................................................................................................9

3.4. Mains Power and Grounding.....................................................................................................9

3.5. Input Connection .......................................................................................................................10

3.6. Loudspeaker Connections ........................................................................................................11

3.7. Practical Usage with Calculation Example................................................................................11

3.8. Optional Connections................................................................................................................12

4Startup & System Check ..................................................................................... 14

4.1. Preparations ..............................................................................................................................14

4.2. Sound ........................................................................................................................................14

4.3. Setting Maximum Output Voltage and Power Using a 1 kHz Source .......................................14

4.4. Line Monitoring..........................................................................................................................14

5Service ................................................................................................................. 15

5.1. Service Information ...................................................................................................................15

5.2. Fuse Replacement ....................................................................................................................15

6EA1400 / EA1600 Dimensions............................................................................. 16

A100K11939 EA1400/EA1600 Installation & User Manual 3

1 Introduction

1.1. Document Scope

This document is intended to provide relevant information on the amplifier features, typical configuration,

basic installation and wiring of the EA1400 and EA1600 amplifier. See product datasheet for technical

details.

1.2. Product Information

Item No.

Item Name

Description

1023121400

EA1400

Exigo Amplifier 1 x 400W

1023131600

EA1600

Exigo Amplifier 1 x 600W

1.3. Publication Log

Revision

Date

Author

Status/Comments

1.0

6.3.2020

LK/HKL

Published

1.1

24.8.2020

LK/HKL

Revised Rear Panel, Settings Switch,

Optional Connections

1.4. Rules & Regulations

The EA1400 & EA1600 amplifier and its components have been tested according to the following

regulation:

EN 60945: Fourth edition, 2002

"Maritime navigation and radio communication equipment and systems - General requirements - Methods

of testing and required test results".

4 EA1400/1600 Installation & User Manual A100K11939

2 Connectors and Controls

Figure 1: Amplifier Front Panel

Figure 2: Amplifier Rear Panel

2.1. Cabinet

The amplifier is prepared for mounting in a standard 19” rack and will occupy 2HU in height. The amplifier

can also be free-standing on a level, open surface. The amplifier has a built-in cooling fan but the front and

back must be kept free of objects in order to secure sufficient air flow.

2.2. Power

The amplifier is powered by 100-240 VAC 50/60 Hz mains. There is a mains circuit breaker on the cabinet

rear side, and a mains fuse on the Main Board inside the cabinet. The fuse value is 8A. The amplifier must

be grounded with the main cable, or with a 2.5 mm2wire between the amplifier’s ground terminal and a

proven good PE grounding point.

A100K11939 EA1400/EA1600 Installation & User Manual 5

2.3. Audio Input

This connector is used as a line input and output with a 6-pin Phoenix MiniCombi connector:

Pin#1 & Pin#2: Balanced Line IN audio input for public announcements, alarm messages,

background music, etc.

Pin#3: Line IN audio cable shielding; connected to chassis ground.

Pin#4 & Pin#5: Balanced Line OUT for output daisy chaining of audio signal. It is dependent on the

source impedance how many amplifiers can be driven with the same audio signal. Using a low

impedance source, it is possible to drive 5 amplifiers or more with this daisy-chain method.

Pin#6: Line OUT audio cable shielding; connected to chassis ground.

For more information and application example, please refer to section 3.5. Input Connection.

2.4. Audio Control

Volume adjustment can be done through the potentiometers for Volume, Bass, and Treble.

If the Volume potentiometer is set to the mid-point position and 1Vrms/1kHz is used as input

signal, 100Vrms should be measured on the “100V” loudspeaker output.

For Volume, the control range is between -14dB and +6dB.

For Bass and Treble, the control range is between 0dB and -10dB.

6 EA1400/1600 Installation & User Manual A100K11939

2.5. Loudspeaker Outputs

The loudspeaker outputs have a 3-pin Phoenix 5.08 mm connector:

Speaker Loop: full power output available on the 100V or 70V constant voltage line

Max. cable cross section: 12 AWG / 2.5 mm2

For more information and application example, please refer to section 3.6. Loudspeaker Connections.

2.6. Fault Relay

Fault Relay: NO/NC contacts of a built-in relay is available for remote warning devices. The relay is

activated during various fault conditions such as shorted speaker lines, ground fault,

overtemperature or overload on audio output.

For more information and application example, please refer to section 3.8. Optional Connections.

A100K11939 EA1400/EA1600 Installation & User Manual 7

2.7. Settings Switch

Line-In 10kΩ/600Ω

ON: 10kΩ as line input impedance is selected. This is the default setting.

OFF: 600Ωas line input impedance is selected.

Line Monitoring

ON: Line monitoring enabled A 21-kHz pilot tone signal (not hearable) will be delivered to the

outputs continuously to detect short circuit or ground fault events on the audio outputs lines. Its

amplitude is between 6V..10Vrms on the outputs, depending on the load. (No load = 10Vrms,

@17Ω is about 6V) At over circa 70Vrms output level (in case of alarm) it will be de-activated

automatically to ensure the maximum audio power and to avoid false clipping issues. At under circa

60Vrms output level, it will be re-activated automatically.

OFF: Line monitoring disabled

VOX

ON: Voice Operated Circuit enabled. This function removes the “hum and noisy” silences from the

audio path. This is the default setting.

OFF: Voice Operated Circuit disabled. Noise reduction is disabled.

2.8. Control In/Out (optional)

The RJ45 connector is for remote control and monitoring (without any network capabilities)

For more information and application example, please refer to section 3.8. Optional Connections.

8 EA1400/1600 Installation & User Manual A100K11939

2.9. Indicators

Power

A green LED is lit when the amplifier is powered

Fault

A yellow warning LED will be lit if any of these events have occurred:

Too high temperature

Overload on audio output

Ground fault or short circuit on output (Only if line monitoring is enabled)

Too high audio input signal (>1.5Vrms)

Internal fault

Line Error

A yellow warning LED will be lit by ground fault or short circuit on output. (Only if the line monitor

function is enabled).

VU meter

Green and red LEDs indicate the output level from -18 dB to +1 dB. When it goes over 0dB, clipping

will be activated, and the red LED will be lit.

A100K11939 EA1400/EA1600 Installation & User Manual 9

3 Installation & Wiring

3.1. Unpacking

In addition to the amplifier, 3 pieces mounting plugs (for Audio Input, Audio Output and Fault Relay) are

included in the delivery.

3.2. Mounting

The amplifier is prepared for mounting in a rack with a standard width of 483 mm (19”) and 89 mm (2 HU -

3½”) vertical space.

Rack Temperature: -15°C to +55°C

Zenitel recommends installing the amplifier in a ventilated technical instrument room with temperatures

between +18°C to +25°C. This will also extend the life span of the system. If operated in higher

temperatures, the output RMS power may be degraded by <2dB after a period of continuous operation.

Humidity: <95% RH

Compass Safe Distance: >145 cm

AC power outlet with provision for grounding.

Forced cooling may be needed to avoid overheating of the rack.

WARNING

Failure to observe the above precautions could result in overheating that could damage the equipment or

create a fire hazard.

3.3. Cable Layout

Do not run the installation cable from microphone and alarm panels parallel to, or too near the

cables for loudspeakers or power cables.

The shields must be interconnected in junction boxes and grounded in the amplifier unit only. It is

good practice to have separate conductors for each type of signal cabling.

Two-conductor shielded cable is required for the microphone.

3.4. Mains Power and Grounding

WARNING

Do NOT connect AC power to the amplifier until all the necessary input and output connections have been

completed. Use a dedicated single-phase power input that adheres to the following recommendations:

100..240 VAC, 50-60 Hz, fused and capable of delivering a maximum of 8A .

The operating power should be wired and fused independently from all other inputs.

A warning tag should be attached to circuit-breaker-type fuses to prevent unauthorized manual

operation.

10 EA1400/1600 Installation & User Manual A100K11939

The mains power cable should be 3 x 1 mm2rated for 500 VAC.

WARNING

Do NOT disconnect the third (yellow/green) wire in the power plug. This wire grounds the amplifier’s

chassis to prevent a possible shock hazard. If an adapter is used to connect the plug to an ungrounded

outlet, make sure that the amplifier’s chassis is connected to the vessel’s central ground. In a rack

installation, the amplifier’s grounding point is connected to the rack frame.

3.5. Input Connection

The line inputs are balanced, accepting 0.5 -1.5 Vrms signal over 9 K ohm.

The signal source is connected between pin 1 and 2, and the wire shield is connected to pin 3.

If the signal source is unbalanced, connect the signal wire to pin 1 and the neutral wire to pin 2.

If two or more amplifiers are using the same audio signal, connect the SOURCE terminals on the first

amplifier to the corresponding IN terminals on the next amplifier.

The input levels must be adjusted individually (use VOLUME potentiometer on each amplifier unit).

A100K11939 EA1400/EA1600 Installation & User Manual 11

3.6. Loudspeaker Connections

There are two possibilities of connecting several loudspeakers: Either the 100V output or 70V output as

shown below:

Type EA1400 EA1600

Output 70Vrms 100Vrms 70Vrms 100Vrms

Loudspeakers’

Impedance

12.5Ω @400W 25Ω @400W 8.4Ω @600W 16.7Ω @600W

3.7. Practical Usage with Calculation Example

The 100V / 70V system is used when a large number of speakers are installed and/or the speakers are

placed far from the amplifier. Speakers with a line-matching transformer designed for constant voltage lines

must be used.

12 EA1400/1600 Installation & User Manual A100K11939

The speakers must be connected in parallel. The impedance taps on the primary of the line transformers

determine the power taken from the line. One or more speakers may be removed or added without

affecting the rest of the system.

Speakers are added as needed until the total wattage absorbed by the line transformers is equal to the

rated output power of the amplifier. It is good practice to give a power headroom of 10% - 20%, i.e. a

speaker load of 500W on a 600W amplifier.

Example:

To calculate the maximum number of 30W speakers on a 600W amplifier:

Number of speakers = Amplifier power / Speaker power = 600/30 = 20

3.8. Optional Connections

Fault Relay

Connect one wire from an external warning device to the FAULT RELAY terminal marked COM.

Insert a suitable power supply between the other device wire and the NC terminal.

The relay contacts can switch up to 1 A at 24 VDC.

EXT I/O Control

A100K11939 EA1400/EA1600 Installation & User Manual 13

The EXT I/O control is a RJ45 connector (without any network capabilities) with the following functions:

•GND (Pin#1): Internal 0V

•FAULT (Pin#2): Output for fault signals. External device can get a warning if Class-D circuit has

been broken due to too high temperature or overload error event occurring.

•Line Monitoring (Pin#4):Input for remote control of line monitoring. It can be enabled by

applying “HIGH” level to Pin#4 and disabled by applying “LOW” level to Pin#4.

•+24V (Pin#7): 24V±10% 100mA analog output.

+3.3V levels are used as control signal. “HIGH” level is 3.3V and “LOW” level is 0V.

14 EA1400/1600 Installation & User Manual A100K11939

4 Startup & System Check

4.1. Preparations

All wiring and connections should be finished.

Turn all volume controls down to the minimum position (counter-clockwise).

Connect the power cord to the mains outlet.

Turn the mains switch ON and check that the Power LED is on. Fault and Line Error LEDs may blink

shortly at the beginning, but it should not be lit continuously.

None of the VU meter LEDs should be lit.

4.2. Sound

A signal source must be connected to the Line In input (0.5-1.5Vrms).

Turn the signal source on and set the amplifier volume- and tone controls to the mid position.

Adjust the source volume to the appropriate level.

Check that all loudspeakers connected to the Speaker Loop output (70V or 100V) are sounding

without distortion.

The VU meter should indicate with a pulsating green light.

The PA amplifier has a mute control, which means that if no input signal is present, then Audio Line

input will be muted.

4.3. Setting Maximum Output Voltage and Power Using a1kHz Source

To achieve 100Vrms level without overloading/clipping, the following procedure is recommended:

Turn the amplifier volume control slowly clockwise until the red VU Meter LED lights up. The green

VU Meter LED shall become brighter during this process.

Turn the volume control slowly counterclockwise a little at a time until the VU Meter’s red LED

extinguishes.

Setting of Treble/Bass can affect clipping detection. If this phenomenon occurs, it should be

adjusted with the volume potentiometer.

If Line Monitoring is enabled, its amplitude will be added to the main signal. If the clipping level is

exceeded, it should be adjusted with the volume potentiometer by reducing the amplitude.

4.4. Line Monitoring

The Line Error switch on the rear side of the cabinet should be ON to enable line monitoring.

Line Error switch ON: Line Monitoring functions are enabled.

Line Error switch OFF: Line Monitoring functions are disabled, and there is no line error detection.

The Line Monitoring function can be used permanently (if it is always enabled) or temporarily to test

loudspeaker loops only by service interval. Remote control for temporary or periodical use is preferred. For

more information regarding external control, please refer to section 3.8. Optional Connections.

A100K11939 EA1400/EA1600 Installation & User Manual 15

5 Service

5.1. Service Information

All service on this unit should be performed by qualified service technicians only.

Contact your local Vingtor-Stentofon dealer or representative for service.

WARNING!

Always disconnect the mains power cable before opening the cabinet to avoid electrical shock

hazard and possible damage to the equipment.

5.2. Fuse Replacement

Mains Voltage Protection

There is one replaceable fuse:

F1 on the Main Board near the mains inlet inside the cabinet

A blown fuse normally indicates a malfunction of the amplifier or a short term overload.

Always replace with fuses of same type (Littelfuse 0215008.TXP or Schurter 34.3126) and value

(8AT). On recurring fuse blows, contact qualified service personnel.

16 EA1400/1600 Installation & User Manual A100K11939

6 EA1400 / EA1600 Dimensions

The WEEE Directive does not legislate that Zenitel, as a ‘producer’, shall collect ‘end of life’ WEEE.

This ‘end of life’ WEEE should be recycled appropriately by the owner who should use proper

treatment and recycling measures. It should not be disposed to landfill.

Many electrical items that we throw away can be repaired or recycled. Recycling items helps to save our natural finite

resources and also reduces the environmental and health risks associated with sending electrical goods to landfill.

Under the WEEE Regulations, all new electrical goods should now be marked with the crossed-out

wheeled bin symbol shown.

Goods are marked with this symbol to show that they were produced after August 13, 2005, and should be

disposed of separately from normal household waste so that they can be recycled.

www.zenitel.com

Zenitel Norway AS

A100K11939

Zenitel and its subsidiaries assume no responsibility for any errors that may appear in this publication, or for damages arising from the information therein. Vingtor-Stentofon products are

developed and marketed by Zenitel. The company’s Quality Assurance System is certified to meet the requirements in NS-EN ISO 9001. Zenitel reserves the right to modify designs and

alter specifications without notice. ZENITEL PROPRIETARY. This document and its supplementing elements contain Zenitel or third party information which is proprietary and confidential.

Any disclosure, copying, distribution or use is prohibited, if not otherwise explicitly agreed in writing with Zenitel. Any authorized reproduction, in part or in whole, must include this legend:

DOC NO.

customer.service@zenitel.com

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