Dynacord 4120, 4140 User Manual

Size:
356.07 Kb
Download

POWER AMPLIFIER DPA 4120 / DPA 4140

OWNER'S MANUAL

DPA 4140

40 0 WATTS POWER AMPL IFIER

CLIP

T EST

0dB

 

- 13dB

 

READY

STANDBY

GROUND

PROT ECT

FAULT

 

Performance Features

Power amplifier with 200 W or 400 W output power according to the IEC 283-3standard within a 19“ - cabinet (3 HU) providing the following functions:

supported are 115/230V AC mains as well as 24V DC emergency power source

power amplifiers DPA 4120 providing 200 W or DPA 4140 providing 400 W output power, idling and short-circuitprotection

output transformer for balanced, floating 100 V speaker networks of optionally 70 V, 50 V or 4 ohms for low-impedanceoperation

optional input modules:

standard operation INPUT MODULE with level control, electronically balanced input and MONITOR output with optional transformer or

REMOTE MODULE for controlling and monitoring the PROMATRIX system, electronic level controls, electronically balanced input and MONITOR output with optional transformer

integrated stand-bypower supply

mains POWER ON/OFF switch

ground lift switch

remotely controllable mains and battery operation with initial current inrush limiter

power-onswitching noise suppression

status-LEDindicators for operation (READY), STANDBY, thermal overload (PROTECT) and occurrence of GROUND FAULT conditions at the power output

fault message according to the IEC 849 standard

TEST button to switch between system and average operation, respectively a RESET button to restart after the occurrence of ground fault conditions

LED level meter instrument with a display range of -13dB to 0 dB and CLIP

integrated relays for single call and obligatory reception

active, temperature controlled ventilation

pilot tone and ground fault surveillance module according to the DIN/VDE 0800 standard (optional)

23

24

Indicators, controls and connections

1 2

DPA 4140

4 0 0 WATT S PO WE R AM P L IFI ER

C LIP

TES T

0 d B

 

-13 d B

 

R EAD Y

STAN DBY

G RO UN D

PR OTE CT

FAUL T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

7

6

3

4

5

A 9 A 10

11

12 A

13

B

 

 

 

 

 

T4A FOR 230V

 

 

 

NOUSER SERVICEABLEPARTS INSIDE. REFERSERVICING

 

 

 

 

 

 

 

 

 

 

 

 

T8A FOR 115V

VOLTAGE

 

TO QUALIFIED SERVICE PERSONNEL.

 

 

 

DPA 4140

 

 

 

 

 

 

 

 

SELECTOR

 

 

 

 

 

 

 

 

P OWER

 

 

 

115V

230V

 

 

 

 

 

 

 

 

14

 

 

 

 

 

 

 

 

 

 

 

 

 

121629

 

INPUT

 

 

 

ACMAI NS I NPUT

 

 

 

 

 

 

 

 

MADEIN GERMANY

 

 

 

 

115V / 230V

AC 50-60Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE

 

 

 

 

 

 

 

 

 

 

 

 

REPLACEWITH SAME TYPEAND VALUE FUSEINDICAT ED.

 

 

 

 

 

 

 

 

 

THRU

15

 

 

ATTENTION:REMPLACER PAR UN FUSIBLEDEMEMETYPE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMMEINDIQUE.

 

 

 

 

 

 

 

 

 

B

A

 

 

 

 

 

 

C AUTION

 

 

 

 

 

 

 

5 6 7

 

 

 

 

 

 

 

 

 

 

 

 

ADDRESS

3 4

 

 

 

 

RISK OF ELECTRICSHOCK

 

 

 

 

 

 

 

 

2

8

 

 

 

 

 

DO NOT OPEN

 

 

 

 

 

 

 

OUT PUT

1

9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VO LTAG E

0

1 0

 

 

 

WARNING: TO REDUCETHERISK OF FIRE ORELECTRIC SHOCK,

 

 

 

 

 

 

 

LEVEL

 

 

 

DO NOT EXPOSE THISAPPLIANCETO RAINOR MOISTURE.

 

 

 

 

 

 

 

 

 

REMOTE

16

 

 

AVIS:RISQUEDECHOCELECTRIQUE. NEPASOUVRIR.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTROL

 

 

DCI NPUT 24V

CIRCUIT T O

 

 

 

 

POWEROUTPUT

 

 

 

 

 

CHASSISSWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

GROUNDED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UNGROUNDED

 

 

 

VO R ÖF F NEN DES G ER ÄTES NET Z ST ECKER Z IEHEN

1

2

3

4 5

 

 

 

 

 

 

 

 

 

 

 

 

 

90225

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

 

19

 

 

 

18

 

17

 

B

 

A

9

A

10

11

12

A

 

 

 

 

 

15

B

 

 

 

 

 

 

T4A FOR230V

 

 

 

NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING

 

 

 

 

 

INPUT

 

 

 

 

 

 

T8A FOR 115V

VOLTAGE

 

TO QUALIFIED SERVICE PERSONNEL.

 

 

 

DPA 4140

 

 

 

 

 

 

 

SELECTOR

 

 

 

 

 

 

 

 

POWER

 

 

 

115V

230V

 

 

 

 

 

 

 

 

14

 

 

 

 

 

 

 

 

 

 

 

 

121629

 

 

 

 

 

AC MAINS INPUT

 

 

 

 

 

 

 

 

M ADEIN GERMANY

 

ADDRESS

 

 

 

115V /230V AC50-60Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION: FORCONTINUED PROT ECTIONAGAINST RISKOF FIRE

 

 

 

 

 

 

 

 

A

21

 

 

REPLACEWITHSAME TYPEAND VALUEF USEINDICATED.

 

 

 

 

 

 

 

 

 

 

 

 

ATTENTION:REMPLACERPARUN FUSIBLE DE MEME TYPE

 

 

 

 

 

 

 

 

B

 

 

 

COMMEINDIQUE.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

A

 

 

 

 

 

 

CA UTION

 

 

 

 

 

 

 

AD DRESS

 

THRU

 

 

 

 

RISKOF ELECTRIC SHOCK

 

 

 

 

 

 

 

 

 

IN

 

 

 

 

 

DO NOT OPEN

 

 

 

 

 

 

 

O UT PUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VO LTAGE

 

 

 

 

 

WARNING: TO REDUCE THE RISKOF FIREOR ELECTRICSHOCK,

 

 

 

 

 

 

 

REMOTE

22

 

 

DONOT EXPOSE THIS APPLIANCE TO RAIN ORMOISTURE.

 

 

 

 

 

 

 

 

CONTROL

 

 

AVIS: RISQUEDECHOC ELECTRIQUE. NEPASOUVRIR.

 

 

 

 

 

 

 

 

 

 

 

 

 

DC INPUT 24V

CIRCUIT TO

 

 

 

 

P OWEROUTPUT

 

OUT

 

 

 

CHASSIS SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

GROUNDED

 

 

 

 

 

 

 

 

 

STATUS

23

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UNGROUNDED

 

 

 

VO R Ö FF NEN DES G ERÄTES NET Z STECKER Z IEHEN

1

2

3

4 5

 

 

 

 

 

 

 

 

 

 

 

 

 

90222

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

 

19

 

 

 

18

 

17

 

B

 

1

level meter instrument

10

Mains power connector AC MAINS INPUT

2

CLIP indicator

11

Mains fuse FUSE

3

Test and Reset button TEST

12

Mains VOLTAGE SELECTOR

4

STANDBY indicator

13

Input LEVEL control

5

Fault indicator PROTECT

14

INPUT socket

6

Fault indicator GROUND FAULT

15

THRU socket

7

Mode indicator READY

16

REMOTE CONTROL connector

8

Ventilation louvres

17

POWER OUTPUT

9

Mains power switch POWER

18

Ventilation louvres

25

19

CIRCUIT TO CHASSIS SWITCH

B locking screws INPUT MODULE

20

DC INPUT 24V = (battery)

 

21

IDENT ADDRESS switch

 

22

REMOTE CONTROL connectors

 

23

STATUS indicator

 

A locking screws power supply printed board

Contents

 

Performance Features.........................................................................................................................

23

 

Indicators, controls and connections ....................................................................................................

25

1.

Utilization

.........................................................................................................................................

27

2.

Installation ........................................................................................................................................

27

3.

Before the first operation .....................................................................................................................

27

 

3.1

Mains operation ..........................................................................................................................

27

 

3.2

Battery operation 24V DC .............................................................................................................

28

4.

INPUT ...............................................................................................................................................

 

28

5.

Outputs .............................................................................................................................................

 

29

 

5.1

POWER OUTPUT........................................................................................................................

29

 

5.2

POWER OUTPUT for 100V (70V or 50V) loudspeaker systems........................................................

29

 

5.3

SINGLE CALL and obligatory reception relays OVERRIDE BYPASS................................................

29

 

5.4

POWER OUTPUT for low impedance loudspeaker systems.............................................................

29

 

5.5

MONITOR output .........................................................................................................................

30

 

5.6

REMOTE CONTROL connector (only NRS 90225) ..........................................................................

30

6.

Indicators ..........................................................................................................................................

 

30

 

6.1

STANDBY indicator......................................................................................................................

30

 

6.2

READY indicator..........................................................................................................................

30

 

6.3

PROTECT indicator......................................................................................................................

30

 

6.4

GROUND FAULT indicator............................................................................................................

30

 

6.5

Aussteuerungskontrolle und CLIP-Anzeige .....................................................................................

31

7.

Switching the output voltage ................................................................................................................

31

8.

Enhanced application field...................................................................................................................

32

 

8.1

General input module NRS 90225..................................................................................................

32

 

8.2

Remote module NRS 90222..........................................................................................................

32

 

8.3

NRS 90208 input transformer for the floating, balanced input ............................................................

33

 

8.4

NRS 90227 output transformer for the floating, balanced monitor output ............................................

33

 

8.5

NRS 90224 pilot tone and ground fault surveillance..........................................................................

35

 

8.5.1

Pilot tone surveillance..........................................................................................................

35

 

8.5.2

Ground fault surveillance......................................................................................................

35

9.

19"-caseand19“-rackshelf system installation.....................................................................................

38

10.

Ground lift switch CIRCUIT TO CHASSIS SWITCH..............................................................................

38

11.

Fuses................................................................................................................................................

 

38

 

11.1

Fuses in the DPA.......................................................................................................................

38

 

11.2

Fuses in the DPA.......................................................................................................................

38

12.

Power amplifier specifications ..............................................................................................................

42

 

12.1

DPA 4120 power amplifier 200 W.................................................................................................

42

 

12.2

DPA 4140 power amplifier 400 W.................................................................................................

43

13.

Extension specifications .....................................................................................................................

44

 

13.1

NRS 90225 general input module.................................................................................................

44

 

13.2

NRS 90222 remote module .........................................................................................................

44

 

13.3

NRS 90208 input transformer for floating, balanced input ................................................................

44

 

13.4

NRS 90227 output transformer for floating, balanced monitor output ................................................

44

 

13.5

NRS 90224 pilot tone and ground fault surveillance........................................................................

44

14.

Block diagrams ..................................................................................................................................

67

 

14.1 Power amplifiers DPA 4120 / DPA 4140 ........................................................................................

67

 

14.2

NRS 90225 general input module.................................................................................................

68

26

14.3

NRS 90222 remote module .........................................................................................................

69

14.4

NRS 90224 pilot tone and ground fault surveillance........................................................................

70

15. Warranty ...........................................................................................................................................

72

1.Utilization

The amplifiers DPA 4120 and DPA 4140 are specially designed for the power-consistentand reliable operation of PAsystems. The DPA 4120 and DPA 4140 are intended to be used in company intercom, alarm and background music transmission installations, offices and commercial areas, congregation and sport centers, schools, churches, hotels, hospitals, shopping malls and super markets, cruise ships, and other similar applications.

2.Installation

When installing the amplifiers, it is important to assure that for ventilation reasons the front-to-rearair circulation is guaranteed (for details on19"-caseor19“-rackshelf installation please refer to paragraph 9).

To maintain EMC it is necessary that all input, output, and control lines – except for the power cords – are shielded. Within metal housings or closed rack shelf systems, unshielded output and control cabling is allowable. Shielding is accomplished by connecting the individual cable screens to the enclosure or rack shelf ground potential.

The amplifier has to be protected from:

-water drops or splashes

-direct sunlight

-high ambient temperatures and the direct radiation of heat sources

-high humidity and moisture

-heavy dust

-massive vibrations

Moving the amplifier from a cold into a warm environment can result in the occurrence of condensation on inner parts. Operating the appliance is only permissible after it has accommodated to the altered temperature (approximately after one hour).

Should it happen that foreign solid parts or liquids inadvertently intrude the enclosure, unplug the device from the power source and have it checked by a DYNACORD service center, before using it again.

Cleaning the appliance should not be performed using chemical solvents or sprays, as this might damage the finish and moreover could cause hazard fire.

3.Before the first operation

These power amplifiers are designed to be operated with different input modules. The general input module NRS 90225 is meant for all conventional applications. It allows to remotely start the amplifiers via control lines, monitor their operation by use of the incorporated fault relay, and monitor the transmitted audio signals through the monitor output. Using the remote control module NRS 90222, the amplifiers are connected to the PROMATRIX manager DPM 4000 via RS-485remote interface providing complete remote operation and surveillance. The desired input module has to be inserted into the module shaft on the rear of the power amplifier. It has to be tightened using the two locking screws

(B) (refer also to the paragraphs 8.1 and 8.2).

3.1Mains operation

For normal AC mains operation, the included mains cord has to be connected to a 230V or 115V 50/60Hz wall outlet. On the appliance itself, the cord has to be connected to the 3-polemains socket (10).

Caution The appliance is factory preset to230V AC. Switching to 115V AC is accomplished using the voltage selector (12).

27

DPA 4120: For115V AC operation, the mains fuse (11) has to be replaced by aslow blowing 4 ampere type, labeled "T4A" (see also paragraph 11.1).

DPA 4140: For115V AC operation, the mains fuse (11) has to be replaced by aslow blowing 8 ampere type, labeled "T8A" (see also paragraph 11.2).

If the appliance is correctly connected and mains is present the green STANDBY indicator (4) will light. To remotely start the amplifier when it is being operated on the mains, it is necessary to interconnect the contacts 3 - POWER REMOTE and 2 - GROUND STANDBY on the pin terminal strip REMOTE CONTROL (16) (see also paragraph 5.6).

The main power switch POWER (9) on the rear of the appliance is meant for service and maintenance purposes. This allows bridging the mains switching relay, which provides the possibility to operate the amplifier without remote start.

Note

The main power switch POWER (9) on the appliance's rear is only meantfor maintenance. Remotely

 

switching off the device is not possible when the POWER switch is engaged.

 

 

Both amplifiers, the DPA 4120 and the DPA 4140, employ power-onswitching delays of approximately 3 sec. After this time, the green READY indicator lights and the READY fault message relay picks up when no error is being detected (see also paragraph 6.2).

3.2Battery operation 24V DC

The amplifiers, DPA 4120 and DPA 4140, use the mains or alternatively an external 24V battery as power source. Switching to battery is performed via integrated relays.

The battery has to be connected on the rear of the amplifiers (20) using insulated 6.3x0.8 mm AMP flat plug connectors. The amplifiers are protected againstpolarity-mismatch.Each, the positive and negative conductors are internally protected by fuses, located on the printed board assembly 85270 (DPA 4120) respectively 85268 (DPA 4140) (see also paragraph 11, figure 10 and 11).

The cable used for battery connection has to be at least 1.5 mm2 in diameter (DPA 4120) respectively 2.5 mm2 (DPA 4140). Using these diameters, the cable length for the one way distance should not exceed 4.0 m (max. voltage drop <1V).

Caution The DPA 4120 and DPA 4140 are to be operated only using ungrounded batteries or batteries with grounded negative pole. Operation with grounded positive pole is not permissible.

4.INPUT

The electronically balanced INPUT (14) providing a sensitivity of 775mV = 0dBu is meant for the connection of control amplifiers. In case it is intended to supply several power amplifiers with identical input signals, these signals can be taken from the THRU connector (15) (see also figure 1 and 2).

The input is prepared to be retrofitted with a input transformer. In case a floating input is needed, it is necessary to install the optional extension NRS 90208 (see also paragraph 8.3).

On the general input module NRS 90225 the input level is set with the level control (13). For the remote control module NRS 90222 the input level is determined by the setting of the internal electronic level control of the PROMATRIX manager DPM 4000 (please also refer to the PROMATRIX handbook).

28

figure 1 connections of the input sockets

figure 2 LF cable for coupling two amplifiers DPA 41xx

5.Outputs

5.1POWER OUTPUT

The power output is balanced and off-groundpotential. The output isfactory-configuredfor the connection of 100V loudspeaker systems. Connection has to be performed by inserting the supplied5-poleplug into the power output socket (17). Switching the output voltage to 70V, 50V or to low impedance operation (4 ohms) is possible using theplug-inbridge B411 on the printed board assembly 84187 (DPA 4120) respectively 84175 (DPA 4140) (see also paragraph 7).

figure 3 connection of the power output

5.2POWER OUTPUT for 100V (70V or 50V) loudspeaker systems

If the distance between the amplifier and the loudspeakers exceeds 50 m, it is recommended to operate the speaker systems using 100V matching transformers, to reduce line attenuation. This additionally offers a simple way of distributing the output power capacity. In this way it is possible to connect a maximum of as many loudspeaker systems as it takes until the total power consumption of the entire speaker network equals the power output capacity

29

of 200W (connection impedance 50 ohms) with the DPA 4120, respectively 400W (connection impedance 25 ohms) with the DPA 4140. Connection is performed using the 100V output (17) (see also figure 3). In a few special cases it is also possible to operate the loudspeaker systems with 70V or 50V output voltage (see also paragraph 7).

Caution It is possible that during operationshock-hazardoutput voltages can be present at the POWER OUTPUT connector (>34V peak value). Thus, the connected loudspeaker groups have to be installed in accordance to applicable security standards and regulations (see also paragraph 8.5.2).

5.3SINGLE CALL and obligatory reception relays OVERRIDE BYPASS

Combined with the PROMATRIX manager DPM 4000 or other external controls it is also possible to transmit single or collective calls with obligatory reception; i. e. bridging of possibly existing volume controls of the loudspeaker systems. For details on how to connect the outputs, please refer to figure 3; for the connection of relays, please refer to paragraph 5.6 respectively the PROMATRIX handbook.

5.4POWER OUTPUT for low impedance loudspeaker systems

Switching the output to 4 ohms allows the connection of low impedance loudspeaker systems (4-16ohms) (see also paragraph 7 and figure 3). Because of the occurring line attenuation, the distance between amplifier and loudspeaker system should not exceed 50m. Please make sure that the overall loudspeaker impedance does not decline a value of 4 ohms and that the stated power handling capacity of a single speaker system is not exceeded.

5.5MONITOR output

The MONITOR output (16) on the NRS 90225 allows the connection of an additional power amplifier for monitoring purposes. The low impedance output is electronically balanced, which offers the possibility to achieve cable lengths of up to 200 m. Connection is performed via the REMOTE CONTROL pin-connectorstrip (see also figure 4). For the remote control module NRS 90222, the MONITOR output is located on the REMOTE CONTROL connector (22). The PROMATRIX manager DPM 4000 switches the signal to the according the monitor channel. In case a floating output is required, the monitor output is prepared for retrofitting an output transformer; provided through the optional extension NRS 90227 (please also refer to paragraph 8.4).

Note: Functioning changes in the models DPA 4120 (starting with serial numbers: 100 11) and DPA 4140 (starting with serial numbers: 100 11) in association with the input module NRS 90225: To achieve reliable attenuation of switching noise (knacks), the monitor output stays muted as long as theREADY-relayis not pulled. Because of circuit design reasons this causes that the monitor output is also muted even when aground-faultappears at the main output.

5.6REMOTE CONTROL connector (only NRS 90225)

The 15-polesub-DREMOTE CONTROLpin-connectorstrip (16) provides several different controlin-/outputs:

- Ground of the stand-bypower supply

- negative pole grounded

- POWER REMOTE

- via contact to ground potential

- BATTERY REMOTE

- via contact to ground potential

- MONITOR output

- electronically balanced

- READY-message

- with floating contact

- Obligatory reception relay D-RELAY

- via contact to ground potential

- Single call E-RELAY

- via contact to ground potential

2STANDBY GROUND

3POWER REMOTE

4BATTERY REMOTE

5

D - RELAY

REMOTE CONTROL

6

E - RELAY

 

7

 

 

8

 

READY

15

9+ MONITOR

10- MONITOR

figure 4 connections on the REMOTE CONTROL pin-connectorstrip

6.Indicators

30

6.1STANDBY indicator

When the appliance is correctly connected and mains and/or battery power is present, the green STANDBY indicator

(4) will light.

6.2READY indicator

Both amplifiers, the DPA 4120 and the DPA 4140, employ power-onswitching delays of approximately 3 sec. to effectively eliminatepower-onswitching noise. After this time, the green READY indicator (7) lights and the READY fault message relay picks up when no error is being detected. When the power amplifier's mains transformer exceeds a certain value or, when – with installed NRS 90224 extension – the pilot tone falls below the threshold (see also paragraph 8.5.1), the green READY indicator (7) is not lit and the READY fault message relay drops.

6.3PROTECT indicator

When thermal overload of the mains transformer or the power amplification stage is encountered, the red PROTECT indicator (5) will light and the READY fault message relay drops. After the amplifier regained normal temperature, the red PROTECT indicator (5) is automatically dimmed and the appliance returns to normal operation. High temperature can be caused by overload, extreme ambient temperatures or faulty functioning of the system's ventilation.

6.4GROUND FAULT indicator

If, with the NRS 90224 extension installed, a ground fault is being detected at the power output, the red GROUND FAULT indicator (6) will light and the READY fault message relay will drop. During the occurrence of this error normal operation is maintained. After eliminating the cause for the ground fault, pressing the TEST button (3) resets the GROUND FAULT indicator (6) (see also paragraph 8.5.2).

6.5Level meter and CLIP indicator

The green LED-indicators-13dBand 0dB (1) together with the redCLIP-LED(2) allow to monitor the output level, effectively avoiding overdrive conditions that lead to distortion and overload at the power outputs which could damage the connected loudspeaker systems.

-If the red CLIP-LED(2) shortly lights during program peaks, maximumnon-distortedmodulation is achieved.

-Continuous lighting or blinking of the red CLIP-LED(2) signals overdrive. In this case the input level has to be reduced.

-If the green LED indicator (1) does not light or is only briefly lit with the red CLIP-LEDblinking at the same time, this signals the encountering of an overload orshort-circuitcondition at the output. In this case the impedance of the connected load has to be checked.

Caution During normal operation the redCLIP-LEDshould only light briefly and shortly!

7.Switching the output voltage (only to be performed by a qualified service technician!)

The DPA 4120 and DPA 4140 amplifiers allow the connection of 50V, 70V, 100V or low-impedanceloudspeaker systems (4 ohms). They arefactory-presetto an output voltage of 100 V. Switching the output voltage to 4 ohms, 50V or 70V can be performed by changing the bridge B411 on the power amplifier printed board assembly 84187 (DPA 4120) or 84175 (DPA 4140):

Caution Before opening the appliance, make sure to disconnect the mains and/or battery power source!

-To open the appliance, the top panel has to be removed.

-The bridge B411 (yellow wire) has to be removed from the contact B407 and re-attachedto the desired contact (see table 1) (see also figure 8 respectively figure 9).

-he coding-bridgesS405 and S406 for the output recognition have to be inserted according to the illustration in figure 5.

(the inserted coding-bridgeis marked in black)

-The top panel has to be re-attached.

Note

By using a waterproof marker pen and after switching the output voltage, the newly set value

 

has to be marked in the filed "OUTPUT VOLTAGE" on the rear panel of the appliance.

 

 

31

output

bridge

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B411 to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100 V

B407

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

70 V

B408

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50 V

B409

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4 ohms

B410

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

table 1 bridge B411 settings switching the output voltage

figure 5 coding-bridgesS405 / S406 settings output recognition OUTPUT CONFIG

Caution It is possible that during operationshock-hazardoutput voltages can be present at the POWER OUTPUT connector (>34V peak value). Thus, the connected loudspeakers have to be installed in accordance to applicable security standards and regulations (see also paragraph 8.5.2).

8.Enhanced application field

8.1Standard input module NRS 90225

This input module for the power amplifiers DPA 4120 and DPA 4140 is meant for insertion at the power amplifiers' rear. It provides the following functions:

lockable XLR input connector

XLR output connector; to patch the input signal through

gain control; to be adjusted using a screwdriver

mains remote ON/OFF

battery remote ON/OFF

control of the D- and E-relays

fault messages via the READY relay contact:

-thermal overload of the mains transformer

-thermal overload of the power amplification stage

-ground fault (optional; only with installed NRS 90224)

-pilot tone signal (optional; only with installed NRS 90224)

MONITOR output; electronically balanced

input transformer for floating, balanced input; optional

output transformer for floating, balanced monitor output; optional

The input module is meant to be used with the power amplifiers DPA 4120 and DPA 4140. The module allows to control and monitor the operation of the power amplifiers using conventional equipment or (with reservations) by the PROMATRIX manager DPM 4000.

Caution: Before installing the input module NRS 90225, you have to unplug the mains connector as well as a presumably connected battery cord.

Before installing the input module, it is necessary to remove the two locking screws B on the rear panel of the appliance. For installation the printed board assembly first has to be inserted into the guiding rails. After carefully pushing the module in it has to be locked by using the two screws mentioned before.

32

Note: Functioning changes in the models DPA 4120 (starting with serial numbers: 100 11) and DPA 4140 (starting with serial numbers: 100 11) in association with the input module NRS 90225: To achieve reliable attenuation of switching noise (knacks), the monitor output stays muted as long as theREADY-relayis not pulled.

Because of circuit design reasons this causes that the monitor output is also muted even when a ground-faultappears at the main output.

8.2Remote module NRS 90222

This input and remote module for the power amplifiers DPA 4120 and DPA 4140 is meant for insertion at the power amplifiers' rear. It provides the following functions:

lockable XLR input connector

XLR output connector; to patch the input signal through

input level; can be set via a programmable audio level control

MUTE (via level control)

mains remote ON/OFF

battery remote ON/OFF

control of the D- and E-relays

surveillance and fault messaging via the PROMATRIX manager DPM 4000 corresponding to IEC 849

-thermal overload of the mains transformer

-thermal overload of the power amplification stage

-ground fault (optional; only with installed NRS 90224)

-pilot tone signal (optional; only with installed NRS 90224)

-measurement of the output voltage / level

-measurement of the output current

-surveillance of the connected loads via current/voltage measurement

MONITOR output; electronically balanced

monitoring: input/output signals can be assigned to the monitor bus

input transformer for floating, balanced input (optional)

output transformer for floating, balanced monitor output (optional)

pilot tone signal ON/OFF (optional)

The remote module allows to remotely control and monitor the operation of the power amplifiers DPA 4120 and DPA 4140 from the PROMATRIX manager DPM 4000 (for further details please refer to the PROMATRIX handbook).

Caution: Before installing the input module NRS 90222, you have to unplug the mains connector as well as a presumably connected battery cord.

Before installing the input module, it is necessary to remove the two locking screws B on the rear panel of the appliance. For installation the printed board assembly first has to be inserted into the guiding rails. After carefully pushing the module in it has to be locked by using the two screws mentioned before.

Note After installing the remote module NRS 90222 it is necessary to set its address according to the description in the PROMATRIX handbook using the two"HEX-codeswitches" ADDRESS (21) and note the setting within the field ADDRESS on the rear panel of the appliance using a waterproof marker pen.

8.3NRS 90208 input transformer for the floating, balanced input

For the case that floating inputs are required, the inputs of the INPUT MODULE NRS 90225 and the REMOTE MODULE NRS 90222 are prepared for retrofitting input transformers. If so, it is necessary to additionally install the extension kit NRS 90208 per each input.

The installation has to be performed as follows (see figure 6 and/or figure 7):

-to remove the input module you have to loosen the two locking screws (B) on the rear panel of the appliance. Now, the module can be easily torn out.

-before installing the input transformer you have to remove the resistors R1 and R2.

-mount the input transformer onto the printed board assembly, so that the marking located on the connector side of the transformer matches with the one on the printed board assembly. To prevent short-circuitsplace the supplied insulation disc between the transformer and the printed board assembly.

33

- re-insertthe input module and tighten the locking screws (B).

8.4NRS 90227 output transformer for the floating, balanced monitor output

In case that floating monitor outputs are required, the outputs of the INPUT MODULE NRS 90225 and REMOTE MODULE NRS 90222 are prepared for retrofitting output transformers. If so, it is necessary to additionally install the extension kit NRS 90227 per each output.

The installation has to be performed as follows (see figure 6 and/or figure 7):

-to remove the input module you have to loosen the two locking screws (B) on the rear panel of the appliance. Now, the module can be easily torn out.

-before installing the output transformer you have to remove the resistors R22, R23, R32 and R33 (NRS 90225) respectively the resistors R23, R24, R71 and R72 (NRS 90222).

-now, you can mount the output transformer onto the printed board assembly. Because of the transformer's symmetrical design, polarity is not a critical factor.

-re-insertthe input module and tighten the locking screws (B).

Input Transformer NRS 90208

34

Output Transformer NRS 90227

figure 6 printed board assembly 81338 showing the input transformer NRS 90208 and the output transformer NRS 90 227

Input Transformer NRS 90208

Output Transformer 90 227

figure 7 printed board assembly 81339 showing the input transformer NRS 90208 and the output transformer NRS 90 227

8.5NRS 90224 pilot tone & ground fault surveillance

The extension NRS 90224 is meant for insertion. It includes a 19 kHz tone generator and a selective 19 kHz receiver with evaluation stage for pilot tone surveillance. Also incorporated is a monitoring circuit with fault storage and display driver, to guard the cable network connected to the output.

8.5.1 Pilot tone surveillance:

Integration of the extension NRS 90224 provides continuous self-monitoringof the amplifier. This gets accomplished in the way that an extremelylow-level19 kHz pilot tone signal is introduced to the signal path following the input level control LEVEL. After passing the amplifier stages, the pilot tone signal is filtered out at the output and the result is evaluated. If the measured signal declines the pilot tone's predetermined threshold at the output or is not present at all, the READY indicator (7) dims and the READY fault message relay drops. When using the INPUT MODULE NRS 90225, the fault message is output as collective fault message with the floating contact of the READY fault message relay via the REMOTE CONTROL connector (16). When using the REMOTE MODULE NRS 90222, error occurrence is monitored and output by the PROMATRIX manager DPM 4000 (for further details, please refer to the PROMATRIX handbook).

8.5.2 Ground fault surveillance:

When installing and operating 100V-loudspeakernetworks, compliance to the VDE regulation DIN VDE 0800 is mandatory. Especially, if100V-loudspeakernetworks are included in alarm system applications, all security standards have to be in accordance to the security class 3 standard.

35

When off-groundpotential loudspeaker cable networks are employed we recommendinsulation-monitoringusing the ground fault surveillance module NRS 90224. Error recognition: An occurring ground fault either signals that one of the cables is damaged - which most likely point towards a total line interruption in the near future - or that connections have been carried out erroneously which may lead to malfunctioning of the entire system. The fault message GROUND FAULT (6) is also maintained with very short (>5 sec) ground faults, as long as the amplifier ispowered-onor a loaded battery is connected. The fault message is displayed via the red GROUND FAULT indicator (6). In case of an inserted INPUT MODULE NRS 90225, it is also outputted as collective fault message with the floating contact of the READY fault message relay via the REMOTE CONTROL connector (16). When using the REMOTE MODULE NRS 90222, error occurrence is monitored and output by the PROMATRIX manager DPM 4000 (for further details, please refer to the PROMATRIX handbook).

The installation has to be performed as follows (see figure 8 and/or figure 9):

Caution Before opening the appliance, make sure to disconnect the mains and/or battery power source!

-To open the appliance, the top panel has to be removed.

-The extension kit NRS 90224 has to be inserted with its component side to the left (from the front view) until it clicks in place.

-Re-installthe top plate of the enclosure.

NRS 90 224

S 406

36

S 405

 

 

 

B 411

figure 8 printed board assembly 84187 in the DPA 4120 showing the NRS 90224 pilot tone & ground fault surveillance and the bridges B411 and S405, S406 for switching the output voltage; inserted

37

NRS 90 224

S 406

S 405

B 411

figure 9 printed board assembly 84175 in the DPA 4140 showing the NRS 90224 pilot tone & ground fault surveillance and the bridges B411 and S405, S406 for switching the output voltage; inserted

Checking the pilot tone surveillance function:

When the NRS 90224 is installed and the power amplifier is switched on, the green READY indicator (7) has to light. The testing and reset button TEST (3) serves as a function control for the pilot tone surveillance. With the TEST button being engaged, the 19 kHz generator is inactive. The green READY indicator is off and the READY fault message relay drops. Approximately 3 seconds after releasing the TEST button, the indicator has to light again. This method can also be used to check system configurations with average-switching.

38

Checking the ground fault surveillance function:

When the NRS 90224 is installed and the power amplifier is switched on, the green READY indicator (7) has to light. Utilizing an external switch to connect one pole of the 100V-loudspeakernetwork via a 47 k ohms resistor for approximately 5 seconds to ground potential, the corresponding red GROUND FAULT indicator (6) has to light and the READY fault message relay of the INPUT MODULE NRS 90225 drops while the green READY indicator (7) stays lit. After releasing the button, the indication and the fault message are maintained. The TEST button (3) has to be used to reset the ground fault surveillance function. For further details on checking the function with the REMOTE MODULE NRS 90222 being included in your installation, please refer to the PROMATRIX handbook.

9.19"-caseand19“-rack-shelfsystem installation

Note

Operation of the power amplifiers DPA 4120 and DPA 4140 with enclosure cover plates detached is

 

strictly prohibited.

 

 

When mounting the power amplifiers within rack-casesorrack-shelfsystems make sure to provide sufficient airflow. The space between the rear panel of the amplifier and the inner wall of therack-casehas to be at least 60 mm x 330 mm. A free space of at least 100 mm above therack-shelfsystem is needed to provide sufficient air circulation. Since it is possible that during operation the temperature inside the rack system increases by 10° C, the maximum allowable ambient temperatures of the rest of the incorporated modules and appliances within a specificrack-shelforrack-casehave to be taken into careful consideration.

Note

To ensure trouble-freeoperation of the appliance, the maximum permissible ambient temperature of

 

+40°C is not to be exceeded.

 

 

10.Ground lift switch CIRCUIT TO CHASSIS SWITCH

The ground lift switch CIRCUIT TO CHASSIS SWITCH (19) provides the possibility to separate the signal ground from the enclosure (ground potential). This is mainly meant to eliminate noise-problemswhich are introduced throughground-loops,without jeopardizing the security. In case several appliances within a singlerack-caseorrack-shelfare furnished with ground lift switches, it is recommended to set all devices but one to "ungrounded“. Set one appliance to "grounded". When set to "ungrounded", the impedance between signal ground and enclosure is : 100 k ohms // 100 nF. It is needed to maintain EMV protection.

11.Fuses

11.1 Fuses in the DPA 4120

location

Pos.

purpose

value

dimensions

standard

fuse socket (11)

F601

mains fuse 230V~ AC

T2A

5x20 mm

IEC 127-2-3

fuse socket (11)

F601

mains fuse 115V~ AC

T4A

5x20 mm

IEC 127-2-3

printed board assembly

F602

mains fuse 100V - 250V

T1A

Ø 8.5xRM 5.08mm

IEC 127-3/4

86243

 

 

 

 

 

printed board assembly

F502

battery fuse 24V DC

15A

flat fuse

DIN 72581-3

85270

 

 

 

 

 

printed board assembly

F503

battery fuse 24V DC

15A

flat fuse

DIN 72581-3

85270

 

 

 

 

 

11.2 Fuses in the DPA 4140

 

 

 

 

location

Pos.

purpose

value

dimensions

standard

fuse socket (11)

F601

mains fuse 230V~ AC

T4A

5x20 mm

IEC 127-2-3

fuse socket (11)

F601

mains fuse 115V~ AC

T8A

5x20 mm

IEC 127-2-3

printed board assembly

F602

mains fuse 100V - 250V

T1A

Ø 8.5xRM 5.08mm

IEC 127-3/4

86243

 

 

 

 

 

printed board assembly

F502

battery fuse 24V DC

25A

flat fuse

DIN 72581-3

85268

 

 

 

 

 

printed board assembly

F503

battery fuse 24V DC

25A

flat fuse

DIN 72581-3

85268

 

 

 

 

 

39

F 503

F 502

figure 10 printed board assembly 85270 in the DPA 4120 showing the DC fuses F502 and F503

40

F 503 F 502

figure 11 printed board assembly 85268 in the DPA 4140 showing the DC fuses F502 and F503

41

F 601

F 602

figure 12 printed board assemblies 86243 DPA 4120 and DPA 4140 showing the AC fuses F601 and F602

Caution Before opening the appliance, make sure to disconnect the mains and/or battery power source!

Replacing the fuses F502 and F503 (only to be carried out by the experienced service technician!)

The battery fuses F502 and F503 are located on the power supply PCBs 85270 (DPA 4120) and 85268 (DPA 4140) behind the AMP battery connectors (see also figure 10 and/or figure 11). To replace these fuses you have to remove the cover plate of the appliance and afterwards the power supply input PCB 86243 which is mounted to the rear panel of the appliance. Therefore detach the yellow/green cable from the ground-connectoron the appliance's rear panel. Pressing thelock-strapof theAMP-connectortogether, it can be removed without applying any force. Now, you have to remove the three screws marked "A" (refer to the diagram of the appliance's rear panel on page 2) which allows you to twist the power supply input PCB 86243 up. Make sure not to damage any wires or any other parts. The fuses F502 and F503 are now accessible and can be removed. Tore-installthe power supply input PCB 86243, these steps have to be proceeded in the opposite order. The yellow/green cable has to be reconnected to theground-connectoron the rear panel of the appliance. By pulling the cable make sure that it sits snugly. Then you canre-attachthe cover plate of the enclosure.

42

Caution For security reasons it is necessary to ensure that, after the installation is completed, all wiring located beneath the power supply input PCB are within a distance of at least 6 mm to the printed board assembly.

12.Specifications

12.1DPA 4120 power amplifier 200 W

power supply:

 

 

 

 

 

 

 

mains operation

 

 

 

115 V / 230 V~ AC, ±10 %

 

mains frequency

 

 

 

50 - 60 Hz

 

 

security class

 

 

 

I

 

 

 

 

 

 

 

 

 

 

 

mains operation

 

Umains/ V

Imains/ A

Pmains/ VA

Pmains/ W

Pout / W

Pv / W

idling

 

230

0.13

30

16

0

16

normal operation

(-10dB)

230

0.83

191

138

20

118

alarm (-3dB)

 

230

1.67

384

298

100

198

standard conditions

230

2.27

522

415

200

215

initial current inrush (mains)

 

< 29 A

 

 

 

 

 

 

 

 

 

 

 

 

mains operation

 

Umains/ V

Imains/ A

Pmains/ VA

Pmains/ W

Pout / W

Pv / W

idling

 

115

0.26

30

16

0

16

normal operation

(-10dB)

115

1.67

191

138

20

118

alarm (-3dB)

 

115

3.34

384

298

100

198

standard conditions

115

4.54

522

415

200

215

initial current inrush (mains)

 

< 20 A

 

 

 

 

Pmains/ VA = apparent power Umains*Imains; Pmains / W = true power;

Pout / W = output power; Pv / W =leakage power

battery operation

 

 

 

 

24 V DC,

-10/+30%

 

 

 

 

 

 

 

 

 

battery operation

UB / V

 

IB / A

 

Pi / W

Pout / W

Pv / W

stand-by

24

 

2.5m

 

60m

0

60m

idling

24

 

0.43

 

10

0

10

normal operation (-10dB)

24

 

3.74

 

90

20

90

standard conditions

24

 

9.10

 

218

131

87

initial current inrush (battery)

 

 

< 3.8 A

 

 

 

Pi / W = input power UB*IB; Pout / W = output power;

Pv / W = leakage power

 

 

features of the input: nominal input level nominal input impedance

features of the power output:

nominal output capacity during mains operation nominal load impedance

frequency response

distortion at 1 kHz and nominal output power interfering voltage (A)

features of the monitor output: nominal output voltage

nominal load impedance

electronically balanced 775 mV = 0 dBu

³ 10 k ohms balanced, floating

200 W (according to IEC 268-3)

50 ohms / 100V; 25 ohms / 70 V; 12.5 ohms / 50 V or 4 ohms / 28 V

60 Hz .. 20 kHz

£1 %

£1.2 mV = -56dBu electronically balanced 2 V = + 8.2 dBu

600 ohms

43

ambient temperature range

+5 °C .. +40 °C

dimensions (W x H x D)

483 x 132 x 345 mm

depth with / without connections

max. 400 mm / max. 340 mm

weight without extensions

13.2 kg

finish

anthracite

12.2 DPA 4140 power amplifier 400 W

 

 

 

 

 

power supply:

 

 

 

115 V / 230 V~ AC, ±10 %

 

mains operation

 

 

 

 

mains frequency

 

 

 

50 - 60 Hz

 

 

security class

 

 

 

I

 

 

 

 

 

 

 

 

 

 

 

mains operation

 

Umains/ V

Imains/ A

Pmains/ VA

Pmains/ W

Pout / W

Pv / W

idling

 

230

0.19

44

23

0

23

normal operation

(-10dB)

230

1.60

368

263

40

223

alarm (-3dB)

 

230

3.10

713

562

200

362

standard conditions

230

4.43

1019

811

400

411

initial current inrush (mains)

 

< 36 A

 

 

 

 

 

 

 

 

 

 

 

 

mains operation

 

Umains/ V

Imains/ A

Pmains/ VA

Pmains/ W

Pout / W

Pv / W

idling

 

115

0.38

44

23

0

23

normal operation

(-10dB)

115

3.19

368

263

40

223

alarm (-3dB)

 

115

6.20

713

562

200

362

standard conditions

115

8.86

1019

811

400

411

initial current inrush (mains)

 

< 21 A

 

 

 

 

Pmains/ VA = apparent power Umains*Imains; Pmains / W = true power;

Pout / W = output power; Pv / W =leakage power

battery operation

 

 

 

 

24 V DC,

-10/+30%

 

 

 

 

 

 

 

 

 

battery operation

UB / V

 

IB / A

 

Pi / W

Pout / W

Pv / W

stand-by

24

 

2.5m

 

60m

0

60m

idling

24

 

0.62

 

15

0

15

normal operation (-10dB)

24

 

7.1

 

170

40

130

standard conditions

24

 

17.3

 

415

249

166

initial current inrush (battery)

 

 

< 3.8 A

 

 

 

Pi / W = input power UB*IB; Pout / W = output power;

Pv / W = leakage power

 

 

features of the input: nominal input level nominal input impedance

features of the power output:

nominal output capacity during mains operation nominal load impedance

frequency response

distortion at 1 kHz and nominal output power

electronically balanced 775 mV = 0 dBu

³ 10 k ohms balanced, floating

400 W (according to IEC 268-3)

25 ohms / 100V; 12.5 ohms / 70 V; 6.25 ohms / 50 V or 4 ohms / 40 V

60 Hz .. 20 kHz £ 1 %

44

interfering voltage (A)

£ 1.2 mV = -56dBu

features of the monitor output:

electronically balanced

nominal output voltage

2 V = + 8.2 dBu

nominal load impedance

600 ohms

ambient temperature range

+5 °C .. +40 °C

dimensions (W x H x D)

483 x 132 x 345 mm

depth with / without connections

max. 400 mm / 340 mm

weight without extensions

16.7 kg

finish

anthracite

extension kits for the DPA 4120 and DPA 4140:

 

 

NRS 90208 input transformer for floating, balanced input

Art. No.

121 641

NRS 90222 remote module

Art. No.

121 674

NRS 90224 pilot tone & ground fault surveillance

Art. No.

121 676

NRS 90225 standard input module

Art. No.

121 677

NRS 90227 output transformer for floating, balanced monitor output

Art. No.

121 679

13.Extension kit specifications for the power amplifiers DPA 4120 / DPA 4140

13.1NRS 90225 standard input module see specifications DPA 4120 / DPA 4140

13.2NRS 90222 remote module

see specifications DPA 4120 / DPA 4140

13.3NRS 90208 input transformer for floating, balanced input

frequency response

20 Hz .. 20 kHz

input impedance

³ 10 k ohms

idling ratio

1:1

winding resistance; primary

1420 ohms at 20°C

winding resistance; secondary

1420 ohms at 20°C

13.4NRS 90227 output transformer for floating, balanced monitor output

frequency response

40 Hz .. 20 kHz

nominal load impedance

³ 600 ohms

idling ration

1:1

winding resistance; primary

18 ohms at 20°C

winding resistance; secondary

18 ohms at 20°C

13.5NRS 90224 pilot tone & ground fault surveillance

13.5.1 pilot tone surveillance

 

pilot tone frequency

19 kHz ± 1%

error recognition threshold

£ 12 mV

fault message output via NRS 90225

collective fault message via READY relay

fault message output via NRS 90222

PROMATRIX manager DPM 4000

13.5.2

ground fault surveillance

 

input

loudspeaker line 4 ohms / 50V / 70V / 100V

 

fault message output via NRS 90225

collective fault message via READY relay

fault message output via NRS 90222

PROMATRIX Manager DPM 4000

disruptive strength

1000 Veff

error recognition threshold

£ 50 k ohms

45