Dynacord 4411 User Manual

POWER AMPLIFIER DPA 4411

Features

OWNER’S MANUAL

Power amplifier with 4x100 W output power capacity according to IEC 283-3 19" - rack size (3 HU) unit that provides the following functions:

• Mains operation 115/230 V AC and operation with emergency power supply of 24 V DC

• Output transformers for balanced, floating 100 V loudspeaker networks: 70 V, 50 V or

4 ohms for low-impedance operation can be selected

• All outputs are protected against idling and short-circuit

• Integrated Remote Module for control and monitoring using the PROMATRIX Manager DPM 4000

• Electronic level controls, electronically balanced inputs and electronically balanced MONITOR output

• Input transformer for balanced, floating inputs can be retrofitted

• Monitor output transformer for balanced, floating MONITOR output can be retrofitted

• Routing switch for parallel operation of the amplifier’s inputs

• Integrated Standby Power Supply

• Mains function switch - POWER

• Ground lift switch

• Remote-Start function for mains and battery operation with inrush current limiter protection

• Power-on noise attenuation

• Status-LED indicators: operation (READY), STANDBY, thermal overload (PROTECT)

and GROUND FAULT at the power outputs

• Fault notification according to DIN EN 60849 via the PROMATRIX Manager DPM 4000

• TEST-switch for systems with average-switching or GROUND FAULT RESET

• LED meters with a range from -13 dB to 0 dB plus CLIP indication

• Mains voltage selector switch 115/230 V AC

• Active, temperature-controlled ventilation

• Modules for pilot tone surveillance and ground fault surveillance according to DIN VDE 0800 are

optionally available

IMPORTANT SAFETY INSTRUCTIONS

The lightning flash with arrowhead symbol, within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintance (servicing) instructions in the literature accompanying the appliance.

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a damp cloth.

7. Do not block any of the ventilation openings. Install in accordance with the manufactures instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.

9. Only use attachments/accessories specified by the manufacturer.

10. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

For US and CANADA only:

Do not defeat the safety purpose of the grounding-type plug. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. When the provided plug does not fit into your outlet, consult an electrican for replacement of the absolete outlet.

IMPORTANT SERVICE INSTRUCTIONS

CAUTION: These servicing instructions are for use by qualified personnel only. To reduce the risk of

electric shock, do not perform any servicing other than that contained in the Operating Instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.

1. Security regulations as stated in the EN 60065 (VDE 0860 / IEC 65) and the CSA E65 - 94 have to be obeyed when servicing the appliance.

2. Use of a mains separator transformer is mandatory during maintenance while the appliance is opened, needs to be operated and is connected to the mains

3. Switch off the power before retrofitting any extensions, changing the mains voltage or the output voltage.

4. The minimum distance between parts carrying mains voltage and any accessible metal piece (metal enclosure), respectively between the mains poles has to be 3 mm and needs to be minded at all times. The minimum distance between parts carrying mains voltage and any switches or breakers that are not connected to the mains (secondary parts) has to be 6 mm and needs to be minded at all times.

5. Replacing special components that are marked in the circuit diagram using the security symb ol (Note) is only permissible when using original parts.

6. Altering the circuitry without prior consent or advice is not legitimate.

7. Any work security regulations that are applicable at the location where the appliance is being serviced have to be strictly obeyed. This applies also to any regulations about the work place itself.

8. All instructions concerning the handling of MOS - circuits have to be observed.

Note:

SAFETY COMPONENT (HAS TO BE REPLACED WITH ORIGINAL PART ONLY)

Indicators, Controls And Connections

1 LED meters with a range from -13 dB to 0 dB 2 CLIP indicators 3 TEST button for checking and reset function 4 STANDBY indicator 5 PROTECT indicator 6 GROUND FAULT indicator 7 READY indicator 8 Air inlets 9 POWER ON switch 10 AC MAINS INPUT connector 11 Mains fuse 12 VOLTAGE SELECTOR switch 13 REMOTE CONTROL connectors 14 STATUS indicator 15 INPUT connectors 1-4 16 ROUTING switch for INPUT 1-4 17 Device address label field 18 ADDRESS selector switch 19 POWER OUTPUT 20 Device output configuration label field 21 Air outlets

22 CIRCUIT ⊥ TO CHASSIS SWITCH 23 DC INPUT 24 V =

A Rear plate screws: 6 oval-head sheet-metal screws 3.5 x 6.5 zinc-coated DIN 7981 B heat-sink-mounting: 4 oval-head sheet-metal screws 3.5 x 9.5 zinc-coated DIN 7981 C PCB-mounting: 9 oval-head screws M3 x 12 nickel-plated DIN 7985 D socket-mounting: 8 oval-head screws PT-KA 30 x 8 WN-1412EJOT black, zinc-coated

Table of Contents

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Indicators, Controls And Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

1. Utilization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2. Installation Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3. Before Initial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.1 Mains Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.2 Battery Operation 24 V DC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4. Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5. Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.1 POWER OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.2 POWER OUTPUT for the connection of 100 V loudspeaker systems . . . . . . 25

5.3 POWER OUTPUT for the connection of low-impedance loudspeaker systems 25

5.4 POWER OUTPUT 100 V - Double Output Power . . . . . . . . . . . . . . . . . . . . . . 26

5.5 MONITOR Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6. Integrated Remote Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7. Indicators And Fault Notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

7.1 STANDBY Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

7.2 READY Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

7.3 PROTECT Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

7.4 GROUND FAULT Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7.5 Meter Instruments And CLIP Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7.6 STATUS Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

8. Switching The Output Voltage (refer to qualified service personnel only!) . . . . . . . 28

9. Additional Functions And Features (refer to qualified service personnel only!) . . 29

9.1 NRS 90206 Pilot Tone Surveillance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

9.2 NRS 90207 Ground Fault Surveillance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

9.3 NRS 90208 Input Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

9.4 NRS 90227 Monitor Output Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

10. 19"-Flightcase Or 19"-Rack System Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 32

11. Ground Lift Switch CIRCUIT ⊥ TO CHASSIS SWITCH . . . . . . . . . . . . . . . . . . . . 33

12. Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

13. DPA 4411 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

14. Specifications For DPA 4411 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

14.1 NRS 90206 Pilot Tone Surveillance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

14.2 NRS 90207 Ground Fault Surveillance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

14.3 NRS 90208 Input Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

14.4 NRS 90227 Monitor Output Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

15. Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

15.1 DPA 4411 Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

15.2 NRS 90206 Pilot Tone Surveillance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

15.3 NRS 90207 Ground Fault Surveillance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

1. Utilization

The amplifier DPA 4411 has been specially designed to ensure durable performance and reliable operation of sound reinforcement systems with several independent loudspeaker lines. The DPA 4411 is best suited for call and message transmission installations, alert systems, and for general music applications in industrial enterprises, offices, multi-function halls and sport arenas, schools, churches, hotels, hospitals, super markets, cruise ships, and similar applications.

2. Installation Notes

When installing or mounting the amplifier, it is important to make sure that unhindered air-flow from the air inlets on the front to the air outlets on the rear of the appliance is guaranteed (see paragraph 10). To maintain EMV disturbance-free operation, the use of shielded cable for all input, output and control lines, except for mains supply and battery cords, is mandatory. When installed inside of metal housings or rack systems, running unshielded output and control lines is possible. Cable screens have to be connected to the enclosure or rack system ground potential.

The amplifier has to be protected against:

- dropping or splashing water

- direct sunlight

- high environmental temperatures or direct radiation of heat sources

- high humidity and moisture

- dust

- shock or vibration

It is not permissible to place containers filled with liquids - e. g. vases - ontop of the appliance

When moving the amplifier from cold into warm environments, condensation of its inner parts can sometimes occur. If so, the appliance can be operated again after gaining the environmental temperature (approximately after one hour). If a solid object has fallen or liquid has leaked into the device, disconnect all connectors and get in contact with an authorized DYNACORD service center. Do not operate the amplifier after such accidents. When cleaning the amplifier’s outside enclosure, never use any cleaning sprays or detergents, because of inflamability. The use of those liquids will damage the appliance.

3. Before Initial Operation

3.1 Mains Operation

When operated on mains power, use the included mains cord to connect the amplifier to a 230 V or 115 V 50/60 Hz wall outlet. Connect the cable’s other end to the appliance’s 3-pole machine-type socket (10).

Caution The amplifier is factory-set to 230 V AC . To change the setting to 115 V AC, use the

voltage switch (12).

For the operation with 115 V AC , the mains fuse (11) has to be replaced by an 8 Ampère

slow-blow fuse with the label print “T8AL” (see also paragraph 12).

When correctly connected and with mains power present the green STANDBY indicator (4) will light. Now, through sending the corresponding command via the serial interface of the Remote Module, it is possible to start the amplifier from the PROMATRIX Manager DPM 4000 (see PROMATRIX handbook).

The POWER switch (9) on the rear of the amplifier – for bridging the starting relay – is meant for service purposes only. It offers the possibility to operate the amplifier without remote start.

Note The POWER switch (9) on the rear of the appliance is for service purposes only. Remote power-off is not possible with the POWER switch set to ON. In this case, the STANDBY

indicator (4) provides no function.

The DPA 4411 is equipped with a cut-in delay of approximately 3 seconds to efficiently suppress power-on noise. After this period of time and when no fault was detected, the green READY indicators (7) will light (see paragraph 7.2).

3.2 Battery Operation 24 V DC

The amplifier DPA 4411 can either be operated on the AC mains or connected to an external 24 V battery power source. Switching to battery operation is accomplished via internal relay. The battery has to be connected to the corresponding socket (23) on the rear panel of the appliance using insulated AMP flat connectors 6.3x0.8 mm. The amplifier is protected against confusion of poles. Additional internal protection is provided through two miniature fuses – F502 and F503 – one per each conductor (+ and -), which are located on the printed board assembly 85272 (see paragraph 12 , diagram

11). For the DPA 4411 the battery cable’s diameter should be at least 2.5 mm2 and the cable length for the single distance should not exceed 4.0 m (max. drop in voltage < 1V).

Caution Operation of the DPA 4411 is solely allowable using batteries without grounding or

batteries with grounding of the negative pole. Operation with batteries with grounding of

the positive pole is not permissible.

4. Inputs INPUT 1 to INPUT 4

The inputs INPUT 1 to INPUT 4 (15) are electronically balanced. With a sensitivity of 775mV = 0dBu they are meant for the connection of control amplifiers. For the case that floating inputs are needed, the inputs are prepared for retrofitting input transformers.

Note If a switch-contact is located between the control amplifier output and the power amplifier

input, switch clicks might become audible during switching. If this is the case, incorporating

input transformers (NRS 90208 - one per input) can solve the problem (see paragraph 9.3)

Parallel operation of INPUT 1 to INPUT 4 (15) is possible when using the ROUTING switches (16). This allows to connect the input signal through to feed several power amplifiers with the identical program. Use a permanent marker pen to mark the needed setting of the ROUTING switches (16) next to the ROUTING switch push-button symbol.

diagram 1 input socket connection

diagram 2 LF-cable for coupled operation of two DPA 4411

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