Dynacord DPA 4140 Checking the ground fault surveillance function, Fuses Fuses in the DPA

Page 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-loudspeaker network 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"-case and 19“-rack-shelf system 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-cases or rack-shelf systems make sure to provide sufficient airflow. The space between the rear panel of the amplifier and the inner wall of the rack-case has to be at least 60

mmx 330 mm. A free space of at least 100 mm above the rack-shelf system 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 specific rack-shelf or rack-case have to be taken into careful consideration.

Note

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

 

+40°C is not to be exceeded.

 

 

10.Ground lift switch CIRCUIT A TO CHASSIS SWITCH

The ground lift switch CIRCUIT A TO CHASSIS SWITCH (19) provides the possibility to separate the signal ground from the enclosure (ground potential). This is mainly meant to eliminate noise-problems which are introduced through ground-loops, without jeopardizing the security. In case several appliances within a single rack-case or rack-shelf are 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

 

 

 

 

 

38

Image 38
Contents Power Amplifier DPA 4120 / DPA Leistungsmerkmale+7,*6,&+5+,76+,1,6 Anzeigen, Bedienungselemente und Anschlüsse DPAInhaltsverzeichnis Der Verstärker ist zu schützen vor InstallationshinweiseVerwendung Vor der InbetriebnahmeBatteriebetrieb 24V DC Eingang InputAusgänge Leistungsausgang Power Output Kontrollausgang Monitor Leistungsausgang Power Output für niederohmige LautsprecherSteueranschluß Remote Control nur NRS Anzeigen STANDBY-AnzeigeAussteuerungskontrolle und CLIP-Anzeige Ground Fault AnzeigeProtect Anzeige Remote Modul NRS Der Einbau ist wie folgt vorzunehmen siehe Bild 6 bzw. Bild Input Transformer NRS Output Transformer NRS Erdschluß-Überwachung Pilotton & Erdschluß Überwachung NRSPilotton-Überwachung Der Einbau ist wie folgt vorzunehmen siehe Bild 8 bzw. BildNRS 90 406 S 411 Prüfung der Funktion Pilotton-Überwachung Einbau in 19-Gehäuse oder 19-Gestellschränke Groundlift Schalter Circuit a to Chassis SwitchPrüfung der Funktion Erdschluß-Überwachung Sicherungen Sicherungen in DPA503 F Page Page Eigenschaften des Leistungs-Ausgangs BatteriebetriebEigenschaften des Eingangs Eigenschaften des Monitor-AusgangsNachrüstsätze für DPA 4120 und DPA Erdschluß Überwachung Performance Features 03257$176$7,16758&7,216 Indicators, controls and connections 12 aContents Amplifier has to be protected from InstallationUtilization Before the first operationBattery operation 24V DC InputOutputs Power Output for 100V 70V or 50V loudspeaker systemsPower Output for low impedance loudspeaker systems Single Call and obligatory reception relays Override BypassReady indicator Remote Control connector only NRSIndicators Standby indicator Protect indicatorLevel meter and Clip indicator Enhanced application field Standard input module NRS Remote module NRSNRS 90208 input transformer for the floating, balanced input Input Transformer NRS Output Transformer NRS Pilot tone surveillance NRS 90224 pilot tone & ground fault surveillanceGround fault surveillance NRS 90 406 S 411 Checking the pilot tone surveillance function Ground lift switch Circuit a to Chassis Switch Checking the ground fault surveillance functionCase and 19-rack-shelf system installation Fuses Fuses in the DPA503 F 503 F 601 602 Battery operation Features of the input nominal input levelDPA 4140 power amplifier 400 W power supply Mains operation Extension kits for the DPA 4120 and DPANRS 90208 input transformer for floating, balanced input Amplificateur DE Puissance DPA 4120 / DPA Caractéristiques techniques16758&7,2166e&85,7e,03257$176 Témoins, contrôles et connexions NRS 90225 module dentrée général Avant la première utilisation UtilisationLamplificateur doit être protégé contre Fonctionnement sur le secteurFonctionnement sur batterie 24V DC Input EntréeCâblage LF pour le couplage de deux amplificateurs DPA SortiesTémoins Témoin Standby Connecteur Remote Control NRS 90225 uniquementSortie Monitor Témoin ReadyTémoin Ground Fault Vumètre et témoin ClipModule de télécommande NRS Champs dapplications avancées Module dentrée standard NRSPage Input Transformer NRS Output Transformer NRS Surveillance de la fréquence pilote Surveillance de défaut de masseNRS 90 406 S 411 NRS 90 406 S 411 Fusibles Fusibles du DPA Installation en rack 19 et en armoire rackCommutateur de mise à la masse Circuit a to Chassis Switch 503 F 503 F 601 602 Caractéristiques de la sortie de puissance Fonctionnement sur batterieCaractéristiques de lentrée Caractéristiques de la sortie MonitorKits dextension pour les DPA 4120 et DPA Surveillance du défaut de masse entrée ligne haut-parleur Page Blockdiagram Page Page Page Bosch Communications Systems
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DPA 4120, DPA 4140 specifications

The Dynacord DPA 4120 and DPA 4140 are powerful amplifier solutions designed for professional audio applications. These models are ideal for live sound reinforcement, permanent installations, and various audio distribution requirements.

Both DPA 4120 and DPA 4140 are part of the Dynacord DPA series, which is renowned for delivering high-quality sound and reliability in demanding environments. The DPA 4120 provides a robust 1200 watts of power per channel at 4 ohms, while the DPA 4140 ups the ante with an impressive 1400 watts per channel at the same impedance, making them suitable for driving a wide range of speaker systems.

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Both models are equipped with a range of connectivity options, including XLR inputs and Speakon outputs, facilitating seamless integration with various audio systems. The amplifiers support both analog and digital input sources, ensuring compatibility with modern audio setups.

In terms of sound quality, the DPA 4120 and DPA 4140 are engineered with low distortion levels and high efficiency, achieving high-performance audio output while maintaining clarity and detail across all frequencies. The amplifiers also feature a robust power supply that delivers consistent performance, even during peak use scenarios.

User-friendly controls and monitoring options are also inherent in the design of these amplifiers. An intuitive front panel interface allows for easy adjustment of settings, while LED indicators provide real-time feedback on performance and operational status.

In summary, the Dynacord DPA 4120 and DPA 4140 offer exceptional power, sound quality, and advanced features, making them excellent choices for audio professionals seeking reliable and powerful amplification solutions. Their combination of performance, durability, and versatility serves to meet the needs of various professional audio applications, solidifying their place in the competitive landscape of audio amplifiers.