MP2000 AIR CONDITIONERS

Sistema di controllo a microprocessore per condizionatori d'aria • Air conditioners microprocessor control system

RELE' DI PROTEZIONE MINIMA CORRENTE (MAX 10A) RC465/220 - RC465/48 - RC465/24

Il dispositivo è posizionato all'interno del quadro elettrico e trova la sua principale applicazione per rilevare l'assenza o la riduzione di corrente di un carico e segnalarlo tramite il relativo contatto del relè libero da tensione.

Il dispositivo è utilizzato anche per il controllo del flusso aria ad esclusione delle unità Roof Top.

 

1

2

3

 

RC465

 

 

 

PROTECTION

~

=

80

 

 

 

CURRENTMIN.

1

5A

 

 

 

4

5

6

 

 

25

 

Fig. 91

FUNZIONI

Il dispositivo è dotato di LED verde per segnalazione presen- za tensione e può controllare 1 carico elettrico (max 10A). Con la misura di corrente maggiore della soglia minima di intervento (normale funzionamento), il relè è eccitato con il contatto chiuso.

In caso di intervento si accende il LED rosso ed il relè si diseccita aprendo il contatto.

Ciò consente la segnalazione dall'allarme anche in caso di mancanza alimentazione o guasto del dispositivo.

Il valore di intervento è tarabile da 0,5 a 5A.

Per la segnalazione dell'allarme mancanza flusso aria il dispositivo controlla la corrente di alimentazione del moto- re del ventilatore (un dispositivo per ogni ventilatore).

Il dispositivo deve essere tarato al valore minimo di assor- bimento del motore elettrico per consentire l'intervento in caso di ostruzione della bocca da mandata aria, rottura o allentamento della cinghia di trasmissione oppure ostruzio- ne del flusso aria.

Il dispositivo non interviene nei seguenti casi:

- motore bloccato (tutti i motori): intervengono le protezio- ni termiche.

- mancanza fase (motori trifase): intervengono le protezio- ni termiche.

DATI TECNICI

 

Alimentazione

230Vac ± 20% - 50/60Hz - 1VA

RC465/220

RC465/48

48Vdc ± 20% - 50/60Hz - 1W

RC465/24

24Vdc -25/+40% - 50/60Hz - 0,5W

Potenza commutabile

5A - 250Vac - 1000VA

Max corrente

10 A

Soglia minima corrente

0,5 ⎟ 5A

Isteresi

5%

Isolamento

2,5kV (RMS)

RC GROUP - 149_ItEn.0102

MINIMUM CURRENT PROTECTION RELAY (MAX 10A) RC465/220 - RC465/48 - RC465/24

The device is placed in the electric box and it has been designed to senses the absence or a reduction of current from a load and indicate this status through the voltage free contact.

The device is also used for the air flow control (Roof Top units excluded).

75

FUNCTION

The device is equipped with a green LED to indicate voltage presence and can control one electric load (max 10A). With current higher than minimum intervention threshold (normal working conditions) the relay is energized and the relative contact is closed.

In case of intervention the relay is deenergized, with consequent contact opening, and the red LED lights. This working mode allows an alarm indication also in case of power loss or faulty device.

The minimum current threshold is settable from 0,5 to 5A.

For the air flow loss alarm signalling the device control the fan motor feeding current (one device for each fan).

The device must be set to the minimum absorption current value of the electric motor to allow the intervention in case of obstruction on the fan air discharge, breakage or loosen- ing of the belt or obstruction of the air flow.

The device don't intervenes in case of:

-motor blocked (all motors): intervention of the thermal protection

-phase lack (three-phase motor): intervention of the ther- mal protection.

TECHNICAL DATA

 

Feeding

230Vac ± 20% - 50/60Hz - 1VA

RC465/220

RC465/48

48Vdc ± 20% - 50/60Hz - 1W

RC465/24

24Vdc -25/+40% - 50/60Hz - 0,5W

Switching power

5A - 250Vac - 1000VA

Max current

10 A

Min current threshold

0,5 ⎟ 5A

Hysteresis

5%

Insulation

2kV (RMS)

 

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Page 156 Page 158
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Image 157
Dell MP2000 manual Il valore di intervento è tarabile da 0,5 a 5A
Page 156 Page 158

MP2000 specifications

The Dell MP2000 is a versatile multimedia projector designed to deliver impressive performance for both business and entertainment purposes. This projector offers a sleek design and robust features, making it an ideal choice for presentations, classroom environments, and home theater setups.

One of the standout features of the Dell MP2000 is its high brightness capability. With a brightness rating of about 3,000 ANSI lumens, it ensures clear and vivid projections even in well-lit environments. This brightness level makes it suitable for various settings, from large conference rooms to small classrooms, ensuring that the content is easily visible to all audiences.

In addition to its brightness, the MP2000 boasts a native resolution of XGA (1024x768 pixels), providing sharp and detailed images. The projector supports a range of resolutions up to UXGA (1600x1200), ensuring compatibility with various media formats. This versatility allows users to project high-quality videos, presentations, and images with excellent clarity.

The MP2000 employs DLP (Digital Light Processing) technology, which enhances image quality and color accuracy. DLP is known for its superior brightness and contrast characteristics, giving presentations a professional look. The projector’s color wheel ensures vibrant colors, making it perfect for showcasing graphics and videos.

Connectivity options on the Dell MP2000 are extensive, catering to various devices and media sources. It includes multiple input ports, such as VGA, HDMI, and USB, allowing easy connection to laptops, desktops, and other devices. The inclusion of an RS-232 port also enables integration into larger AV systems for more streamlined control.

Portability is another key characteristic of the MP2000. Weighing less than 5 pounds, it is easy to transport, making it a great option for traveling professionals or educators who need to move between locations. The projector also features an intuitive interface and remote control, facilitating user-friendly navigation through menus and settings.

For added convenience, the MP2000 supports rapid startup and shutdown processes, reducing waiting times between presentations. Its lamp life is impressive, lasting up to 5,000 hours in eco mode, which minimizes maintenance costs and ensures longevity.

In conclusion, the Dell MP2000 is a powerful and reliable projector that excels in brightness, image quality, and connectivity. Its DLP technology, portability, and user-friendly features make it a top choice for anyone looking to enhance their presentation or home viewing experience. Whether for educational purposes or business meetings, the MP2000 delivers outstanding performance and versatility.
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