MP2000 AIR CONDITIONERS

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

GLI STADI ON/OFF

La logica di regolazione a stadi on/off identifica una tipolo- gia di controllo che prevede l'impostazione di valori nume- rici di temperatura (°C), umidità (%UR) o pressione (kPa) per definire il set di attivazione del componente (stadio) ed il relativo campo di lavoro (differenziale) riferiti al setpoint impostato.

Esempio:

Impostando il set point a 22°C, con lo stadio di raffreddamen- to ad un valore di temperatura di 1°C (gradino di attivazione) e con differenziale di 0,7°C otterremo quanto segue:

- attivazione compressore quando l'aria ambiente rag- giunge i 23°C (22+1).

- disattivazione compressore quando l'aria ambiente rag- giunge i 22,3°C (23-0,7).

0,7°C

off

on

THE ON/OFF STAGES

The on/off stage regulation logic identifies a control typol- ogy which provides the setting of numeric values for tem- perature (°C), humidity (% R.H.) or pressure (kPa), permit- ting definition of the activation set of the component (stage) and the relative work field (differential) referred to the preset set point.

Example:

When setting the setpoint at 22°C, with the cooling stage at a temperature of 1°C (activation step) and a differential equal to 0.7°C, you will obtain the following:

-the compressor is activated when the air in the room reaches 23°C (22+1).

-the compressor is deactivated when the air in the room reaches 22.3°C (23-0.7).

222324 x (°C) xK

xD

xdz

Fig.37

I SEGNALI PROPORZIONALI DI TEMPERATURA

Segnale di tensione xY diretto (0⎟10V) o inverso (10⎟0V) proporzionale al valore di temperatura /umidità rilevato dalla sonda di ripresa aria.

PROPORTIONAL è definito dai set "proportional valve start" (inizio rampa) e "proportional valve max" (fine rampa) che sono valori numerici riferiti al setpoint impostato.

Esempio:

Raffreddamento con logica diretta (0⎟10V). "Proportional valve start" = 0,3°C - sommando tale valore al setpoint otterremo 22+0,3 = 22,3°C che corrisponde all'inizio rampa.

"Proportional valve max" = 1,5°C - sommando tale valore al setpoint otterremo 22+1,5 = 23,5°C che corrisponde alla fine rampa.

Il segnale proporzionale quindi sarà uguale a 0V con temperatura ambiente fino a 22,3°C per incrementarsi fino a 10V con temperatura ambiente di 23,5°C.

THE TEMPERATURE PROPORTIONAL SIGNALS

Direct (0⎟10V) or reverse (10⎟0V) xY voltage signal, pro- portional to the temperature/humidity value measured by the probe.

The PROPORTIONAL is defined by the "proportional valve start" (ramp start) and "proportional valve max" (ramp end) sets, that are numeric values referring to the preset setpoint. Example:

Direct logic cooling (0⎟10V) "Proportional valve start" = 0.3°C

-when adding this value to the set point you will obtain 22+0.3 = 22.3°C, in correspondence to the ramp start. "Proportional valve max" = 1.5°C

-when adding this value to the set point you will obtain 22+1.5 = 23.5°C, in correspondence to the ramp end.

Accordingly, the proportional signal is equal to 0V, with room temperature up to 22.3°C, but it will increase up to 10V with room temperature of 23.5°C.

(V) 10

 

 

 

 

 

 

 

 

 

 

 

 

0⎟10V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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0

 

 

 

 

 

 

xY0

 

 

 

 

 

 

10⎟0V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

22,3

 

 

 

 

 

 

23,5

x (°C)

22

 

 

23

 

24

 

 

xK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

xPs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

xPe

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 38

 

 

 

 

RC GROUP - 149_ItEn.0102

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Dell MP2000 manual GLI Stadi ON/OFF, ON/OFF Stages, Segnali Proporzionali DI Temperatura, Temperature Proportional Signals
Page 53 Page 55

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.

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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.

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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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