Principles of the Control System

PROPORZIONALE

Gradino di attivazione dello stadio di tem- peratura.

Differenziale dello stadio di temperatura. Gradino di attivazione dello stadio di umi- dità.

Differenziale dello stadio di umidità. Gradino di attivazione per lo stadio di sola deumidificazione in fase di raffreddamen- to.

Differenziale dello stadio di sola deumidi- ficazione in fase di raffreddamento. Gradino di attivazione per lo stadio di sola deumidificazione in fase di riscaldamento. Differenziale dello stadio di sola deumidi- ficazione in fase di riscaldamento. Attivazione ventilatore condensatore con compressore spento.

Disattivazione ventilatore condensatore con compressore spento.

xH.Prealarm Preallarme di alta temperatura.

xH.Alarm Allarme di alta temperatura.

xL.Alarm Allarme di bassa temperatura.

yH.Alarm Allarme di alta umidità.

yL.Alarm Allarme di bassa umidità.

zH.Alarm Allarme di alta pressione.

STADI ON/OFF xdz

Setpoint temperatura. Setpoint umidità.

x y z

SET POINT xK

Temperatura. Umidità. Pressione.

Il SISTEMA DI REGOLAZIONE

La logica di regolazione dell'MP2000 è la seguente:

- differenziale per gli stadi on/off con possibilità di imposta- re separatamente i valori di attivazione e disattivazione - proporzionale per i segnali 0⎟10V con possibilità di impostare separatamente i valori corrispondenti all’usci-

ta minima e massima del segnale.

SIMBOLOGIA UTILIZZATA NEI GRAFICI: GRANDEZZA

zOFF

zON

xDL

xdzL

xDH

yD xdzH

xD ydz

MP2000 AIR CONDITIONERS

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

xY0	Segnale proporzionale di temperatura.
zY1	Segnale proporzionale di pressione.
xPs	Start - Valore di temperatura corrispon-
	dente all'inizio del segnale.
xPe	End - Valore di temperatura corrispon-
	dente alla fine del segnale.
yPe	End - Valore di umidità corrispondente
	alla fine del segnale.
zPs	Start - Valore di pressione corrispondente
	al valore minimo del segnale.
zP	Bandaproporzionaledipressionecorrispon-
	dente al massimo valore del segnale (10V).
zPmin	Valore minimo del segnale di pressione
	corrispondente a "zPs". Il valore è impo-
	stabile da 0 a 5V.
zPmax	Valore massimo del segnale di pressione
	impostabile da 5 a 10V.
FLOATING (valvola a 3 punti)
xFs	Start - Valore di temperatura corrispon-
	dente all'inizio della banda di regolazione.
xFe	End - Valore di temperatura corrispon-
	dente alla fine della banda di regolazione.

Ad ogni simbolo segue un numero di identificazione.

PRINCIPLES OF THE CONTROL SYSTEM

The regulation logic of the MP2000 system the follow:

-differential type, for the ON/OFF stages, with possibility to set the activation and deactivation values separately.

-proportional type for 0⎟10V analog signals with possibil- ity to set the values separately in correspondence to the minimum and maximum signal.

SYMBOLS USED ON GRAPHS:

PARAMETERS

xTemperature.

yHumidity.

zPressure.

SET POINT

xK	Temperature setpoint.
yK	Humidity setpoint.
ON/OFF STAGES
xdz	Activation step of the temperature stage.
xD	Differential of the temperature stage.
ydz	Activation step of the humidity stage.
yD	Differential of the humidity stage.
xdzH	Activation step for the limit of the only
	dehumidification stage during cooling
	phase.
xDH	Differential for the only dehumidification
	stage during cooling phase.
xdzL	Activation step for the limit of the only
	dehumidification stage during heating
	phase.
xDL	Differential for the only dehumidification
	stage during heating phase.
zON	Condenser fan activation with compres-
	sor off.
zOFF	Condenser fan deactivation with compres-

	sor off.
xH.Prealarm High temperature prealarm.
xH.Alarm	High temperature alarm.
xL.Alarm	Low temperature alarm.
yH.Alarm	High humidity alarm.
yL.Alarm	Low humidity alarm.
zH.Alarm	High pressure alarm.
PROPORTIONAL
xY0	Temperature proportional signal.
zY1	Pressure proportional signal.
xPs	Start - Temperature value corresponding
	to the signal start.
xPe	End - Temperature value corresponding
	to the signal end.
yPe	End - Humidity value corresponding to the
	signal end.
zPs	Start - Pressure value corresponding to
	the signal start.
zP	Pressure proportional band correspond-
	ing to the maximum signal value (10V).
zPmin	Minimum pressure signal value corre-
	sponding to "zPs". The value is settable
	from 0 to 5V.
zPmax	Maximum pressure signal value. The value
	is settable from 5 to 10V.
FLOATING (Floating valve)
xFs	Start - Temperature value corresponding
	to the start of the control band.
xFe	End - Temperature value corresponding
	to the end of the control band.

An identification number follows each symbol.

RC GROUP - 149_ItEn.0102

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.

Dell MP2000 manual Principles of the Control System, Symbols Used on Graphs

Models: MP2000