MP2000 AIR CONDITIONERS

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

TERMOSTATO ELETTRONICO A MICROPROCESSO- RE A 1 STADIO - EWPC902/T

Questo termostato, normalmente posizionato nel quadro elettrico, è impiegato per la gestione di accessori partico- lari. Il regolatore visualizza costantemente la temperatura dell'aria o dell'acqua letta dalla sonda PTC 1000.

 

VISTA FRONTALE

 

FRONTAL VIEW

UP

°C

 

35

Out

 

DOWN

SET

MICROPROCESSOR CONTROLLED 1 STAGE ELEC- TRONIC THERMOSTAT - EWPC902/T

This thermostat, normally placed in the electric box, is used for particular optional management.

The controller continuously displays the water or air tem- perature read by the sensor PTC 1000.

VISTA POSTERIORE

BACK VIEW

 

 

 

 

 

24 Vac

 

 

1

2

3

4

5

6

7

8

9

75

60

Fig. 111

SET: Premendolo si ottiene la visualizzazione del set point.

Èpossibile variare il valore agendo sui tasti UP e DOWN entro 5 secondi. La memorizzazione del nuovo valore avviene automaticamente dopo 5 secondi dall'ultima azio- ne sui tasti del frontale.

UP: Pulsante per l'incremento dei valori. Utilizzato sia per la variazione del set point che per quella dei parametri. Tenendolo premuto si avrà un incremento veloce.

DOWN: Pulsante per il decremento dei valori. Utilizzato sia per la variazione del set point che per quella dei parametri. Tenendolo premuto si avrà un decremento veloce.

OUT: LED associato all'uscita. Lampeggia durante la vi- sualizzazione del set point e durante la programmazione dei parametri.

PROGRAMMAZIONE PARAMETRI

L'ingresso in programmazione si ottiene tenendo premuto il tasto SET per più di 4 secondi. Compare la prima label ed il LED OUT lampeggia. Per passare agli altri parametri premere UP o DOWN. Per visualizzare il valore del para- metro indicato dalla label premere SET. Per variarlo tenere premuto SET ed agire sui tasti UP o DOWN. Memorizzia- mone automatica non agendo sui pulsanti.

DESCRIZIONE PARAMETRI

d1 (Differential). Differenziale di intervento del Set point. Può essere settato a valori positivi (raffreddamen- to) o negativi (riscaldamento).

LS1 (Lower Set). Minimo Set point impostabile.

HS1 (Higher Set). Massimo Set point impostabile.

Od (Output delay). Tempo di ritardo attivazione relè. Usato per ritardare le uscite nel caso di ambienti di utilizzo molto disturbati a livello elettrico.

CAL (CALibration). Ricalibrazione dello strumento se il valore indicato è diverso da un valore campione noto.

HC1 (Heating/Cooling): Modo di funzionamento uscita. H = Caldo - C = Freddo

rP1 (Relè protection). Stabilisce la posizione del relè in caso di sonda guasta.

ro =relè aperto - rc =relè chiuso.

LF1 (LED Function). Indica se il LED deve essere acceso o spento in corrispondenza all'uscita attiva.

di =diretta = LED acceso per uscita attiva in =inversa = LED spento per uscita attiva

dP (decimal point). Permette di avere la visualizzazione

con o senza punto decimale.

oF =senza punto decimale - on = con punto decimale 176

SET: Push to display the set point value.

The set point can be changed whitin 5 seconds with the UP or DOWN buttons. The control will automatically switch back to normal operating mode within 5 seconds; the last entered setpoint will stay in memory.

UP: Used to increase the set point value, as well as the parameter when in programming. When held down for a few seconds, the change rate accelerates.

DOWN: Used to decrease the set point value, as well as the parameter when in programming. When held down for a few seconds, the change rate accelerates.

LED: Status light of the output. Blinks when in set point display/change mode or during programming.

PARAMETERS PROGRAMMING

Parameters programming by holding the SET button down for more than 4 seconds. The first parameter is displayed while the LED OUT blink. Other parameters are accessible with the UP and DOWN buttons. With the SET button, the actual setting of each parameter is displayed. To change a parameter set, push the SET plus the UP or DOWN. Automatic memorization without buttons pressing.

DESCRIPTION OF PARAMETERS

d1 (differential). Differential set point. The switching differential can be with positive value (cooling mode) or with negative value (heating mode).

LS1 (Lower Set). Lower set

HS1 (Higher Set). Higher set

Od (Output delay). This provide a delay selection for the outputs in application where noise may cause brief erroneous signal from the sensor to the controller.

CAL (CALibration). This allow instrument re-calibration if readings differs from a sure data.

HC1 (Heating/Cooling): Relay switch function H = Heating - C = Cooling

rP1 (Relay protection). Determines the status of the relay in case of sensor defect.

ro =relay open - rc =relay closed

LF1 (LED Function). Determines whether the status light is ON or OFF in relation to output.

di =direct= LED on when output is energized in =reverse= LED off when output is energized

dP (decimal point). Choose whether the resolution is required with or without decimal point.

oF =without decimal point - on = with decimal point RC GROUP - 149_ItEn.0102

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Dell MP2000 manual Programmazione Parametri, Descrizione Parametri, Parameters Programming, Description of Parameters

MP2000 specifications

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