Before explore into the description and functions of the various subsystems, it is appropriate to introduce a general concept that applies to the entire REG System, that of the input multiplexer.
Most of the subsystems require the acquisition of temperatures from the system; for example:
The Zone subsystem must read the room temperature in order to decide when to heat/cool the zone.
The Circuit subsystem must read the flow temperature of a circuit in order to properly manage the mixing valve.
The DHW subsystem must read the domestic tank temperature in order to regulate its temperature.
The Global Settings subsystem must read the Outdoor Temperature and the information will then be shared with other subsystems to implement other logics (i.e., circuits climatic regulation, or logics for choosing which sources to activate).
Other systems may request the status of a dry contact; for example:
The Circuit subsystem can read the status of a dry contact indicating pump blockage.
The Zone subsystem can read the status of a dry contact and only activate when the contact is closed
The need then arises to understand where to connect the temperature probe or the dry contact, to which terminals the signal should be physically connected.
The REG System is totally flexible from this point of view, and allows the signal to be connected to whatever input of the boards constituting the system.
ANALOG INPUT SELECTOR
Note
The following examples and images are taken from the RegConfig software, but the same settings can also be made from the LCD display of the REG-DIN-8 board. At all points of the configuration where a temperature (and humidity) value should be (or must be) acquired, there is a drop-down menu which will be illustrated below.
The first, fundamental, distinction is between Passive and Active Probes:
Passive Probes
Each probes require a direct 2-wire connection between the probe and the board.
Each probe uses an analog input of the board REG-DIN-8 or of an expansion board; the total number of passive probes connected to a system is therefore limited by the number of available inputs;
Passive probes do not require addressing.
Active Probes
They use a 4-wire (+,-,A,B) connection from the board and connect the active probes in connection, with an “in-out” wiring.
The probes are connected to the BUS terminal of the board, they do not use analog input.
The active probes must be addressed, that is each one must be assigned an address that allows the board to communicate with the various active probes connected to the BUS.
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Understood the distinction between active and passive probes, it is easy to understand how to configure the parameters that allow you to set the probe for the various zones, systems and outdoor probes:
For Passive Probes you set the Board and the Channel of that board to which the probe is connected.
For Active Probes you set the BUS address assigned to the probe.
BOARD FIELD
The first part of the field allows you to select from which board to acquire the sensor value from. The drop-down menu lists all the boards that could potentially be present in a system:
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therefore from the board REG (REG-DIN-8) to the expansions EXP (REG-EXP-8), IOA and IOB (REG-IOA and REG-IOB).
For the REG-IOC select from IOB 92 to IOB 99 (see REG-IOC data sheet).
It is also possible to use the virtual analogue readings acquired from UGW via Modbus directly from the device being managed (for more information, see the REG-UGW-485 Manual).
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In addition to the boards, it possible to directly select the sensor managed via REG bus:
AQ – are the air quality sensor _REG-AQ-Sxx (phase-out) and REG-AQ40-Sxx (new ones)
T from 160 to 191 – are the temperature and humidity sensor for which only the temperature is to be detected _ REG-TH-Sxx or REG-THL-Sxx
TH from 192 to 223 – are the temperature and humidity sensor for which you want to detect both _ REG-TH-Sxx or REG-THL-Sxx
Special values can be selected as will be shown later.
Finally, it is possible to select a Constant and manually enter the desired value, if you want to perform simulations, for examples, and do not have all the sensor connected.
CHANNEL FIELD
If the REG-DIN-8 (REG), REG-EXP-8 (EXP x), REG-IOA, REG-IOB (IOA x / IOB x) or REG-UGW-485 (UGW x) boards have been selected, the Channel field allows you to specify which input, among those available on the selected board type, to use for the reading; the list that appears automatically adapts to the selected board, listing the available channels; for example, in the case of EXP board, 8 channels appear; if an IOA type board is selected, only two channels are displayed:
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If the REG-AQ-Sxx (AQ) bus sensor were selected, the channel field must be left at s/set as default, which means that the sensor has no display:
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For temperature and humidity sensor (from T160 to TH 223) you must select s/set if they are REG-TH-Sxx sensor, without display and therefore without the possibility of changing setpoint. If c/set is selected, this means that a REG-THL-Sxx sensor with display has been installed.
Do not use o/set
If SPECIAL is selected, various options are presented:
TEXT G2/G0 and TEXT G1 = takes the outside temperature value passed by the G0 or G2 and G1 generator (an Opentherm generator must be connected to use this)
TMAND G1 and TMAND G2/G0 = takes the water outlet temperature value passed by the G0 or G2 and G1 generator (an Opentherm generator must be connected to use this)
TRIT G1 e TRIT G2/G0 = takes the water inlet temperature value passed by the G0 or G2 and G1 generator (an Opentherm generator must be connected to use this)
DHW = this value is only displayed for the sensor on the DHW page and corresponds to the DHW temperature passed by the G0 generator (an Opentherm generator must be connected to use this and a DOT display with Opentherm on board must be used)
TDHW Gx = takes the DHW temperature value passed by the Gx generator (an Opentherm generator must be connected to use this)
HOST = TBD
100%rh = a value of 100% relative humidity is displayed
MATHx = takes the value of the result of the corresponding mathematical operation (see MATH FUNCTIONS)
?25 up to ?95 = TBD
SET Zx = takes the current zone setpoint as the temperature value
n/u = not used
Per quanto riguarda i sensori di temperatura e umidità (da T160 a TH 223) bisogna selezionare s/set se sono sensori REG-TH-Sxx, senza display e quindi senza possibilità di cambiare set point. Se si seleziona c/set significa che che si ha installato un sensore REG-THL-Sxx con display.
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CAMPO TIPO DI SENSORE
Il terzo campo permette di specifica le varie tipologie di sensore NTC che le schede del Sistema REG sono in grado di acquisire:
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D = Default, indica il riferimento per la scheda, per il sistema REG default = M
M = sonde NTC 12kOhm Beta 3977 (prodotti con queste caratteristiche STM/STB/STE/TP-Sxx)
A = sonde NTC 10kOhm Beta 3970 (prodotti con queste caratteristiche STA)
S = sonde NTC 10kOhm Beta 3435 (prodotti con queste caratteristiche sono OEM)
L = è una lettura lineare, cioè normalizza i valori letti dall’ingresso da 0 a 100 (si utilizza in casi particolari e su indicazione del produttore)
R = Valore Raw (grezzo) sono valori non rielaborati acquisiti in situazioni specifiche, se serve, come nel caso in cui si utilizzi il REG2VFS, è specificato nella scheda tecnica del prodotto
SELETTORE INGRESSO DIGITALE
CAMPO SCHEDA
La prima parte del campo permette di selezionare da quale scheda acquisire lo stato dell’ingresso digitale (0 o 1). La tendina elenca tutte le schede che possono potenzialmente essere presenti in un impianto:
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quindi dalla scheda REG (REG-DIN-8) alle espansioni EXP (REG-EXP-8), IOA e IOB (REG-IOA e REG-IOB).
Per i REG-IOC selezionare da IOB 92 a IOB 99 (vedere scheda tecnica del REG-IOC).
E' possibile utilizzare anche le letture digitali virtuali acquisite dagli UGW via Modbus direttamente dalla periferica che si sta gestendo (per maggiori informazioni vedere il REG-UGW-485_Manuale).
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In fondo alla tendina è possibile selezionare 3 opzioni particolari:
VDoutL = corrispondono agli stati delle uscite digitali disponibili nel Sistema REG dalla zero alla 127, per questo L che sta per Low cioè i valori più bassi (e i relativi negati). Vedere CONFIGURAZIONE DEGLI OUTPUT VIRTUALI
VDoutH = corrispondono agli stati delle uscite digitali disponibili nel Sistema REG dalla 128 alla 255, per questo H che sta per High cioè i valori più alti (e i relativi negati). Vedere CONFIGURAZIONE DEGLI OUTPUT VIRTUALI
AlarmDout = corrispondono agli stati degli allarmi disponibili nel Sistema REG
CAMPO CANALE
Se sono state selezionate le schede REG-DIN-8 (REG), REG-EXP-8 (EXP x), REG-IOA, REG-IOB (IOA x / IOB x) o REG-UGW-485 (UGW x) il campo Canale permette di specificare quale ingresso, tra quelli disponibili sul tipo di scheda selezionata, utilizzare per la lettura dello stato; l'elenco che compare si adatta automaticamente al tipo di scheda selezionata, elencando i canali disponibili; per esempio nel caso della scheda EXP compaiono 8 canali; se si seleziona una scheda di tipo IOB, vengono visualizzati solo due canali:
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Come si può notare dalle foto il contatto digitale può essere preso sia come normalmente aperto (IAx) che come normalmente chiuso (/IAx) per soddisfare le molteplici esigenze impiantistiche.
Nel caso si sia scelto VDout L o VDout H il campo canale si popolerà in base alla regolazione che è stata eseguita salvo le prime 13 uscite digitali:
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Nel caso si sia scelto AlarmDout il campo canale si popolerà con tutti gli allarmi disponibili all’interno della regolazione del Sistema REG:
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Ovviamente funzioneranno o meno in base alla programmazione del caso specifico.