Display Software Release; Accessing And Setting Parameters; Parameters: Recall Default Values; Reset Hour Counter From Display - Carel humiSonic Manual Del Usuario

•
from display (pressing Esc for 5 s), the display shows "t - -" alternating
with the main screen, for a master/slave network, this will disable all
of the humidifi ers in the network; to switch back ON, press ESC for 5 s
until t - - is no longer shown;
•
from supervisor (RS 485 Carel/Modbus) the display shows "S - -"
alternating with the main screen.
If there are multiple-disabling concurrently, they are alternated cyclically
on the main screen.
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If the display shows " ", it means a communication error between
display and humidifi er: control connection cable. If the problem persists,
call for service.
(*) To modify the parameter displayed press:
•
ENTER (display: );
•
UP or DOWN to set the value
•
ENTER to confi rm the new value.
Press ESC to return to the main screen. The parameters can also be
accessed from the list of parameters (see chap. "Confi guration parameter").

5.5 Display software release

1) on power-up the display shows "rel. x.y" (e.g. rel. 1.2);
2) during operation;
•
on the display: from the main screen press ESC and UP together, the
following are shown in sequence: humidifi er size, supply, number of
phases and software release;
•
via network on integer variable 81. Format "## = #.#" (e.g. 12 = release
1.2)"

5.6 Accessing and setting parameters

The confi guration parameters can be used to set and control humidifi er
functions and status. From the main screen press:
•
ENTER for 2 seconds;

6.1 Ultrasonic atomisation

Ultrasonic humidifi ers atomise water through propagation of a wave
generated by a piezoelectric element to the surface of the water. Droplets
of water thus form on the surface, with the smaller ones being carried
air by the forced air fl ow. The quantity of atomised water depends on
water level, water temperature and distribution in the air. Water level is
kept constant using fi ll and drain valves, and a level sensor. Demineralised
water is recommended: if using mains water, the scale that accumulates
over time will foul the piezoelectric transducer, aff ecting atomisation. To
avoid excessive scaling, humidifi er periodically drains and automatically
refi lls the water (periodical washing)

6.2 Control principles

The humidifi er can be controlled using the following signals:
•
remote ON/OFF;
•
External proportional signal (only with auxiliary cared);
•
Humidity probe;
•
Serial.
ON/OFF control
The action is all or nothing, activated by an external contact that
consequently determines the control set point and diff erential. The
external contact may be a humidistat, whose status determines the
operation of the humidifi er:
•
contact closed: the humidifi er produces atomized water if the remote
ON/OFF contact is also closed;
•
contact open: atomized water production ends.
Proportional control (only with auxiliary card)
•
Atomized water production is proportional to the value of a signal "Y"
from an external device. The type of signal can be selected between
the following standards: 0 to 10 Vdc, 2 to 10 Vdc, 0 to 20 mA, 4 to 20 mA;
•
Maximum humidifi er production, corresponding to the maximum
value of the external signal, can be set from Pn (default 10%) to 100%
of the rated value of the humidifi er (parameter P0).

6. OPERATING PRINCIPLES

15
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enter the password 77 using UP or DOWN;
•
ENTER to confi rm and access the list of parameters;
•
UP or DOWN to scroll the list;
•
ENTER to select a parameter (display: 'set');
•
UP to modify (increase) the value of the parameter. To scroll faster press
DOWN together;
•
DOWN to modify (decrease) the value of the parameter. To scroll faster
press UP together;
•
ENTER to save the new value and return to the list of parameters, or ESC
to return to the list without saving the value.
Press ESC to return to the main screen.

5.7 Parameters: Recall default values

The default values of the parameters can be recalled at any time from the
main screen. From the main screen press:
•
ENTER for 2 seconds;
•
enter the password 50 using UP or DOWN and press ENTER;
•
dFt appears, press ENTER and dFt is fl ashing: press ENTER again to have
up the factory settings, or ESC to exit.
If no button is pressed for 30 seconds, the display returns to the main
screen without recalling the default values.

5.8 Reset hour counter from display

Tank hour counter
•
Access parameter 'd3' (see chapt. "Confi guration parameter");
•
press UP and DOWN for 5 seconds.
When reset is complete, 'res' is shown on the display.
Internal piezoelectric transducer hour counter:
•
Access parameter 'd6' (see chap. "Confi guration parameters");
•
press UP & DOWN for 5 seconds
When reset is complete, 'res' is shown on the display (d6 returns to the
value fo AF = 9999 default).
Minimum production has an activation hysteresis, equal to the value of
P1 (default 2% of the proportional band of external signal "Y").
Produzione Acqua nebulizzata
Atomized water production
P0
P1 P1
Pn
OFF ON
Automatic control with humidity probe
Humidity production is controlled based on the reading of the relative
humidity probe (TH or connection via optional card).
The humidifi er will work at maximum capacity if the humidity measured is
less than the set point minus the proportional band, hile it will modulate
production inside the proportional band, parameter bP modifi able,
default 10%rH).
The minimum production has a fi xed activation hysterisis of 10% of the
the proportional band amplitude bP.
Direct version for room applic. +0300062IE - rel. 1.3 - 15.07.2019
ENG
Y
Fig. 6.a