24
ENG
"humiFog direct" +0300073EN rel. 1.4 - 29.03.2022
Menu
Index
Description
g. Supervision
Dg01
(visible for single-zone cabinet) Set the serial address, enable unit on/off and control from supervisor
Dg02
(visible for two-zone cabinet) Set the serial address, enable unit on/off and control from supervisor
Dg03
Select supervisor protocol
Dg04
BMS supervisor port confi guration: baud rate, stop bits, parity
Dg05
Ethernet supervisor port confi guration: DHCP, IP address, mask, gateway, DNS. Important - these values must be provided by the
local network administrator
Dg06
BACnet confi guration: address, maximum number of Mains, maximum number of frames
Dg07
Device instance parameter for BACnet confi guration
h. Logout
Exit the settings menu: request password on next access
Tab. 8.a
8.2 Control
8.2.1
Modulation of production
The system modulates the atomisation of water intermittently, in PWM
mode (pulse width modulation). Within a time period of 120 seconds
(settable value), the unit will deliver pressurised water to the blower
units for atomisation by the nozzles in the room:
•
for 120 seconds continuously, when there is maximum production
request;
•
for a fraction of time Ton less than 120 seconds (minimum 8% of the entire
period) and proportional to the request signal, if not at the maximum.
When atomisation stops, the pump remains active and the water is
recirculated through an internal bypass circuit in the pumping unit,
rather than being delivered to the blower units.
Fig. 8.r
The type of control is set on the following screen:
Index Description
Parameter
Da01
Da02
Type of
control
Set the type of control
Default: humidity (one probe)
Options: proportional to external signal, proportional
to external signal with limit probe, On/Off signal,
humidity (one probe), temperature (one probe),
humidity with limit, temperature with limit, humidity
(two probes), temperature (two probes)
Tab. 8.b
8.2.2
Proportional control to an external signal
(modulating operation)
Atomisation is proportional to the value of an external signal Y, (selectable
from the following options: 0 to 1 Vdc; 0 to 10 Vdc; 2 to 10 Vdc; 0 to 20
mA; 4 to 20 mA). The maximum production Pmax corresponds to the
maximum value of the external signal Y, and will be the humidifi er’s rated
production. The activation hysteresis hy is not settable by the user.
P
max
Steam_Pr
P
min
OFF
ON
0%
hy
2
xhy
100%
Y
Y=
0…1Vdc
0…10Vdc
2…10Vdc
0…20mA
4…20mA
Fig. 8.s
Key:
Water_pr
Pressurised water production Y
External signal
Pmax
Max production
hy
Activation hysteresis
Pmin
Min production
8.2.3
Autonomous control with humidity or
temperature probes
When using a main humidity control probe and an optional limit
humidity probe, atomisation is related to the % rH reading made by the
relative humidity probe and increases as the value read deviates from the
set point St. Maximum production Pmax corresponds to the case where
the humidity value, read by the probe, is BP away (proportional band)
from the set point. The activation hysteresis hy is not settable by the user.
P
max
Steam_Pr
P
min
OFF
ON
St
hy
BP
%rH
Fig. 8.t
Key:
Water_pr
Pressurised water production Y
Humidity measurement
Pmax
Max production
hy
Activation hysteresis
Pmin
Min production
St
Humidity Set point
When using a main temperature control probe and an optional limit
temperature probe, atomisation is related to the temperature reading in
°C or °F made by the probe and increases as the value read deviates from
the set point St. Maximum production Pmax corresponds to the case
where the temperature value, read by the probe, is BP away (proportional
band) from the set point. The activation hysteresis hy is not settable by
the user.
Fig. 8.u
Key:
Water_pr
Pressurised water production T
Temperature measurement
Pmax
Max production
hy
Activation hysteresis
Pmin
Min production
St
Temperature Set point
For “humidity (one probe)” or “temperature (one probe)” control, one
single main probe can be connected and confi gured, either wired or
wireless.
For “humidity with limit” or “temperature with limit” control, a wired probe
can be connected as the main probe and a wired probe as the limit. If using
wireless probes (maximum of four), two groups of probes can be defi ned:
the group of main probes and the group of limit probes. In this case, the
Summary of Contents for DLAQ2DF100
Page 1: ...NO POWER SIGNAL CABLES TOGETHER READ CAREFULLY IN THE TEXT humiFog direct User manual...
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Page 4: ...4 ENG humiFog direct 0300073EN rel 1 4 29 03 2022...
Page 42: ...42 ENG humiFog direct 0300073EN rel 1 4 29 03 2022 14 2 Two zone wiring diagram GA1 Fig 14 b...
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