Emerson dixell XH340L-V Installing And Operating Instructions

XH340L-V
TEMPERATURE AND HUMIDITY CONTROLLER
FOR SEASONING-MATURING CABINETS
1. GENERAL WARNING
1.1 PLEASE READ BEFORE USING THIS MANUAL
 This manual is part of the product and should be kept near the instrument for easy and quick
reference.

The instrument shall not be used for purposes different from those described hereunder. It cannot
be used as a safety device.

Check the application limits before proceeding.

Dixell Srl reserves the right to change the composition of its products, even without notice,
ensuring the same and unchanged functionality.
1.2 SAFETY PRECAUTIONS

Check the supply voltage is correct before connecting the instrument.
 Do not expose to water or moisture: use the controller only within the operating limits avoiding
sudden temperature changes with high atmospheric humidity to prevent
condensation
 Warning: disconnect all electrical connections before any kind of maintenance.

Fit the probe where it is not accessible by the End User. The instrument must not be opened.

In case of failure or faulty operation send the instrument back to the distributor or to "Dixell S.r.l."
(see address) with a detailed description of the fault.

Consider the maximum current which can be applied to each relay (see Technical Data).

Ensure that the wires for probes, loads and the power supply are separated and far enough from
each other, without crossing or intertwining.
 In case of applications in industrial environments, the use of mains filters (our mod. FT1) in
parallel with inductive loads could be useful.
2. GENERAL DESCRIPTION
The XH340L, 38x185 format and the XH340V, 100x64 format, are microprocessor controllers, suitable
for applications on medium or low temperature refrigerating units. They have 5 output relays to control
compressor, heating elements, , fan, de-humidifier/light/extractor fan and humidifier. They have 1 NTC
inputs one for thermostat. It's also present a 4÷20mA input for humidity. There is one digital input (free
contact) configurable by parameter. An output allows the user to programme the parameter list with the
"Hot Key".
3. TEMPERATURE REGULATION
The temperature regulation is performed through neutral zone using compressor and heater output
relays.
ON
OFF
• Heating output: CUT IN is "SET_T-dbt", CUT OUT is when the temperature reaches the set point.
• Compressor output CUT IN is " SET_T +dbt", CUT OUT is when the temperature reaches the set
point.
3.1 DEFROST
Defrost is made only by stopping compressor
The defrost interval is control by means of parameter "EdF": (EdF=in) the defrost is made every "IdF"
time, (EdF=Sd) the interval "IdF" is calculate through Smart Defrost algorithm (only when the
compressor is ON). To disable the defrost set the MdF parameter to zero
During defrost the temperature control is disabled.
To disable defrosts set MdF=0.
Humidity regulation during defrost depends on the Hud parameter.
With Hud=no humidity regulation is disabled.
Con Hud=yES humidity regulation is performed also during defrost.
4. HUMIDITY REGULATION
The humidity regulation is performed through neutral zone, by humidifying dehumidifying actions.
Humidity control can be disabled setting the SET_RH to "nu" value. In this case only the temperature
control is perform.
4.1 HUMIDIFYING ACTION
The humidifying action is done enabling the humidifier relay when the humidity is lower than the
"SET_RH-dbH" value.
The relay is switch off when humidity reaches the set values.
1592002800 XH340L-V GB r1.0 28.09.2015
formation of
Set point
4.2 DEHUMIDIFYING ACTION WITHOUT DEHUMIDIFIER RELAY, OA1 DIFFERENT FROM DEH
(XH340L TERMINALS 3-4, XH340V TERMINALS. 11-12)
In this case the dehumidifying action is performed by setting the following parameters in this way:
tHu = c-H kind of dehumidifying by means of heating and compressor relays
oA1 different from dEH (XH340L terminals 3-4, XH340V terminals. 11-12):
The heating and compressor outputs are activated together when humidity is higher than SET_RH+dbH
value. Outputs are disabled when humidity comes back to the SET_RH value.
4.2.1 Relation between cooling, heating and dehumidifying
1. If is simultaneously present a request of cooling (temp>SET_T+dbt) and dehumidifying (RH >
SET_RH+dbH): the cooling action has the priority over the dehumidifying action: only the
compressor relay is energised till the SET_T is reached at this point also the heating relay is
enabled.
2. If is simultaneously present a request of heating (temp< SET_T-dbt) and dehumidifying (RH >
SET_RH+dbH): the dehumidifying action has the priority over the heating action: both the
compressor and the heating relays are energised till the humidity set is reached at this point only
the heating relay is enabled.
4.3 DEHUMIDIFYING ACTION WITH DEHUMIDIFIER RELAY, OA1 = DEH – (XH340L
TERMINALS 3-4, XH340V TERMINALS. 11-12)
The configurable relay is used, (XH340L terminals 3-4, XH340V terminals. 11-12) setting the parameter
oA1 =dEH.
NOTE: the LIGHT button is not more available;
Two kinds of de-humidifying are available.
4.3.1 Dehumidifying action with ONLY de-humidifier relay
By setting the parameter tHu = db the de-humidifying action is performed by enabling the de-humidifier
relay when the humidity is higher than SET_RH + dbH.
The relay is switch off when humidity comes back to the SET_RH value.
4.3.2 Dehumidifying action with de-humidifier and compressor relays
By setting the parameter tHu = cHu the de-humidifying action is performed by enabling the de-
humidifier and compressor relays together. when the humidity is higher than SET_RH + dbH.
The relays are switched off when humidity comes back to the SET_RH value.
If is simultaneously present a request of cooling (temp>SET_T+dbt) and dehumidifying (RH >
SET_RH+dbH): the cooling action has the priority over the dehumidifying action: only the compressor
relay is energised till the SET_T is reached at this point also the de-humidifier is enabled.
5. FA NS
The fan control mode is selected by means of the "FnC" parameter:
FnC=C-n fans will switch ON and OFF with the compressor and not run during defrost:;
FnC= O-n fans will run continuously, but not during defrost
FnC=C-y fans will switch ON and OFF with the compressor and run during defrost;
FnC=O-y fans will run continuously also during defrost
6. EXTRACTOR FAN - OA1 = ESt
6.1 EXTRACTOR FAN CYCLES
If oA1= ESt, the relay is configured as extractor fan (XH340L terminals 3-4, XH340V terminals.
11-12), then it is possible to make extraction cycles, both manually and automatically.
Extraction cycle can be activated both manually by pushing the UP key for 3s, and automatically by the
internal time rFi. Cycle duration is set by the rFd parameter. The cycle can be stopped also by key.
If rFI = 0 only manual cycle can be activated.
If rFd = 0 the cycle is stopped only by pushing the key.
7. MATURING CYCLE WITH DRIPPING, RUNNING AND STOPPING PHASE.
Dripping
The diagrams displays a typical maturing cycle with the starting dripping phase.
DRIPPING PHASE lasts for the "dri" time, without humidity control, temperature set is SETG
RUNNING PHASE lasts for the "on" time, both temperature and humidity are controlled.
STOPPING PHASE lasts for the "off" time, without any control of temperature and humidity.
The end of the stopping phase is signalled by the internal buzzer and by the "End" message on the
display.
After the STOPPING PHASE the behaviour of the controller depends on the parameter trc, according
to the following settings:
trc = co controller maintains the set points of the running phase
trc = in controller stop the regulation at all.
trc = cL controller performs the running and stopping phase till is stopped manually.
trc = cLE as (trc = cL) plus at the end of each cycle the End label is displayed and the buzzer
is switched on.
XH340L – XH340LV
Running Stopping Running Stopping
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