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COOL MATE XLH260

Emerson COOL MATE XLH260 Operating Instructions Manual

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Operating instructions
cod. 1592
cod. 1592cod. 1592
017400017400
017400
1592017400 XLH260 GB r1.0 15.04.2005.doc XLH260 1/15
Temperature and Humidity controller
XLH260
XLH260XLH260
XLH260
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Operating instructions
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Operating instructions
cod. 1592
cod. 1592cod. 1592
017400017400
017400
1592017400 XLH260 GB r1.0 15.04.2005.doc XLH260 2/15
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XLH260
XLH260XLH260
XLH260
INDICE
1. GENERAL WARNINGS_________________________________________________________ 3
2. GENERAL DESCRIPTION ______________________________________________________ 3
3. TEMPERATURE REGULATION__________________________________________________ 3
4. HUMIDITY REGULATION_______________________________________________________ 3
5. FA NS ______________________________________________________________________ 4
6. THE DISPLAY ________________________________________________________________ 5
7. PARAMETER LIST ____________________________________________________________ 7
8. DIGITAL INPUT_______________________________________________________________ 9
9. INSTALLATION AND MOUNTING _______________________________________________ 10
10. DIMENSIONS _______________________________________________________________ 12
11. ELECTRICAL CONNECTIONS__________________________________________________ 12
12. HOW TO USE THE HOT KEY __________________________________________________ 12
13. ALARM SIGNALLING _________________________________________________________ 13
10. TECHNICAL DATA ___________________________________________________________ 13
14. XLH260 CONNECTIONS ______________________________________________________ 14
15. DEFAULT SETTING VALUES __________________________________________________ 14
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Operating instructions
cod. 1592
cod. 1592cod. 1592
017400017400
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1592017400 XLH260 GB r1.0 15.04.2005.doc XLH260 3/15
1. GENERAL WARNINGS
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.
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 formation of 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 XLH260 is microprocessor controller, suitable for applications on medium or low temperature refrigerating units. It control both humidity and temperature. It has 6 output relays to control compressor, heating elements, defrost, fan de-humidifier and humidifier. It has 2 NTC inputs one for thermostat the other one for defrost. It’s also present an 4÷20mA input for humidity. There is one digital input (free contact) configurable by parameter. An output allows the user to program the parameter list with the “Hot Key”.
3. TEMPERATURE REGULATION
The temperature regulation is performed through neutral zone using compressor and heater output relays.
Set point
OFF
ON
• Heating output: CUT IN is “SET TEMP- dbt”, CUT OUT is when the temperature reaches the set point.
• Compressor output: CUT IN is “ SET TEMP + dbt”, CUT OUT is when the temperature reaches the set point.
3.1 DEFROST
Two defrost modes are available through the “tdF” parameter: defrost with electrical heater or hot gas. The defrost interval is controlled 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
Humidity regulation during a defrost depends on the Hud parameter. With Hud=no humidity regulation is disabled. With Hud=yES humidity regulation is performed also during a 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.
4.2 DEHUMIDIFYING ACTION WITHOUT DEHUMIDIFIER RELAY (OA1 DIFFERENT FROM DEH) – STANDARD CONFIGURATION
In this case the dehumidifying action is performed by setting the following parameters in this way:
tHu = cH kind of dehumidifying by means of heating and compressor relays oA1 different from dEH:
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Operating instructions
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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 TEMP+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 TEMP is reached at this point also the heating relay is enabled.
2. If is simultaneously present a request of heating (temp< SET TEMP-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) The configurable relay is used, 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 TEMP+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 TEMP 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
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Operating instructions
cod. 1592
cod. 1592cod. 1592
017400017400
017400
1592017400 XLH260 GB r1.0 15.04.2005.doc XLH260 5/15
6. THE DISPLAY
C
F
SET SET
%RH
To display and modify target temperature set point. (SET TEMP)
To display and modify target humidity set point (SET %RH); in programming mode it selects a parameter or confirm an operation.
In programming mode it browses the parameter codes or increases the displayed value.
To start a manual defrost: hold it pressed for at least 3s. In programming mode it browses the parameter codes or decreases the displayed value.
Switch ON and OFF the light, if present (oA1=lig)
Switch ON and OFF the instrument.
KEY COMBINATIONS
+
To lock and unlock the keyboard
+
To enter the programming mode.
+
To exit the programming mode.
6.1 ICONS AND SYMBOLS
Each LED function is described in the following table.
LED MODE FUNCTION
ON
- Instrument in stand by.
- In “Pr2” indicates that the parameter is also present in “Pr1”.
°C
ON °C
°C
FLASHING If measurement unit is °C, it flashing on programming mode
°F
ON °F
°F
FLASHING If measurement unit is °F, it flashing on programming mode
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