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COOL MATE XLR470
Operating Manual
18 pgs1.21 Mb0

dixell COOL MATE XLR470 Operating Manual

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Operating manual cod. 1592
cod. 1592cod. 1592
cod. 1592017
017050
050
1592017050 XLR470 GB r1.0 24.05.07.doc XLR470 1/18
Dual temperature controller
XLR470
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XLR470
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Operating Manual
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Operating manual cod. 1592
cod. 1592cod. 1592
cod. 1592017
017050
050
1592017050 XLR470 GB r1.0 24.05.07.doc XLR470 2/18
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XLR470
XLR470XLR470
XLR470
INDICE
1. GENERAL WARNINGS_________________________________________________________ 3
2. GENERAL DESCRIPTION ______________________________________________________ 3
3. TEMPERATURE CONTROL_____________________________________________________ 3
4. DEFROST ___________________________________________________________________ 3
5. CONTROL OF EVAPORATOR FANS FOR SECTION 1 _______________________________ 4
6. CONTROL OF EVAPORATOR FANS FOR SECTION 2 _______________________________ 5
7. DISPLAY ____________________________________________________________________ 5
8. PARAMETER LIST ____________________________________________________________ 7
9. DIGITAL INPUTS ____________________________________________________________ 11
10. INSTALLATION AND MOUNTING _______________________________________________ 11
11. DIMENSIONS _______________________________________________________________ 13
12. ELECTRICAL CONNECTIONS__________________________________________________ 13
13. HOW TO USE THE HOT KEY __________________________________________________ 13
14. ALARM SIGNALS ____________________________________________________________ 14
15. TECHNICAL DATA ___________________________________________________________ 15
16. WIRING CONNECTIONS ______________________________________________________ 15
17. DEFAULT SETTING VALUES __________________________________________________ 16
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Operating manual cod. 1592
cod. 1592cod. 1592
cod. 1592017
017050
050
1592017050 XLR470 GB r1.0 24.05.07.doc XLR470 3/18
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.p.A.” (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
Model XLR470, 32x74 mm format, is a microprocessor based controller, able to control 2 temperatures in an independent way. The first section is suitable for applications on medium or low temperature refrigerating units. It is provided with 3 relay outputs to control
compressor, defrost - which can be either electrical or hot gas - and the evaporator fans. It is also provided with 2 NTC or PTC probe inputs, one for temperature control the other one to control the defrost end temperature of the evaporator. The second section is suitable for applications on medium or low temperature refrigerating units. It is provided with 3 relay outputs to control compressor, defrost - which can be either electrical or hot gas - and the evaporator fans. It is also provided with 2 NTC or PTC probe inputs, one for temperature control the other one to control the defrost end temperature of the evaporator.. There are two digital inputs (free contact) completely configurable by parameters. The standard TTL output allows the user to connect, by means of a TTL/RS485 external module, a ModBUS-RTU compatible monitoring system and to programme the parameter list with the “Hot Key”.
3. TEMPERATURE CONTROL
1. THE COMPRESSOR 1 (2)
For each section, the regulation is performed according to the temperature measured by its own thermostat probe with a positive differential from the set point. If the temperature increases and reaches set point1 (2) plus differential1 (2) the compressor is started and then turned off when the temperature reaches the set point value again.
In case of fault in the thermostat probe the start and stop of the compressor are timed through parameters “COn1(2)” and “COF1(2)”.
4. DEFROST
1. SECTION 1
For the section 1 two defrost modes are available through the “tdF1” parameter: tdF1= rE defrost with electrical heater tdF1= in or hot gas. The defrost interval is control by means of parameter “EdF1”: rtc (only for instruments with RTC): beginning of defrost cycles is set by the L1d1÷L1d6 parameters during the working days and S1d1÷S1d6
during the holidays
in the defrost is made every “IdF1” time Sd the interval “IdF” is calculate through Smart Defrost algorithm (only when the compressor is ON) At the end of defrost the drip time is controlled through the “Fdt1” parameter.
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Operating manual cod. 1592
cod. 1592cod. 1592
cod. 1592017
017050
050
1592017050 XLR470 GB r1.0 24.05.07.doc XLR470 4/18
2. SECTION 2
For the section 2 two defrost modes are available through the “tdF2” parameter: tdF2= rE defrost with electrical heater tdF2= in or hot gas. The defrost interval is control by means of parameter “EdF2”: rtc (only for instruments with RTC): beginning of defrost cycles is set by the L2d1÷L2d6 parameters during the working days and S2d1÷S2d6
during the holidays
in the defrost is made every “IdF” time Sd the interval “IdF” is calculate through Smart Defrost algorithm (only when the compressor is ON) At the end of defrost the drip time is controlled through the “Fdt2” parameter.
3. RELATION BETWEEN DEFROSTS
Different kinds of defrosts are available for each section. The relation between defrosts is set by the dFS parameter: relation between defrosts. 4 relation between the 2 sections of the controller are available, to manage different kinds of applications:
in = independent defrosts; StS = same defrost start, synchronised defrost end; St = same defrost start, independent defrost end; SE = sequential defrost;
• dFS= in - independent defrosts
The defrosts of the 2 sections of controller are completely independent.
First section: defrost interval is set by idF1 parameter. Second section: defrost interval is set by idF2 parameter. The defrost interval is control by means of parameter “EdF1(2)”: in the defrost is made every “IdF1(2)” time Sd the interval “IdF1(2)” is calculate through Smart Defrost algorithm (only when the compressor is ON)
Manual defrost activation, by pushing the DOWN key (defrost 1) or UP key (defrost 2). By pushing the Down key or Up key for 3s, a defrost request is generated for section 1 or 2 respectively. The defrost interval is re-loaded.
• dFS = StS – Same defrost start, end defrost synchronised or dFS = St - Same defrost start, end defrost independent.
The defrost of the 2 sections of controller starts at the same time. idF1 parameter sets the defrost interval for both the sections. The defrosts are performed at regular interval if EdF1 = in or according to the Smartdefrost algorithm if EdF1 = Sd.
With dFS = StS regulation restarts only when defrost is finished for both the sections. The section that finishes the defrost before the other starts dripping time until also the other section has not finished its defrost. Manual defrost activation, by pushing the DOWN key (defrost 1) or UP key (defrost 2). By pushing the Down key or Up key for 3s, a defrost request is generated for both the sections 1 and 2. The defrost interval is re-loaded.
With dFS = St each section restarts regulation as soon as its defrost is finished.
• dFS = SE – sequential defrost
The defrost of 2 sections is synchronised. idF1 parameter sets the defrost interval for both the sections. Defrosts are performed at regular interval if EdF1 = in or according to the Smartdefrost algorithm if EdF1 = Sd. Section 1 does its defrost first, at the end of the defrost of section 1, section 2 starts its defrost.. Manual defrost activation, by pushing the DOWN key (defrost 1) or UP key (defrost 2). By pushing the Down key or Up key for 3s, a defrost request is generated for both the sections 1 and 2. The defrost interval is re-loaded.
5. CONTROL OF EVAPORATOR FANS FOR SECTION 1
Section 1 has 1 relay to control evaporator fan (25-26) The fan control mode is selected by means of the “FnC1” parameter:
FnC1=C-n fans will switch ON and OFF with the compressor and not run during defrost:; FnC1= O-n fans will run continuously, but not during defrost
After defrost, there is a timed fan delay allowing for drip time, set by means of the “Fnd1” parameter.
FnC1=C-y fans will switch ON and OFF with the compressor and run during defrost; FnC1=O-y fans will run continuously also during defrost
An additional parameter “FSt1” provides the setting of temperature, detected by the evaporator probe, above which the fans are always OFF. This can be used to make sure circulation of air only if his temperature is lower than set in “FSt1”.
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Operating manual cod. 1592
cod. 1592cod. 1592
cod. 1592017
017050
050
1592017050 XLR470 GB r1.0 24.05.07.doc XLR470 5/18
6. CONTROL OF EVAPORATOR FANS FOR SECTION 2
Section 2 has 1 relay to control evaporator fan (26-27) The fan control mode is selected by means of the “FnC2” parameter:
FnC2=C-n fans will switch ON and OFF with the compressor 2and not run during defrost:; FnC2= O-n fans will run continuously, but not during defrost
After defrost, there is a timed fan delay allowing for drip time, set by means of the “Fnd2” parameter.
FnC1=C-y fans will switch ON and OFF with the compressor 2 and run during defrost; FnC1=O-y fans will run continuously also during defrost
An additional parameter “FSt2” provides the setting of temperature, detected by the evaporator probe 2, above which the fans are always OFF. This can be used to make sure circulation of air only if his temperature is lower than set in “FSt2”.
7. DISPLAY
1.3 THE KEYBOARD
To display and modify target set point 1. During programming it selects a parameter or it confirms a value.
To display and modify target set point 2
in programming mode it browses the parameter codes or decreases the displayed value. By holding it pressed for 3s the defrost for section 1 is started
In programming mode it browses the parameter codes or increases the displayed value. By holding it pressed for 3s the defrost for section 2 is started.
It activates light 1
It activates light 2
Section 1 Stand-by
Section 2 Stand-by
KEYS COMBINATIONS
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Operating manual cod. 1592
cod. 1592cod. 1592
cod. 1592017
017050
050
1592017050 XLR470 GB r1.0 24.05.07.doc XLR470 6/18
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To lock and unlock the keyboard.
+
To enter the programming mode.
+
To exit the programming mode.
1.4 MEANING OF THE ICONS
ICON FUNCTION MEANING
ON Celsius degree ON Fahrenheit degree
ON Compressor 1 on
FLASHING Anti-short cycle delay enabled for compressor 1
ON Compressor 2 on
FLASHING Anti-short cycle delay enabled for compressor 2
ON Defrost 1 in progress
FLASHING Drip time in progress for section 1
ON Defrost 2 in progress
ON Fan1 enabled
FLASHING Drip time in progress – section 1
ON Fan2 enabled
FLASHING Drip time in progress– section 2
ON ALARM signal
1.5 HOW TO SEE AND MODIFY THE SET-POINT
Push and release the SET1 or SET2 key: the bottom display shows the label St1 or St2 the upper display shows the Set point value flashing To change the Set value push the o
o o
o or nnnn within 15s.
To memorise the new set point value push the SET1 or SET2 key again or wait 15s.
1.6 HOW TO START A MANUAL DEFROST FOR THE SECTION 1 OR SECTION 2
To start a defrost for the section 1: push the DOWN key( ) for 3s. To start a defrost for the section 2: push the UP key( ) for 3s.
1.7 HOW TO ENTER THE “PR1” PARAMETER LIST
To change the parameter’s value operate as follows: Enter the Programming mode by pressing the Set1 and DOWN key for 3s The controller will show the first parameter present in the Pr1 menu: Bottom menu: label Upper menu: value
To exit: Press SET + UP or wait 15s without pressing a key.
1.8 HOW TO ENTER IN PARAMETERS LIST “PR2”
To access parameters in “Pr2”: Enter the “Pr1” level. Select “Pr2” – “PAS” parameter and press the “SET1” key. The flashing value “0 - - ” is displayed. use oooo or nnnn to input the security code and confirm the figure by pressing “SET” key.
The security code is “321”. If the security code is correct the access to “Pr2” is enabled by pressing “SET1” on the last digit.
Another possibility is the following: After switching ON the instrument, within 30 seconds, push SET1 + nnnn keys together for 3s: the Pr2 menu will be entered.
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