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1592031000 Univ-R4 GB - r1.1 - 2012.07.23                         Universal-R 

                                                                   4/20 

 

2.

 

GENERAL WARNING 

WARNING: The Universal-R should always be installed by a suitable qualified person, in accordance with best 
electrical  and  refrigeration  practice.  Take  time  to  read  the  instructions.  Do  not  exceed  the  relay  ratings.  The 
Universal-R should not be considered a safety device, use suitable safety cutout devices when appropriate. 

 

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. 

2.1

 

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. 

 

The instrument must not be opened. 

 

Fit the probes where they are not accessible by the End User. 

 

In case of failure or faulty operation send the instrument back to the distributor with a detailed description of the fault. 

 

Do not exceed the maximum current that can be applied to each relay (see Technical Data). 

 

Ensure  that  the  wires  for  probes,  electrical  loads  and  the power supply are separated and far enough away to each other, without 
crossing or intertwining. 

 

In case of applications in industrial environments, the use of mains filters (our mod. DIXL930) in parallel with inductive loads could be 
useful. 

 

Heating applications – Do not exceed 105°C with the NTC probes supplied. For higher temperatures (up to a maximum of 150°C) 
use special PTC probes (e.g. our Part No. DIXL957). 

3.

 

GENERAL DESCRIPTION 

Model Universal-R is a 71x29 mm format microprocessor based controller, suitable for applications on high, medium or low temperature 
refrigeration  units.  It  is  provided  with  three  relay  outputs  to  control  compressor,  defrost  -  which  can  be  both  electrical  or  hot  gas  -  and 
evaporator fans. It can work with PTC or NTC probes. Where defrost is being terminated by time, it can operate with just one thermostat 
probe. Where defrost is being terminated by temperature, it has an input for an evaporator probe(s). 
 
The Universal-R is equipped with an internal alarm buzzer, a flashing visual alarm as well as a 4th relay (volt free) that can be configured 
as  Auxiliary  or  Alarm, to control a heater in Dead Band control (see parameter oAC) or to control the defrosting of a second evaporator 
(when “tC” parameter is set to 6). 
 
Double  evaporator  defrost:  When  tC=6,  the  controller  is  set  up  to  defrost  twin  evaporators.  Defrost  of  both  evaporators  will  start 
simultaneously but each evaporator will terminate defrost individually on temperature. Only when both evaporators have terminated defrost, 
will the controller revert to refrigeration. 
   
Each instrument is fully configurable through special parameters that can be easily programmed through the keypad. 
 

Содержание Dixell Universal-R

Страница 1: ...UNIVERSAL R ...

Страница 2: ...dedicated button during a fixed time interval at start up NEW FRONT FASCIA DESIGN Display with illuminated icons to indicate loads alarms status indications Six buttons give direct access to main functions and menu DOUBLE EVAPORATOR DEFROST FUNCTION A new feature allows defrost control of twin evaporators The 4th AUX relay and probe 3 Pb3 control defrost of the second evaporator Only when both hav...

Страница 3: ...FEATURES OF THE UNIVERSAL R ___________________________________________________16 11 THERMOSTAT OVERRIDE not available when parameter tC 1 or 7 ______________________________16 12 DEFROST TYPES _________________________________________________________________________16 13 EVAPORATOR FAN CONTROL only when parameter tC 5 or 6 __________________________________16 14 SPECIAL APPLICATIONS DEAD BAND CON...

Страница 4: ...he wires for probes electrical loads and the power supply are separated and far enough away to each other without crossing or intertwining In case of applications in industrial environments the use of mains filters our mod DIXL930 in parallel with inductive loads could be useful Heating applications Do not exceed 105 C with the NTC probes supplied For higher temperatures up to a maximum of 150 C u...

Страница 5: ...r auto recognition to work 3 If 1 minute expires before you have completed quick set up either turn OFF ON power to start set up again or enter parameter as per the instructions and adjust your parameter settings manually see Section 9 Table 1 parameter tC settings Parameter tC Type of Control Required probes 1 On Off thermostat Cooling x 1 2 Off cycle defrost timed x 1 3 Electrical Hot Gas defros...

Страница 6: ...ycle Defrost Controller Parameter tC 3 Forced defrost controller time initiated time terminated Parameter tC 4 Forced defrost controller time initiated temperature terminated Parameter tC 5 Forced defrost controller time initiated temperature terminated with evaporator fan delay after defrost Parameter tC 6 Double evaporator applications Parameter tC 7 Heating applications ...

Страница 7: ...C 2 F 2 0 C 2 F 2 0 C 2 F 2 0 C 2 F 2 0 C 2 F Minimum Set Point limit 55 C to Set Point 67 F to Set Point 50 0 C 58 F 50 0 C 58 F 50 0 C 58 F 50 0 C 58 F 50 0 C 58 F 50 0 C 58 F 50 0 C 58 F Maximum Set Point limit Set Point to 150 C Set Point to 302 F 50 0 C 122 F 50 0 C 122 F 50 0 C 122 F 50 0 C 122 F 50 0 C 122 F 50 0 C 122 F 50 0 C 122 F Anti short cycle delay 0 to 50 min 1 1 1 1 1 1 0 Second c...

Страница 8: ... Thermostat probe calibration 12 0 to 12 0 C 21 to 21 F 0 0 C 0 F 0 0 C 0 F 0 0 C 0 F 0 0 C 0 F 0 0 C 0 F 0 0 C 0 F 0 0 C 0 F Evaporator probe presence 0 evaporator probe not present 1 evaporator probe present 1 1 1 Evaporator probe calibration 12 0 to 12 0 C 21 to 21 F 0 0 C 0 F 0 0 C 0 F 0 0 C 0 F Third probe presence 0 third probe not present 1 third probe present 1 1 1 1 1 1 Third probe calibr...

Страница 9: ...tart regulation with door open alarm 0 No 1 Yes 0 0 0 0 0 0 0 Low temperature alarm of condenser 55 to 150 C 67 to 302 F 40 C 40 F 40 C 40 F 40 C 40 F 40 C 40 F 40 C 40 F High temperature alarm of condenser 55 to 150 C 67 to 302 F 110 C 230 F 110 C 230 F 110 C 230 F 110 C 230 F 110 C 230 F Differential for temperature condenser alarm recovery 0 1 to 25 5 C 1 to 45 F 5 C 5 F 5 C 5 F 5 C 5 F 5 C 5 F...

Страница 10: ...temperature decreases and reaches set point minus differential the regulation output is activated and then turned off when the temperature reaches the set point value again Minimum set point limit 55 C to SET or 67 F to SET sets the lower limit of set point adjustment Maximum set point limit SET to 150 C or SET to 302 F sets the upper limit of set point adjustment Anti short cycle delay 0 to 50min...

Страница 11: ...or second defrost 0 to 255min when P3P 0 not evaporator probe timed defrost it sets the defrost duration when P3P 1 defrost end based on temperature it sets the maximum length for defrost Note The P3 probe will be automatically set as second evaporator probe by the tC parameter Second termination temperature 55 to 50 C or 67 to 122 F sets the temperature measured by the second evaporator probe P3 ...

Страница 12: ...ith label D I 2 Pb3 Input operates as digital input 1 present the third input the one signed with label D I 2 Pb3 Input operates as third probe Third probe calibration 12 0 to 12 0 C or 21 to 21 F adjustment for third probe named Evap 2 on the label offset Display resolution 0 with decimal point 1 without decimal point Temperature measurement unit 0 Celsius 1 Fahrenheit Warning If you alter the se...

Страница 13: ...ed by closing the circuit 1 the digital input is activated by opening the circuit Time interval delay for digital input 1 alarm 0 to 255min it defines the time delay between the detection and the subsequent signalling of the alarm Time interval delay for digital input 2 alarm 0 to 255min it defines the time delay between the detection and the subsequent signalling of the alarm Compressor and fan s...

Страница 14: ...ture alarm of the condenser is active 0 the compressor keeps on working if a low temperature alarm at the condenser is active 1 the compressor is switched off while the low temperature alarm is active The regulation will restart after elapsing AC delay time Temperature set point change during the Energy Saving cycle 30 0 to 30 0 C or 54 to 54 F sets the deviation from the normal set point during t...

Страница 15: ...yboard The display will flash PoF or Pon for a few seconds to confirm locking or unlocking respectively Enter programming mode keep both buttons pressed for 3 sec release them and then press them again for 8 sec The first label of Pr2 level will be displayed Exit programming mode press together to return to normal display 9 PROGRAMMING MODE 9 1 USER PROGRAMMING LEVEL PR1 To enter programming level...

Страница 16: ...it degrees FLASHING Programming mode 11 THERMOSTAT OVERRIDE not available when parameter tC 1 or 7 For rapid chilling or freezing the thermostat can be overridden by pressing the UP button until the icon lights up The compressor will run in continuous mode irrespective of temperature for the time period set in parameter CCt Normal operation will then resume automatically The cycle can also be term...

Страница 17: ... re start if parameter rrd 1 EA Alternating with room temperature Generic external alarm Alarm output ON Other outputs unchanged bAL Alternating with room temperature Serious external alarm Alarm output ON Other outputs OFF 15 1 MUTING ALARM BUZZER RELAY The alarm buzzer can be muted by pressing any button The controller will briefly show the reset rES label Parameter tbA defines how the alarm rel...

Страница 18: ...ectly measure the average room temperature Place the defrost termination probe among the evaporator fins in the coldest place where most ice is formed far from heaters or from the warmest place during defrost to prevent premature defrost termination 20 TECHNICAL DATA Housing Self extinguishing ABS Size Frontal 32x74 mm depth 70 mm Mounting Panel mounting in a 71x29 mm panel cut out Frontal protect...

Страница 19: ...d resistance value Change probe type or alter parameter PbC Fit evaporator probe or alter parameter tC Display flashing EE Data corruption Check for electrical spikes and interference Fit filters DIXL930 DIXL932 Ensure probe cables are separated from power cables Re check all parameter settings Replace controller if still not working Display flashing dA Door has been left open too long Shut the do...

Страница 20: ...1592031000 Univ R4 GB r1 1 2012 07 23 Universal R 20 20 ...

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