Installing and Operating Instructions
Contents
1. see address with a detailed description of the fault e Consider the maximum current which can be applied to each relay see Technical Data e Ensure that the wires for probes loads and the power supply are separated and far enough from each other without crossing or intertwining e 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 XR30C format 32 x 74 mm is a digital termostat with off cycle defrost designed for refrigeration applications at normal temperature It provides two relay outputs one for the compressor the other one can be used for alarm signalling or as auxiliary output The probe input can be selected between PTC or NTC The instrument has a digital input for alarm signalling for switching the auxiliary output or for start a defrost cycle 3 CONTROLLING LOADS 3 1 COMPRESSOR The regulation is performed according to the temperature measured by the thermostat probe with a positive differential from the set point if the temperature increases and reaches set point plus differential the compressor is started and then turned off when the temperature reaches the set point value again Tempera SET HY S277 ep ae anes In case of fault in the thermostat probe the start and stop of the compressor are timed through parameters COn and COF 3 2 DEFROST Defrost is perfo2. It starts a defrost if there are the right conditions After the defrost is finished the normal regulation will restart only if the digital input is disabled otherwise the instrument will wait until the MdF safety time is expired 8 7 INVERSION OF THE KIND OF ACTION HEATING COOLING i1F Htr This function allows to invert the regulation of the controller from cooling to heating and viceversa 8 8 DIGITAL INPUTS POLARITY The digital input polarity depends on the i1P parameter i1P CL the input is activated by closing the contact i1P OP the input is activated by opening the contact 9 INSTALLATION AND MOUNTING Instrument XR30C shall be mounted on vertical panel in a 29x71 mm hole and fixed using the special bracket supplied To obtain an IP65 protection grade use the front panel rubber gasket mod RG C as shown in figure BRACKET PUSH TO RELEASE RUBBER GASKET The temperature range allowed for correct operation is 0 60 C Avoid places subject to strong vibrations corrosive gases excessive dirt or humidity The same recommendations apply to probes Let air circulate by the cooling holes 10 ELECTRICAL CONNECTIONS The instrument is provided with screw terminal block to connect cables with a cross section up to 2 5 mm Before connecting cables make sure the power supply complies with the instrument s requirements Separate the probe cables from the power supply cables from
3. SETPOINT 1 Push the SET key for more than 2 seconds to change the Set point value The value of the set point will be displayed and the LED starts blinking 2 3 To change the Set value push the a or arrows within 10s 4 To memorise the new set point value push the SET key again or wait 10s 6 3 HOW TO START A MANUAL DEFROST se Push the DEF key for more than 2 seconds and a manual CF _ defrost will start 6 4 HOW TO SWITCH ON OR OFF THE SECOND RELAY OAC LHt Hold pressed the key for some seconds till the AUX LED is AU turned ON or OFF 1 Enter the Programming mode by pressing the Set and ae DOWN key for 3s 44 and 4 start blinking 2 SET 3 LED is blinking To exit Press SET UP or wait 15s without pressing a key v 6 5 HOW TO CHANGE A PARAMETER VALUE Select the required parameter a 4 Use UP or DOWN to change its value NOTE the set value is stored even when the procedure is exited by waiting the To change the parameter s value operate as follows Press the SET key to display its value now only the 5 Press SET to store the new value and move to the following parameter time out to expire 6 6 THE HIDDEN MENU The hidden menu Includes all the parameters of the instrument 6 6 1 HOW TO ENTER THE HIDDEN MENU 1 Enter the Programming mode by pressing the Set key v for 3s LED 1 and 3 start blinking 2 When a parameter is displayed keep pressed the Set SET for
4. displayed bAL serious alarm CA message is displayed PAL pressure switch alarm CA message is displayed dor door switch function dEF activation of a defrost cycle LHt switch on the second relay if o0A1 LHt Htr kind of action inversion cooling heating did 0 255 min with i1F EAL or i1F bAL digital input alarm delay delay between the detection of the external alarm condition and its signalling with i1F dor door open signalling delay with i1F PAL time for pressure switch function time interval to calculate the number of the pressure switch activation nPS Pressure switch number 0 15 Number of activation of the pressure switch during the did interval before signalling the alarm event I2F PAL If the nPS activation in the did time is reached switch off and on the instrument to restart normal regulation e odc Compressor status when open door no Fan normal CPr F_C Compressor OFF OTHER PbC Type of probe it allows to set the kind of probe used by the instrument PbC PBC probe ntC NTC probe e rEL_ Software release for internal use e Ptb Parameter table code readable only 8 DIGITAL INPUT The free contact digital input is programmable in five different configurations by the i1F parameter 2 4 Dwell 8 1 DOOR SWITCH INPUT i1F dor It signals the door status and the corresponding relay output status through the odc parameter no Fan norma
5. the outputs and the power connections Do not exceed the maximum current allowed on each relay in case of heavier loads use a suitable external relay 10 1 PROBE CONNECTION The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid infiltration It is recommended to place the thermostat probe away from air streams to correctly measure the average room temperature Place the defrost termination probe among the evaporator fins in the coldest place where most ice is Installing and Operating Instructions 1592007220 formed far from heaters or from the warmest place during defrost to prevent premature defrost termination 11 HOW TO USE THE HOT KEY 11 1 HOW TO PROGRAM A HOT KEY FROM THE INSTRUMENT UPLOAD 1 Program one controller with the front keypad 2 When the controller is ON insert the Hot key and push a key the uPL message appears followed a by flashing End Push SET key and the End will stop flashing Turn OFF the instrument remove the Hot Key then turn it ON again NOTE the Err message is displayed for failed programming In this case push again key if you want to restart the upload again or remove the Hot key to abort the operation 11 2 HOW TO PROGRAM AN INSTRUMENT USING A HOT KEY DOWNLOAD i Turn OFF the instrument 2 insert a programmed Hot Key into the 5 PIN receptacle and then turn the Controller ON 3 Automatically the param
6. 15 05 2003 doc XR30C 15 DEFAULT SETTING VALUES kabei Name Rane F Set Setpoint PSUS 8 087 2 0 4 US Maximum setpoint SET 110 C SET 230 F_ 110 230 _Ot_ Thermostat probe calibration 12 12 C 120 120 _ LOdS Outputs delay at startup 02255min 1 0 255 min 15 COF Compressor OFF time with faulty 0 255 min L ind of action CL cooling Ht heating C CF Temperature measurement unit Tar CE LS Minimum set point 50 C SET 58 F SET 50 0 58 2SlO CCt COn ontinuos cycle duration ompressor ON time with faulty O O O O Alg o fe O O o o in integer dE dec point dE Mar interval between defrost oytes HAR length for defrost 0 255 min 2 Displaying during defrost rt it SEt DEF i MAX display delay after defrost 0 255 min rE related to set Ab absolute ALU MAXIMUM temperature alarm Set 110 0 C Set 230 F 110 230 Minimum temperature alarm 50 0 C Set 58 F Set 50 58 ALd Temperature alarm delay 0 255 min Delay of temperature alarm at 0 23he 50 start up Alarm relay silencing Y 2 relay configuration ALr alarm dEF no select it LHt auxiliary onF always on Fan no select it cL Digital input polarity cL Digital input configuration EAL extern alarm bAL lock LHt regulation PAL press switch dor door switch dEF defrost LHt switch on 2 relay Htr cooling heating Digital input alarm delay 0 255min 5 i swit
7. 5 min time during which the compressor is active in case of faulty thermostat probe With COn 0 compressor is always OFF e COF Compressor OFF time with faulty probe 0255 min time during which the compressor is OFF in case of faulty thermostat probe With COF 0 compressor is always active CH Type of action CL cooling Ht heating DISPLAY e CF Temperature measurement unit C Celsius F Fahrenheit WARNING When the measurement unit is changed the SET point and the values of the parameters Hy LS US Ot ALU and ALL have to be checked and modified if necessary rES Resolution for C in 1 C dE 0 1 C allows decimal point display DEFROST idF Interval between defrost cycles 0 120h Determines the time interval between the beginning of two defrost cycles MdF Maximum length for defrost 0 255min When P2P n not evaporator probe timed defrost it sets the defrost duration when P2P y defrost end based on temperature it sets the maximum length for defrost e dFd Temperature displayed during defrost rt real temperature it temperature at defrost start SEt set point dEF dEF label e dAd MAX display delay after defrost 0 255min Sets the maximum time between the end of defrost and the restarting of the real room temperature display ALARMS e ALC Temperature alarms configuration Ab rE Ab absolute temperature alarm temperature is given by the ALL or ALU values rE temperature a
8. Dill Installing and Operating Instructions Digital controller with off cycle defrost XR30C CONTENTS GENERAL WARNING GENERAL DESCRIPTION CONTROLLING LOADS FRONT PANEL COMMANDS TEMPERATURE ALARM AND ITS DURATION RECORDING HACCP __ MAIN FUNCTIONS PARAMETERS DIGITAL INPUT INSTALLATION AND MOUNTING ELECTRICAL CONNECTIONS HOW TO USE THE HOT KEY 12 ALARM SIGNALS 13 TECHNICAL DATA 14 CONNECTIONS 15 DEFAULT SETTING VALUES 1 GENERAL WARNING ONDU o N oO PRWWWWWNHNA HHA A a 1 1 PLEASE READ BEFORE USING THIS MANUAL e This manual is part of the product and should be kept near the instrument for easy and quick reference e The instrument shall not be used for purposes different from those described hereunder It cannot be used as a safety device e Check the application limits before proceeding 1 2 SAFETY PRECAUTIONS e Check the supply voltage is correct before connecting the instrument e 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 e Warning disconnect all electrical connections before any kind of maintenance e Fit the probe where it is not accessible by the End User The instrument must not be opened e In case of failure or faulty operation send the instrument back to the distributor or to Dixell s r l
9. Max Temperature u High temp alarm Set ALL Low temp alarm lt ST Alarm duration Times 5 1 HOW TO SEE THE ALARM DURATION AND MAX MIN TEMPERATURE If the alarm LED is on an alarm has taken place To see the kind of alarm the max min reached temperature and alarm duration do as follows 1 Push the Up or Down key 2 On the display the following message is shown HAL for high temperature alarm LAL fot the minimum allarm followed by the Maximum minimum temperature Then the tiM tiMe message is displayed followed by the Duration in h mm 3 Then the instrument displays the temperature once again NOTE1 if an alarm is still occurring the tim shows the partial duration NOTE2 the alarm is recorded when the temperature come back to normal values 5 2 HOW TO RESET A RECORDED ALARM OR ONE THAT IS STILL OCCURRING 1 Hold the SET key pressed for more than 3s while the recorded alarm is displayed the rSt message will be displayed 2 To confirm the operation the rSt message starts blinking and the normal temperature will be displayed 6 MAIN FUNCTIONS 6 1 HOW TO SEE THE SETPOINT SET 1 Push and immediately release the SET key the display will show the Set point value 2 Push and immediately release the SET key or wait for 5 seconds to display the probe value again 1 4 Dill Installing and Operating Instructions 6 2 HOW TO CHANGE THE
10. ch Compressor status with open door CPr F_C Compr OFF bC Kind of probe ntc Ptc Software release PT Map code Hidden parameters CE ALc Temperat alarms configuration wo v m m P Dixell s r l Z I Via dell Industria 27 32010 Pieve d Alpago BL ITALY tel 39 0437 98 33 fax 39 0437 98 93 13 E mail dixell dixell com http www dixell com 4 4
11. de for the time set through the CCt parameter The cycle can be terminated before the end of the set time using the same activation key a for 3 seconds 7 PARAMETERS NOTE the parameters preceded by dots are in the Hidden Menu REGULATION Hy Differential 0 1 25 5 C 1 255 F Intervention differential for set point Compressor Cut IN is Set Point Plus Differential Hy Compressor Cut OUT is when the temperature reaches the set point e LS Minimum set point 50 C SET 58 SET Sets the minimum acceptable value for the set point e US Maximum set point SET 110 C SET 230 Set the maximum acceptable value for set point 1592007220 XR30C GB r1 0 15 05 2003 doc XR30C 1592007220 Ot Thermostat probe calibration 12 0 12 0 C 120 120 F allows to adjust possible offset of the thermostat probe e OdS Outputs activation delay at start up 0 255min This function is enabled at the initial start up of the instrument and inhibits any output activation for the period of time set in the parameter AC Anti short cycle delay 0 50 min minimum interval between the compressor stop and the following restart e CCt Compressor ON time during continuous cycle 0 0 24 0h res 10min Allows to set the length of the continuous cycle compressor stays on without interruption for the CCt time Can be used for instance when the room is filled with new products e COn Compressor ON time with faulty probe 0225
12. eter list of the Hot Key is downloaded into the Controller memory the doL message is blinking followed a by flashing End After 10 seconds the instrument will restart working with the new parameters Remove the Hot Key oF NOTE the message Err is displayed for failed programming In this case turn the unit off and then on if you want to restart the download again or remove the Hot key to abort the operation 12 ALARM SIGNALS Message P4 Compressor output according to par Con and COF HA LA dA EA CA CA 12 1 ALARM RECOVERY Probe alarm P1 starts some seconds after the fault in the related probe it automatically stops some seconds after the probe restarts normal operation Check connections before replacing the probe Temperature alarms HA and LA automatically stop as soon as the thermostat temperature returns to normal values and when defrost starts Alarms EA and CA with i1F bAL recover as soon as the digital input is disabled Alarm CA with i1F PAL recovers only by switching off and on the instrument 13 TECHNICAL DATA Housing self extinguishing ABS Case XR30C frontal 32x74 mm depth 60mm Mounting XR30C panel mounting in a 71x29mm panel cut out Protection IP20 Frontal protection IP65 with frontal gasket RG C optional Connections Screw terminal block lt 2 5 mm wiring Power
13. l any change CPr F_C Compressor OFF Since the door is opened after the delay time set through parameter did the door alarm is enabled the display shows the message dA and the regulation restarts The alarm stops as soon as the external digital input is disabled again With the door open the high and low temperature alarms are disabled 8 2 GENERIC ALARM i1F EAL As soon as the digital input is activated the unit will wait for did time delay before signalling the EAL alarm message The outputs status don t change The alarm stops just after the digital input is de activated Po 8 3 SERIOUS ALARM MODE i1F bAL When the digital input is activated the unit will wait for did delay before signalling the CA alarm message The relay outputs are switched OFF The alarm will stop as soon as the digital input is de activated 8 4 PRESSURE SWITCH i1F PAL If during the interval time set by did parameter the pressure switch has reached the number of activation of the nPS parameter the CA pressure alarm message will be displayed The compressor and the regulation are stopped When the digital input is ON the compressor is always OFF If the nPS activation in the did time is reached switch off and on the instrument to restart normal regulation 8 5 SWITCHING SECOND RELAY ON i1F LHt With oA1 LHt it switches on and off the second relay 8 6 START DEFROST i1F dFr
14. larms are referred to the set point Temperature alarm is enabled when the temperature exceeds the SET ALU or SET ALL values ALU MAXIMUM temperature alarm SET 110 C SET 230 F when this temperature is reached the alarm is enabled after the ALd delay time ALL Minimum temperature alarm 50 0 SET C 58 230 F when this temperature is reached the alarm is enabled after the ALd delay time e ALd Temperature alarm delay 02255 min time interval between the detection of an alarm condition and alarm signalling e dAO Exclusion of temperature alarm at startup from 0 0 min to 23 5h time interval between the detection of the temperature alarm condition after instrument power on and alarm signalling SECOND RELAY AND DIGITAL INPUT e tbA Alarm relay silencing with oAC ALr n silencing disabled alarm relay stays on till alarm condition lasts y silencing enabled alarm relay is switched OFF by pressing a key during an alarm OA1 Second relay configuration ALr alarm LHt auxiliary onF always on dEF do not select it FAn do not select it AoPAlarm relay polarity it set if the alarm relay is open or closed when an alarm happens CL the relay is closed oP the relay is open i1P Digital input polarity oP the digital input is activated by opening the contact CL the digital input is activated by closing the contact i1F Digital input configuration EAL external alarm EA message is
15. more than 7s The Pr2 label will be displayed a immediately followed from the HY parameter NOW YOU ARE IN THE HIDDEN MENU 3 Select the required parameter 4 Press the SET key to display its value Now only the LED is blinking 5 Use a or v to change its value 6 Press SET to store the new value and move to the following parameter To exit Press SET or wait 15s without pressing a key NOTE the set value is stored even when the procedure is exited by waiting the time out to expire 6 6 2 HOW TO MOVE A PARAMETER FROM THE HIDDEN MENU TO THE FIRST LEVEL AND VICEVERSA Each parameter present in the HIDDEN MENU can be removed or put into THE FIRST LEVEL user level by pressing SET v In HIDDEN MENU when a parameter is present in First Level the decimal point is on 6 7 HOW TO LOCK THE KEYBOARD sf 1 Keep pressed for more than 3 s the and keys 2 The POF message will be displayed and the keyboard will be locked At this point it will be possible only to see the set point or the MAX o Min temperature stored 3 If akey is pressed more than 3s the POF message will be displayed 6 8 TO UNLOCK THE KEYBOARD Keep pressed together for more than 3s the a and v keys till the Pon message will be displayed 6 9 THE CONTINUOUS CYCLE When defrost is not in progress it can be activated by holding F the key pressed for about 3 seconds The compressor operates in continuous mo
16. rmed through a simple stop of the compressor Parameter IdF controls the interval between defrost cycles while its length is controlled by parameter MdF 1592007220 XR30C GB r1 0 15 05 2003 doc XR30C 1592007220 AUX av Q prg 4 SET ae Oa C pll SET To display target set point in programming mode it selects a parameter or confirm an operation amp DEF To start a manual defrost a UP To see the last temperature alarm happened in programming mode it browses the parameter codes or increases the displayed value DOWN To see the last temperature alarm happened hold pressed it switches the auxiliary output in programming mode it browses the parameter codes or decreases the displayed value KEY COMBINATIONS aty To lock amp unlock the keyboard SET To enter in programming mode SET a To return to the room temperature display 4 1 USE OF LEDS Each LED function is described in the following table LED MODE FUNCTION CS x oN Compressor enabled 3 Flashing Programming Phase flashing with 8 Anti short cycle delay enabled JON Defrost enabled Flashing Programming Phase flashing with 4 AUX ON _ Second relay ON O ON rr emperar aam U U 5 TEMPERATURE ALARM AND ITS DURATION RECORDING HACCP XR30C signals and records temperature alarms together with their duration and max value reached See drawing Ex High temperature alarm Temperature
17. supply according to the model 12Vac dc 10 24Vac dc 10 230Vac 10 50 60Hz 110Vac 10 50 60Hz Power absorption 3VA max Display 3 digits red LED 14 2 mm high Inputs 1 NTC or PTC probe Digital input free contact Relay outputs compressor SPST relay 8 3 A 250Vac or SPST relay 20 8 A 250Vac second relay SPDT relay 8 3 A 250Vac or Data storing on the non volatile memory EEPROM Kind of action 1B Pollution grade normal Software class A Operating temperature 0 60 C Storage temperature 30 85 C Relative humidity 20 85 no condensing Measuring and regulation range NTC probe 40 110 C 40 230 F PTC probe 50 150 C 58 302 F Resolution 0 1 C or 1 C or 1 F selectable Accuracy ambient temp 25 C 0 7 C 1 digit 1592007220 XR30C GB r1 0 15 05 2003 doc XR30C 3 4 p ll Installing and Operating Instructions 1592007220 14 CONNECTIONS 14 1 XR30C 8A COMPRESSOR 8 3 A250V 8 3 A250V Supply Comp 230V 12Vac dc supply connect to the terminals 7 and 8 24Vac dc supply connect to the terminals 7 and 8 120Vac supply connect to the terminals 7 and 8 14 2 XR30C 20A COMPRESSOR 8 3 A250V 20 8 A250V amp Supply Comp 230V 12Vac dc supply connect to the terminals 7 and 8 24Vac dc supply connect to the terminals 7 and 8 120Vac supply connect to the terminals 7 and 8 1592007220 XR30C GB r1 0
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