Installing and Operating Instructions
Contents
1. be opened e 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 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 XR60C 32x74 mm format is a microprocessor based controller suitable for applications on medium or low temperature ventilated refrigerating units It has three relay outputs to control compressor fan and defrost which can be either electrical or reverse cycle hot gas It is also provided with two NTC or PTC probe inputs one for temperature control the other to be located onto the evaporator to control the defrost termination temperature and to managed the fan The instrument is fully configurable through special parameters that can be easily programmed through the keyboard 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 of2. circulation of air only if his temperature is lower than set in FSt 3 3 1 Forced activation of fans This function managed by the Fet parameter is designed to avoid short cycles of fans that could happen when the controller is switched on or after a defrost when the room air warms the evaporator Functioning if the difference of temperature between the evaporator and the room probes is more than the value of the Fct parameter the fans are switched on With Fct 0 the function is disabled 4 FRONT PANEL COMMANDS SET To display target set point in programming mode it selects a parameter or confirm an operation DEF To starta 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 in programming mode it browses the parameter codes or decreases the displayed value KEY COMBINATIONS a v 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 Compressor enabled ae Flashing Programming Phase flashing with 4 Anti short cycle delay enabled Drip time in progress as fon 5 TEMPERATURE ALARM AND ITS DURATION RECORDING HACCP XR60C signals and records temperature alarms togethe
3. MENU 3 Select the required parameter 4 Press the SET key to display its value Now only the 3 LED is blinking 5 Use or to change its value 6 Press SET to store the new value and move to the following parameter To exit Press SET a 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 5 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 In HIDDEN MENU when a parameter is present in First Level the decimal point is on 1592007250 XR60C GB r1 1 27 10 2003 doc XR60C Installing and Operating Instructions 1592007250 6 6 HOWTO LOCK THE KEYBOARD Q 1 Keep pressed for more than 3 s the UP and DOWN 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 Ifa key is pressed more than 3s the POF message will be displayed 6 7 TO UNLOCK THE KEYBOARD Keep pressed together for more than 3s the a and keys till the Pon message will be displayed 6 8 THE CONTINUOUS CYCLE En When defrost is not in progress it can be activated by holding the a key pressed for about 3 seconds The compressor operates in continuous mode for the
4. ctivation of fans D OF 0 120 min G n after IdF y immed 50 58 rE related to set A Ab absolute Power supply according to the model 12Vac dc 10 24Vac dc 10 230Vac Fs FIN SOE acs SUBD Power absorption 3VA max Display 3 digits red LED 14 2 mm high 50 58 Inputs 2 NTC or PTC probes Digital input free contact 1 30 Relay outputs ot i compressor SPST relay 8 3 A 250Vac or SPST relay 16 6 A 250Vac defrost SPDT relay 8 3 A 250Vac fan SPST relay 8 3 A 250Vac 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 ompressor and fan status when open no normal Fan Fan OFF CPr F C Relative humidity 20 85 no condensing oor Compr OFF F_C Compr amp fan OFF Measuring and regulation range NTC probe 40 110 C 40 230 F ind of probe PTC probe 50 150 C 58 302 F dP1 Room probe display Resolution 0 1 C or 1 C or 1 F selectable dP2 Evaporator probe display Accuracy ambient temp 25 C 0 7 C 1 digit oftware release d 14 CONNECTIONS _Ptb Map code 14 1 XR60C 12VAC DV OR 24 VAC DV i On 7 CE igital input configuration EAL extern alarm bAL lock regulation iP PAL press switch dor door switch dEF defrost LHt disabled Htr heating cooling _did_ a igital input alarm delay 0 255min umber of activ
5. defrost e dSd Start defrost delay 0 99min This is useful when different defrost start times are necessary to avoid overloading the plant 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 e Fdt Drip time 0 120 min time interval between reaching defrost termination temperature and the restoring of the control s normal operation This time allows the evaporator to eliminate water drops that might have formed due to defrost 2 4 Dill Installing and Operating Instructions 8 3 SERIOUS ALARM MODE i1F bAL e dPo First defrost after start up y immediately n after the IdF time e dAF Defrost delay after continuous cycle 0 23 5h time interval between the end of the fast freezing cycle and the following defrost related to it FnC Fans operating mode C n runs with the compressor OFF during defrost o n continuous mode OFF during defrost C Y runs with the compressor ON during defrost o Y continuous mode ON during defrost Fnd Fans delay after defrost 0 255min Time interval between end of defrost and evaporator fans start Fct Temperature differential avoiding short cycles of fans 0 59 C Fct 0 function disabled If the difference of temperature between the ev
6. Dill Installing and Operating Instructions Digital controller with defrost and fans management XR60C 1 2 3 4 5 TEMPERATURE ALARM AND ITS DURATION RECORDING HACCP 6 7 8 CONTENTS GENERAL WARNING PARAMETERS wo 2 4 gt E gt So a gt i O a S m m m O Zi a gt Z o oO 2 z m O fo 2 wn HOW TO USE THE HOTKEY O ALARM SIGNALS PrP WNr f m a a a D gt iw gt i Db oO fo 2 z m fo oO 2 wn OQ pri D gt m 2 T a a PRR RWWWWNNPRP PEE a iw m EH D gt 4 wn m 4 OQ lt D gt m m wn 1 GENERAL WARNING 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 Fit the probe where it is not accessible by the End User The instrument must not
7. aporator and the room probes is more than the value of the Fct parameter the fans are switched on FSt Fans stop temperature 50 50 C 122 F setting of temperature detected by evaporator probe above which fans are always OFF ALARMS e ALC Temperature alarms configuration Ab rE Ab absolute temperature alarm temperature is given by the ALL or ALU values rE temperature alarms 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 0 255 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 DIGITAL INPUT i1P Digital input polarity oP the digital inputis 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 displayed bAL serious alarm CA message is displayed PAL pressure switch alarm CA me
8. ation of pressure switch 0 15 Plo 210 an Sir ntc P tc N a Hidden parameters nc 8 Supply Def Fan Comp 12V Line Dixell s r l Z l Via dell Industria 27 NOTE The compressor relay is 8 3 A or 16 6 A according to the model 32010 Pieve d Alpago BL ITALY 24Vac dc supply connect to the terminals 7 and 8 tel 39 0437 98 33 fax 39 0437 98 93 13 E mail dixell dixell com http www dixell com 1592007250 XR60C GB r1 1 27 10 2003 doc XR60C 4 4
9. be value again 6 2 HOW TO CHANGE THE SETPOINT 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 amp LED starts blinking To change the Set value push the or arrows within 10s To memorise the new set point value push the SET key again or wait 10s PUNE 6 3 HOW TO START A MANUAL DEFROST Push the DEF key for more than 2 seconds and a manual defrost will start 6 4 HOW TO CHANGE A PARAMETER VALUE To change the parameter s value operate as follows 1 Enter the Programming mode by pressing the Set and DOWN key for 3s 4s and 3 start blinking Ti 2 Select the required parameter SE 3 Press the SET key to display its value now only the 3 LED is blinking 4 Use UP or DOWN to change its value 5 Press SET to store the new value and move to the following parameter To exit Press SET UP 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 5 THE HIDDEN MENU The hidden menu Includes all the parameters of the instrument 6 5 1 HOW TO ENTER THE HIDDEN MENU 1 Enter the Programming mode by pressing the Set key for GaAs 3s LED 1 and 3 start blinking 2 When a parameter is displayed keep pressed the Sett for D more than 7s The Pr2 label will be displayed immediately followed from the HY parameter NOW YOU ARE IN THE HIDDEN
10. f when the temperature reaches the set point value again Tempera SET HY A eae SET ComprA U E 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 Two defrost modes are available through the tdF parameter defrost through electrical heater tdF EL and hot gas defrost tdF in Other parameters are used to control the interval between defrost cycles IdF its maximum length MdF and two defrost modes timed or controlled by the evaporator s probe P2P 1592007250 XR60C GB r1 1 27 10 2003 doc XR60C 1592007250 At the end of defrost dripping time is started its length is set in the FSt parameter With FSt the dripping time is disabled 3 3 CONTROL OF EVAPORATOR FANS 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 0_n fans will run even if the compressor is off and not run during defrost After defrost there is a timed fan delay allowing for drip time set by means of the Fnd parameter 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 An additional parameter FSt provides the setting of temperature detected by the evaporator probe above which the fans are always OFF This is used to make sure
11. n 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 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 3 Push SET key and the End will stop flashing 4 Turn OFF the instrument remove the Hot Key then turn itON again NOTE the Err message is displayed for failed programming In this case push again a key if you want to restart the upload again or remove the Hot key to abort the operation 3 4 1592007250 14 2 XR60C 120VAC OR 230 VAC Dill Installing and Operating Instructions 11 2 HOW TO PROGRAM AN INSTRUMENT USING A HOT KEY DOWNLOAD 1 2 Turn OFF the instrument Insert a programmed Hot Key into the 5 PIN receptacle and then turn the Controller ON 3 Automatically the parameter list of the Hot Key is downloaded in
12. obe alarms P1 and P2 start some seconds after the fault in the related probe they automatically stop 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 Housing self extinguishing ABS Case XR60C frontal 32x74 mm depth 60mm Mounting XR60C panel mounting in a 71x29mm panel cut out Protection IP 20 Frontal protection IP 65 with frontal gasket RG C optional Connections Screw terminal block lt 2 5 mm wiring m m efrost type EL l heater in hot gas efrost termination temperature 50 50 C nterval between defrost cycles Maximum length for defrost tart defrost delay isplaying during defrost AX display delay after defrost tdF ate IdF MdF _dSd _dFd dAd Fat Draining time _dPo dAF _Fne_ Fnd FSt 2 1 120 ore 46 0 0 255 min 0 255 min w So irst defrost after startup efrost delay after fast freezing an operating mode an delay after defrost 0 23he 50 C n o n C y 0 Y an 0 255min 3 1 ifferential of temperature for forced 0 50
13. pressor and fan 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 1592007250 XR60C GB r1 1 27 10 2003 doc XR60C 1592007250 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 START DEFROST i1F dFr It starts a defrost if there are the right conditions After the defrost is finished the normal regula
14. r with their duration and max value reached See drawing Ex High temperature alarm Temperature Max Temperature ALu High temp alarm Set ALL Low temp alarm gt Time Alarm duration 1 4 Dwell 5 1 HOWTO 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 for 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 HOWTO 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 HOWTO 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 pro
15. ssage is displayed dor door switch function dEF activation of a defrost cycle LHt not enabled 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 and fan status when open door no normal Fan Fan OFF CPr Compressor OFF F_C Compressor and fan OFF OTHER PbC Type of probe it allows to set the kind of probe used by the instrument PbC PBC probe ntC NTC probe dP1 First probe display dP2 Second probe display rEL Software release for internal use Ptb Parameter table code readable only 8 DIGITAL INPUT The free contact digital input is programmable in five different configurations by the i1F parameter 8 1 DOOR SWITCH INPUT i1F dor It signals the door status and the corresponding relay output status through the ode parameter no normal any change Fan Fan OFF CPr Compressor OFF F_C Com
16. tays 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 0 255 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 0 255 min time during which the compressor is OFF in case of faulty thermostat probe With COF 0 compressor is always active 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 e Lod Display select which probe is displayed by the instrument P1 Thermostat probe P2 Evaporator probe DEFROST tdF Defrost type EL electrical heater in hot gas dtE Defrost termination temperature 50 50 C 58 122 F Enabled only when EdF Pb sets the temperature measured by the evaporator probe which causes the end of 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
17. time set through the Cet 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 1 255 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 F SET Sets the minimum acceptable value for the set point e US Maximum set point SET 110 C SET 230 F Set the maximum acceptable value for set point Ot Thermostat probe calibration 12 0 12 0 C 120 120 F allows to adjust possible offset of the thermostat probe P2P Evaporator probe presence n not present the defrost stops by time y present the defrost stops by temperature e OE Evaporator probe calibration 12 0 12 0 C 120 120 F allows to adjust possible offset of the evaporator 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 s
18. tion will restart only if the digital input is disabled otherwise the instrument will wait until the MdF safety time is expired 8 6 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 7 DIGITAL INPUTS POLARITY The digital input polarity depends on the i1P parameter i1P CL the inputis activated by closing the contact i1P OP the input is activated by opening the contact 9 INSTALLATION AND MOUNTING Instrument XR60C shall be mounted on vertical panel in a ee PANEL 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 mm2 Before connecting cables make sure the power supply complies with the instrument s requirements Separate the probe cables from the power supply cables from the outputs and the power connections Do not exceed the maximum current allowed on each relay i
19. to the Controller memory the doL message is blinking followed a by flashing End 4 After 10 seconds the instrument will restart working with the new parameters 5 Remove the Hot Key 8 3 A 7 NOTE the message Err is displayed for failed programming In this case turn the unit a off and then on if you want to restart the download again or remove the Hot key to abort the operation 12 ALARM SIGNALS ge Cause Outputs PL Room probe failure Compressor output according to par Con and COF NOTE The compressor relay is 8 3 A or 16 6 A according to the model 120Vac supply connect to the terminals 6 and 7 Label Name Range CIF Set Setpoint sus f US Maximum setpoint SETS1N0 C SET 230 F 110230 Evaporator probe failure Defrost end is timed HA Maximum temperature alarm Outputs unchanged LA dA EA CA A F OF Thermostat probe calbraion arema f o P2P Evaporator probe presence n not present Y pres_ y OE Evaporator probe calibration 12 12 c 120 120F_ _ 0 OdS Outputs delay atstartup 25S min 0 CCt Continuos cycle duration 0 0 240h 00 ompressor ON time with faulty probe ompressor OFF time with faulty probe CF Temperature measurement unit LL tse E O mim EY oll nn spol Sal C rES Resolution in integer dE dec point d abe depp Qa 12 1 ALARM RECOVERY Pr
Download Pdf Manuals
Related Search