XR760C - Emerson Climate Technologies
Contents
1. XR760C 5 0 Pri 2 0 Pri 30 0 Pr2 20 0 Pr2 0 Pr2 1 Pri 15 Pr2 30 Pr2 c Pr2 dE Pri P1 Pr2 rE Pri RTC Pr2 0 Pr2 8 0 Pri 6 Pr 30 Pr it Pr2 30 Pr2 0 Pr2 0 Pr2 no Pr2 O n Pr2 10 Pr2 2 0 Pr2 2 0 Pr2 15 Pr2 1 3 Pr2 30 Pr2 no Pr2 15 Pr2 yES Pr2 0 Pr2 P1 Pr2 0 0 Pri 0 0 Pr2 0 0 Pr2 yES Pr2 no Pr2 P1 Pr2 0 Pr2 FAn Pr2 cL Pr2 dor Pr2 5 Pr2 F rtc rtc z rtc rtc 718 Dwell Operating Instructions XR720C Par Meaning o O Range Mon Month S S 1 12 0 99 i Hd1 First weekly holiday Sun SAt nu nu Hd2 Second weekly holiday Sun SAt nu nu Hd3 Third weekly holiday Sun SAt nu nu ENERGY SAVING TIMES ILE Energy Saving cycle start during workdays 0 23h 50 min 0 0 dLE Energy Saving cycle length during workdays 0 24h 00 min 0 0 ISE Energy Saving cycle start on holidays 0 23h 50 min 0 0 IdSE Energy Saving cycle length on holidays 0 24h 00 min 0 0 IHES Temperature increase during the Energy Saving cycle 30 30 C 54 54 F 0 DEFROST TIMES ILd1_ 1 workdays defrost start 0 23h 50 min nu 6 0 IL d2_ 2 workdays defrost start 0 23h 50 min nu 13 0 IL d3_ 8 workdays defrost start 0 23h 50 min nu 21 0 Ld4 4 workdays defrost start 0 23h 50 min nu nu Ld4 IL d5_ 5 workdays defrost start 0 23h 50 min nu nu IL d6 6 workdays defrost start 0 23h 50 min nu nu lLd7 72. Only if the internal real time clock is still working the black out alarm is signalled At next power on the black out alarm is given only if the temperature is higher than maximum alarm value In this case the following is recorded 1 Power off time Date and time 2 Poweron time Date and time 3 Maximum temperature reached Date and time XR720C XR740C XR760C 1 8 Dwell Operating Instructions 1592014010 5 THE DISPLAY Temperature 4 a XR700C From To W Menu Time icons The display is divided in 3 parts Upper left part to see the temperature upper display Lower left part to see the time lower display Right part icons area 5 1 THE KEYBOARD SET To display and modify target set point in programming mode it selects a parameter or confirm an operation HACCP UP To enter the HACCP menu In programming mode it browses the parameter codes or increases the displayed value By holding it pressed for 3s the defrost cycle is started HACCP DOWN To enter the HACCP menu In programming mode it browses the parameter codes or decreases the displayed value M To enter the Menu By holding it pressed for 3s the Clock menu is entered KEY COMBINATIONS a Tolock and unlock the keyboard SET To enter the programming mode SET To exit the programming mode 5 2 SYMBOLS ON THE FRONTAL FRAME FUNCTION MEANING O O fae ON The compres
3. 1 Enter the Programming mode 2 Select the required parameter with or 3 Press the SET key the value start blinking 4 Use or 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 new programming is stored even when the procedure is exited by waiting the time out 9 6 HOWTO LOCK THE KEYBOARD Keep the and keys pressed together for more than 3 s the a and keys 2 The POF message will be displayed and the keyboard is locked At this point it is only possible to view the set point or enter the HACCP menu 9 7 TO UNLOCK THE KEYBOARD Keep the a and keys pressed together for more than 3s till the POn flashing message appears XR720C XR740C XR760C 3 8 10 1 THE COMPRESSOR Tempera 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 In case of fault in the thermostat probe the start and stop of the compressor are timed through parameters COn and COF 10 2 DEFROST XR720C Defrost is performed through a simple stop of the compressor Beginning of defrost cycles is set by the Ld1
4. workdays defrost start 0 23h 50 min nu nu IL d8_ 8 workdays defrost start 0 23h 50 min nu nu ISd1_ i holiday defrost start 0 23h 50 min nu 6 0 ISd2_ 2 holiday defrost start 0 23h 50 min nu 13 0 ISd3_ 8 holiday defrost start 0 23h 50 min nu 21 0 Sd4 4 holiday defrost start 0 23h 50 min nu nu ISd5_ 5 holiday defrost start 0 23h 50 min nu nu ISd6_ 6 holiday defrost start 0 23h 50 min nu nu 0 23h50 min nu 0 23h 50 min nu ISd7_ 7 holiday defrost start ISd8_ 8 holiday defrost start Other o Language selection for iPrint ITA ltalian ENG English PLA FRA France dEU German Pr2_ Access parameterlist_ rtc rtc rtc rtc rtc rtc rtc rtc rtc rtc rtc rtc rte rtc rtc rtc rte rtc rtc rtc ttc rtc rtc rtc rtc rtc Pr2 Pri Pri Pr2 Pr2 Pri XR740C 13 0 21 0 nu nu nu nu nu 6 0 13 0 21 0 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 6 0 Pr2 13 0 Pr2 21 0 Pr2 nu Pr2 nu Pr2 nu Pr2 nu Pr2 nu Pr2 6 0 Pr2 13 0 Pr2 21 0 Pr2 nu Pr2 nu Pr2 nu Pr2 nu Pr2 nu Pr2 tA Pr2 Pr2 Pr2 Pr2 Pr2 Pri 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 XR760C rtc rtc rtc rtc rtc Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 P
5. Ld8 parameters during the working days and Sd1 Sd8 during the holidays while its length is controlled by parameter MdF XR740C XR760C Two defrost modes are available through the tdF parameter tdF rE defrost with electrical heater tdF in or hot gas The defrost interval is control by means of parameter EdF ttc beginning of defrost cycles is set by the Ld1 Ld8 parameters during the working days and Sd1 Sd8 during the holidays in the defrost is made every IdF time d 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 Fdt parameter 10 3 CONTROL OF EVAPORATOR FANS ONLY FOR XR760C 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 continuously but not 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 0 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 can be used to make sure circulation of air only if his temperature is lower than set in FSt 11 PARAMETER LIS
6. XR720C XR740C XR760C GB r1 0 10 06 02 doc Dwell Operating Instructions 1592014010 10 CONTROLLING LOADS Lod Local display select which probe is displayed by the instrument P1 Thermostat probe P2 Evaporator probe only for XR740C XR760C P2 Third probe DEFROST tdF Defrost type only for XR740C XR760C rE electrical heater Compressor OFF in hot gas Compressor and defrost relays ON EdF Defrost mode rtc defrost according to the Ld1 Ld8 parameters during the working days and Sd1 Sd8 during the holidays in interval mode The defrost starts when the time Idf is expired Sd Smartfrost mode The time IdF interval between defrosts is increased only when the compressor is running even non consecutively SdF Set point for SMARTDEFROST only for XR740C XR760C 30 30 C 22 86 F evaporator temperature which allows the IdF counting interval between defrosts in SMARTFROST mode dtE Defrost termination temperature only for XR740C XR760C 50 0 110 0 C 58 230 F Enabled only when the evaporator probe is present sets the temperature measured by the evaporator probe which causes the end of defrost IdF Interval between defrosts 1 120h Determines the time interval between the beginning of two defrost cycles MdF Maximum duration of defrost 0 255 min When P2P no no evaporator probe it sets the defrost duration when P2P yES defrost end based on temperature it sets the maximum len
7. set point and fan regulation set point always positive ALd Temperature alarm delay 0 255 min time interval between the detection of an alarm condition and the corresponding alarm signalling dAO Delay of temperature alarm at start up Omin 23h 50min time interval between the detection of the temperature alarm condition after the instrument power on and the alarm signalling EdA Alarm delay at the end of defrost 0 255 min Time interval between the detection of the temperature alarm condition at the end of defrost and the alarm signalling dAE Temperature alarm enabling during the defrost no temperature alarms disable during the defrost YES temperature alarm enabled during the defrost doA Open door alarm delay 0 255 min delay between the detection of the open door condition and its alarm signalling the flashing message dA is displayed bLE Black out alarm enabling no black out alarm disabled at power on the instrument follow the dAo time in alarm signalling yES black out alarm enabled the instrument log possibly black outs 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 With nPS 0 or 1 the instrument is locked as soon as a the digital input is enabled ALPAlarm probe setting P1 thermostat
8. 0 24h 00 min Sets the duration of the Energy Saving cycle on workdays ISE Energy Saving cycle start on holidays 0 23h 50 min dSE Energy Saving cycle length on holidays 0 24h 00 min HESTemperature increase during the Energy Saving cycle 30 30 C 54 54 F sets the increasing value of the set point during the Energy Saving cycle TO SET DEFROST TIMES Ldi Ld8 Workday defrost start 0 23h 50 min nu These parameters set the Operating Instructions 1592014010 dP1 First probe display dP2 Second probe display XR740C XR760C dP3 Third probe display Ptb Parameter table read only it shows the original code of the dixelL parameter map rEL Release software read only Software version of the microprocessor Pr2 Access to the protected parameter list read only 12 DIGITAL INPUT The instrument can support 1 free contact digital input Its functioning is programmable in seven different configurations by the I2F parameter 12 1 DOOR SWITCH INPUT i2F 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 Compressor and fan OFF Since the door is opened after the delay time set through parameter dOA the alarm output is enabled and the display shows the message dA The alarm stops as soon as the external digital input is disabled again 12 2 CONFIGURABLE INPUT
9. Divell XR720C XR740C XR760C Refrigeration controllers with HACCP integrated features Contents GENERAL WARNING GENERAL DESCRIPTION FIRST INSTALLATION HACCP FUNCTIONS THE DISPLAY DISPLAY ALARM LIST HACCP MENU FUNCTION MENU OTHER FUNCTIONS OF THE KEYBOARD 10 CONTROLLING LOADS 11 PARAMETER LIST 12 DIGITAL INPUT 13 INSTALLATION AND MOUNTING 14 ELECTRICAL CONNECTIONS 15 USE OF THE PROGRAMMING HOT KEY 16 ALARM SIGNALS 17 TECHNICAL DATA 18 WIRING CONNECTIONS 19 DEFAULT SETTING VALUES 1 GENERAL WARNING a ZN eee eae READ BEFORE USING THIS MANUAL 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 Check the application limits before proceeding CONOARWN gt MNHWDDDDODNAN SPW WMD a a TA 2 Aux ETY 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 op
10. GENERIC ALARM i2F 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 12 3 CONFIGURABLE INPUT SERIOUS ALARM MODE i2F bAL When the digital input is activated the unit will wait for did delay before signalling the BAL alarm message The relay outputs are switched OFF The alarm will stop as soon as the digital input is de activated 12 4 CONFIGURABLE INPUT PRESSURE SWITCH i2F PAL If during the interval time set by did parameter the pressure switch has reached the number of activation of the nPS parameter the PAL pressure alarm message will be displayed The compressor and the regulation are stopped When the digital input is ON the compressor is always OFF To restart the normal functioning the controller HAS TO BE SWITCHED OFF and ON AGAIN 12 5 CONFIGURABLE INPUT START DEFROST i2F dFr It executes 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 12 6 CONFIGURABLE INPUT ENERGY SAVING i2F ES The Energy Saving function allows to change the set point value as the result of the SET HES parameter sum This function is enabled until the digit
11. High temperature alarm Lot 110 C 10 0 10 0 10 0 PASS Secuiyende va 0 0 0 19 2 PARAMETER LIST Range REGULATION Set point LS US Differential Minimum set point Maximum set point Outputs activation delay at start up nti short cycle delay ompressor ON time with faulty probe ompressor OFF time with faulty probe ind of action ISPLAY emperature measurement unit Resolution integer decimal point od_ Local display EFROST efrost type efrost mode et point for SMART DEFROST Defrost termination temperature 1 Evaporator dF interval between defrost cycles MaF Maximum length for 1 defrost JdFd Displaying during defrost Ad MAX display delay after defrost aSa Defrost delay after calling Fa Drainingtime o o PO First defrost after statup FANS SSCS Fna Fans delay after deros Fst Fans stop temperature SOS ALARMS SSCS AFH Temperature alarm and fan diferenta a0 Delay of temperature alarm atstatup Eaa Alarm delay at the end of defrost AE Temperat alarm enabled during defrost JOA Open door alarm delay SSCS MPS Pressure switch activation number ANALOGUE INPUTS SSS Ot Thermostat probe calibration JOE Evaporator probe calibration 03 Auxiliary probe calibration P2P Evaporator probe presence P3P_ Auxilary probe presence SSS Por Regulation probe SSS HES Temperature increase during the Energy Saving cycle _ DIGITALINPUTS Oooo Ode Open door control SSS i2P Confi
12. P key 2 The last alarm happened is showed on the display The kind of alarm is described by the following codes XR700C Hit High temperature alarm Lot Low temperature alarm e blou black out alarm e gEAL digital input alarm 3 Pushing again the HACCP key the other alarm are displayed starting from the oldest 4 To see when the alarm happened its duration and the critical temperature push the SET key 5 The starting time e date of the alarm are showed alternatevely and the Clock and Date icons are turned on together with the from message 6 Pushing again the HACCP a key end time and date of teh alarm are showed together with the to message XR700C Push again the HACCP a key the critical temperature reached is showed together with the time and the date The icons of alarm and critical temperature are flashing 7 2 EXIT Pe Push the M menu key XR720C XR740C XR760C 218 Dwell 8 FUNCTION MENU Operating Instructions 1592014010 It includes all the main functions controlled by the instrument When it s entered the menu message is on rSt to erase all the logged alarms It can be protected by security code LOt low temperature alarm value It can be protected by security code Hit high temperature alarm value It can be protected by security code ir infrared command PASS for enabling modifying end disabling the security
13. T REGULATION Hy Differential 0 1 25 5 C 1 45 F Intervention differential for set point always positive Compressor Cut IN is Set Point Plus Differential Hy Compressor Cut OUT is when the temperature reaches the set point LS Minimum set point limit 50 0 C SET 58 F SET Sets the minimum acceptable value for the set point US Maximum set point limit SET 110 C SET 230 F Set the maximum acceptable value for set point OdSOutputs activation delay at start up 0 255 min 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 Light can work AC Anti short cycle delay 0 30 min interval between the compressor stop and the following restart 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 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 CH Type of action only for XR720C CL cooling Ht heating DISPLAY CF Temperature measurement unit C Celsius F Fahrenheit When the measurement unit is changed the SET point and the values of some parameters have to be modified rES Resolution for C in 1 C de 0 1 C allows decimal point display dE 0 1 C in 1 C 1591014010
14. al input is activated 12 7 CONFIGURABLE INPUT REMOTE ON OFF i2F onF This function allows to switch ON and OFF the instrument 12 8 CONFIGURABLE INPUT HOLIDAY FUNCTION i2F HDF In Holiday function Energy saving and defrost cycles follow holiday times Sd1 Sd8 12 9 DIGITAL INPUTS POLARITY The digital inputs polarity depends on I2P parameter CL the digital input is activated by closing the contact OP the digital input is activated by opening the contact 13 INSTALLATION AND MOUNTING PANEL Instruments shall be mounted on panel in a 29x71 mm hole and fixed using the special brackets supplied To obtain an IP65 protection grade use the front panel rubber gasket mod RG C as shown in figure beginning of the eight programmable defrost cycles during workdays Ex When BRACKET Ld2 12 4 the second defrost starts at 12 40 during workdays FUSH TO RELEASE Sd1 Sd8 Holiday defrost start 0 23h 50 min nu These parameters set the beginning of the eight programmable defrost cycles on holidays Ex When Sd2 3 4 the second defrost starts at 3 40 on holidays N B To disable a defrost cycle set it to nu not used Ex If Ld6 nu the sixth defrost cycle is disabled OTHER l PLA Language selection for the iPrint device itA Italian EnG English FrA GASKET France dEu German 1591014010 XR720C XR740C XR760C GB r1 0 10 06 02 doc XR720C XR740C XR760C 5 8 Drell The temperature range a
15. code 8 1 HOWTO ENTER THE FUNCTION MENU om 8 2 HOWTO EXIT THE FUNCTION MENU Ge 8 3 SECURITY CODE INPUT Push and release the M menu key Push and release the M menu key The functions contained in the Function menu can be protected by security code If the security code is required the lower display shows PASS message while the upper display shows 000 flashing 2 Use the UP key to input the security code in the flashing digit 3 Confirm the figure by pressing SET 4 If the security code is correct the function is enabled otherwise the security code input process restarts from the beginning NOTE TO EXCLUDE THE SECURITY CODE SET IT TO ZERO 8 4 rSt FUNCTION IT ERASES ALL THE LOGGED ALARMS 1 Enter the Function Menu 2 Select the rSt function 3 Push the SET key if the security code is not required immediately the logged alarm will be erased otherwise enter the security code 4 If the security code is right the logged alarm are erased and the instrument reverts to room temperature display mode 8 5 Hit E LOt FUNCTIONS HOW TO SET THE MAX E MINIMUM TEMPERATURE ALARMS 1 Enter the Function Menu 2 Select the LOt or HIt function then push the SET key 3 Enter the security code if required 4 Modify the alarm value by means of or keys and push the SET key to confirm the new value HOW TO SET OR MODIFY THE SECURITY CODE To change the securi
16. emove the Hot Key plug in the TTL serial cable then turn it ON again At the end of the data transfer phase the instrument displays the following messages end for right programming The instrument starts regularly with the new programming err 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 15 2 UPLOAD FROM THE INSTRUMENT TO THE HOT KEY 1 When the unit is ON insert the Hot key and push 2 key the uPL message appears Push SET key to start the UPLOAD the uPL message is blinking 3 Turn OFF the instrument remove the Hot Key plug in the TTL serial cable then turn it ON again At the end of the data transfer phase the instrument displays the following messages end for right programming err for failed programming In this case push SET key if you want to restart the programming again or remove the not programmed Hot key N 16 ALARM SIGNALS Message Thermostat probe failure Alarm output ON Compressor output according to parameters COn and COF Evaporator probe failure only for XR740C XR760C pq py Alarm output ON Other outputs unchanged Auxiliary probe failure Alarm output ON Other outputs unchanged AL PAL rtc Real time clock alarm Alarm output ON Other outputs unchanged Defros
17. ened 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 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 The XR700 series has be designed to satisfy the HACCP requirements Each instrument has the possibility to record the last 20 alarm conditions that could happen in the normal refrigerated applications Model XR720C format 32 x 74 mm is a thermostat with off cycle defrost designed for refrigeration applications at normal temperature It provides a relay output to drive the compressor and 2 NTC probe input Model XR740C 32x74 mm format is a microprocessor based controller suitable for applications on medium or low temperature refrigerating units It is provided with two relay outputs to control compressor and defrost which can be either electrical or reverse cycle hot gas It is also provided with 3 probe inputs NTC one for temperature control the other to be located onto the evaporator to control the defrost termination temperature The XR760C model 32x74 format
18. gth for defrost dFd Display during defrost rt real temperature it temperature reading at the defrost start Set set point dEF dEF label dEG dEG label dAd Defrost display time out 0 255 min Sets the maximum time between the end of defrost and the restarting of the real room temperature display dSd Start defrost delay only for XR740C XR760C 0 99min This is useful when different defrost start times are necessary to avoid overloading the plant Fdt Drain down time only for XR740C XR760C 0 60 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 dPO First defrost after start up yES Immediately no after the IdF time FANS only for XR760C FnC Fan operating mode C n running with the compressor OFF during the defrost C y running with the compressor ON during the defrost O n continuous mode OFF during the defrost O y continuous mode ON during the defrost Fnd Fan delay after defrost 0 255 min The time interval between the defrost end and evaporator fans start FSt Fan stop temperature 50 110 C 58 230 F setting of temperature detected by evaporator probe above which the fan is always OFF ALARMS AFHTemperature alarm and fan differential 0 1 25 5 C 1 45 F Intervention differential for temperature alarm
19. gurable digital input polary Digital input configuration aia Digia nput alarm delay TIME AND WEEKLY HOLIDAYS Hur Curenthour SSS Min Current minute SSS Uaa Current day ofhewek 1591014010 XR720C XR740C XR760C GB r1 0 10 06 02 doc y C 5 mT ol lololo PI OlO no al 0 1 25 5 C 1 45 F 50 0 C SET 58 F SET SET 110 C SET 230 F 0 255 min 0 30 min 0 255 min 0 255 min CL cooling Ht Heating C F in de P1 P2 P3 rE in rtc In Sd 30 30 C 22 86 F 50 0 110 C 58 230 F 1 120h 0 255 min rt it SEt dEF dEG 0 255 min 0 255 min 0 60 min no yES C n C y O n O y 0 255 min 50 0 110 C 58 230 F 0 1 25 5 C 1 45 F 0 255 min 0 23h 50 min 0 255 min yES no 0 254 min nu yES no 0 15 P1 P2 P3 12 0 12 0 C 21 21 F 12 0 12 0 C 21 21 F 12 0 12 0 C 21 21 F no yES no yES P1 P2 P3 30 30 C 54 54 F no Fan CPr F_C CL OP EAL bAL PAL dFr AUS ES OnF dor 0 255 min 0 23 0 59 Sun SAt 1 31 yES no cL dor XR720C XR740C XR760C XR720C C Pr2 dE Pri Pi Pr2 rtc rtc rtc rtc XR740C yES no cL dor Pri Pri Pr2 Pr2 Pr2 Pri Pr2 Pr2 C Pr2 dE Pri P1 Pr2 rE Pri RTC Pr2 O Pr2 8 0 Pri 6 Pri 30 Pri it Pr2 30 Pr2 0O Pr2 0 Pr2 Pr2 rtc rtc rtc rtc
20. h 1 12 yEA year 00 99 Hd1 Hd2 Hd3 days to which apply the holiday defrost nu Sun Mon tuE UEa tHu Fri SAt 3 2 HOW TO RESET THE BLACK OUT ALARM AT FIRST INSTALLATION AND EVERY TIME THE INSTRUMENT IS VOLUNTARILY TURNED OFF AND ON Press any key until on the lower display the Hur label appears and on the upper one the time Press the SET key the time start flashing Adjust the time with the and keys Confirm the value by pressing the SET key the following parameter will be displayed i mo kig If the clock of the instrument is adjusted and the black out alarm Aa g signalling is enabled par bLE yES at power on the PUSH SET Haccp message is displayed if the temperature is higher than the high temperature value par Hit into Menu What to do 1 Push the SET key the delay of temperature alarm at start up start running par dAo and the black out alarm is not logged 4 HACCP FUNCTIONS 4 1 THE HACCP ALARMS MANAGED Maximum temperature alarm Minimum temperature alarm Digital input alarm Black out alarm 4 2 FOR EACH TEMPERATURE ALARM THE FOLLOWING IS RECORDED Starting time date and time End time date and time Maximum or minimum temperature reached during the alarm phase When this maximum temperature was reached date and time Pe CONS 4 3 FOR EACH DIGITAL INPUT ALARM THE FOLLOWING IS RECORDED 1 Starting time date and time 2 End time date and time 4 4 BLACK OUT ALARM
21. is a microprocessor based controller 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 the evaporator and fans It is also provided with three NTC probe inputs one for temperature control one to control the defrost end temperature of the evaporator and the third optional for the display There are 1 digital inputs free contact configurable by parameter By internal real time clock it is memorised when an alarm happened and it is also possible to programme up to eight daily defrost cycles divided into holidays and workdays A Day and Night function with two different set points is fitted for energy saving 1591014010 XR720C XR740C XR760C GB r1 0 10 06 02 doc Operating Instructions 1592014010 3 FIRST INSTALLATION At the first installation it s required the following 1 set the time 2 reset possibly black out alarm 3 1 HOWTO SET THE CLOCK If at power on onto the upper display the message appears rtC alternate with the temperature it means that the clock has to be regulated How to do Ga 1 Ge 5 Repeat the operations 2 3 and 4 on the other real time clock parameters Min minutes 0 60 UdA day of the week Sun Sunday Mon Monday tuE Thursday UEd Wednesday tHu Thursday Fri Friday SAt Saturday dAy day of month 0 31 Mon mont
22. ise the new set point value push the SET key again or wait 15s 9 2 HOWTO START A MANUAL DEFROST Push the key for more than 2s ee ow m 9 3 HOWTO ENTER THE PR1 PARAMETER LIST To change the parameter s value operate as follows 1 Enter the Programming mode by pressing the Set and DOWN key for 3s 4 and amp start blinking 2 Select the required parameter The name of the parameter is on the lower display its value on the upper 3 Press the SET key the value of the parameter will start blinking 4 Use UP or DOWN to change the 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 PAs 9 4 TO ENTER IN PARAMETERS LIST PR2 To access parameters in Pr2 Enter the Pr1 level Select Pr2 PAS parameter and press the SET key The flashing value 000 is displayed If the password is disabled press the SET key otherwise use a or to input the security code and confirm the figure by pressing SET key wn NOTE each parameter in Pr2 can be removed or put into Pri user level by pressing SET When a parameter is present also in Pr1 decimal point of the lower display is on 9 5 HOW TO CHANGE THE PARAMETER VALUE
23. llowed 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 14 ELECTRICAL CONNECTIONS The instrument are provided with screw terminal block to connect cables with a cross section up to 2 5 mm Heat resistant cables have to be used 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 in case of heavier loads use a suitable external relay 14 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 probe away from air streams to correctly measure the average room temperature 15 USE OF THE PROGRAMMING HOT KEY The unit can UPLOAD or DOWNLOAD the parameter list from its own E2 internal memory to the Hot Key and vice versa 15 1 DOWNLOAD FROM THE HOT KEY TO THE INSTRUMENT 1 Turn OFF the instrument insert the Hot Key and then turn the instrument ON 2 Automatically the parameter list of the Hot Key is downloaded into the memory the doL message is blinking After 10 seconds the instrument will restart working with the new parameters 3 Turn OFF the instrument r
24. probe is used for temperature alarms signalling XR720C XR740C XR760C 4 8 Dwell P2 evaporator probe is used for temperature alarms signalling only for XR740C XR760C P3 third probe is used for temperature alarms signalling Ot Thermostat probe calibration 12 0 12 0 C 21 21 F allows to adjust possible offset of the thermostat probe OE Evaporator probe calibration only for XR740C XR760C 12 0 12 0 C 21 21 F allows to adjust possible offsets of the evaporator probe 03 Third probe calibration 12 0 12 0 C 21 21 F allows to adjust possible offsets of the third probe P2P Evaporator probe presence only for XR740C XR760C no not present the defrost stops only by time yES present the defrost stops by temperature and time P3P Auxiliary probe presence no not present yES present Pbr Regulation probe selection P1 Thermostat probe P2 Evaporator probe only for XR740C XR760C P3 Auxiliary probe HESTemperature increase during the Energy Saving cycle 30 30 C 54 54 F sets the increasing value of the set point during the Energy Saving cycle DIGITAL INPUTS odc Compressor and fan status when open door no normal Fan Fan OFF CPr Compressor OFF fan OFF i2P Configurable digital input polarity CL the digital input is activated by closing the contact OP the digital input is activated by opening the contact i2F Digital input operating mode configure the digital input f
25. r2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pr2 Pri 1592014010 htto www dixell com 1591014010 XR720C XR740C XR760C GB r1 0 10 06 02 doc XR720C XR740C XR760C 8 8
26. sor is running oe FLASHING Programming Phase flashing with LED f Anti short cycle delay enabled JON o The defrost is enabled FLASHING Drip time or delay time in progress 5 3 THE ICONS Icon Meaning C Celsius degree oF Fahrenheit degree Hj High temperature alarm Ld Low temperature alarm 4 Critical temperature minimum or maximum minima A _ Digital input alarm a Alarm list Clock E Date Ww Infrared transmission Menu It signals The function menu From Start time To End time 1591014010 XR720C XR740C XR760C GB r1 0 10 06 02 doc 6 DISPLAY 6 1 STANDARD CONDITIONS DISPLAY XR700C At standard conditions the instrument displays Upper display temperature an relative measurement unit Lower display time and clock symbol 6 2 DISPLAY DURING A TEMPERATURE ALARM i6c dF 18 As soon as the alarm temperature values max or minimum are exceeded the instrument displays Upper display real temperature Lower display difference between real temperature and set point preceded by the dF label difference Icons Area during the pre alarm phase ALd delay alarm symbols are flashing Hj high temperature L low temperature At the end of pre alarm time alarm symbols are on Hj high temperature L4 low temperature 7 ALARM LIST HACCP MENU 7 1 HOWTO SEE THE ALARMS 1 Pushthe HACC
27. ts according to par IdF The alarm message is displayed until the alarm condition is recovery All the alarm messages are showed alternating with the room temperature except for the P1 which is flashing p3 JA EAL 16 1 SILENCING BUZZER Once the alarm signal is detected the buzzer is silenced by pressing any key 16 2 ALARM RECOVERY Probe alarms P1 probe faulty P2 and P3 they automatically stop 10s after the probe restarts normal operation Check connections before replacing the probe Door switch alarm dA stop as soon as the door is closed External alarms EAL BAL stop as soon as the external digital input is disabled PAL alarm is recovered by switching OFF the instrument 17 TECHNICAL DATA Housing self extinguishing ABS Case frontal 32x74 mm depth 60mm Mounting panel mounting in a 71x29mm panel cut out Protection IP20 1591014010 XR720C XR740C XR760C GB r1 0 10 06 02 doc Operating Instructions 1592014010 Frontal protection IP65 with frontal gasket RG C optional Connections Screw terminal block lt 2 5 mm heat resistant wiring Power supply 230Vac opt 110Vac 10 Power absorption 3VA max Inputs 3 NTC probes Relay outputs compressor SPST relay 8 3 A 250Vac or defrost relay SPDT 8 3 A 250Vac XR740C XR760C fans relay SPST 8 3 A 250Vac XR760C Other output Alarm buzzer Kind of action 1B Pollution grade normal Sof
28. tware class A Data storing on the non volatile memory EEPROM Operating temperature 0 60 C Storage temperature 25 60 C Relative humidity 20 85 no condensing Measuring and regulation range 40 110 C 58 230 F Resolution 0 1 C or 1 C or 1 F selectable Accuracy ambient temp 25 C range 40 50 C 40 122 F 0 5 C 1 digit 18 WIRING CONNECTIONS BE o i we 21122 23 g XR 720C zje xio 8 3 A Sle 1 2 3 6 7 10 11 J A NC Power supply Comp 230Vac Line Bebe Power supply 115Vac connect to 6 7 terminals or i Pee 21 2223 ii XR740C gle 10 80A 8 3 A imi g le 1 23 5 6 7 8 9 10 11 wNC g ER A Def Comp 230Vac N N R Line age Ba Power supply 115Vac connect to 6 7 terminals or i a 21122 23 T XR 760C zle 10 EBA BBA 88A lt jo Sle T re D o s 1 2 3 4 5 6 7 8 9011 ah NC g LEM A Def Comp 230Vac N N ore R Lre Fan Soge an Power supply 115Vac connect to 6 7 terminals XR720C XR740C XR760C 6 8 Dill Operating Instructions 1592014010 19 CONNECT TO 6 7 TERMINALS DEFAULT SETTING VALUES 19 1 FUNCTION MENU abe flean f Range ORTAC XR7 0C_ XR760C Hit
29. ty code the old security code has to be enter before setting the new one 1 Enter the Function Menu 2 Select the PASS function on the lower display the upper display shows the oLd message 3 Push the SET key If the security code is DISABLED equal to zero pass to the point 6 4 The upper display shows 000 flashing 5 Enter the current security code and confirm it by pressing the SET key 6 The upper display shows nEU message Push the SET key to enter the function 7 Use UP or DOWN to input the security code in the flashing digits 8 Confirm the figure by pressing SET 9 The Upper display will flash for few seconds and the following function will be displayed 8 6 ir FUNCTION INFRARED TRANSMISSION To download the logged alarms from the instrument to the mobile device iPrint act as follow 1 Enter the Function Menu Select the ir function 3 Push the SET key The icons will be lighted ant the instruments reverts to temperature displaying 4 Push the download key on the iPrint device and draw it up to the controller 1591014010 XR720C XR740C XR760C GB r1 0 10 06 02 doc 9 OTHER FUNCTIONS OF THE KEYBOARD wo 1 HOW TO CHANGE THE SET POINT 1 Push the SET key for more than 2 seconds 2 The value of the set point will be displayed and the amp LED starts blinking ER 3 To change the Set value push the or within 15s 4 To memor
30. unction dor door switch function EAL generic alarm bAL serious alarm mode PAL Pressure switch dFr Start defrost AUS Not used Es Energy Saving onF remote On OFF HdF Holiday function dor door switch did Time interval delay for digital input alarm 0 255 min Time interval to calculate the number of the pressure switch activation when 2F PAL If I2F EAL or bAL external alarms did parameter defines the time delay between the detection and the successive signalling of the alarm Hur Current hour 0 23 h Min Current minute 0 59min dAY Current day Sun SAt UdA day of the week Sun Sunday Mon Monday tuE Thursday UEd Wednesday tHu Thursday Fri Friday SAt Saturday dAy day of month 0 31 Mon month 1 12 yEA year 00 99 Hd1 First weekly holiday Sun nu Set the first day of the week which follows the holiday times Hd2 Second weekly holiday Sun nu Set the second day of the week which follows the holiday times Hd3 Third weekly holiday Sun nu Set the third day of the week which follows the holiday times F_C Compressor and N B Hd1 Hd2 Hd3 can be set also as nu value Not Used TO SET ENERGY SAVING TIMES ILE Energy Saving cycle start during workdays 0 23h 50 min During the Energy Saving cycle the set point is increased by the value in HES so that the operation set point is SET HES dLe Energy Saving cycle length during workdays
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