Dixell Installing and Operating Instructions
Contents
1. 0 First defrostafterstatup ney f n e 0 0 110 C n al 2 D gt iaa s ans operating mode C n C y O n 0 0 255 min n E l nc Dal o al gt aa v v d St ns delay after defrost ans stop temperature cal v 0 58 230 F Fl 2 a o LARMS emperature alarms configuration AXIMUM temperature alarm D gt LU 1 1 gt E 7 LL minimum temperature alarm 7 0 20 0 20 P 2 4 4 v 5 aal T 0 F emperature alarm d fan gt differential 45 F 5 g p a Temperature alarm dela 0 255 min Delay of temperature alarm at start 0 23h 50 min 13 p 0 255 min u Alarm delay atthe end of defrost 0 255 min Delay of temperature alarm after 0 255 min 15 P closing the door 0 254 min nu 14 pen door alarm dela 0 50 gt ej N v r r r if m Q gt v Q a a wn i m a a oO wo fae gt 2 3 me 5 S E gt 3 amp 2 Q iS QS o o D i _ os 0 4 20mA Optional IC T 5 gt gt gt D oS a oO o 2 8g S a a a so Co a gt os i eI ny o o r gt v Pb Analogue output band width gt lo nput type for the analogue output NALOGUE INPUTS hermostat probe calibration i 1 F ae 21 Ea st evaporator probe calibration 12 0 12 0 C 1 F2. 0 1 C allows decimal point display de 0 1 C in 1 C Lod Local display select which probe is displayed by the instrument P1 Thermostat probe P2 Evaporator probe P3 24 evaporator probe 1r2 difference between P1 and P2 P1 P2 Red Remote display select which probe is displayed by the remote display XW REP P1 Thermostat probe P2 Evaporator probe P3 2 4 evaporator probe 1r2 difference between P1 and P2 P1 P2 DEFROST tdF Defrost type rE electrical heater Compressor OFF rT thermostat defrost During the defrost time MdF the heater switches On and OFF depending on the evaporator temperature and dt value in hot gas Compressor and defrost relays ON EdF Defrost mode 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 and only if the evaporator temperature is less than the value in SdF set point for SMARTFROST SdF Set point for SMARTFROST 30 30 C 22 86 F evaporator temperature which allows the IdF counting interval between defrosts in SMARTFROST mode dtE Defrost termination temperature 1st evaporator 50 0 110 0 C 58 230 F Enabled only when the evaporator probe is present sets the temperature measured by the first evaporator probe which causes the end of defrost dtS Defrost termination temperature 2 e
3. y n o o D o nd evaporator probe calibration 1 N ow gt az o st evaporator probe presence n y nd evaporator probe presence ney n emperature increase during IE TRA nergy Saving cycle 22 86 F IGITAL INPUTS a E dc pen door control no Fan F Pr2 CPr F_C P oor switch polari CL 0P onfigurable digital input polari CL 0P igital input configuration EAL bAL PAL EAL dFr AUS ES OnF oO w o FF m w v 2 0 2 oF n n m e v ve fi J N v F e 0 255 min ee 0247 igital input alarm dela ojo a4 x m a D wn v dr erial address EL Sofwarerelease Mapcoe SS o o Access parameterlist_ v D o Prd Pr2 Pr2 rel 1 0 19 02 01 cod 1592009050 Dixell s r l Via dell Industria 27 32010 Z I 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 2
4. 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 digital input is activated CONFIGURABLE INPUT REMOTE ON OFF ONF This function allows to switch ON and OFF the instrument DIGITAL INPUTS POLARITY The digital inputs polarity depends on I1P and I2P parameters CL the digital input is activated by closing the contact OP the digital input is activated by opening the contact ANALOGUE OUTPUT 4 20 mA OPTIONAL The analogue output is obtained through a 4 20mA signal proportional to the input selected in parameter CAO Through the analogue output the speed of fans can be regulated according to the input variable The following input types can be selected through the CAO parameter CAO P1 room temperature CAO P2 evaporator temperature CAO P3 third probe temperature CAO 1r2 room temperature evaporator temperature To adjust the analogue output the following parameters are available AOS Start point for analogue output APb Band width for analogue output can be either positive direct action and negative inverse action Named T the input the relationship input output is given by the following charts TA A Positive Action Graph APb gt 0 DOTA nected a a AmA p g AQS AOS APb T 4 Negative Action Graph APb lt 0 mA AOS APB AOS T NOTE When
5. all the loads is 20A PROBE CONNECTIONS 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 probes among the evaporators fins in the coldest places where most ice is formed far from heaters or from the warmest place during defrost to prevent premature defrost termination TTL SERIAL LINE The TTL connector allows by means of the external module TTL RS 485 to connect the unit to a network line ModBUS RTU compatible as the d IX EL monitoring system XJ 500 Version 3 0 The same TTL connector is used to upload and download the parameter list of the HOT KEY These instruments can be ordered with direct serial output RS485 Optional USE OF THE PROGRAMMING HOT KEY The Wing units can UPLOAD or DOWNLOAD the parameter list from its own E2 internal memory to the Hot Key and vice versa DOWNLOAD FROM THE HOT KEY TO THE INSTRUMENT Turn OFF the instrument by means of the ON OFF key remove the TTL serial cable if present insert the Hot Key and then turn the Wing ON 2 Automatically the parameter list of the Hot Key is downloaded into the Wing memory the DoL message is blinking After 10 seconds the instrument will restart working with the new parameters 3 Turn OFF the instrument remove
6. pressed for about 3 seconds The compressor operates in continuous mode for the time set through the CCt parameter The cycle can be terminated before the end of the se time using the same activation key for about 3 seconds 3 3 DEFROST hree defrost modes are available through the tdF parameter defrost with electrica heater hot gas or thermostatic defrost The defrost interval is control by means o parameter EdF EdF in the defrost is made every IdF time EdF Sd the interva IdF is calculate through Smart Defrost algorithm only when the compressor is ON and the evaporator temperature is bigger than SdF parameter At the end of defrost the drip time is controlled through the Fdt parameter This instrument can menage a defrost on two different evaporators It waits the defros end on both evaporators before starting normal regulation 3 4 CONTROL OF EVAPORATOR FANS The fan control mode is selected by means of the FnC parameter C n fans will switch ON and OFF with the compressor and not run during defrost C y fans will switch ON and OFF with the compressor also during defrost After defrost there is a timed fan delay allowing for drip time set by means of the F nd parameter O n fans will run continuously and not run during defrost O y fans will run continuously also during defrost An additional parameter FSt provides the setting of temperature detected by the eva
7. timeout alarm oor switch alarm ternal alarm gt v 16A S BA t IBA 20K 250Va 250Vac_250Vac 250Vac 250Vac 250Vac DEFAULT SETTING VALUES Label Name Range Default Level XW264L Label Name Range Default Level ___ REGULATION PCP XW 2641 LS US 523 1 45 F 58 F SET SET 230 F Outputs activation delay at start up 0 255 min Anti short cycle dela CCt Compressor ON time during fast 0 23h50 min Pr2 freezing ON time with faulty 0 255 min probe COF Compressor OFF time with faulty 0 255 min Pr2 probe ISPLAY ei emperature measurement unit ie m wn 5 esolution integer decimal point in de de ocal displa Pl 1r2 emote displa v 0 0 0 N V Pl 1 o gt rE rT in E 8 a EFROST ee Defrosttype Emn E efrost mode n et point for SMART DEFROST 30 430 C Ea Defrost termination temperature 1 Evaporator Defrost termination temperature 5 2 Evaporator nterval between defrost cycles Maximum length for 1 defrost Maximum length for 2 defrost isplaying during defrost o v m Q al a a a wn m 58 230 F i20 6 Z z gE aja ala 2 J Qa v rt it SEt dEF dEG 0 255 min 2 S a 0 0 0 0 V V V AX display delay after defrost 2 G e raining time 0 60min
8. Dix ell WING XW264L 1 GENERAL WARNING 11 Ae 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 66006 O 12 A 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 Waring disconnect all electrical connections before any kind of maintenance e Fitthe 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 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 Models XW264L 38x185 mm format is mic
9. 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 0 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 ALC Temperature alarm configuration rE High and Low alarms related to Set Point Ab High and low alarms related to the absolute temperature ALU High temperature alarm setting ALC rE 0 50 C or 90 F ALC Ab ALL 110 C or 230 F when this temperature is reached and after the ALd delay time the HA alarm is enabled ALL Low temperature alarm setting ALC rE 0 50 C or 90 F ALC Ab 50 C or 58 F ALU when this temperature is reached and after the ALd delay time the LA alarm is enabled AFH Temperature alarm and fan differential 0 1 25 5 C 1 45 F Intervention differential for temperature alarm 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 instrume
10. e difference between the room probe and the evaporator probe Ot Thermostat probe calibration 12 0 12 0 C 21 21 F allows to adjust possible offset of the thermostat probe OE 1st Evaporator probe calibration 12 0 12 0 C 21 21 F allows to adjust possible offsets of the evaporator probe 03 2nd Evaporator probe calibration 12 0 12 0 C 21 21 F allows to adjust possible offsets of the 2 evaporator probe P2P 1st Evaporator probe presence n not present the defrost stops only by time y present the defrost stops by temperature and time P3P 2nd Evaporator probe presence n not present y present HES Temperature increase during the Energy Saving cycle 30 0 C 30 0 C 22 86 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 F_C Compressor and fan OFF 11P Door switch input polarity CL the digital input is activated by closing the contact OP the digital input is activated by opening the contact 12P Configurable digital input polarity CL the digital input is activated by closing the contact OP the digital input is activated by opening the contact 2F Digital input operating mode configure the digital input function EAL generic alarm bAL serious alarm mode PAL Pressure switch dFr Start defrost AUS Not used Es Energy Saving onF remo
11. e new set point value push the SET key again or wait 10s TO START A MANUAL DEFROST Sy 1 Push the DEF key for more than 2 seconds and a manual defrost will start TO ENTER IN PARAMETERS LIST PR1 To enter the parameter list Pr1 user accessible parameters operate as follows Ps TO ENTER IN PARAMETERS LIST PR2 To access parameters in Pr2 1 Enter the Pr1 level 2 Select Pr2 parameter and press the SET key 3 The PAS flashing message is displayed shortly followed by O with a flashing Zero 4 Use or to input the security code in the flashing digit confirm the figure by pressing SET The security code is 321 5 Ifthe security code is correct the access to Pr2 is enabled by pressing SET on the last digit 1 Enter the Programming mode by pressing the Set and DOWN key for few seconds af and ka start blinking 2 The instrument will show the first parameter present in p Another possibility is the following after switching ON the instrument the user can push Setand DOWN keys within 30 seconds NOTE each parameter in P r2 can be removed or put into Pr1 user level by pressing SET When a parameter is presentin Prl LED K is on HOW TO CHANGE THE PARAMETER VALUE 1 Enter the Programming mode 2 Select the required parameter with ora 3 Press the SET key to display its va
12. l 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 OdS Outputs 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 CCt Thermostat override Omin 23h 50min allows to set the length of the continuous cycle Can be used for instance when the room is filled with new products Or wWwn pr XW264L 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 DISPLAY CF Temperature measurement unit C Celsius F Fahrenheit When the measurement unit is changed the SET point and the values of the regulation parameters have to be modified rES Resolution for C in 1 C de
13. lue k and Ca LED starts 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 HOW TO LOCK THE KEYBOARD 1 Keep the and keys pressed together for more than 3 s the and keys 2 The POF message will be displayed and the keyboard is locked At this point it is only possible the viewing of the set point or the MAX o Min temperature stored and to switch ON and OFF the light and the instrument TO UNLOCK THE KEYBOARD Keep the and keys pressed together for more than 3s ON OFF FUNCTION By pushing the ON OFF key the instrument shows OFF for 5 sec and the ON OFF LED is switched ON During the OFF status all the relays are switched OFF and the regulations TO SEE THE PROBE VALUES Enter in Pr2 level are stopped if a monitoring system is connected it does not record the Select Prd parameter with ora instrument data and alarms N B During the OFF status the Light button is active Press the SET key to display Pb1 label alternate with Pb1 value Use and keys to display the other probe values Press SET to move to the following parameter PARAMETER LIST REGULATION Hy Differential 0 1 25 5 C 1 45 F Intervention differentia
14. m output ON Other outputs unchanged g z oO in temperature alarm Alarm output ON Other outputs unchanged erious external alarm ressure switch alarm 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 To reset the EE alarm and restart the normal functioning press any key the rSt message is displayed for about 3s SILENCING BUZZER Once the alarm signal is detected the buzzer can be silenced by pressing any key EE ALARM The d IX EL instruments are provided with an internal check for the data integrity Alarm EE flashes when a failure in the memory data occurs In such cases the alarm output is enabled ALARM RECOVERY Probe alarms P1 probe1 faulty P2 and P3 they automatically stop 10s 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 or when the defrost starts 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 TECHNICAL DATA Housing self extinguishing ABS Case facia 38x185 mm depth 76mm Mounting panel mou
15. nt 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 dot Delay of temperature alarm after closing the door 0 255 min Time delay to signal the temperature alarm condition after closing the door doA Open door alarm delay 0 254min nu delay between the detection of the open door condition and its alarm signalling the flashing message dA is displayed If doA nu the door alarm will be not signalled Md nn Md a rel 1 0 19 02 01 cod 1592009050 nPS Pressure switch number 0 15 Number of activation of the pressure switch during the did interval before signalling the alarm event I2F PAL AOS Analogue output start point 50 110 C or 58 230 F Sets the temperature at which the analogue output begins APB Analogue output band width 50 110 C or 58 230 F sets the width of the regulation band for the analogue output If APb is positive then it is above the start point and the kind of action is direct condenser application If APb is negative then it is below the start point and the kind of action is inverse evaporator application CAO Input type for the analogue output four input types can be selected P1 room probe temperature P2 evaporator probe temperature P3 temperature of the third probe 1r2 temperatur
16. nting in a 150x31 mm panel cut out with two screws 3 x 2mm Distance between the holes 165mm Protection IP 20 Frontal protection IP 65 with frontal gasket mod RG L optional Connections Screw terminal block lt 2 5 mm heat resistant wiring and 6 3mm Faston Optional disconnectable terminal blocks max 12A Power supply 230Vac or 110Vac 10 Power absorption 7VA max Display 3 digits red LED 14 2 mm high Inputs 3 NTC probes Digital inputs 2 free voltage Relay outputs Total current on loads MAX 20A compressor relay SPST 20 8 A 250Vac light relay SPST 16 3 A 250Vac or optional relay SPST 16 3 A special for fluorescent lights fans relay SPST 8 3 A 250Vac 1st defrost relay SPDT 8 3 A 250Vac 2nd defrost relay SPDT 8 3 A 250Vac ON OFF SPST relay 16 3 A 250Vac Other output Alarm buzzer Standard Analogue output 420 mA optional Direct RS485 optional XW REP output for remote display optional Serial output TTL standard Communication protocol Modbus RTU 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 25 60 C Relative humidity 20 85 no condensing Measuring and regulation range NTC probe 40 110 C 58 230 F Resolution 0 1 C or 1 C or 1 F selectable Accuracy ambient temp 25 C 0 5 C 1 digit CONNECTIONS EE Data or memory failure efrost
17. ows the message dA The alarm stops as soon as the external digital input is disabled again During this time and then for the delay dot after closing the door the high and low temperature alarms are disabled CONFIGURABLE INPUT GENERIC ALARM 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 CONFIGURABLE INPUT SERIOUS ALARM MODE 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 CONFIGURABLE INPUT PRESSURE SWITCH 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 CONFIGURABLE INPUT START DEFROST 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 Dix ell CONFIGURABLE INPUT ENERGY SAVING ES The
18. porator 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 3 5 ON OFF RELAY The ON OFF relay is switched ON when the instrument is ON and it is OFF when the instrument is switched OFF This relay cuts the common of the defrost relays so that 1592009050 XW264 GB dac when the instrument is switched OFF by keyboard button none of the loads have power supply 4 KEYBOARD To display and modify target set point in programming mode it selects a parameter or confirm an operation By holding it pressed for 3s when max or min temperature is displayed it will be erased To see the max stored temperature in programming mode it browses the parameter codes or increases the displayed value By holding it pressed for 3s the fast freezing cycle is started To see the min stored temperature in programming mode it browses the parameter codes or decreases the displayed value By holding it pressed for 3s the defrost is started Switch ON and OFF the cold room light Switch ON and OFF the instrument KEY COMBINATIONS To lock and unlock the keyboard To enter the programming mode To exit the programming mode Each LED function is described in the following table Function Programming Phase flashing with LED ah Anti short cycle delay enabled Programming Phase flashing with LED a The defrost is enabled Drip time in prog
19. ress The Fast Freezing cycle is enabled ALARM signal In Pr2 indicates that the parameter is also present in Pri FLASHING FLASHING FLASHING Function of the LEDs placed on the left top side of buttons BUTTON MODE FUNCTION SET FLASHING The Set point is displayed and it can be modified SET _ DEFROST ON The Manual Defrostis activated Licht ON The Lightis ON OnorF ON TheinstrumentisOFF _ 4 2 HOW TO SEE THE MIN TEMPERATURE Press and release the key The Lo message will be displayed followed by the minimum temperature recorded 3 By pressing the key or waiting for 5s the normal display will be restored 4 3 HOW TO SEE THE MAX TEMPERATURE 1 Press and release the key 2 2 The Hi message will be displayed followed by the maximum temperature recorded 3 By pressing the key or waiting for 5s the normal display will be restored 4 4 HOWTO RESET THE MAX AND MIN TEMPERATURE RECORDED To reset the stored temperature when max or min temperature is displayed 1 Press SET key until ST label starts blinking N B After the installation RESET the temperature stored HOW TO SEE AND MODIFY THE SET POINT 1 Push and immediately release the SET key the display will show the Installing and Operating Instructions Set point value The SET LED start blinking To change the Set value push the or arrows within 10s To memorise th
20. roprocessor based controller suitable for applications on medium or low temperature refrigerating units It is provided with six relay outputs to control compressor two defrosts which can be either electrical or hot gas the evaporator fans the lights and an ON OFF output It is also provided with three NTC probe inputs one for temperature control two to control the defrost end temperature of two evaporators There are two digital inputs free contact for the door switch and configurable by parameter The standard TTL output allows the user to connect by means of a TTL RS485 external module a ModBUS RTU compatible monitoring system and to programme the parameter list with the Hot Key An output for remote display XW REP a 4 20 mA output to control evaporator or condenser fans and the direct serial output RS485 are available as options 3 CONTROLLING LOADS 444 600 3 1 THE 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 In case of fault in the thermostat probe the start and stop of the compressor are timed through parameters COn and COF 3 2 FAST FREEZING When defrost is not in progress it can be activated the keypad by holding the key
21. te On OFF did Time interval delay for digital input alarm 0 255 min Time interval to calculate the number of the pressure switch activation when I2F PAL If I2F EAL or bAL extemal alarms did parameter defines the time delay between the detection and the successive signalling of the alarm SAA Set Point for anti condensing heater 50 0 110 0 C 58 230 F defines the room temperature setpoint to switch on the anti condensing heater OTHER Adr RS485 serial address 1 247 Identifies the instrument address when connected to a ModBUS compatible monitoring system Rel Release software read only Software version of the microprocessor Ptb Parameter table read only it shows the original code of the d IX EL parameter map Prd Probes display read only display the temperature values of the evaporator probes Pb2 and Pb3 Pr2 Access to the protected parameter list read only DIGITAL INPUTS The Wing series can support up to 2 free contact digital inputs One is always configured as door switch the second is programmable in seven different configurations by the I2F parameter DOOR SWITCH INPUT 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 sh
22. 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 UPLOAD FROM THE INSTRUMENT TO THE HOT KEY L Turn OFF the instrument by means of the ON OFF key and remove the TTL serial cable if present then turn it ON again 2 When the Wing unit is ON insert the Hot key and push key the uPL message appears 3 Push SET key to start the UPLOAD the uPL message is blinking 4 Turn OFF the instrument remove the Hot Key plug in the TTL serial cable then tum 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 ALARM SIGNALS P1 Thermostat probe failure Alarm output ON Compressor output according parameters COn and COF st Evaporator probe Alarm output ON Other outputs unchanged P3 2nd Evaporator probe Alarm output ON failure Other outputs unchanged ax temperature alarm Alar
23. the defrost is in progress the analogue output is set to the minimum value 4 mA This condition lasts until the defrost terminates INSTALLATION AND MOUNTING Instruments XW264L shall be mounted on vertical panel in a 150x31 mm hole and fixed using two screws 3 x 2mm To obtain an IP65 protection grade use the front panel rubber gasket mod RG L 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 the air circulate by the cooling holes CUT OUT d 3x2 MOUNTING WITH KEYBOARD COVER OPENING DOWNWARD 1592009050 XW264 GB dac Installing and Operating Instructions cick MOUNTING WITH KEYBOARD COVER OPENING UPWARD i cue ELECTRICAL CONNECTIONS The instruments are provided with screw terminal block to connect cables with a cross section up to 2 5 mm for the digital and analogue inputs Relays and power supply have a Faston connection 6 3mm 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 N B Maximum current allowed for
24. vaporator 50 0 110 0 C 58 230 F Enabled only when the 274 evaporator probe is present sets the temperature measured by the 274 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 Maximum duration of first defrost 0 255 min When P2P n no evaporator probe it sets the defrost duration when P2P y defrost end based on temperature it sets the maximum length for defrost Maximum duration of second defrost 0 255 min When P3P n no 274 evaporator probe it sets the defrost duration when P3P y 2 4 defrost end based on temperature it sets the maximum length for 2nd 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 Fdt Drain down time 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 y Immediately n after the IdF time dAF Defrost delay after fast freezing Omin 23h 50min after a Fast Freezing cycle the first defrost will be a for this time
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