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1. 9 Tab 6 6 1 follows Cod 4030221881 rel 1 5 26 10 10 34 continued plug in defrost parameters d E Reiro aemet eaei 00 00 0 5 2 water or element by time 3 hot gas by time dE mensbememmodewss SS A P maximum defrost duration or effective duran when dozz FI dd defrost at instrument on 0 no 1 yes Lak a5 defrost delay when the unit is tumed on or from digia input AT or ASZD___ C 0 d display off during defrost Ono fee Teo dd dripping ime after defi TEO i atm bypass ime ter deo FO d9 priority of defrost over compressor protection 0 no 1 yes c o d dspay defost probe emper OOO O TFT aC ime basis Ocho xmi Teo alarm parameters A alarm and fan differential DARS AL low temperature alarm indicates the maximum variation allowed in respect to the F set point If set 0 excludes the low temperature alarm AH high temperature alarm indicates the maximum variation allowed in respect to the F set point If set 2 0 excludes the high temperature alarm temperature alarm delay c o digital input configuration 4 detection time delay for the alarm input A4 1 F fan parameters FO fan management 0 fans always on except specific phases see parameters F2 C F3 and Fd 1 fans controlled according to the temperature of the evaporator and excluding the phases F2 F3 Fd fan on temperature if F0 1 F1 is the fan ON set point evapor
2. Def H1 1 relay not energised in the event of an alarm Warning the S models with alarm relay cod PJ S2 are programmed so as to be able to set the alarm output logic The programming is thus as for X type instruments with all the corresponding parameters The defrost function is thus not set using HI but rather using the parameters corresponding to the defrost H2 disable keypad Parameter H2 can be used to disable the modification of the set point and the other operating parameters when the instrument is located in areas which are accessible to the public With the keypad disabled H2 0 the set point and type F parameters can not be modified Their value can however be displayed Type C parameters which are password protected can also be modified following the procedure described below Modification of parameter PS is always allowed Furthermore the normal functions of the buttons are also blocked start continuous cycle and defrost Def H2 1 H4 disable buzzer Disables the operation of the buzzer Def H4 0 buzzer enabled Available on PJ32S and X H5 identification code Assigns the instrument an identification code that can be useful in identifying the various set ups of the parameters used for different models of machines The value is display only it can be set using the serial connection with the key or a supervisory system A positive value should be set from 1 to 99 if any parameter including the set p
3. 9 1 Table summarising the characteristics of the relays used plug in ELECTRICAL SPECIFICATIONS OF THE RELAYS PRESENT ON THE VARIOUS max current 16A resistive max current 8A resistive max current 5A resistive max current 16 A resistive Minimum T OFF between two following motor load starting is 60 seconds or more 9 2 Temperature resistance values for the NTC thermistors MODELS 2 HP maximum peak current 30A 12A 6A 72A maximum commutable resistive current 12A 8A 5A 16A maximum commutable power 250Vac 3000VA 2000VA 1250VA 4000VA maximum inductive load at 250Vac 4 A cos p 0 7 2A cos p 0 8 2A 12A cos p 0 7 maximum commutable voltage 250Vac 250Vac 250Vac 250Vac VDE0435 classification 16 2 AT 250Vac 8 2 AT 250Vac 5 2 AT 250Vac 16A 250Vac VDE0461 classification 12 2 AT 250Vac 6 4 AT 250Vac 12 12 A 250Vac UL classification 250Vac 12A res 250Vac 8A res 250Vac 5A res 250Vac 12A res UL approval of the instrument 5FLA 30LRA 2FLA I2LRA 1FLA 6LRA 12 FLA 72LRA instrument classification as per EN60730 1 12 2 AT 250Vac 6 2 AT250Vac 5 1 AT 250Vac 10 10 A 250Vac or 10 HA only NO or 8 3 A only NO Tab 9 1 1 The temperature probes with NTC thermistors normally used on the PJ32 controls feature electrical resistance which changes according to changes in temperature Below are the resistance values corresponding to various temperatures Table 9 2 2 list
4. C 8096 RH USER INTERFACE 2 and 2 digit LED display buzzer signal to indicate compressor ON Top Eco Top Eco Top Eco Top Eco defrost ON Top Top Top Top continuous cycle ON Top Eco Top Eco Top Eco Top Eco alarm event Top Top Top Top special functions duty setting continuous cycle Multifunction input Multifunction output for alarm relay serial connection keypad protection programming MECHANICAL SPECIFICATIONS dimensions mm 36x81x65 clip on fastening using bracket fastening from front panel using screws type of environmental pollution normal ELECTRICAL SPECIFICATIONS relay outputs action type 1C index of protection IP54 for panel mounting connections screw terminals for cables with min 0 5 mm and max 1 5 mm cross section and up to 2 5 mm for crimping terminals Top Top Top Top UL approval classification 250Vac 12 8 5A res 5 2 1FLA 30 12 6LRA EN60730 1 classification 12 2 6 2 5 1 AT 250Vac QUALITY AND ACCURACY watch dog self checking of internal functions Tab 9 1 only the Top versions feature the LED signals behind the buttons the other Eco versions feature only the compressor ON signal using the decimal point of the right most digit Cod 4030221881 rel 1 5 26 10 10 48
5. To manage the second probe these models are in fact programmed as Y models with all the corresponding parameters but do not have the defrost relay it is clear that they must be set so as defrosting is not enabled or if necessary only timed defrost with compressor off e the S models with alarm relay PJ32S20 to use the function of programming the status of the alarm relay by parameter H1 are set as X models as they don t have the defrost relay they must be programmed so as defrosting is not enabled or if necessary only timed defrost with compressor off dI 0 or dI gt 0 for cyclical defrost Cod 4030221881 rel 1 5 26 10 10 19 plug in 4 PARAMETERS DESCRIPTION 4 1 The configuration parameters The parameters can be classified in two groups for setting e frequent parameters indicated by type F in the following tables e configuration parameters type C whose selection is password protected to prevent unwanted tampering The assigning of the parameters to groups F and C can also be programmed but only via serial access using the key or a supervisory system Following is a description of each parameter indicating the versions it is available in and the possible values Furthermore the default value def is listed that is the value assigned to the parameter in the factory 4 2 Classification of the parameters The parameters as well as being divided by type are also grouped in logical categories identif
6. check parameter d9 select d9 1 see WARNINGS the high temperature alarm appears after a defrost the alarm delay after defrost is too short or the alarm threshold too low check parameters d8 and AH the display remains off even after the defrost the ambient temperature has not yet reached the set value or the time d8 has not elapsed wait or reduce d8 after modifying a parameter the control continues to operate with the old values for the C models the fans do not Start the instrument has not updated the old value or the parameter programming procedure was not concluded correctly that is by pressing the D button for 5 seconds 1 adelay in the activation of the compressor and the fans has been selected 2 if F0 1 fans managed by fan controller e the evaporator is hot the evaporator temperature can be read by selecting the parameter d e dripping is in progress e F1 fan off temp too low e post dripping delay is on 3 if F0 0 e F2 1 and the compressor is off e dripping is in progress e post dripping fan off is in progress turn the instrument off and on again or re program the parameters correctly 1 check parameter c0 2 parameters F0 F1 Fd dd and d 3 parameters F0 F2 dd and Fd Cod 4030221881 rel 1 5 26 10 10 38 Tab 7 4 1 plug in 8 AVAILABLE ACCESSORIES 8 1 Key for copying the parameters Duplicates the configuration of an inst
7. tr also gives the HA alarm signal Cod 4030221881 rel 1 5 26 10 10 46 plug in When the HF alarm is detected the following information regarding the status parameters is recorded temperature before the power failure duration of the power failure time the power failure is detected instant the power resumes temperature reached on resumption of power number of events HF detected In the case of a series of alarm HF events the information on the alarm is updated e both temperatures involve the highest value of all the events recorded e the time refers to the last event e the duration is the longest of all the events recorded e the number of events is increased by 1 Alarm signals the detection of one of the two alarm events HA or HF is signalled using the LED display of the plug in instrument and by activating any alarm devices available on the instrument alarm LED buzzer if featured alarm relay if featured HA alarm the display LED shows the HI alarm code flashing alternately with the temperature value the alarm LED is on and the upper segment of the left most digit is on If present the buzzer and the alarm relay are also activated HF alarm the display LED shows the HI alarm code flashing alternately with the temperature value the alarm LED is on and the lower segment of the left most digit is on If present the buzzer and the alarm relay are also act
8. T lt set point F1 fans off with compressor off 0 no 1 yes fans off in defrost 0 no 1 yes c o off in post dripping KEEN H other settings C6 seria address po ene H1 PJ32S OZT op 1 S op with defrost C PJ32C selection of alarm relay operation O alarm normally not energised 1 alarm normally energised O buttons disabled Rake H4 only PJ32S 0 buzzer enabled 1 buzzer disabled rd 06 identification code or model number F 99 F t external parameter used only for the external options F 127 50 3 199 127 199 1 199 1 15 15 1 99 127 Ai us 3 cre a min 3 ms o min o te 1 min 2 te 9 rr E fas 9 Bg 1 Ra 9 parameter HS can only be set using the serial connection and is always visible at level F Cod 4030221881 rel 1 5 26 10 10 35 Tab 6 6 1 plug in 7 ALARMS TROUBLESHOOTING 7 1 Anomalous or special operating conditions The instruments in the PJ32 series are able to automatically detect the main malfunctions with the consequent activation of the following actions e the malfunction is signalled on the display with the corresponding alarm code In particular the instrument displays the alarm code and the temperature read by the probe alternating In the case of more than one alarm these are displayed in sequence e the red LED on the L7 button is ON or the grap
9. according to the model of control used Following is a description of the possible functions A4 0 input not active The Multifunction digital input is not used This is the default value for all versions A4 1 external alarm An external alarm requiring immediate intervention can be connected to the digital input for example high pressure or compressor thermal overload alarm In particular the alarm is detected when the contact opens normal operation with contact closed The management of the alarm can be instant or with a delay according to the value of parameter A7 0 instant The activation of the alarm brings a bout a message on the display see alarm IA activates the buzzer if featured and causes the following actions on the actuators compressor causes the compressor to shut down from external alarm immediate if A7 0 fans causes operation according to the fan parameters F If the external alarm is detected during a defrost or a continuous cycle the control exits the procedure When the alarm stops the machine returns to operation as follows DEFROST defrosts can again be performed The next starts after the set time dI interval between defrosts compressor if at the instant the alarm ends the compressor is on it stays on for the minimum set time parameter c2 If it is off it stays off for a minimum time equal to the minimum off time parameter c3 The configuration with delay A7 gt 0 is especially usef
10. 0 1 o dC timebasis 0 hours min l min s c o 1 o AO alarman different 9 39 9 CF FAL shift low temperature am nese F9 Rr 9 rr CARI shite high temperature alarm theshold F0 a7 9 CF Ad temperaturealamdelay ti 1 c o roe 0 mi LA4 digital input configuration PCT 0 Ld e A7 alarm input detection delay iL CH COO IO 0 min nane rcu Au FI fan on temperature SSS F 59 Br 5 F2 jfansoffwithcompresoroff lzye tir 1 9 1 F3 fansoffduringdefrost I yes ti C 0 1 1 Fd fantime out during post drippings F ol ss 1 mi DH eee o LET 89131 1 H1 PJ32S enable defrosting PJ32C multifunction relay function C 0 1 1 H2 disablekeypad O disabed 1 1 c o 1 1 disable mS 0 1 o s so im 4 or Tab 3 3 1 HH unit of measure hereafter u of m in the tables To achieve the maximum performance from the controls or in the case of special needs the values of the operating parameters can be modified The following notes describe the factory settings and the parameters which are more frequently modified set point differential etc Furthermore for convenience all parameters which should be checked before operating the unit are indicated Cod 4030221881 rel 1 5 26 10 10 18 plug in Based on the factory settings the main fun
11. 230 Vac 115 Vac 12 Vac dc HACCP POWER RUE SUPPLY PROG KEY 230 Vac 115 Vac 12 Vac dc SERIAL amp HACCP Power PINK SUPPLY 07 PROG KEY 9 8 p3 7 E n 230 Vac EX 115 Vac ui 12 Vac dc m Warnings Fig 3 2 5 1 SERIAL amp HACCP LINK Ger PROG KEY POWER SUPPLY 230 Vac 115 Vac 12 Vac dc HACCP power LINK SUPPLY fot KEY 230 Vac 115 Vac 12 Vac dc 230 Vac 115 Vac 12 Vac dc SERIAL amp HACCP POWER DNE SUPPLY PROG 12 Vac dc e before connecting the power check the correct value of the power supply as shown on the label of the instrument e all models use NTC probes except for the PJ32S6E0 which uses PTC probes e for models S200 and S201 the alarm relay can be set as normally energised or normally de energised using parameter H1 Cod 4030221881 rel 1 5 26 10 10 17 plug in plug in 3 3 Setting the main operating parameters The plug in series instruments are supplied ready to use They are in fact programmed in the factory default settings to respond to the more common requirements The programming is performed by assigning all the parameters the more frequently required value the table below lists the parameters and the corresponding default value d d unit of code description type default measure min max 4 IC fambient probe calibrato F im iz 9 orso Lies measurement stability probe de
12. AH the delay time corresponds to the sum of the times set for two parameters parameter Ad on the plug in instrument and parameter tr on the HACCP module 2 HF alarm power failure for an extended period greater than one minute with temperature at power resumption higher than the maximum value SET AH In both cases an alarm is generated with a signal on the display of the plug in instrument and the LED and alarm relay or buzzer active if present Furthermore the status of the alarm is recorded and can then be displayed 8 3 2 Installation The HACCP module is mounted using a standard DIN rail for wall mounting an adapter is supplied DIN rail plate to be fastened to the wall and onto which the module can be mounted The module instrument connecting cable is supplied with the module and is 50 cm long the HACCP module must thus be placed at a distance that is compatible with this connection which can not be extended The module is also powered directly by the plug in instrument using this connection 8 3 3 Setting the main operating parameters During installation the main parameters to be checked are listed here below in particular please remember that two parameters determine the enabling or disabling the detection of the HACCP alarms AH Temperature alarm threshold if set to 0 disables the detection of alarms HA and HF any pending alarms are not cancelled if set to a value gt 0 means the alarm threshold is set to the va
13. dP and d4 e check the efficiency of the defrost function The message will disappear if the next defrost ends at the set temperature dF flashing defrost in progress e this is not an alarm signal but rather an indication that the instrument is performing a defrost It is displayed only if parameter d6 0 7 3 Data error In special operating conditions the instrument may detect errors in the internal storage of the data These errors may compromise the correct operation of the instrument If the microprocessor detects a data storage error display shows the code EE The instrument tries repeatedly to reset the correct operating conditions and this is indicated by the three dashes reset alternating with the code described above Warning if the serial interface to the supervisor PJOPZ48500 or the HACCP module is connected one possible cause of this behaviour may be incorrect wiring or a fault in the interface itself In this case disconnect the interface and check if the problem remains If the anomalous situation remains the control must be replaced If on the other hand the message disappears the control can still be used When the EE error occurs frequently and or is hard to resolve it is recommended to have the control checked in that the original accuracy may not be guaranteed It is good practice to investigate the cause of this type of error so as to prevent it occurring again In particular carefully read the chapter o
14. external timer Def d5 0 no delay in the start of the defrost from when the instrument is turned on or from the activation of the multifunction input Available on all models d6 display off during defrost Blocks the display of the ambient temperature during the defrost cycle at the last value read before the current defrost The display normally returns when the measurement first reaches the set point or in any case after the set alarm bypass time after defrost parameter d8 If the display during defrost is enabled the instrument displays alternatively the message dF and the value read by the control probe This warns that possible high temperatures are due to defrost in progress The off mode is also valid for the display of the second probe Par 4 if enabled Def d6 1 during defrost the last temperature measured before the start remains on the display Available on all models dd dripping time This parameter forces the compressor and the evaporator fans off after a defrost in order to allow the evaporator to drip The value of this parameter indicates the minutes of rest if dd 0 no dripping is set therefore at end defrost the compressor starts immediately Def dd 2 min Available on all models d8 alarm bypass time after defrost Indicates the time the high temperature alarm is bypassed from the end of the defrost Def d8 1 bypass time Available on all models Cod 030221881 rel 1 5 26 10 10 25 plug
15. high can shorten the duration of the electronic devices damaging them and distorting or melting the parts in plastic In any case the product should be used and stored in environments that respect the range of temperature and humidity specified in the manual Do not try to open the device in any way different than that indicated in the manual Do not drop hit or shake the device because the internal circuits and mechanisms could suffer irreparable damage Do not use corrosive chemical products aggressive solvents or detergents to clean the device Do not use the product in application environments different than those specified in the technical manual All the above reported suggestions are valid also for the control serial unit programming key or nevertheless for any other accessory in the product portfolio of CAREL CAREL adopts a policy of continuous development Therefore CAREL reserves the right to carry out modifications and improvements on any product described in the present document without prior notice The technical data in the manual can undergo modifications without obligation to notice The liability of CAREL in relation to its own product is regulated by CAREL s general contract conditions edited on the website www carel com and or by specific agreements with clients in particular within the criteria consented by the applicable norm in no way will CAREL its employees or its branch offices affiliates be responsible for po
16. in frames in various colours pack of 30 frames BLUE METAL PJOPZFMB00 pack of 30 frames GOLD METAL PJOPZFMG00 pack of 30 frames STEEL METAL PJOPZFMS00 Tab 2 2 3 4 Codes for kits if requested by the customer and the quantity supplied is sufficient the plug in instruments can be packaged in multiples of 10 The kit also allows the instrument the ordered together with the options and accessories used by customer in the application Customised programming of the parameters can also be requested The kit codes are defined according to customer request WARNINGS e the kits are packs of 10 instruments with the corresponding accessories orders must indicate the total quantity of instruments required not the number of packs the quantity ordered must be a multiple of 10 as partial packs are not supplied e the quantity of each component in the kit is 10 units except for the instruction sheet which can be ordered in single quantities Cod 030221881 rel 1 5 26 10 10 12 plug in 2 3 User interface meaning of operating indicators and LED display Figs 2 3 1 and 2 3 2 shows the front panel of the plug in display and buttons The front panel of the instrument features a three digit display ref 4 and three LEDs for backlighting the buttons refs 1 2 and 3 in Fig 2 3 1 or alternatively three graphic symbols inside the area of the display refs 1 2 and 3 in Fig 2 3 2 These indicate D this LED indicates the status
17. is 19200 baud The communication speed must be the same as that defined in the supervisor program Values from 0 to 1 Def 0 Available on all models t0 local serial address Defines a local address as an alternative to HO This parameter allows an independent address to be defined for the connected instrument The parameter is visible only if custom enabled by CAREL This situation can be useful when the instrument connected to the module is expected to change frequently e g in test situations Def 0 values can range from 0 to 127 the value 0 is reserved can not be used Enabling of operation with a local address is performed in the CAREL factory and must be requested at the moment of ordering Cod 4030221881 rel 1 5 26 10 10 41 plug in 8 2 4 1 Accessing and modifying type t parameters The method for displaying and modifying the added parameters present in the options t parameters is different from that used for the standard parameters on the instrument The main difference is the fact that all the t parameters are scrolled only using the button and not the Up and Down buttons The procedure is the following e access the parameters of the expansion module Select parameter t using the standard operation for the plug in instrument l press the E os for 5 seconds to access the first level parameters RA 2 ifparameter t is visible at the first level F parameters scroll the parameters using the 36 or bu
18. min 0 compressor C2 minimum compressor off time C 0 15 min 0 C3 minimum compressor on time C 0 15 min 0 C4 duty setting compressor safety O OFF 100 ON C 0 100 min 0 Cc continuous cycle duration C 0 15 hours 4 C6 alarm bypass after continuous cycle C 0 15 hours 2 Tab 4 6 1 c0 start delay of the compressor and the fans if managed at instrument on At the moment the control is turned on the start up of the compressor and evaporator fans is delayed by a time minutes equal to the value assigned to this parameter This delay allows the compressor to be protected against repeated starts in the case of frequent voltage drops or power failures For example setting c0 6 forces the compressor to wait 6 minutes before starting from when the power returns In the case of systems with more than one compressor parameter CO can also be used to avoid simultaneous start ups of the units simply by setting each compressor a different value for CO ANT OM ME EP ME ON NE Lab Def c0 0 no minimum delay for the activation of the compressor nat when the instrument is turned on accensione strumento power ON ore Available on all models ON m I richiesta intervento I insertion request iru c e s pates ui Lem Ictus roc CORE ON compressore compressor PEE OFF t Fig 4 6 1 c1 minimum time between 2 successive starts of the compressor Sets the minimum time in minutes that must elapse between two start ups of the compress
19. modified from the front keypad and where the necessary options are featured using the serial connection To modify the parameters from the front keypad proceed as follows 6 1 Modifying the set point and differential The instrument has a set point of 4 C This can be modified as follows 1 press the P s for a second to display the value of the set point 2 afteran instant the previously set value starts to flash E RA 3 increase or decrease the value of the set point using the 36 and or E buttons until the required value is displayed 4 press B again to confirm the new value Setting the differential control hysteresis parameter rd The instrument is pre programmed with a differential of 2 degrees This can be modified as follows press the D button for more than 5 seconds the display shows the code of the first modifiable parameter PS Pi A RA 3 press the ba button or the E button until the code rd is displayed 4 press B display the associated value z RA 5 increase or decrease the value using the and or E buttons until the required value is displayed 6 pressL again to temporarily confirm the new value and move to the display of the parameter code 7 press the os for 5 seconds to save the new value and exit the modify parameters procedure during an alarm the B s must be pressed briefly to silence the signal relay or buzzer before being able to access the modify parameters
20. not displayed nor are all the parameters for recording the status of the alarms see below The reset function sets all the parameters for recording the status of alarms HA and HF to zero t1 t 8 parameters to set the request for programmed defrost These parameters are used to define eight defrost events set by time day hour minute At the set times the HACCP module sends a defrost request to the connected plug in instrument These parameters are normally not displayed in that they refer to distinct operations in respect to the effective HACCP functions They can be displayed and modified only after having entered the correct password parameter PS before accessing the t parameters To set the values there are three parameters for each of the eight events t1 t8 e the parameter for the day is indicated by a segment 1 in Fig 8 3 4 1 which appears together with the number of the event t1 t8 and is indicated by t1 t8 e the parameter for the hours is indicated by a segment 2 in Fig 8 3 4 1 and is indicated by t 1 t8 e the parameter for the minutes is indicated by a segment 3 in Fig 8 3 4 1 and is indicated by t1 t8 O t1 t8 defrost event day This parameter defines the day of the week that the defrost is performed for one the eight possible events a single day or group of days can be selected The parameter can have the following values value description 0
21. null event in this case the two parameters associated to the hours and minutes are not displayed 1 7 selection of a single day Monday Sunday 8 selection of weekdays from Monday to Friday 9 selection of weekends Saturday and Sunday 10 all days Tab 8 3 6 2 t1 t8 defrost event hour This parameter defines the hour at which the defrost is performed the possible values are from 0 to 23 t1 t8 of defrost event minute This parameter defines the minute at which the defrost is performed the possible values are from 0 to 59 Cod 4030221881 rel 1 5 26 10 10 45 plug in 8 3 7 Parameters corresponding to the recording of the HA and HF alarms left segment parameter description min max uom def code day of last HA event 7 th hours of last HA event 0 23 hours v minutes of last HA event 59 min number of HA events detected since reset 127 maximum temperature value during HA alarm 127 C F maximum duration of the HA events 18 hours 0 0 0 et ae uim of last HF event 23 hours 0 0 0 u 59 min 127 127 CF ft maximum temperature value for HF alarm before power failure 0 127 maximum duration of the HF event 18 hours Tab 8 3 6 1 Pi Ple E The parameters for recording the status provide a detailed description of the HA and HF alarms which have occurred since the last reset All the parameters are display
22. om del HO serial address ef LL H1 special configurations mod S enable defrost flag model with alarm relay relay activation state H2 disable keypad 0 no I yes dE Tt flag fil H4 enablebuzzer enabled CC O 1 flag I HS identification code set only by serial C 99 99 byte 10 t external parameters optional modules F 127 127 byte Tab 4 10 1 HO serial address Assigns the instrument an address which it responds to when connected to a supervisory or telemaintenance system Def HO 1 Available on all models Warning H0 0 is reserved H1 special configurations This parameter defines special functions which vary according to the model PJ32S codes PJ32S0E S6E and PJ32SOP can operate as simple thermostats H1 0 or as thermostats and defrost controls for static units at normal temperature defrost on compressor stop H1 1 This function can be used only for version S with one probe in that the models which allow the connection of the product probe are programmed as Y models and for these units defrost is always available Def H1 1 operation with defrost PJ32 with alarm relay H1 sets the operating logic for the alarm relay If set to zero 0 the relay is energised when the alarm is active if set to one 1 the relay is de energised in the event of an alarm The only model which currently features the alarm relay is the PJ32S20
23. only they are divided into two distinct groups for HA alarms and HF alarms and are displayed only if the relative alarm HA or HF is effectively present The parameters are identified using the name associated to a segment of the left most digit for the HA alarms and for the HF alarms see figure The order of display of the parameters is listed in the table In the case of more than one event saved the recording is of the time of the last event only the total number of HA or HF events the maximum temperature measured during the HA and HF alarms and of the relative maximum durations 8 3 8 Operating mode and alarm signals When the detection of the alarms has been enabled by the correct setting of parameters AH and tr the HACCP module performs continuous control at one minute intervals of the control temperature and based on this and the other parameters alarm threshold and delay times signals and records the type HA alarms which regard the exceeding of the set temperature limits for extended periods longer than the set delay times The module also controls the temperature on re starts after power failures signalling and recording type HF alarms HA alarm arises when the control temperature is above the maximum set SET AH for longer than the set delay Ad tr The parameter Ad sets the alarm delay of the plug in instrument on exceeding this time an alarm signal high temperature is activated generated by the instrument itse
24. terminals removable terminals A 81 81 B 36 36 C 68 78 D 65 65 Tab 10 1 CAREL reserves the right to modify or change its products without prior notice Cod 4030221881 rel 1 5 26 10 10 50 CAREL CAREL INDUTRIES HQs Via dell Industria 11 35020 Brugine Padova Italy Tel 39 049 9716611 Fax 39 049 9716600 http www carel com e mail carel carel com Agency Cod 030221881 rel 1 5 26 10 2010
25. there is just one alarm present the value of temperature is no longer displayed while it flashes if other alarms are present or the second probe is displayed E1 flashing evaporator probe or food storage probe error e probe not working the probe signal is interrupted or short circuited e probe not compatible with the instrument IA flashing alarm from multifunction digital input immediate or delayed e check the multifunction input and the parameters A4 and A7 L0 flashing low temperature alarm The probe has read a temperature which is lower than the set by a value greater than parameter AL e check the parameters AL Ad and AQ The alarm is automatically reset when the temperature returns within the set limits see parameter AL HI flashing high temperature alarm The probe has read a temperature which is higher than the set by a value greater than parameter AH e check the parameters AH Ad and AO The alarm is automatically reset when the temperature returns within the set limits see parameter AH This alarm can be also be activated by the HACCP module for a description see the corresponding chapter Cod 4030221881 rel 1 5 26 10 10 36 plug in EE shown during operation or when the unit is turned on error in reading the parameters from the memory See Data error Ed flashing The last defrost ended after exceeding the maximum duration rather than reaching the end defrost set temperature e check parameters dt
26. to the fan controller see parameter F1 and parameters F3 and Fd which have priority over the controller Remember that if there is a dripping period parameter dd the fans are off in any case Def F0 0 not subject to the fan controller Available on PJ32C F1 fan shut down temperature parameter operative only if F0 1 The controller activates the fans only when the temperature of the evaporator is lower than the value set for F1 F1 is the effective real temperature and not the difference from the set point Once off the fans start again when the difference between the probe and the set point is equal to A0 where AO is the fan control differential see the figure below Temp evapor t Fig 4 9 1 Def F1 5 as shown in the figure the fans stay on until the evaporator temperature is less than 5 C Available on PJ32C F2 stop fans with compressor off Decides if the fans must be always on excluding F3 dd and Fd or only when the compressor is on F2 0 2 no The fans are also on when the compressor is off F2 1 yes The fans are off when the compressor is off Def F2 1 fans off when the compressor is off Available on PJ32C F3 stop fans for defrost Decides if the fans must operate or not during defrost F3 0 no the fans operate during the defrost F3 1 yes the fans do not operate during the defrost Remember that during the dripping time if featured the fans are always off Def F3
27. to the parameters and exiting Press the L7 button for 5 seconds to definitively save the new values IMPORTANT WARNING only pressing the DANA for 5 seconds moves from the temporary to the definitive saving of the modifications Therefore if power is disconnected from the instrument before pressing B all the modifications made and temporarily saved will be lost 6 5 Exiting the procedure without modifying the parameters 1 do not press any button for at least 60 seconds exit by TIME OUT In this way the instrument returns to normal operation without saving any of the modifications to the parameters 2 select the parameter PS enter using L and when the value displayed is 00 press L again 6 6 Parameters summary table parameters type min max uom def notes PA password F 00 199 22 probe parameters a display irstsecond probe O fist ambient 9 C F 0 C 1 F r control parameters m mxmunstalowed e a re pt automatic variation of ite set point in night time operation that is when the curtain switch is closed when B a snae eei mode not oly TTT compressor Parise Fw T compressor tan delay time Jefo ef minimum time between Z successive sarts ofthe compresor 0 e2 minimum compressoroffime o Sefo 63 minimum compressorontime TETI Cd safety relay GOFF 100 0N See Duty stins Teo ce continuous esci dura TETI Les alarm bypass time atter continuous ade
28. units operating at low temperature In these models there are three relays providing complete control of the compressor fan and defrost management functions The three 8 5 and 5A resistive relays have been built into a very compact case in the versions which also feature the 230V or 115V power transformer and without compromising the performance or the reliability of the product e There are two probe inputs for control AMB T and for defrost DEF T e There are three outputs the 8A resistive compressor relay defrost and 5A resistive for the fans e All versions have removable terminals Top and 115Vac and 230Vac power supply Cod 4030221881 rel 1 5 26 10 10 8 plug in 1 2 Characteristics Power supply The plug in can be powered at 230Vac or 115 Vac using an internal transformer or at 12Vac Vdc without internal transformer Aesthetics and ergonomics The LED signals are clearly visible by the backlighting of the three buttons or 3 symbols on the display The front panel frame can be customised both in terms of colour and indications LED display The temperature and the parameter settings are displayed by two and a half digits For the temperature values the field of display is from 50T127 degrees centigrade or Fahrenheit For the parameters the field of display can be from 99 to 199 or from 127 to 127 The 3 status signals represent the activation of an actuator normally a compressor the defrost function or
29. 1 evaporator fans off during defrost Available on PJ32C Cod 4030221881 rel 1 5 26 10 10 29 plug in Fd post dripping off active both when F0 0 and F0 1 The fans after the defrost can be stopped for a further period in minutes defined by the value of Fd This is useful to allow the evaporator to return to operating temperature after the defrost thus avoiding forcing hot air into the refrigerator In the case of management by fan controller the time Fd does not need to be selected in that the controller makes the fans start again when the evaporator reaches operating temperature If the fan controller is active F0 1 assigning Fd a value other than zero means the fans stay off for a time equal to the value of Fd irrespective of the temperature of the evaporator Def Fd 1 minute post dripping stop Available on PJ32C Diagram summarising operation of the evaporator fans fan management fans always on fans managed by fan controller fans on when evaporator fans off when temperature F1 AD compressor off fans off when evaporator temperature gt F1 fans off when compressor off fans always off during dripping dd and post dripping fd Fig 4 9 2 Warning for correct operation the post dripping phase must be preceded by the dripping phase for a time greater than zero dd gt 0 Cod 030221881 rel 1 5 26 10 10 30 plug in 4 10 H other settings alan parameters tape mio ak
30. 221881 rel 1 5 26 10 10 37 7 4 Troubleshooting plug in The following table shows other anomalous operating situations which may arise in the various models The more frequent causes are indicated and a number of checks are suggested problem CAUSE checks the compressor does not start signalled by compressor LED flashing e compressor delay on e post defrost dripping in progress check parameters c0 c1 and c2 and dd the temperature is over the set limit but there is no alarm message and the buzzer if present does not sound alarm delay on check parameters Ad c6 d8 the alarm IA is signalled multifunction input without this actually being active the multifunction input generates an alarm when the contact opens check the connection of the input and if it is closed in normal operation the alarm connected to the multifunction input is not detected alarm delay on or parameter setting error check if A4 1 check the status of the digital input check A7 the defrost is not activated e defrost cycle too short dP e interval between defrost dI 0 in this case the defrost is not activated check parameters dP and dI and H1 for S models the end defrost temperature is too low or the evaporator temperature is too high check parameters dt and d defrost probe the manual defrost is not activated and the defrost LED flashes the compressor protection times are active
31. An application diagram is shown in the figure also indicated are the possible accessories and expansion modules as well as the connections for the inputs and outputs CI 1 instrument 3 2 plug in frame 3 temperature probes CI li 4 power transformer according to the models RS485 serial adapter module HACCP module 7 parameter programming key o This manual describes the characteristics of the instrument and only briefly mentions the accessories and expansion modules SS a The connection of the RS485 or HACCP expansion modules is mutually exclusive b 2 1 Meaning of the inputs and outputs description numbering of terminals with reference to Fig 2 1 numbering of terminals with reference to Fig 2 1 POWER terminals 8 and 9 the value of the power supply can be 230Vac 115Vac or 12Vac Vdc The effective value SUPPLY is indicated on the connection label temperature terminals 5 and 6 are for the ambient temperature probe control nbn terminals 6 and 7 are for the defrost temperature probe defrost when featured according to the code connection is for standard CAREL NTC or PTC probes the group of terminals numbered 1 2 3 4 are for the connection of the relay outputs The assignment of the outputs can change according to the code the effective assignment is indicated on the connection label For instrument codes with one relay only the changeover contact is available for compres
32. CAREL plug in plug in electronic digital thermostat with defrost control ENG User manual LEGGI E CONSERVA IL ISTRUZIONI c READ AND SAVE THESE INSTRUCTIONS Technology amp Evolution LEGGI E CONSERVA gt QUESTE ISTRUZIONI lt READ AND SAVE THESE INSTRUCTIONS We wish to save you time and money We can assure you that a thorough reading of this manual will guarantee correct installation and safe use of the product described IMPORTANTS WARNINGS A CAREL bases the development of its products on several years experience in the HVAC field on continuous investment in technological innovation of the product on rigorous quality procedures and processes with in circuit and function tests on 100 of its production on the most innovative production technologies available on the market CAREL and its branch offices affiliates do not guarantee in any case that all the aspects of the product and the software included in the product will respond to the demands of the final application even if the product is built according to state of the art techniques The client builder developer or installer of the final equipment assumes every responsibility and risk relating to the configuration of the product in order to reach the expected results in relation to the specific final installation and or equipment CAREL in this case through specific agreements can intervene as consultant for the positive result of the final start up machine
33. RUPEE OE E RED d RE pecie 18 3 4 Table summarising the parameters to be checked before installation 19 4 1 The confi guration parameters ss ioco des oed bet eee en bir td tb e dede ee peat n Ne id eee prede 20 4 2 Classification of the parameters eet eR URN A EE I arida ae lei ada e dii ia cell 20 4 3 The pass Cue RR RREA E Ea 20 4 4 temperature probe management parameters i 20 4 5 f temperature control parameters oe ERE RR UE EO dee neo 4 6 cz compressor management parameters e ge E HERI co aera o es a AE Sa Ea a ees taveseeztes 4 7 d defrost management parameters du liano nino siena dirai diano binarie 4 8 A alarm management parameters hod ene en bp tb eere aao da etd ae eee den 4 9 F evaporator fan management parameters 430 Hiothersettngs eR RR ERE ilaele des 6 1 Modifying the set point and differential 6 2 Accessing the parameters eoe ir RENE cles os sg eae tLe AS cee eint REIR R S 6 3 Modifymg the parameters 25 uoa E a sl ll vn e doce d EORR 6 4 Saving the new values assigned to the parameters and exiting i 34 6 5 Exiting the procedure without modifying the parameters 34 6 6 Parameters Sumitiiary table into ee Pe EAE EURO ED AREE itane 34 7 ALARMS TROUBLESHOOTING eere esent ee enses tn ensis tata sone to tn sons tata eee seen sone seen eee sn en sone eeensonen sen sene seen sene seen sese DO 7 1 Anomal
34. a model PJ32S20 with a digital input and two relay outputs actuator control and output alarm with changeover contact e The models PJ32SOP and S1P use a 12A resistive relay with changeover contact In all the other models the relay is 8A resistive e There are a significant number of versions both Top and Eco with 230V 115V and also 12V power supply 1 1 2 PJ32Y PJ32X These are designed for the management of static units operating at low temperature that is below 0 C which require active defrost using electrical heating elements or the injection of hot gas The PJ32Y or X in fact as well as working as a thermometer and a thermostat like the S model also manages the defrost actuator The frequency and duration of the defrost can be set The end defrost can occur according to the temperature reached connecting a probe to the evaporator or by time e The Y models feature two probe inputs for control AMB T and for defrost DEF T e The X models on the other hand feature just one probe and a digital input for these models timed defrost is compulsory e There are two relay outputs for the control of the actuator COMPRESSOR and for DEFROST control with changeover contacts the relays used are 8A resistive e Almost all models feature removable terminals Top with 230 or 115V power supply There is just one Y model Eco with 12V power supply 1 1 3 PJ32C These represent the most complete solution for ventilated
35. an alarm Alarm buzzer The controls with one relay only can be fitted as standard with a buzzer for signalling alarms Duty setting and continuous cycle Functions are e the activation of the compressor with programmable timers in the event of control probe fault e continuous cycle which forces the activation of the compressor for the programmable time Multifunction input The digital input when present can be used to enable disable end the defrost and to manage serious alarms which require the immediate e g high pressure or delayed e g low pressure shut down of the unit Connections The economical versions Eco maintain the traditional fixed terminals while the complete versions Top use removable terminals The latter significantly simplify the installation and maintenance of the machine Relay outputs There are according to the model up to three relays for the control of compressors defrost fan and alarms When more than one relay is fitted the common of all the relays is connected and is available on just one terminal Multifunction output The alarm relay output when present can be set using a parameter to be normally activated or normally deactivated Keypad and parameter protection The keypad can be disabled to avoid tampering by unauthorised persons For each parameter furthermore the level of possible modification with or without PASSWORD can be set Serial connection The Top versions feature serial con
36. application but in no case can it be held responsible for the positive working of the final equipment apparatus The CAREL product is a state of the art product whose operation is specified in the technical documentation supplied with the product or can be downloaded even prior to purchase from the website www carel com Each CAREL product in relation to its advanced technological level needs a phase of definition configuration programming commissioning so that it can function at its best for the specific application The lack of such phase of study as indicated in the manual can cause the final product to malfunction of which CAREL can not be held responsible Only qualified personnel can install or carry out technical assistance interventions on the product The final client must use the product only in the manner described in the documentation related to the product itself Without excluding proper compliance with further warnings present in the manual it is stressed that in any case it is necessary for each Product of CAREL e To avoid getting the electrical circuits wet Rain humidity and all types of liquids or condensation contain corrosive mineral substances that can damage the electrical circuits In any case the product should be used and stored in environments that respect the range of temperature and humidity specified in the manual e Do not install the device in a particularly hot environment Temperatures that are too
37. arameter mode e moves from one parameter to the previous e decreases the value of the parameter Cod 030221881 rel 1 5 26 10 10 13 plug in 3 INSTALLATION The installation operations for the plug in controls can be grouped as follows 1 mechanical installation 2 electrical connections probes power supply and actuators 3 setting of the operating parameters 3 1 Mechanical installation 1 Insert the instrument in the previously created hole as per the drilling template 71x29 mm 2 for mounting using the bracket for all Eco versions lock the instrument onto the panel by sliding the bracket 3 for mounting using screws from the front panel only for the Top versions rest the instrument on the front panel and using the screwdriver tighten the two screws making sure the two teeth are properly clicked in The following describes the procedure in detail The thickness of the fastening panel must not exceed 3 mm 3 1 remove the front panel frame and check that the two attachment teeth are in their slot they must not protrude from the dimensions of the drilling template If necessary unscrew the two screws applying pressure Do not unscrew too much the screw must not be raised from the front panel 3 2 connect all the cables to the corresponding terminals or insert the pre wired removable terminals onto the corresponding connectors 3 3 insert the instrument in the hole in the panel placing the connected cables ins
38. atibility product codes have been defined which cover the needs of the market Customised versions can only be produced if they are compatible with the internal limits of the instruments and according to adequate quantities and the kit requirements The front panel frame is supplied in grey standard for the single instrument it can be customised in terms of colour and text and can thus be ordered separately or in a kit 2 2 1 Codes for the instruments in individual packaging Eco models with 1 relay 1 probe fixed terminals PJ32S 12Vac Vdc NTC no options screw terminals relay 8A SPDT PJ32SOEL00 PJ32S 230Vac NTC no options screw term relay 8A SPDT PJ32S0E000 PJ32S 110Vac NTC no options screw term relay 8A SPDT PJ32S0E100 PJ32S 230Vac PTC no options screw term relay 8A SPDT PJ32S6E000 Tab 2 2 1 Top models with 1 relay 1 or 2 probes removable terminals serial connection J328 230Vac 1 2 NTC removable terminals relay 8A SPDT J328 110Vac 12 NTC removable terminals relay 8A SPDT J32S 230Vac 2 NTC removable terminals 16A SPDT buzzer PJ32S0P000 J32S 230Vac 1 NTC removable terminals 16A SPDT dig input buzzer PJ32S1P000 J32S 110Vac 2 NTC removable terminals 16A SPDT buzzer PJ32SOP100 J32S 110Vac 1 NTC removable terminals 16A SPDT dig input buzzer PJ32S1P100 Tab 2 2 2 the S models with two probes PJ32S00 and PJ32S0P have been designed only to use the secon
39. co versions use the traditional fixed screw terminals e the Top versions on the other hand feature removable terminals with two types of cable connection blocks screw or by crimping The versions with removable terminals offer considerably simplified connection of the instrument both for installation and maintenance Furthermore connection errors are avoided as the three connection blocks have a different number of pins 3 2 1 Power supply The plug in instruments are connected to the power supply using terminals 8 and 9 in the Eco versions or with the two way removable block to be inserted in the terminals 8 and 9 for the Top versions The voltage supplied to these terminals must correspond within the tolerance indicated to the value on the instrument s connection label The values are 230Vac 115Vac and 12Vac Vdc according to the code The electrical insulation featured in the instrument for the versions with mains power supply 230Vac and 115Vac corresponds to reinforced insulation The versions with 12Vac Vdc power supply do not feature insulation To guarantee correct operation during voltage drops all the plug in instruments feature low power operation below a certain threshold the current supplied to the display is gradually reduced up to the total switching off of the display and LEDs All the other functions are guaranteed within the maximum allowed voltage drop limits in particular the status of the relay is maintained O
40. ctions are the following e PJ32S configured as a thermostat with operation in degrees centigrade set point at 4 C and differential of 2 C The DEFROST operation is enabled by time at 8 hour cycles lasting 30 minutes compressor stop only The high and low temperature alarms are disabled In the case of operation in continuous cycle the duration is 4 hours and the temperature alarm is bypassed for 2 hours from the end of the cycle e PJ32Y PJ32X have the same settings as the PJ32S Furthermore these are programmed to manage defrosting using electrical elements with operation based on time for the X version and with the second probe for the Y model The display of the temperature during defrosting remains on the last value acquired before the start of the defrost There is an evaporator dripping time of two minutes after the defrost and the high temperature alarm is bypassed for one hour from end defrost e PJ32C on top of the functions of the IR32Y these units are set to manage the evaporator fans which are stopped when the compressor is off and during defrosting Furthermore a one minute pause is set for the fans after dripping to allow the evaporator to return to operating temperature before starting forced ventilation In the IR32C the defrost is stopped when the probe on the evaporator measures 4 C defrost by temperature If many of the instrument s parameters need to be modified during installation it may be useful to set th
41. d in the figure The display and modification procedures are the same indicated in the paragraph on accessing and modifying the t parameters of the RS485 serial module 8 3 5 Parameters of the plug in instrument parameters SET control set point 50 1277 eor 4 AH hightemperature alarm threshold TCE O0 127 CPF 0 Ad temperature alarm delay time CCE C 0 199 min 0 Tab 8 3 5 1 SET value of the control set point of the plug in instrument This is read directly from the value set on the instrument AH value of the high temperature alarm threshold This is read directly from the value set on the instrument Together with the set point it determines the value of the temperature threshold for the detection of alarms HA and HF respectively high temperature and power failure alarms Threshold SET AH Warning AH 0 disables the detection of the alarms Ad Value of the temperature alarm detection delay This is read directly from the value set on the instrument It is used together with parameter tr in the HACCP module to determine the value of the delay in recognising the HA alarm event 8 3 6 HACCP module parameters left segment code _ parameter description min max uom def tu day of the week of the internal clock 1 7 1 th hour oftheinternalclock 0 23 hows 0 f jminuesoftheinternalclo
42. d pressing the activation button for the necessary time 2 write the parameters from the key to the connected instrument This is performed by setting dip switch 2 to position ON and dip switch 1 to OFF and pressing the activation button This operation can only be performed if the parameters contained in the key model are compatible with the connected instrument 3 reset the modify parameters flags minus sign for H5 This is performed by setting dip switch 1 to position ON and dip switch 2 to OFF and pressing the activation button This operation is always possible and the values of the parameters apart from the flag HS are not modified The indications of the two colour LED are the following e on fora brief the red LED turns on at low intensity e data transfer gt the red LED turns on at high intensity the activation button must not be released during this period e operation completed gt the green LED turns on the operation is concluded e in the event of errors the red and green LEDs will flash to indicate various causes 1 instrument disconnected or no response 2 low power battery 3 instrument model not compatible 4 transfer error 5 instrument EEPROM error For a more compete description of the causes of these errors please refer to the key instruction sheet Fig 8 1 1 Cod 030221881 rel 1 5 26 10 10 39 plug in 8 2 Serial adapter for RS485 network 8 2 1 General characteristics The optio
43. d probe for the measurement and display of the food storage temperature Food Probe To manage the second probe these models are in reality programmed as Y models with all the corresponding parameters yet without the defrost relay it is clear that they must be set so as not to use the defrost function or if necessary timed defrost only d0 2 for timed defrost dI 0 for no defrost or dI gt 0 for cyclical defrost Top models with 1 relay 1 alarm relay 1 probe dig input serial connection CODE PJ32S 230Vac NTC removable terminals comp relay 8A NO alarm 8A SPDT PJ32820000 PJ32S 110Vac NTC removable terminals comp relay 8A NO alarm 8A SPDT PJ32S20100 Tab 2 2 3 the S models with alarm relay PJ32S20 to use the function for programming the status of the alarm relay using parameter H1 are programmed as X models as they do not have the defrost relay they must be programmed so as not to use the defrost function or if necessary timed defrost only see Tab 2 2 2 Eco models with 2 relays 2 probes 2 8A relays fixed terminals PJ32Y 12Vac Vdc 2 NTC comp relay NO defrost SPDT PJ32YOELOO Tab 2 2 4 Top models with 2 relays 1 2 probes 2 8A relays removable terminals serial conn PJ32Y 230Vac 2 NTC probes comp relay NO defrost SPDT PJ32X 230Vac 1 NTC probe 1 digital input comp relay NO defrost SPDT PJ32Y 110Vac 2 NTC probes comp relay NO def
44. d reduction of insulation These warnings must be followed for connection e electrical power supply other than that prescribed may seriously damage the system e use cable ends that are suitable for the terminals Loosen each screw and insert the cable end then tighten the screws On completing the operation tug the cables lightly to check they are sufficiently tight e separate the probe signal and digital input cables from inductive loads and power cables as much as possible to avoid any electromagnetic disturbance Never lay power cables and probe cables in the same cable channels including those for the electrical cables Do not install the probe cables in the immediate vicinity of power devices contactors thermo magnetic devices or other e reduce the length of the sensor cables as much as possible and avoid spirals around power devices The probes must be connected using shielded cables minimum cross section for each lead 0 5 mm e the probes can be installed up to a maximum distance of 100m from the control To extend the distance of the probes use cables with a minimum cross section of 1 mm shielded where possible In this case the shield must be connected to the common of the probe Do not earth the other end of the shield the sensor end e only use IP67 probes as end defrost probes place the probes with the vertical bulb upwards so as to assist the drainage of any condensation Remember that the thermistor temperature pr
45. def rd control differential 0 0 5 C F O 19 C F 2 rl minimum set allowed 50 r2 C F 50 r2 maximum set allowed rl 127 C F 60 r3 enable alarm ED for models Y X C 0 1 flag 0 r4 Automatic variation of the Set Point for 20 20 C F 0 night time operation rL direct reverse operating mode note only C0 1 flag 0 valid for models S A C C C C Tab 4 4 1 rd control delta Sets the value of the differential or hysteresis used in the temperature control A narrow that is numerically small differential guarantees an ambient temperature which stays close to the set point yet with frequent activation and deactivation of the main actuator normally the compressor The life of the compressor can still be protected by suitably setting the parameters which limit the number of activations per hour and the minimum off time see C parameters In all the refrigeration instruments the differential is set to the right of the set point as indicated in the figure DIRECT operation direct cooling rd lt S on actuator off Set Point t Fig 4 5 1 Def rd 2 Available on all models r1 minimum SET allowed Determines the minimum value which can be set for the set point This parameter prevents the user from setting the set point lower than the value indicated by r1 Def 50 r2 maximum SET allowed Determines the maximum value which can be set for
46. e F 0 1 0 5 display in C F 0 C 1 F C 0 1 flag 0 Tab 4 4 1 C calibration or Offset This parameter allows the temperature shown on the display to be corrected The value assigned to this parameter is in fact added to positive value or subtracted from negative value the temperature measured by the probe For example if the temperature displayed needs to be decreased by 2 3 degrees set C 23 The Offset can range from 127 to 127 with a variation in the reading between 12 7 and 12 7 C F The parameter does not act on the defrost probe in all the models with two probes Def 0 0 no Offset to probe reading Available on all models 2 measurement stability Defines the coefficient used to establish the temperature measurement Low values assigned to this parameter offer the prompt response of the sensor to variations in temperature the reading is however more sensitive to disturbance High values slow down the response but guarantee greater immunity to disturbance that is a more stable and more precise reading The setting is also used also for the second probe if present Value from 1 to 15 Def 4 Available on all models Cod 4030221881 rel 1 5 26 10 10 20 plug in 4 display control or food storage probe For instruments with two probes S Y C this parameter selects whether to display the temperature of the control probe ambient probe or the second probe which in this case is used o
47. e complete configuration of one instrument and then copy it using the KEY accessory in this case the operation can be performed in just a few seconds with a complete copy of all the parameters 3 4 Table summarising the parameters to be checked before installation code parameter type min max uom def control rd control differential F 0 19 C F 2 parameters L1 control set point 50 127 C F 4 type of defrost O heating element 1 hot gas 2 heatin defrost ag in by uus 3 hot x by time i S d Hag SO parameters m interval between defrosts F 0 199 h j end defrost temperature set point F 50 127 C F Ad empere ddl TEO eoo fo alarm parameters AL low temperature relative alam TF 0 127 CPF 0 AR big iper e a Fo A cer 0 other settings H1 enable defrosting mod S and selection of multifunction relay C 1 flag 1 function alarm Tab 3 4 1 WARNINGS e forall models where the second probe is not used or used for the display of the product temperature or for the models with the alarm relay parameter d0 must be set for timed defrost in this way any alarms from the second probe are not signalled To stop the running of the defrost cycles parameter dI must also be set to 0 e the S models with two probes codes PJ32S00 and SOP have been designed to use the second probe for measuring and displaying the food storage temperature Food Probe
48. e en edo td gib ee nde 46 CanGellinis the alarins 405 ien i ER t an cu 47 9 TECHNICAL SPECIFICATIONS eeeeeee eese esee etn senta sns ta tasse tata sone to tn seen sone es tn sone sa enses seen senses enses senses en sese seen esses ese FO 9 1 92 Table summarising the characteristics of the relays used sess nennen enne rn trennen enne 49 Temperature resistance values for the NTC thermistors i 49 plug in INTRODUCTION The new plug in family for refrigeration is made up of a new series of microprocessor based electronic controls with LED display designed for the management of display case and showcase refrigeration units A range of models is available providing the best solution for all applications at the most competitive price The plug in family builds on the experience and success of the previous product ranges such as the IR32 and IR32E with the aim of offering an increasingly simple and economical product without relinquishing on the performance required by the refrigeration manufacturer The structure of the parameters and the operating logic has remained from the IR32E range a number of functions have been simplified and extra performance has been added The main characteristics are e external RS485 serial interface optionally connected to the instrument e display in degrees centigrade or Fahrenheit using display with two digits and minus sign e complete range with m
49. e temperature alarms Def 0 C equal to 0 5 C Available on all models ON ON Allarme relativo bassa temperatura allarme relativo alta temperatura low temperature relative alarm high temperature relative alarm Set Point Fig 4 8 1 Cod 4030221881 rel 1 5 26 10 10 26 plug in AL minimum temperature relative alarm Selects the low temperature relative alarm The value of AL does not indicate the alarm temperature but rather the maximum difference allowed below the set point For all models low temperature relative alarm set point value of AL Note that changing the set point automatically changes the low temperature alarm in that maximum difference allowed remains the same AL The low temperature alarm has an automatic reset This means that if the temperature returns above the threshold value A0 the alarm signal automatically stops Finally please remember that the low temperature alarm is also used in the continuous cycle see corresponding section on page 59 In fact if the temperature falls to the alarm level the continuous cycle is automatically deactivated even if the selected period has not elapsed The deactivation does not give rise to an alarm signal Def AL 0 low temperature relative alarm inhibited Available on all models AH high temperature relative alarm Selects the high temperature relative alarm The value of AH not indicates the temperature of alarm but rather the maximum difference al
50. hen modifying the value two segments of the left most digit signal that the minimum and maximum values have been exceeded segments 1 and 2 in Fig 8 2 4 1 1 If an out of range value is confirmed the maximum or minimum value is saved according to whether the upper or lower limit has been exceeded Fio 8 2 4 1 1 Cod 4030221881 rel 1 5 26 10 10 42 plug in 8 3 Additional HACCP module 8 3 1 General characteristics The optional HACCP module expands the control functions of the plug in family instruments by adding temperature control with the recording of alarm siutuations due to the exceeding of the maximum temperature threshlolds for significant periods which may derive from operating anomalies either in the controlled machines or due to power failures The added control functions are designed to help the user monitor the food storage temperature in order to comply with the checking and recording phases required by the HACCP standards on correct food storage As an option a function can be enabled to generate defrost requests programmed at set times HACCP alarm management The control performed by the al HACCP module features the management of two different events which may be dangerous for correct food storage 1 HA alarm if the control temperature is higher than a maximum value for a longer than a set delay time The threshold value corresponds to the value set on the plug in instrument for the high temperature alarm SET
51. hic symbol 2 appears on the display e for some alarms the internal buzzer if present sounds e for the same alarms the alarm relay if present and configured as an alarm output is activated Pressing the D button silences the buzzer while the red LED and the alarm relay go off only when the cause of the alarm no longer exists The alarm codes are shown in the following table alarm code buzzer and alarm relay alarm description models on which present E0 active probe control error all El not active defrost probe error all except S and X IA active external alarm immediate or delayed by A7 all if the digital input is present LO active low temperature alarm all HI active high temperature alarm all EE not active data error all Ed not active end defrost for time out all except PJ32S dF not active defrost in progress all Tab 7 1 1 7 2 Description of the main signals and alarms LED flashing The activation of the corresponding function is delayed by a timer on stand by for an external trigger or inhibited by another procedure in progress For example if a continuous cycle is in progress and a defrost is requested the latter awaits the end of the continuous cycle and the corresponding LED defrost flashes EO on or flashing control probe error e probe not working the probe signal is interrupted or short circuited e probe not compatible with the instrument The alarm signal EO stays on if
52. ide and hold it in position by pressing in the centre of the front panel using the screwdriver tighten the lower screw 90 the tooth must come out of its slot and click onto the panel then tighten up until the front panel is secure 3 4 repeat the same operation for the upper screw 3 5 if the tooth does not click onto the panel max thickness 3 0 mm unscrew the screw applying pressure at the same time with the screwdriver so that the tooth moves back As mentioned in point 1 do not unscrew too much the head of the screw must not be raised from the surface of the front panel 3 6 the two screws must be tightened with the same pressure so as to not leave one corner higher than the other DO NOT tighten excessively when the front panel is secure simply tighten a further turn to compress the gasket 3 7 apply the front panel frame 4 If having to remove the instrument proceed as follows 4 unclip the front panel frame 4 2 unscrew the lower screw at the moment the front panel leaves the panel keep pressure on the screw and unscrew a further 90 to make the tooth go back into its slot 4 3 repeat for the upper screw 4 4 remove the instrument from panel keeping it horizontal WARNINGS the screwdriver which should be used is the Pozidriv 1 PZD1 Phillips head screwdriver Do not use motorised screwdrivers 3 2 Electrical connections The instruments in the PJ32 series feature different terminals for the connections e the E
53. ied by the fist letters of the parameters themselves Following is a list of the existing categories with the meaning and identifying letters indicates the password this must be entered to access the configuration parameters C oe ii a a HHS MM M temperature probe management parameters temperature control parameters d defrost management parameters H general configuration parameters oo Tab 4 2 1 4 3 The password PS This is deliberately included to complicate access to type C parameters so as to prevent accidental or unauthorised modifications Type C parameters are in fact those which modify the configuration of the control Once entered into the configuration parameters section using the password the control also allows for convenience type F parameters to be modified When displaying the type F parameters type C parameters are accessed as follows 1 select the password parameter PS 2 enter and confirm the value 22 the correct password 3 allthe parameters F and C can now be selected on the display 4 4 temperature probe management parameters probe parameters type min max uom def C ambient probe calibration x10 tenths of a degree F 127 127 C F 0 0 2 measurement stability C 1 15 4 4 display control food storage prob
54. in d9 defrost priority over compressor protection Overrides the compressor protection times c1 minimum time between 2 successive starts c2 minimum off time and c3 minimum on time at the start of the defrost The possible values are 0 the protection times are respected 1 the protection times are overridden the defrost has priority and does not respect the compressor time settings It is useful for example with hot gas defrost to avoid delaying the defrost in the case where the compressor has just stopped and there is a minimum time between two starts Remember however that in this case the maximum number of activations per hour of the compressor may not be respected Def d9 0 the defrost respects the compressor time settings as default these are set to zero For instruments with a serial number less than 5000 d9 1 by default Available on all models d defrost probe reading Selecting this parameter displays the value read by the defrost probe for instruments where fitted Once the parameter d has been selected the value of the temperature measured by the defrost probe can not be modified but only read Available on models Y and C dC time basis Modifies the unit of measure used to count the times for parameters dI defrost interval and dP defrost duration The possible values are 0 dI expressed in hours and dP in minutes 1 dI expressed in minutes and dP in seconds Parameter dC 1 can be useful to test the
55. ing conditions The power line must not be connected to the actuators and must not be near other connections which may cause high intensity disturbance In case of doubt and to guarantee conformity to electromagnetic immunity standards an insulating transformer with the characteristics described in the previous point is recommended If more than one control with a 12Vac power supply is connected to the same transformer the polarity of the wiring must be checked in the sense that each terminal of the transformer must be connected to the same terminal of all the controls In this case conformity to the EMI standards must be evaluated by the manufacturer installer 3 2 3 General warnings installation and connection environments Avoid mounting the boards in environments with the following characteristics e relative humidity over 90 or presence of condensation heavy vibrations or knocks exposure to continuous jets of water exposure to aggressive and polluting atmospheric agents e g sulphur and ammonia gases saline mist smoke which may cause corrosion and or oxidation high magnetic and or radio frequency interference thus avoid installation near transmitting antennae exposure to direct sunlight and atmospheric agents in general large and rapid fluctuations in ambient temperature environments where explosives or mixes of inflammable gases are present exposure to dust formation of corrosive patina with possible oxidation an
56. ing off off post dripping e Off compressor request stand by flashing e continuous cycle stand by flashing continuous cycle running flashing in 2 cycles Tab 5 1 The symbol lt gt indicates that the LED can be either on off or flashing according to the other parameters and environmental conditions temperature set point differential etc The general description on the status of the LEDs provided above is thus valid The alarm LED is on only during an alarm and goes off automatically if the alarm is auto reset or following a reset from the keypad if the alarm is no longer present Also see Tab 7 1 1 the continuous cycle signal is shown on the compressor LED by a special sequence two flashes and a long period with the LED ON Cod 4030221881 rel 1 5 26 10 10 32 plug in 6 PARAMETERS MODIFICATION The instruments in the PJ32 series are managed by a microprocessor which allows the operation of the control to be adjusted to effective needs For this purpose there are special operating parameters These parameters have been grouped into two families e frequent parameters hereafter indicated as type F e configuration parameters type C whose selection is protected by a code called the password to prevent unwanted tampering Each parameter can be defined as a frequent parameter or a configuration parameter by setting it using the serial connection or the programming key The parameters can be
57. ion OO The following connections must be respected Serial serial adapter shield connect to adapter GND and module line 1 connect to adapter Rx Tx and module line 2 connect to adapter Rx Tx and module At the end of the line on the last RS485 module connect the 120 Q terminal resistor TRF 230 12Vac between terminals and _RS485 serial adapter 00 O us OO Serial Fig 8 2 1 Cod 4030221881 rel 1 5 26 10 10 40 plug in 8 2 2 Installation The mounting of the RS485 serial module uses a standard DIN rail for wall mounting an adapter is supplied DIN rail plate to fasten to the wall onto which module is mounted The module instrument connecting cable is supplied with the module and is 50 cm long the RS485 module should thus be located at a distance that is compatible with this connection which can not be extended The electrical connections to be made are the following e module instrument connecting cable 50 cm long connected to the connector on the Top version plug in instruments e 230Vac mains power connections to terminals 1 and 2 as in Figure 8 2 1 indicated by 230Vac on the module e RS485 serial connection on terminals 3 4 5 as in Figure 8 2 1 indicated by and on the module Warning The serial adapter recommended for the connection is a serial ada
58. ith fixed terminals and fastening only using rear bracket and without serial connection the power supply can be one of the following 230Vac 115Vac or 12Vac Vdc the field of measurement for all models is from 50T90 C 50T 127 F with resistive NTC probe a PTC probe is available with the same field of measurement for one model only PJ32S Eco digital input from free contact in models where featured it is an alternative to the second probe relay outputs available with three different current ratings 5A 8A and 12A for resistive load 1 1 1 PJ32S This represents the ideal solution for the management of static refrigeration units that is without fan on the evaporator operating at normal temperature above 0 C This instrument in fact performs the functions of thermometer displaying the temperature of the unit and electronic thermostat activating the compressor or the electrovalve in the case of multiplexed units so as to maintain the required temperature Furthermore it handles automatic defrost using the forced shut down of the compressor and safety functions through management of the time settings e All the S models use just one probe for the control functions AMB T and feature a changeover relay contact for the control of the actuator COMPRESSOR e In some models PJ32S00 or SOP a second probe can be connected to display the product storage temperature this probe does not affect control e There is
59. ivated 8 3 9 Cancelling the alarms In the event of the HA or HF alarm signal the signals can be reset both the signals and the recording of the status can be cancelled completely e press the DM for 2 seconds to turn off LED G silence the buzzer and deactivate the alarm relay if present The display still shows the HA or HF alarm status segments and in the figure and the alarm code e use the parameter to to completely cancel the pending alarms signals and status recording variables Warning resetting the signals or the entire status of alarm cancels the signals requested by the HACCP module if other alarms detected by the plug in instrument are present some signals may remain active Cod 4030221881 rel 1 5 26 10 10 47 9 TECHNICAL SPECIFICATIONS plug in models PJ32S PJ32X PJ32Y PJ32C POWER SUPPLY very low voltage 12Vac 10 50 60Hz 12Vdc 11 to 16Vdc 230Vac Vdc 10 15 50 60Hz 115Vac Vdc 10 15 50 60Hz low voltage rated power VA accuracy with reference to the type of probes CAREL NTC C 1 PTC C I lt 3 CAREL NTC 10 K at 25 C type of control probe PTC 985 Q at 25 C type of defrost probe CAREL NTC 10 K at 25 C PTC 985 Q at 25 C control range 50 to 90 C 50 to 127 F operating conditions 10 to 50 C 8096 RH storage conditions 20 to 70
60. k 0 59 min 0 tr j HAalmdeay 0 127 min 0 to global reset of alarmsHAandHF 0 1 0 o t1 8 jdefrostdayofthewek 0 10 0 O t1 8 defrosthus 0 23 hows 0 t1 8 defrostminutes TT 59 min 0 Tab 8 3 6 1 tu day of the week of the internal clock Displays Sets the day of the week for the clock The possible values are from 1 to 7 corresponding to Monday Sunday in order th hours of the internal clock Displays Sets the current hours for the clock Values from 0 to 23 t minutes of the internal clock Displays Sets the minutes for the clock Values from 0 to 59 The setting of the internal clock is important for the correct recording of the HA and HF alarms the times of which are also recorded Cod 4030221881 rel 1 5 26 10 10 44 plug in tr added HA alarm delay This parameter is saved in the HACCP module and is different from the alarm detection delay parameter Ad of the plug in instrument The HA alarm detection delay is the sum of the two tr Ad Warning if tr 0 the detection of the HA and HF alarms is disabled Def 0 null delay and HACCP functions disabled to global reset of alarms HA and HF This parameter has two functions e display of the status of alarms HA and HF 1 alarm present e reset the alarms if set to zero The parameter is displayed only if there are alarms present otherwise it is
61. lay and range limit 1 fast a RE E AN 4 selection of probe to display 0 ambient 1 defrost selection C F 0 C px epp o rd contro differential ysis LF 9 39 C i minimum set allowed tothe wer C 39 iz s cw x macimim salone e ue TE 5 ur s c enable alarm Ed I acon vino SORTER Sa ET NENNEN rL Direct Reverse operating mode note only valid for models S A OT I I EA ON cl minimum time between 2 successive starts of the compressor C 0 15 0 min c2 minimum compressor offtim CP C 0 15 o min c3 minimum compressor on time CP CT CO I5 o mn c4 Duty Cycle safetyrelayONtime C O 100 o mn cc continuous cycle duration 4C 0 I5 4 hours c6 alarm bypass time after continuous cycle C O 15 2 ous dO type of defrost 0 heat el 1 gas 2 heat el time 3 gas time Bo ee feed es La feat even edema Fo Des 38 pesi dt end defrost temperature F 50 127 4 CF HI d0 3 d4 defrosting at instrument on 1 ye ss Cid COO 1 o a5 defrostdelay i 1 1 c o re o mi d6 display off during defrost Q ye c o 1 1 dd post defrost drippingtime F ol ss 2 mi d8 alarmbypasstimeafterdefrosting F o0 t15 1 hous d9 defrost priority over minimum compressor times I yes C
62. lf this signal can be used as a pre alarm for the subsequent signal that the total time has been exceeded Ad tr which determines the actual HA alarm The two parameters allow a maximum duration of 326 minutes to be set Any alarm event involving the control probe of the plug in instrument EO is considered equivalent to the temperature being greater than the threshold and thus also determines a HA alarm signal after the set delay time When the HA alarm is detected the following information regarding the status parameters is recorded e maximum temperature reached during the alarm above SET AH e time the alarm event started e duration of the alarm when the alarm is in progress the current duration is measured e number of events HA detected In the case of a series of alarm events the information on the alarm is updated e the temperature involves the highest value of all the events recorded e the time refers to the last event e the duration is the longest of all the events recorded e the number of events is increased by 1 HF alarm Occurs when after a power failure for an extended period more than one minute the control temperature upon resumption of power is above the set maximum SET AH The detection if this alarm is enabled as for the HA alarm AH gt 0 and tr gt 0 The delay times in this case are not considered as the detection of the alarm is instantaneous if the power failure lasts longer than Ad and Ad
63. lowed above the set point working point Per all models high temperature relative alarm set point value of AH Note that changing the set point automatically changes the high temperature alarm in that maximum difference allowed remains the same AH The high temperature alarm also has an automatic reset When the temperature falls below the threshold value A0 the alarm signal automatically stops Def AH 0 high temperature relative alarm inhibited Available on all models Ad temperature alarm delay Indicates after how many minutes the temperature alarm is signalled from when it is detected If the temperature after the delay Ad is back within the allowed limits the alarm is not signalled Setting a delay to signal of the temperature alarms may help eliminate false alarms due to interference on the probe signal or situations lasting a short time for example opening the cold room door briefly The temperature alarm delay has no effect on two special functions defrost and continuous cycle To delay any temperature alarms after these functions parameter d8 for defrost and c6 for continuous cycle must be modified Remember that during defrost and continuous cycle no temperature alarms are generated Def Ad 0 instant temperature alarm Available on all models A4 Multifunction digital input configuration The MULTIFUNCTION digital input can assume different meanings according to the value attributed to this parameter and
64. lue SET AH and the alarm detection is enabled tr HACCP alarm detection delay time if set to 0 disables the detection of alarms HA and HF as above if set to a value gt 0 means the delay time is equal to Ad tr Ad is the alarm delay time parameter of the connected plug in instrument tu th t setting the clock day of the week hours and minutes of the internal clock to display parameter and reset alarms During installation some HACCP alarms will probably have to be cancelled from the start up of the machines Setting the value to 0 resets all the pending HA and HF alarms including all the variables for recording the status of the alarms For a complete description of the parameters please refer to the paragraph HACCP module parameters Cod 030221881 rel 1 5 26 10 10 43 plug in 8 3 4 Parameters description The HACCP module uses some parameters from the plug in instrument and its own parameter for the alarm recognition algorithm and produces a set of variables for recording the HA and HF events if these occur It also features parameters for setting the clock and entering up to eight defrost events at programmed times All the parameters can be displayed and modified using the display and the buttons on the connected plug in instrument The parameters can be accessed using the t parameter on the plug in instrument when displaying the parameters some segments of the left most digit are used as indicate
65. m that is the ambient probe is short circuited or disconnected this parameter ensures the operation of the compressor until the fault is resolved In practice the compressor not being able to be activated according to temperature due to the probe fault works cyclically with an ON time equal to the value assigned to parameter c4 in minutes and a fixed OFF time of 15 minutes There are two values for c4 which create special conditions If c4 0 in the event of an ambient probe fault the compressor will be always off if c4 100 the compressor will remain always on and the 15 minute off time is not considered e For other values of C4 at the moment a probe error EO is detected the duty setting cycle starts from the current status of the compressor 1 if ON it remains ON for the set time C4 considering the time it has already been ON 2 if OFF it remains OFF for the OFF time again considering the time it has already been OFF The time settings for compressor C1 C2 C3 are in any case always respected e If the control probe error occurs when the control is defrost mode or continuous cycle the control instantly exits this status and activates duty setting To re activate the defrost or continuous cycle operation the ambient probe must be reset Remember that in the event of ambient probe errors manual defrosts can not be performed If the probe error is no longer present the machine returns to normal operation The compressor again
66. n INSTALLATION and the paragraph Special and general warnings 7 3 1 Loading the default parameters The default values of the parameters can be restored by following the procedure described below e disconnect power to the instrument KA e press and hold the and 5 buttons and reconnect power to the instrument e the display shows the message followed by CF e after some seconds the instrument will start working according to the default configuration Any of the F and C parameters which differ from the default configuration must be modified IMPORTANT WARNINGS e the procedure described above resets the instrument and assigns the default parameters As a result all modifications made to the operating parameters will be lost e given the delicacy of this operation the procedure must be performed by specialist personnel This procedure does not damage the instrument but rather resets its original purchase configuration Therefore if the operating parameters have been modified in a disorganised fashion to the point where the control is unworkable it can be reset to its original configuration e the setting of level F visibility for the parameters is not modified by the procedure e ifa programming key is used the reset operation is much simpler as long as the key contains the required configuration or it can be copied from another instrument programmed in the same way In this case the visibility flags are updated Cod 4030
67. n return of the normal power supply conditions the display and the LED are reset Cod 4030221881 rel 1 5 26 10 10 14 plug in TRF only versions 12Vac O OO PJ32 OO MAIN O Serial LINK Fig 3 2 1 1 3 2 2 Special warnings For the direct connection of the instruments and the layout and checking of the wiring the following warnings must be carefully read and the diagrams adhered to errors in connection can cause danger to the safety of the user and damage the instruments and connected components Also remember that the units must be fitted with all the electromechanical safety devices required to ensure correct operation and the complete safety of the user For the 12Vac versions if the power supply available e is mains power a safety transformer is required CAREL code TRA12VDE01 or TRA12VDEO0 to guarantee the double insulation between the power supply and the low voltage electronics inside If required the protective fuse placed in series with the primary 32 mAT for code TRA12VDEOO is indispensable The connection between the transformer and the instrument must be as short as possible e is already low voltage but not 12Vac a suitably rated adapting transformer must be used double insulation between primary and secondary and suitable surge features on the primary 2000V for applications in industrial environments e is12Vac the instrument can be powered directly evaluating the follow
68. nal RS485 serial module allows the plug in instruments to be connected to the CAREL supervisory network providing complete control and monitoring of the operation of the plug in instruments connected The system features the possibility of connecting up to 200 units with a maximum total connection length of 1000 m Connection to the supervisor requires the standard accessories PC485KITO0 and a termination resistor of 120Q to be placed on the terminal block of the last instrument In respect to the RS485 serial networks with IR32 instruments the serial module provides electrical insulation between the serial network ground and each connected instrument thus significantly reducing noise problems in larger installations Wiring example in the case of serial connection of the instruments MAIN 230Vac mains power TRF 3VA 12Vac transformer for PJ32 RS485 RS485 serial module for plug in RS485 module Land 2 230Vac power 3 RS485 line 4 RS485 line 5 RS485 ground and shield terminals Components for serial connection to a MAN s e lt 0 120 Ox supervisor system Ine TRF 230 12Vac shield PCA85KITO00 serial adapter from RS485 to RS232 for connecting to a PC or CAREL supervisor network complete with RS232 serial adapter and mains power supply RS485 serial adapter serial adapter with m 00 twisted pair and shield for RS485 ii connect
69. nection with the following external options e parameter copy key allows the parameters to be duplicated and configured e HACCP module used to record temperatures and alarms e RS485 serial adapter module for connection to a supervisor Display of second probe In the models with two probes the measurement of the second probe can be displayed instead of the first control probe This function can be used to display the product storage temperature the defrost mode in this case is only by time Fastening The fastening method used for the economical models Eco uses a rear panel fastening bracket while all the other versions Top also feature the possibility of fastening from the front panel using two screws Electromagnetic compatibility The plug in series conforms to EU standards on electromagnetic compatibility e for appliances for domestic use EN55014 2 and EN55014 1 e for residential commercial and light industrial environments EN50082 1 and EN50081 1 e for industrial environments EN50082 2 and EN50082 1 e Regarding safety it conforms to standards EN60730 1 and EN60730 2 9 C The CE mark confirms the quality and the safety of the plug in series guaranteed by the CAREL ISO 9001 certified design and production system Cod 4030221881 rel 1 5 26 10 10 9 plug in 2 HARDWARE STRUCTURE The instruments in the PJ32 series are temperature controls used to manage refrigeration units showcases and display cases
70. nly to display the temperature of the food The use of the second probe for this purpose means that it can no longer be used to control defrosting the corresponding parameters must be modified as a consequence The parameter 4 only selects the value to be displayed all the other display and control modes remain unchanged In the versions with just one probe ambient the parameter when present must always be zero 0 Def 0 display ambient probe Available on models Y C and S with two probes Warning the S models with two probes have been designed only to use the second probe for the measurement and display of the food storage temperature Food Probe To manage the second probe these models are in fact programmed as Y models with all the corresponding parameters it is clear that they must be set so as defrosting is not enabled or if necessary only timed defrost d0 2 dI 0 dt 50 furthermore if the second probe is not used it must be disabled 4 0 and d0 2 to avoid the signal El probe alarm 5 C or F selection Defines the unit of measure used for the control and the display 0 degrees centigrade 1 degrees Fahrenheit Warning when changing from one unit of measure to the other all the values of the temperature parameters must be modified in the new unit of measure Def 0 operation in degrees centigrade Available on all models 4 5 r temperature control parameters control parameters type min max uom
71. obes NTC or PTC have no polarity so the order of connection of the ends is not important e avoid direct contact with the internal electronic components Wiring diagrams for multiple units wiring examples for the serial connection of the instruments MAIN mains power supply 230 or 115Vac Cod 030221881 rel 1 5 26 10 10 15 plug in Serial serial connection to the supervisor system TRF 3VA transformer MAIN n RS485 serial adapter E D a RS485 serial adapter O a RS485 serial adapter A O only on last module Fig 3 4 2 1 WARNING the diagrams show the serial connection including the RS485 serial interface adapter see options which is external to the instrument and must be powered separately Versions with 115 and 230 Vac power supply are also available for the serial adapter For reasons of EMI compatibility a 3VA transformer TRF in fig 3 4 2 1 see options is required for each PJ32 instrument with 12Vac power supply Cod 030221881 rel 1 5 26 10 10 16 3 2 4 Electrical connections PJ32 12 Vac de SERIAL amp HACCP power EIN SUPPLY PROG KEY 9 8 Ja 7 6 5 230 Vac a N N 115 Vac S T k 12 Vac dc uz SERIAL amp HACCP LINK POWER SUPPLY PROG KEY
72. odels featuring 1 2 3 relays e ergonomic three button keypad Furthermore new functions and characteristics have been introduced e probe inputs for NTC or PTC different codes e display of operating status cooling defrost alarm using a clearly visible and easily recognisable signal thanks to the three buttons with back lighting highly efficient red LED display innovative system for fastening the instrument from the front panel using two screws front frames in various colours customised upon request external options available such as HACCP module and optically isolated RS485 serial module quick programming of the control using hardware key even when the instrument is not powered possibility to modify the list of parameters selecting each parameter as a frequently used or password protected parameter electrical connections using removable screw or crimped or fixed screw connectors power thermostat version with 12A resistive relay complete range with power transformer for the 115 to 230Vac versions Cod 4030221881 rel 1 5 26 10 10 7 plug in 1 GENERAL CHARACTERISTICS 1 1 Models available The various models are differentiated according to the following functions and performance operating mode and number of inputs and outputs for versions S Y X and C complete versions hereafter Top with serial connection fastening from front panel removable terminals compact versions hereafter Eco w
73. oint is modified using the keypad the value set becomes negative with the same value in this way any modifications to the parameters from the initial set up can be checked Using the programming key the minus sign can be cancelled Def H5 value depending on the model Available on all models Always visible at level F Warning the values from 0 to 31 are used by CAREL to identify the basic models t parameter for expansion modules Displays and modifies the parameters present on the optional RS485 serial modules and HACCP module The operating mode is described in the manuals for the optional modules Available on all models Cod 4030221881 rel 1 5 26 10 10 3l plug in 5 OPERATING STATES The indication LEDs can have 3 states e off when the function indicated or the actuator in question is not in operation e on when the function indicated or the actuator in question is in operation e flashing when the operation is blocked by an alarm event by a delay pending or by a specific status of the multifunction input There are however special machine conditions in which the status of the signal LEDs are not immediately recognisable For convenience we have shown as follows the states of the LEDs in these operating modes special states comp LED def LED interval of defrost normal off operation defrost request stand by e flashing defrost in progress on dripp
74. on or off of the actuator controlled normally a compressor the button is back lit by a green LED and is available only on the Top models the button is backlit by LED or the graphic symbol appears on the display The status of the LED can be the following to indicate always on continuous flashing request pending for compressor activation Tab 2 3 1 oc qa amtii 83 5 Alarm signal the button is backlit by LED or the graphic symbol R appears on the display flashing with 2 cycles and a pause continuous cycle on D Fig 2 3 2 Q Defrost in progress the button is backlit by LED or the graphic symbol D appears on the display LED The status of the LED can be defrost in progress continuous flashing request pending for defrost Tab 2 3 2 THE LED DISPLAY SHOWS ONE OF THE FOLLOWING PIECES OF INF ORMATION ACCORDING TO THE FUNCTION IN PROGRESS e innormal operation value measured by the ambient probe or the second probe e when setting parameters code of the parameter or the associated value e during an alarm event flashing code of the alarm detected alternating with the temperature value The temperature measured by the probe is displayed with resolution to a degree C or F The display range for the temperature is 50T90 C or 50T127 F For the parameters the values can vary from 99 to 199 and in some cases from 127 to 127 The unused segments of the left most digit a
75. operation of the defrost function with reduced times Remember however that if the defrost requires the compressor to be on hot gas defrost and parameter d9 1 the compressor risks being damaged due to an excess of start ups in a short time Parameter dC 1 is on the other hand very useful in the event where versions Y and X need to be used to manage air driers The defrost cycle thus becomes the condensation discharge cycle which must occur at close intervals minutes and for very brief durations seconds Def dC 0 that is dI defrost interval in hours and dP maximum defrost duration in minutes Available on all models 4 8 A alarm management parameters alarm parameters type min max uom def C 0 0 AO alarm and fan differential 02 0 5 C F 19 C F AL low temperature relative alarm difference from set 127 C F 0 AH high temperature relative alarm difference from set 127 C F 0 Ad temperature alarm delay 199 min 120 aO ajna m m ojojojojo A4 multifunction input configuration 5 0 AT external alarm detection delay A4 1 Multifunct Input 199 min 0 Tab 4 8 1 A0 alarm and fan differential Represents the differential used to activate the high and low temperature alarms AL and AH see figure below and fan management see parameters F In the case of an alarm as seen in the figure the value of A0 determines the actual activation of th
76. or irrespective of the temperature and the set point Setting this parameter can limit the number of activations per hour For example if the maximum number of activations allowed per hour is 10 simply set c1 6 to ensure this limit is respected Soy Def c1 0 no minimum time between two activations richiesta inserimento insertion request M L Available on all models compressore compressor t Fig 4 6 2 k Cod 4030221881 rel 1 5 26 10 10 22 plug in C2 minimum compressor off time Sets the minimum time in minutes that the compressor stays off The compressor is not re started until the minimum time selected c2 has passed since the last shut down This parameter is useful in ensuring pressure equalisation after the shut down in the case of systems with hermetic and scroll compressors Er A Def c2 0 no minimum OFF delay time richiesta inserimento I f insertion request y SORE Spt Available on all models compressore compressor t Fig 4 63 c3 minimum compressor on time Sets the minimum time the compressor stays on The compressor is not shut down unless it has been on for the minimum time selected 1 AUT ON Def c3 0 no minimum operation richiesta inserimento P nseni I Available on all models insertion request VOLA Sm e e OFF ON compressore compressor OFF t E Fig 4 6 4 c4 duty setting or safety probe In the event of the control probe fault alar
77. ous or special operating conditions nennen ennt a tree tn tenete a i iiia 7 2 Description of the main signals and alarms 7 3 Dataserrore sato lafabia ii ie eee ue 3 33 lt Eoadine the default parameters m od erret EE A RE Ir 7 4 Troubleshooting 8 1 8 2 8 2 1 8 2 2 8 2 3 8 2 4 8 3 8 3 1 8 3 2 8 3 3 8 3 4 8 3 5 8 3 6 8 3 7 8 3 8 8 3 9 Key for copying the parametets 1 2 1 ettet et tete inen ti ettet eese id tee eee Serialiadapter for RS485 Network ii eant e pene Hee Pen bd gei ee gU a e Pi peel See dee pe tide idet General characteriStlCs eter reete cer eto ree EY UE e relier eret RILENTO eere tere evum d IEEE Setting the operating parameters oi AR UP RUBRI RH IRE li e lie rio ui Serial adapter paraineters uu rone emn an UU dede ll i lele ili Udi Loi Additional HACCP imod le ili Dementia n HO OUR DNE ARN General characteristics 4 is hte dte t et it e o eer dete e erdt det i eb id ete ire ies Installations seri S oben gta RURAL oats sak Setting the main operating parameters Parameters AeSCriptiOn is ires uet cd erret eye tb een pe o D Ro e Eo stages DO Re Po a prenne pete aie tede D dr Parameters of the plug in HEUTE HACCP module part meters era Rari Parameters corresponding to the recording of the HA and HF alarms i 46 Operating mode and alarmi signal aan ira il
78. probe When the input is not present the value of A4 must be zero 0 indicated by the dash in Tab 4 8 2 Cod 4030221881 rel 1 5 26 10 10 28 plug in AT external alarm detection delay multifunction input Sets the delay in minutes for detecting the external alarm when A4 1 Def A720 Available on all models 4 9 F evaporator fan management parameters alarm parameters type min max uom def FO fans subject to the fan controller 0 no 1 yes 0 1 flag 0 F1 fan shut down temperature effective temperature C F 50 127 C F 5 A oojnoamijn F2 stop fan when compressor off 0 no 1 yes 0 1 flag 1 F3 stop fans for defrost 0 no 1 yes 0 1 flag 1 Fd post dripping off 0 15 min 1 Tab 4 9 1 F0 fans subject to the fan controller The fans can be subject to the fan controller which manages them according to the temperature measured by the defrost probe Alternatively the fans are always on during a defrost see parameter F3 with the possibility of switching them off when the compressor is off see parameter F2 during the dripping period see parameter dd and for a further post dripping period see parameter Fd The values allowed for this parameter are F0 0 no In this case the fans are not subject to the fan controller and are always on except for the limits set by F2 F3 Fd and if necessary by dd F0 1 yes The fans are subject
79. procedure Warning the parameter rd is normally visible at level F if not enter the password to access the type C parameters 6 2 Accessing the parameters To access the type F parameters 1 press the DAMM for more than 5 seconds see on previous page 2 the display shows the code of the first modifiable parameter PS A Dg 3 usethe and or e buttons to scroll all the type F parameters To access the type C parameters 1 access the type F parameters select parameter PS password using the button 2 the display shows 00 3 LIMES press the Or button until 22 is displayed password 4 confirm using D 5 the display shows the code of the first modifiable parameter all F and C parameters are visible Cod 4030221881 rel 1 5 26 10 10 33 plug in 6 3 Modifying the parameters After having displayed the first parameter either type C or type F proceed as follows A vo 1 press or to reach the parameter which needs to be modified 2 press B display the associated value A 3 increase or decrease the value using the or US buttons until the required value is displayed 4 press B temporarily save the new value and return to the display of the parameter code A RA 5 press s or Y again to reach the next parameter which needs to be modified repeat the operation from point 2 6 4 Saving the new values assigned
80. pter with twisted pair and shield 0 5A rating with a 1 5mm cross section e g AWG 22 24 The last instrument on the line must be fitted with the 120 terminal resistor 8 2 3 Setting the operating parameters The serial module features two operating parameters for setting the speed of serial transmission and to assign a static address to the module when the function is enabled All the parameters can be displayed and modified using the display and the buttons on the connected plug in instrument The parameters can be accessed using parameter t on plug in instrument For this operation parameter HO on the plug in instrument must also be set 8 2 4 Serial adapter parameters parameters type min max uom def HO serial address plug in instrument transmission speed baud rate local address static H0 serial address plug in instrument parameter The setting of this value defines the address of the instrument in the supervisory network and is required for the operation of the adapter when other instruments are connected The value 0 is reserved can not be used in the supervisory network the connected instruments must all have different addresses the allowable values range from 1 to 199 Def 1 Available on all models tS transmission speed Defines the speed baudrate of communication between the adapter module and the supervisor PC With the parameter set to 1 the speed is 9600 baud with a value of 0 the speed
81. re normally always off expansion modules Serial 485 and HACCP can be used to signal states or parameter programming modes For a complete description please refer to the expansion module manual 2 3 1 Using the keypad Three buttons 5 6 and 7 in Fig 2 3 1 are used to perform the activation and deactivation of the instrument s operating states and set the parameters The use of the buttons can be divided into two different situations one in of normal operation and the other to modify the parameters For each button the following are the possible actions associated with both possibilities In normal operation and if pressed for more than 5 seconds e activates deactivates continuous cycle compressor In modify parameter mode e moves from one parameter to the next e increases the value of the parameter In normal operation e silences the audible alarm only if featured e displays and or sets the Set point e if pressed for more than 5 seconds not during an alarm accesses the menu for setting type F parameters frequent RA e if pressed when turning on the instrument together with the E button activates the parameter RESET procedure In modify parameter mode e displays the value of the selected parameter exits the display e if pressed for more than 5 seconds in modify parameter mode saves the changes In normal operation ME e if pressed for more than 5 seconds starts a manual defrost if enabled v In modify p
82. rost SPDT PJ32X 110Vac 1 NTC probe 1 digital input comp relay NO defrost SPDT Tab 2 2 5 Top model with 3 relays 2 probes removable terminals serial connection PJ32C 230Vac 2 NTC comp relay 8A NO defrost SA NO fan SA NO PJ32C00000 PJ32C 110Vac 2 NTC comp relay 8A NO defrost SA NO fan SA NO PJ32C00100 Tab 2 2 6 WARNING the versions of instrument with display colours other than red are currently not available Cod 030221881 rel 1 5 26 10 10 11 plug in 2 2 2 NTC and PTC probes All PTC and NTC probes conforming to the CAREL standard can be used with resistance values of 985 Q at 25 C for PTC and of 10 kO for NTC Below are some codes of the more common versions description operating range index of protection CODE NTC probe 6x15 mm bulb plastic 50T50 C IP67 NTCO HPOO NTC probe 6x40 mm bulb metal 50T 100 C IP67 NTCO W 00 NTC probe duct 10T70 C IP40 ASDTO011000 Tab 2 2 2 1 2 2 3 Accessories Transformers only for instruments with 12Vac power supply description code TRA 12 3 VA 240 12Vac without fuse on the primary TRAI2VDEOO TRA 12 3 VA 240 12Vac with fuse on the primary TRAI2VDEOI Tab 2 2 3 1 Serial adapters optically isolated RS485 serial module PJOPZ48500 additional module for HACCP PJOPZHACPO Tab 2 2 3 2 Programming key description code programming key for plug in PJOPZKEY00 Tab 2 2 3 3 Plug
83. rost This may cause overloads To avoid this parameter d5 can be exploited which allows a delay to be set before the defrost starts a delay which obviously must be different for each unit Def d4 0 the instrument does not perform a defrost when the unit is turned on Available on all models d5 defrost delay at instrument on or from multifunction input Represents the time which must elapse between when the control is turned on and the start of the defrost In the case where the digital input is used to enable the defrost see parameter A4 2 or to start a defrost from an external contact see parameter A4 3 this parameter represents the delay between the enabling of the defrost or its request and the effective start of the cycle The defrost from digital input see parameter A4 can be exploited to perform defrosts in real time Simply connect a timer to the multifunction digital input again see parameter A4 The defrost will be activated when the timer contact is closed In the case where more than unit is connected to the same timer it is recommended to set parameter d5 to delay the defrosts to a different time for each unit Furthermore to avoid unnecessary defrosts controlled by the instrument s internal clock it is suggested to set parameter dI 0 only manual defrosts from the keypad or multifunction contact or to set dI to a value which is greater than the maximum set interval allowing operation with safety defrosts in respect to the
84. rument set values of all the parameters and visibility flags allowing them to be transferred to other instruments as long as these have the same hardware configuration same code The key consists of a remote control type box with a connecting cable to the serial port of the instrument and features an on off button and a two colour signal LED red green It is powered by a 12Vdc alkaline battery such as the Philips VR32 or Duracell MN21 or equivalent The key must be connected to the instrument when it is off it doesn t need to be powered as the power to the instrument is supplied by the key itself Pressing and holding the activation button transfers the data The two colour LED signals the operating status indicating the execution and completion of the data transfer and any errors The maximum duration of the operation is around 12 seconds during this period the instrument remains off after which it starts in normal mode During the first 12 seconds the consumption of current is reduced in that the instrument s LEDs and display are not turned on due to their high consumption The button should not be pressed longer than the time required to complete the operation so as not to discharge the battery too quickly The possible operations are the following 1 read the parameters from the connected instrument and save them to the key This operation is always possible and is activated by setting the two dip switches 1 2 to position OFF an
85. s 3 resistance values for each temperature e Rga is the typical resistance value at the indicated temperature e Rmin is the minimum value e Ryaxis the maximum value In order to be able to check probe operation the table shows values corresponding to a number of temperatures Table of temperature resistance values for the CAREL NTC temperature probe Nominal value 10 kQ at 25 C temperature CC Rmin KO Raa kO Ruax KO 40 181 10 188 40 195 90 0 26 74 27 28 27 83 20 11 95 12 09 12 23 50 4 08 4 16 4 24 Tab 9 2 2 For the PJ32 controllers featuring PTC probe input refer to the table of temperature resistance values for the CAREL PTC temperature probe NOMINAL VALUE 9900 at 25 C Cod 030221881 rel 1 5 26 10 10 temperature CC Ruin Q Rita Q Rmax Q 40 545 562 578 0 792 807 820 20 944 952 962 50 1178 1196 1213 Tab 9 2 3 49 plug in 10 DIMENSIONS Note Figures 1 and 2 show the two versions of the instrument The first shows the status LEDs inside the display area while the second shows the backlit silicone buttons 3 x 3 3 Front fastening system Rear fastening system by bracket OO OOL Fig 10 1 dimensions mm fixed screw
86. s defrosts Warning the minimum duration must be 0 5 seconds timer Key t impulse from the timer to start the defrost dP 1 maximum defrost duration unit 1 defro d5 2 defrost delay from external contact for unit 2 This dP 1 unit 1 must be greater than dP 1 to avoid defrosting at the same time d5 2 defrost The same is true for d5 3 and dP 3 for unit 3 dP 2 unit 2 d5 3 defrost dP 3 unit 3 defrost request Fig 4 8 2 A4 4 curtain switch night time operation Setting parameter A4 4 manages the contact which signals the closing of the curtain on showcases or modifies the set point for night time operation With the contact closed the set point is modified by the value r4 set point variation for night time operation A4 5 Only for SIA mod A4 5 active direct reverse function Other models A4 5 0 inout no active The following table summarises the functions assumed by the multifunction digital input according the setting of A4 value parameter A4 meaning SA ae RE 0 inputnoteewisw eee e i external alarm instant or e enable defrost closed enabled e e 3 start defrostonclosing e e curtain switch or night time operation e e DirecReverseseletion e Tab 4 8 2 Warning parameter A4 is accessible on all models but can only be used on those which effectively have the input in alternative to the second
87. sed of separately 5 inthe event of illegal disposal of electrical and electronic waste the penalties are specified by local waste disposal legislation CONTENTS 1 1 Models avalable eer ERR Loana leali 8 ILL PUB DERE 8 EEZ PIB 2 Y PIS 2K cn ni iaia lie ee tb mb Rete bo Re ORTOS ein 8 11 357 SPINE e i Lit ii etos e Lie tei nt Ete ettet bise toi edet 8 1 2 CliardcteristiCSz s nti rio ezio chic ina eos tees Stes eret cero e Cis pde ed Mee o ee su ca et reed 9 2 1 Meaning of the inputs and Outputs er ERES UE LR ii 10 2 2 Instrument and accessory Codes e tee eoe one bene e enn ee rete i e a te ee ees Pere 11 2 2 1 Codes for the instruments in individual packaging ii 222 NEC and PECprobess cresce Lou lille iu lisa 22 37 SJACCeSSODIES tinti niet iii iii lio li dialer one Min REIS ELE Leni Est A i alri Li 2 3 User interface meaning of operating indicators and LED display 2 3 Using the Keypad out em ttr rote e ee e ORE iR E Pee ear ee eee net 3 1 Mechanicaltinstallati Ons v creemos to one Ier eo al I e ile lor n 14 3 2 Electrical connections iu oot reete cte EATE RR ri eese etes 14 3 2 1 Power supply 3 22 Special warnings 3 23 General warnings installation and connection environments neenetnet enne trennen trennen 15 3 2 4 El ctrical connections PJ32 eet See RR Re RR alal alleata 17 3 3 Setting thedmaimn operating parameters ia nia rca
88. sor control using terminals 1 2 3 relay outputs For instrument codes with two relays the changeover contact is available for defrost control on terminals 1 2 3 and the closing contact for the compressor relay on terminals 3 and 4 Terminal 3 is common for the two relays thus the current at the terminal will be the sum of the two For instrument codes with three relays terminal 1 is used for the compressor control terminal 3 for fan control terminal 4 for defrost control and terminal 2 is the common of all three relays The current at terminal two will be the sum of the three outputs serial the four pin connector is for connection to the RS485 serial and HACCP adapters and for connection of the connection parameter copy key This connection is not present on the Eco models Tab 2 1 1 Cod 4030221881 rel 1 5 26 10 10 10 plug in 2 2 Instrument and accessory codes The definition of the instrument codes is based on two categories one for the simpler and more economical versions Eco and one for the versions complete with all functions Top The main differences between the two versions are that the following are present only in the Top versions e removable terminals in the place of fixed terminals e fastening from front panel using screws e serial connector present with the possibility to connect expansion modules and to the key Warning the options indicated are not all freely modular and so to avoid incomp
89. ssible lack of earnings or sales loss of data and information cost of substitute goods or services damage to things or persons work interruptions or possible direct indirect incidental patrimonial of coverage punitive special or consequential in any way caused damages be they contractual out of contract or due to negligence or other responsibility originating from the installation use or inability of use of the product even if CAREL or its branch offices affiliates have been warned of the possibility of damage INFORMATION FOR USERS ON THE CORRECT HANDLING OF WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT WEEE In reference to European Community directive 2002 96 EC issued on 27 January 2003 and the related national legislation please note that 1 WEEE cannot be disposed of as municipal waste and such waste must be collected and disposed of separately 2 the public or private waste collection systems defined by local legislation must be used In addition the equipment can be returned to the distributor at the end of its working life when buying new equipment 3 the equipment may contain hazardous substances the improper use or incorrect disposal of such may have negative effects on human health and on the environment 4 the symbol crossed out wheeled bin shown on the product or on the packaging and on the instruction sheet indicates that the equipment has been introduced onto the market after 13 August 2005 and that it must be dispo
90. t evaporator probe S with H1 1 and X this parameter represents the effective duration of the defrost Def 30 min Available on all models Cod 4030221881 rel 1 5 26 10 10 24 plug in d4 defrost at instrument on Activates a defrost cycle when the instrument is turned on The request for defrost when the unit is turned on has priority over the activation of the compressor and the activation of the continuous cycle The possible values are 0 no no defrost is performed when the instrument is turned on 1 yes a defrost cycle is performed when the instrument is turned on Forcing a defrost cycle when the instrument is turned on may be useful in special situations e g if the system is subject to frequent voltage drops In fact in the event of power failures the instrument s internal clock which calculates the interval between two defrosts starting from zero is reset If the frequency of the voltage drop were in an extreme case greater than the defrost frequency e g a voltage drop every 8 hours against a defrost every 10 hours the control would never perform a defrost In this type of situation it is better to activate the defrost when the unit is turned on above all if the defrost is controlled by temperature probe on the evaporator so unnecessary defrosts are avoided or at least reduced in time In the case of systems with many units if defrost on start up is selected after a voltage drop all the units will start a def
91. takes on the logic of the control respecting the times C1 C2 C3 C4 j da Def 0 compressor always OFF in the event of ambient probe fault compressore compressor J o Oooo OFF Available on all models t OFF 15 min Fig 4 6 5 cc continuous cycle duration This is the time in hours that the compressor stays continuously on in order to lower the temperature to the set point This function is used when rapid product temperature drops are required for example after loading the store in this phase the temperature can fall below the set point by the value set using parameter AH If cc 0 continuous cycle is not enabled The control exits the continuous cycle procedure after the time set for the parameter cc or when the minimum temperature has been reached see minimum temperature alarm parameter AL Def 4 hours Available on all models c6 alarm bypass after continuous cycle This is the time in hours that the temperature alarm is disabled after a continuous cycle In practice if the temperature of the refrigeration unit after the continuous cycle falls due to inertia below the minimum temperature level set point AL the activation of the low temperature alarm is delayed for a time equal to c6 Remember that at the minimum temperature set point AL the continuous cycle is forced off Def 2 hours Available on all models Cod 030221881 rel 1 5 26 10 10 23 plug in 4 7 d defrost management parame
92. ters defrost parameters type min max uom def dO type of defrost 0 heat element 1 hot gas 2 heat elem by time 3 hot gas by time C 0 3 flag 0 dI interval between defrosts F 0 199 hours 8 dt end defrost temperature set point F 50 4 127 C F 4 dP maximum defrost duration F 1 199 min 30 dC Time basis 0 hour min 1 min s only for dI and dP C 0 1 flag 0 d4 defrost at instrument on O no 1 yes C 0 1 flag 0 d5 defrost delay at instrument on or from multifunction input C 0 199 min 0 d6 display off during defrosting O no 1 yes C 0 1 flag 1 dd dripping time F 0 15 min 2 d8 alarm bypass time after defrosting and or door open F 0 15 hours I d9 defrost priority over compressor protection 0 no 1 yes C 0 1 flag 0 d defrost probe reading F C F Tab 4 6 1 d0 type of defrost Sets the type of defrost for the instruments fitted with defrost relay d0 type of defrost heating element hot gas heat element by time hot gas by time Tab 4 7 2 WIN R o Def d0 0 defrost using heating element Available on models Y X and C Warning for the S models with two probes or with alarm relay a time must be set recommended d0 2 dI interval between defrosts The defrost is performed periodically at an interval equal to the value of dI in hours or minutes see parameter dC The interval dI star
93. the set point This parameter prevents the user from setting the set point higher than the value indicated by r2 Def 60 Cod 4030221881 rel 1 5 26 10 10 21 plug in r3 enable alarm ED For models Y X C With r3 1 the alarm is enabled and indicates end defrost due to the maximum time being reached Warning for the model S with defrosting enabled H1 1 the alarm is not present in that the operation is by time only with compressor off If required the value set via the serial connection must be 0 Def 0 alarm ED inhibited r4 Automatic set point variation in night time operation This parameter is part of the curtain switch parameters when the curtain is closed and as a consequence the digital input connected to the curtain switch is closed the controller automatically increases or decreases the set point by the value assigned to r4 in direct mode cooling and automatically the set point by the value assigned to r4 rL direct reverse operating mode note only valid for models S A Used to select the Operating mode between Direct cooling and Reverse heating rL 0 Direct operation cooling rL 1 Reverse operation heating 4 6 c compressor management parameters compressorparameters type min max uom def C 0 15 min 0 CO compressor start delay at instrument on C1 minimum time between 2 successive starts of the C 0 15
94. the unit returns to the normal operation without performing the dripping phase Upon request for a defrost the corresponding defrost LED starts to flash until the next enabling action closing of the contact This function is useful for example in the case of multiplexed showcases with hot gas defrost These systems must be defrosted by island and thus at any one moment some islands are enabled for defrost while others are inhibited Another use of the function is to prevent defrosting the units available to the public during opening hours Any defrost requests when the contact is open will stay on hold until the closing of the contact A4 3 start defrost from external contact This function allows the defrost to be started from an external contact If the defrost is started using an external contact all the type d parameters selected are valid In particular it may be useful to set dI 0 to enable manual defrosts or defrosts from external contact only excluding defrosts generated by the internal clock This function is useful in the case where real time defrosts are required To perform these simply connect a mechanical or electronic timer to the digital input When the contact of the timer moves from open to closed it enables the defrost request It may be the case as mentioned in the description of parameter d5 that more than one unit is connected to the same timer Selecting a different value for d5 for each unit will avoid simultaneou
95. ts to be counted from the previous defrost beginning If the time is equal to 0 dI 0 the defrost is not performed except when forced from the keypad or digital input During defrosts the temperature alarms are inhibited Warnings possible errors in measuring the times must be taken into account typically 5 and maximum 10 96 Def 8 hours Available on all models For the S models with two probes or with alarm relay this must be set to zero to exclude cyclical defrosts dt end defrost temperature set point For units fitted with end defrost probe Y and C this parameter allows an evaporator temperature to be set at which the defrost is stopped the evaporator temperature is measured by the defrost probe If at the start of a defrost cycle the temperature measured by the defrost probe is greater than the set end defrost value the cycle is not performed In the event of defrost probe failure the control performs a timed defrost with a duration equal to the value set for dP The same is true if the end defrost set point can not be reached the defrost is stopped after a maximum time equal to the value in minutes of dP and the error Ed is displayed if enabled by r3 and stays on until a correct defrost cycle is performed that is one which ends by temperature Def 4 C Available on models Y and C dP maximum defrost duration Determines the duration of the defrost in minutes or seconds see parameter dC For instruments withou
96. ttons until parameter t is selected 3 if the parameter is not visible at the first level access the second level C parameters by entering the correct password and then select t as in point 2 Warning for further information refer to the chapter PARAMETERS MODIFICATION e Transfer from the expansion module with parameter t displayed of the complete description of the first parameter displayed on the instrument for example t S for the baud rate 1 press the E us to display the value of the parameter 2 usethe kil and e buttons to modify the value displayed increasing or decreasing it respectively press the E os again to confirm the modified value and exit the display of the value 3 4 the module then brings up the next parameter and displays its the description for example t 0 for the static address 5 repeat points 1 2 and 3 to display and if necessary modify the value 6 pressing the repeatedly scrolls all the parameters which can be displayed after the last parameter the display starts from the first again The display of t parameters is exited as follows 1 by time out after 30 seconds inactivity of the buttons a RA 2 when displaying the description of a t parameter pressing the 3 or button moves to the next or previous parameter on the plug in instrument The parameters on the module are saved immediately and does not require confirmation by pressing the button for 5 seconds W
97. ul for managing the low pressure alarm It is frequent in fact for the unit to detect a low pressure alarm when first turned on due to the environmental conditions and not a unit malfunction Setting an alarm delay avoids false signals In fact by carefully calculating the delay if low pressure is due to environment conditions low temperature the alarm will automatically return before the set delay elapses The effect on the compressor fans defrost and continuous cycle are the same after the set delay as above Warning as already indicated in the installation instructions to ensure the safety of the unit in the event of serious alarms for example the pressure alarms the unit must be fitted with all the electromechanical devices required to guarantee correct operation according to the standards in force The electronic control on its own can not be used to guarantee safety in the event of serious alarms Cod 030221881 rel 1 5 26 10 10 2 plug in For all models including S with H1 1 A4 2 enable defrost An external contact can be connected to the multifunction input to enable or inhibit the defrost function When the contact is open the defrost is inhibited while it is enabled when the contact is closed If the contact is closed and there is no request from the controller obviously the defrost is not performed If the contact is closed and a defrost is in progress opening the digital input immediately stops the defrost and

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