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1. d4 defrost when switching the instrument on C 0 1 0 S with 1 amp 2 probes X Y C d5 defrost delay on power up or when enabled by digital input C 0 199 min 0 S with 1 amp 2 probes X Y d6 freeze control temperature display during defrost E 0 1 1 S with 1 2 probes X Y dd dripping time F 0 15 min 2 S with 1 amp 2 probes X Y d8 alarm bypass time after defrost F 0 15 h 1 S with 1 amp 2 probes X Y d9 defrost priority over compressor protectors C 0 1 E 0 S with 1 amp 2 probes X Y d defrost probe reading 2 F CIF a S with 2 probes X Y C dC time base E 0 1 0 S with 1 2 probes X Y AO alarm and fan temperature differential E 20 420 CAE 2 M S with 1 amp 2 probes X Y AL absolute relative temperature for low temperature alarm F 50 560 I F 0 M S with 1 amp 2 probes X Y C AH absolute relative temperature for high temperature alarm F 50 150 CFF 0 M S with 1 2 probes X Y Ad temperature alarm delay C 0 199 min 0 M S with 1 amp 2 probes X Y A4 3rd input configuration C 0 11 0 M S with 2 probes X Y C A7 digital input alarm delay C 0 199 min 0 M S with 2 probes X Y A8 enable alarm Ed end defrost by timeout C 0 1 0 S with 2 probes X Y C Ac set point dirty condenser alarm E 50 PISU CE 70 M S with 2 probes X Y AE dirty condenser alarm differential temperature C 0 1 200 CPF 5 0
2. Table 4 A4 10 Probe for dirty condenser alarm Multifunction analogue alarm input and dirty condenser pre alarm using the third probe To enable this function set 1 the third probe see par 2 2 Electrical connections page 9 2 parameter Ac temperature set point above which easy signals the dirty condenser alarm 3 parameter AE temperature differential that together with Ac determines the dirty condenser pre alarm 4 parameter Acd dirty condenser alarm signal delay 5 parameter A4 10 enable the probe and dirty condenser alarm cht dirty condenser pre alarm e indicates that the limit between Ac and AE has been exceeded deriving from the calculation Ac AE 2 see Fig 4 1 e easy continues normal operation e automatic reset if the temperature measured by probe 3 falls below Ac AB e cht is shown on the display alternating with the current temperature CHt dirty condenser alarm e indicates that the temperature set point Ac has been exceeded see Fig 4 1 e the delay time Acd has elapsed e easy stops all functions e the buzzer sounds to mute this press SET or to disable deactivate set H4 1 e CHt is shown on the display alternating with cht and the current temperature Important the CHt alarm see par 5 1 Table of alarms and signals on page 23 can only be reset manually or alternatively by switching the controller off pressing UP for 3 s
3. 7 enable probe 2 alarm M models only In the thermometer models M fitted with two probes setting 7 1 enables the alarm relating to the second probe E1 4 3 Temperature control The following parameters are used to control the temperature St r1 r2 r3 r4 and rd St set point r1 minimum value and r2 maximum value of the set point Parameter St determines the desired temperature to be maintained inside the cabinet or cold room set point Parameters r1 minimum value and r2 maximum set the range of temperatures fir setting the set point Note the set point can be set by pressing the SET button see par Setting the set point desired temperature value page 12 r3 select direct reverse operation Defines the operating mode of the device e r3 0 direct with defrost Used to request the activation of the compressor when the temperature measured by probe 1 rises above the set point This mode also includes defrost also called cooling mode see Fig 4 a e r3 1 direct without defrost Fig 4 a e r3 2 reverse without defrost Fig 4 a Used to request the activation of the compressor when the temperature measured by probe 1 falls below the set point This mode does NOT include defrost also called heating mode see Fig 4 a easy easy compact 030220791 rel 2 0 30 05 2007 Direct mode cooling O Reverse mode heating set point gt gt rd
4. heater with temperature control Y Duty setting function Y Y Continuous cycle function Y Y Relay outputs Cw Aux Up to two analogue inputs for NTC or PTC probes Y Y Multifunction analogue or digital input Y In the models with at least 2 probes display second third probe Y Y Input for CAREL IROPZKEY programming key Y Y Input for external CAREL IROPZ485 connector RS485 network Y Y Buzzer audible alarm signals Y Fixed or removable terminals Y Y Fastening from rear or front Y Y Easy Set rapid instrument configuration selection Y Y Table 1 a Check that this is available on the model in question A Important each of the features should be checked for the model in question 1 2 Models The easy and easy compact controllers differ as regards operation and the number inputs and outputs easy models PJEZS 0 1 6 7 PJEZ X Y PJEZC controllers and PJEZM O 1 6 7 thermometer only easy compact models PJEZS N P controller and PJEZM N P thermometer only Models and features S models PJEZS 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 model in fact performs the functions of thermometer displaying the temperature of the unit and electronic thermostat activating the compressor or the solenoid valve in the case of multiplexed units so as to ma
5. cleaning the instrument only use neutral detergents and water max Cable length 1 km serial 30 m probes 10 m relay The features shown depend on the model Minimum T OFF between two starts must be greater than 60 s Warning do not run the power cable less than 3 cm from the bottom of the device or copper wires the probes for the connections only use J gt 29 The features shown depend on the model Minimum T OFF between two starts must be greater than 60 s 6 3 Electromagnetic compatibilit The easy and easy compact series is compliant with the EU standards on electromagnetic compatibility e for household appliances EN 55014 2 and EN 55014 1 e for residential commercial and light industrial environments EN 50082 1 and EN 50081 1 e for industrial environments EN 50082 2 and EN 50082 1 e as regards safety the devices are compliant with standards EN60730 1 and EN60730 2 9 easy easy compact 030220791 rel 2 0 30 05 2007 Note CAREL CAREL S p A Via dell Industria 11 35020 Brugine Padova Italy Tel 39 049 9716611 Fax 39 049 9716600 e mail carel carel com www carel com Agenzia Agency CAREL reserv
6. Pressing the SET button mutes the buzzer while the code displayed and the alarm relay only go off when the causes of the alarm have been resolved The alarm codes are shown in the table below alarm buzzer and LED alarm description reset ENABLE ALARM easy easy code alarm relay parameters involved compact EO active ON probe 1 error control automatic Y Y El not active ON probe 2 error defrost automatic d0 0 1 4 FO 1 Y v E2 not active ON probe 3 error condenser product automatic A4 10 Y IA active ON external alarm automatic A4 1 A7 Y dOr active ON open door alarm automatic A4 7 8 A7 Y LO active ON low temperature alarm automatic AL Ad Y Y HI active ON high temperature alarm automatic AH Ad Y Y EE not active ON unit parameter error not possible Y Y EF not active ON operating parameter error manual Y Y Ed not active ON defrost ended by timeout on first defrost ended dP dt d4 A8 Y Y correctly dF not active OFF defrost running automatic d6 0 Y Y cht not active ON dirty condenser pre alarm automatic A4 10 Y CHt active ON dirty condenser alarm manual A4 10 Y EtC not active ON clock alarm by setting the time if bands active Y Table 5 a 5 2 Description of the main signals and alarms LED flashing The activation of the corresponding function is delayed by a timer awaiting an external signal or disabled by anot
7. e use the UP and DOWN buttons to scroll the numbers until displaying 22 password to access the parameters e press the SET button to confirm the password e use the UP and DOWN buttons to scroll the parameters The LED corresponding to the category of parameters will be on see Table 5 b e press SET to display the value associated with the parameter e increase or decrease the value using the UP or DOWN button respectively e press SET to temporarily save the new value and display the parameter again e repeat the procedure for any other parameters that need to be modified e press the SET button for more than 3 s to permanently save the parameters and exit the parameter setting procedure Warnings if no button is pressed for 60 s all the changes made to the parameters temporarily saved in the RAM will be cancelled and the easy easy compact 030220791 rel 2 0 30 05 2007 24 CAREL previous settings restored The dAY hr Min parameters are not restored as these are saved instantly when entered If power is disconnected from the instrument before saving the settings pressing the SET button for 3 s all the changes made to the parameters and temporarily saved will be lost Category Initial Icon Probe parameters Control parameters r Compressor parameters C O Defrost parameters d vr Alarm parameters A B Fan parameters F R AUX output configuration parameters H1 AU
8. easy easy compact CAR E L digital electronic thermostats with defrost control User manual IN overs ornuzion PA READ AND SAVE THESE INSTRUCTIONS Technology amp Evolution CAREL WARNINGS CAREL bases the development of its products on decades of experience in HVAC on the continuous investments in technological innovations to products procedures and strict quality processes with in circuit and functional testing on 100 of its products and on the most innovative production technology available on the market CAREL and its subsidiaries nonetheless cannot guarantee that all the aspects of the product and the software included with the product respond to the requirements of the final application despite the product being developed according to start of the art techniques The customer manufacturer developer or installer of the final equipment accepts all liability 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 may based on specific agreements acts as a consultant for the positive commissioning of the final unit application however in no case does it accept liability for the correct operation of the final equipment system The CAREL product is a state of the art device whose operation is specified in the technical documentation supplied with the product or can be downloaded even prior to purchase from t
9. for C models the fan does not start 1 acompressor and fan start delay has been set 2 if FO 1 fan managed by fan controller e the evaporator is hot the evaporator temperature can be read by selecting parameter d dripping in progress F1 evaporator fan control set point too low post dripping delay set 3 it FO 0 F2 1 and the compressor is off dripping in progress post dripping in progress 1 parameter cO 2 parameters FO F1 Fd dd and d 3 parameters FO F2 dd and Fd easy easy compact 030220791 rel 2 0 30 05 2007 28 Table 5 g CAREL 6 TECHNICAL SPECIFICATIONS 6 1 easy technical specifications power supply 230 Vac 10 15 50 60 Hz 115 Vac 10 15 50 60 Hz 12 Vac 10 15 50 60 Hz 12 Vdc 11 16 Vdc rated power 1 5 VA inputs NTC or PTC probes 1 or 3 inputs Digital input as alternative to third probe relay outputs 2 HP relay UL 12 A Res 12 FLA 72 LRA 250 Vac EN60730 1 10 10 A 250 Vac 16A relay UL 12 A Res 5FLA 30LRA 250 Vac C300 EN60730 1 12 2 A NO NC 10 4 A fino 60 C NO 2 2 A CO 250 Vac UL 8 A Res 2 FLA 12 LRA 250 Vac C300 EN60730 1 8 4 A NO 6 4 A NC 20 A CO 250 Vac 8 A relay probe type Std CAREL NTC 10 KQ at 25 C Std CAREL PTC 985 O at 25 C connections screw terminals for cables with cross sect from 0 5 mm to 1 5 mm Plug in terminals for screw block
10. lt gt set point rd Fig 4 a Key 1 compressor request 2 probe 1 Important the operating mode can also be set by external contact connected to the multifunction digital input parameter A4 9 In this case the contact controls operation direct reverse with priority over parameter r3 r4 night time set point delta Value that automatically increases the set point temperature during the night time operation time bands r4 0 night time set point St r 4 gt 0 night time set point St r4 Important 1 to enable night time operation not only does r4 need to be set gt 0 but the digital input must also be enabled and configured see parameter A4 4 curtain switch night time operation or a night time time band enables see par 4 10 Clock and time band parameters page 21 2 night time operation does not necessarily mean at night but rather the time bands in which the value of the set point is modified This usually corresponds to the period in which the refrigerated cabinet is not used shop closed and when the curtain is down rd Control differential Value that is added to or subtracted from in reverse mode the temperature set point rd low values more precise temperature control e high compressor On Off switching frequency in the event of minimum temperature deviations with the risk of causing damage rd high values e less precise temperature control e low compressor On O
11. min A Important the defrost event only involves a defrost call Whether the defrost is effectively run and the duration of the cycle depend on the status of the controller when the call is activated Parameters for setting the night time set point time band nOd Night time set point time band day setting nOd 0 no event set nOd 1 7 Monday to Sunday nOd 8 from Monday to Friday nOd 9 from Monday to Saturday nOd 10 Saturday amp Sunday nOd 11 every day dOh Night time set point time band start hours dOm Night time set point time band start minutes dFh Night time set point time band end hours dFm Night time set point time band end minutes hours Example To program the night time set point nOd every day from 12 31 to 13 29 set NOd 11 days dOh 12 start hours dOm 31 start minutes dFh 13 end hours and dFm 29 end minutes During night time operation the set point is varied night time set point st 14 in direct mode night time set point st r4 in reverse mode Where featured the protective curtain also closes the cabinet A4 4 easy easy compact 030220791 rel 2 0 30 05 2007 Parameters for setting the AUX output activation time band AOd AUX output activation time band day setting AOd 0 no event set AOd 1 7 Monday to Sunday AOd 8 from Monday to Friday AOd 9 from Monday to Saturday AOd 10 Saturday amp Sunday AOd 11 every day AOh AUX output activation time band start hours
12. 0 O 0 O AO alarm and fan temperature differential 20 2 0 2 0 2 0 2 0 20 2 0 2 0 AL temperature alarm threshold deviation 20 0 250 20 0 20 0 22 0 15 0 18 0 20 0 AH _ high temperature alarm threshold deviation 20 0 25 0 20 0 20 0 22 0 25 0 20 0 25 0 Ad __ temperature alarm dela 60 70 60 60 20 40 30 25 A4 3rd input configuration 5 E 0 4 1 0 A7 _ digital input alarm delay i i a E 0 20 30 20 Ac set point dirty condenser alarm 55 0 50 0 70 0 550 55 0 55 0 55 0 55 0 AE __ dirty condenser alarm differential temperature 10 0 8 0 10 0 10 0 10 0 10 0 10 0 10 0 Acd dirty condenser alarm delay 60 40 200 60 60 60 60 60 FO enable evaporator fan control 1 0 1 0 Fl evaporator fan control set point g 5 5 0 50 5 0 5 0 F2 stop evaporator fan if compressor off 1 1 1 1 F3 evaporator fan status during defrost a 1 1 1 1 Fd post dripping time a 3 A 5 6 Table 5 e Key EZY normal temperature low temperature 1 no defrost defrost by hot gas 2 defrost by time automatic night time set point variation from digital input 3 heating output digital input alarm management 4 defrost with temp control defrost by temperature d0 4 d0 4 easy compact parameter sets EY Par Description S models normal temperature EY 1 EY 2 EY 3 EY 4 4 select probe displayed 1 1 1 1 5 select C F 0 0 0 0 rd control differential 3 0 3 0 5 0 2 0 rl minimum set point value 10 0 15 0 20 0 30 0 2 maximum set point value 15 0 20 0
13. 0 wae nOd nighttime band ON day C 0 11 days 0 XYL nOh night time band ON hours C 0 2 h O AS nOm_ night time band ON minutes C 0 59 min 0 X Y nFd night time band OFF day C 0 11 days 0 X Y C nFh_ _ night time band OFF hours C 0 23 h 0 ane nFm___ night time band OFF minutes E 0 59 min 0 ane N VI easy easy compact 030220791 rel 2 0 30 05 2007 CAREL Par Description Type Min Max UOM Def Parameter visible in models Aod AUX time band ON day E 0 11 days 0 ane Aoh _ AUX time band ON hours C 0 23 h 0 DAS Aom AUX time band ON minutes E 0 59 min 0 Ane Afd AUX time band OFF day E 0 11 days 0 AE AFH _ AUX time band OFF hours C 0 23 h 0 A E Afm AUX time band OFF minutes C 0 59 min 0 AS Table 5 c 5 7 Table of easy compact parameters Par Description Type Min Max UOM Def Parameter visible in models PS password F 0 99 22 S with 1 amp 2 probes M with 1 amp 2 onde 2 probe measurement stability E 1 15 4 S with 1 amp 2 probes M with 1 amp 2 onde 4 select probe displayed F 1 2 1 S with 2 probes M with 2 probes 5 select C F C 0 1 0 S with 1 amp 2 probes M with 1 amp 2 probes 6 disable decimal point G 0 1 0 S with 1 amp 2 probes M
14. AOm AUX output activation time band start minutes AFh AUX output activation time band end hours AFm AUX output activation time band end minutes Example To program the activation of the AUX output every day from 12 31 at 13 29 set AOd 11 days AOh 12 start hours AOm 31 start minutes AFh 13 end hours and AFm 29 end minutes A Important the activation the AUX output activation time band is linked to parameters H1 3 and A446 7 8 4 11 Rapid parameter set selection EZY The easy and easy compact controllers feature the EZY parameter on the compact models this is called EY which is used to quickly choose a list of parameters with corresponding values for the control of the refrigeration system By setting parameter EZY 1 2 3 4 one of the 4 lists made up of a maximum of 25 parameters for the lists see par 5 8 Table of EZY parameter sets page 27 The values in the chosen list overwrite the corresponding operating parameters O Note e to restore the selected rapid parameter set at any time turn the controller off and on again while holding SET The display shows CE to indicate that the selected rapid set EZY 1 2 3 4 has again overwritten the operating parameters thus restoring the original set of parameters e to restore all the parameters and return to the original default values factory settings turn the controller off and on again while holding DOWN and SET until the display shows
15. LED and the temperature will flash on the display for 10 minutes excluding the compressor LED and the fan will stop After 10 minutes if the door is still open the fan will resume normal operation and the display will show the dor signal alternating with the temperature value displayed Special cases e continuous cycle this is performed normally however the evaporator fan is stopped based on the times set for A7 e defrost this is performed normally and the activation of the fan is managed using parameter F3 evaporator fan status during defrost If F3 1 the digital input will only be able to signal the opening of the door without stopping the fan A4 8 Door switch with fans and compressor off contact open door open contact closed door closed See A4 7 with the addition of shutting down the compressor during the pre alarm A7 or d8 Enabling the digital input A4 8 has priority over the compressor protection parameters cO c1 C2 c3 A4 9 Direct reverse operating mode contact open direct operation contact closed reverse operatio Parameter A4 9 has priority over parameter r3 only r3 0 specifies the activation of the defrost control easy easy compact 030220791 rel 2 0 30 05 2007 r3 contact result O open Direct operation with defrost control closed Reverse operation 1 open Direct operation closed Reverse operation 2 open Direct operation closed Reverse operation
16. Power supply relay output connector Std CAREL NTC 10 KQ at 25 C Std CAREL PTC 985 O at 25 C screw terminals 5 mm pitch for cables with cross sect from 0 5 mm to 1 5 mm 12A max plug in terminals 5 08 mm pitch for screw blocks or with crimped contacts for cables with cross sect from 0 5 mm up to 2 5 mm 12A max Probe connector screw terminals 2 pin 5 mm pitch for models with 1 probe cable cross section from 0 5 mm to 1 5 mm 12A max 3 pin 3 81 mm pitch for models with 2 probes cable cross section from 0 08 mm to 1 5 mm 6A max plug in terminals for screw blocks or with crimped contact 2 pin 5 08 mm pitch for models with 1 probe cable cross section from 0 5 mm to 1 5 mm 12A max 3 pin 3 81 mm pitch for models with 2 probes cable cross section from 0 08 mm to 1 5 mm 8 A max Serial connector 1 connector for the network of supervisor connection or for the parameter programming key only on the models where featured Assembly using screws from the front or with rear brackets Display LED display 2 digits plus sign decimal point and compressor icon Keypad 3 membrane buttons immunity against voltage surges category 1 type of action and disconnection 1 C relay contacts no of relay automatic operating cycles EN60730 1 100 000 operations UL 30 000 operations 250 Vac software class and structure Class A
17. S r1 r2 QUE 4 M S with 1 amp 2 probes X Y C r1 minimum set point value C 50 r2 F 50 M S with 1 amp 2 probes X Y C r2 maximum set point value E r1 150 C F 90 M S with 1 amp 2 probes X Y r3 select direct reverse operation C 0 2 0 S with 1 amp 2 probes X Y r4 night time set point delta 50 50 C F 3 M S with 2 probes X Y rd control differential F 0 19 C F 2 S with 1 amp 2 probes X Y C co compressor and fan start delay on power up C 0 100 min 0 S with 1 amp 2 probes X Y C cl minimum time between consecutive compressor starts C 0 100 min 0 S with 1 amp 2 probes X Y C c2 minimum compressor off time C 0 100 min 0 S with 1 amp 2 probes X Y c3 minimum compressor on time C 0 100 min 0 S with 1 2 probes X Y c4 compressor on time with duty setting C 0 100 min 0 S with 1 amp 2 probes X Y cc continuous cycle duration E 0 15 h 4 S with 1 amp 2 probes X Y c6 temperature alarm bypass after continuous cycle C 0 15 h 2 S with 1 amp 2 probes X Y do type of defrost C 0 4 a 0 S with 1 amp 2 probes X Y C dl interval between defrosts F 0 199 h min see dC 8 S with 1 2 probes X Y dt end defrost temperature set point defrost temperature F 50 127 GPF 4 S with 2 probes X Y C threshold with temp control dP maximum defrost duration F 1 199 min s see dC 30 S with 1 amp 2 probes X Y
18. by digital input Represents the time which must elapse between when the controller is turned on and the start of the defrost The digital input can be used to start a defrost from external contact see parameter A4 3 d5 represents the delay between when the defrost is enabled or called and when it effectively starts The defrost from digital input can be exploited to perform defrosts in real time when is the RTC option is not fitted Simply connect a timer to the multifunction digital inout 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 CAREL internal clock it is suggested to set parameter dl 0 only manual defrosts from the keypad or multifunction contact or to set dl to a value which is greater than the maximum set interval A4 Meaning d5 3 istart defrost on closing delay between call and effective start Table 4 d d6 freeze control temperature display during defrost This function locks the display of the ambient temperature during the defrost cycle at the last value read before the current defrost d6 1 d6 0 display the message dF alternating with the temperature measured by the control probe d6 1 freeze the display on the last temperature measured before
19. control probe error occurs when the controller is in defrost mode the function is not stopped but rather is completed as required in addition the defrost can still be performed when called During the defrost the duty setting timer is not stopped but rather keeps counting the ON and OFF times Duty setting and continuous cycle If the continuous cycle is operating the controller instantly exits this status and activates duty setting also for safety reasons given that during the continuous cycle the low temperature alarm is disabled To re activate continuous cycle operation the ambient probe fault must be resolved If the probe error is no longer present the unit returns to normal operation The compressor again takes on the logic of the control respecting the times C1 C2 C3 4 5 Continuous cycle The continuous cycle is used to maintain refrigeration continuously active regardless of the temperature inside the unit The function is used to rapidly lower the product temperature even below the set point for example after filling the cabinets In this phase the temperature may fall below the set point by the value set for parameter AH To activate or deactivate the continuous cycle from the keypad press the UP DOWN buttons for more than 3 seconds the display will show cc and the icon will flash 2 flashes pause cc continuous cycle duration This represents the time in hours that the compressor operates continuou
20. defrost when closing MODEL M select probe displayed Input open probe 1 Input closed probe 2 4 Curtain switch or night time operation Input open normal set point Input closed night time set point r4 5 Remote ON OFF Input open OFF Input closed ON 6 Direct operation of AUX output when H1 3 Input open AUX de energised Input closed AUX energised 7 Door switch with evaporator fans off dor alarm instant A7 0 or delayed A7 gt 0 Operation of AUX output H1 3 Input open door open Input closed door closed 8 Door switch with evaporator fans and compressor off dor alarm instant A7 0 or delayed A7 gt 0 Operation of AUX output H1 3 Input open door open Input closed door closed 9 Direct reverse operating mode SE r3 0 input open direct defrost input closed reverse SEr3 1 2 input open direct input closed reverse 10 Probe for dirty condenser alarm 11 Product probe Tab 4 h easy easy compact 030220791 rel 2 0 30 05 2007 CAREL A4 0 multifunction input disabled The multifunction input is not activated and cannot be used as a digital or analogue input A4 1 external alarm contact open alarm detected contact closed normal operation When A4 1 easy can be connected to an external contact forimmediately signalling alarms The alarm signal can be delayed by setting parameter A7 The activation of the alarm brings ab
21. for the type of probe _ displayed values in C F and decimal point more a E O one mn P Tabl deactivates the defrost together with displays able 3 a l activates firmware deactivates version the continuous cycle easy compact Table 3 c Keypad functions for easy and easy compact M models models with keypad only but function normal operation start up ly O no ON OFF flash O my 1 compressor on off call ON CLO 2 digits two digits with sign and decimal point 99 to 99 See parameters 4 5 6 for the type of probe 3 displayed values in C F and decimal point The parameters that feature three A values can be set from the no pressing the button alone 1 more than 3 s switch ON OFF 2 1 s displays sets the set point pressed more than 3 s accesses the together parameter setting menu enter activate password 22 parameter reset mutes the audible alarm buzzer procedure 3 rapid selection of probe displayed for 1s displays firmware version 11 Table 3 d easy easy compact 030220791 rel 2 0 30 05 2007 3 3 Preliminary configurations Once the electrical connections have been completed simply power up the controller to make it operative CAREL then recommends to check that the display does not show any alarm signals see par 5 1 Table of alarms and signals on page 23 then set the time and date in the models fitted with RTC see par 4 10 Clock and time band parame
22. fuse must be installed in series with the primary 32 mAT for code TRA12VDE0O The transformer instrument connection must be as short as possible e if the power supply available is already low voltage but not 12 Vac a suitable adapting transformer must be used double insulation between the primary and secondary and definition for surge on the primary to the appropriate level 2000 V for applications in industrial environments The voltage supplied to these terminals see the wiring diagrams must correspond within the specified tolerances to the value shown on the instrument connection label The insulation of the instrument for versions with mains power supply 230 Vac and 115 Vac is reinforced The versions with 12 Vac Vdc power supply on the other hand do not feature such insulation easy wiring diagrams PJEZ S X NTC PTC PROBES 230Vac or oe 115 Vac or 12 Vac Vdc PJEZ C Y 230Vac or 115 Vac or 12 Vac Vdc PJEZ M gt SERIAL CONV m o r PROG amp Key 2 995 NTC PTC PROBES 230Vac or oo 115 Vac or 12 Vac Vdc ar Fig 2 d easy easy compact 030220791 rel 2 0 30 05 2007 10 CAREL easy compact wiring diagrams PJEZS 0 PJEZS 1 r PROG SERIAL KEY CONV lon PJEZS E NTC PROBES NTC PROBES N e PJEZM N 0 PJEZM N 1 ss o gt PROG SERIAL KEY CONV PJEZM N E NTC PROBES NTC PROBE
23. min s dC 30 S with 1 2 probes d4 defrost when switching the instrument on C 0 1 0 S with 1 2 probes d5 defrost delay on power up or when enabled by digital input C 0 199 min 0 S with 1 amp 2 probes d6 freeze control temperature display during defrost C 0 1 1 S with 1 amp 2 probes dd dripping time F 0 15 min 2 S with 1 2 probes d8 alarm bypass time after defrost F 0 15 h 1 S with 1 amp 2 probes d9 defrost priority over compressor protectors E 0 1 0 S with 1 amp 2 probes d defrost probe reading 2 F ACE S with 2 probes dC time base C 0 1 0 S with 1 amp 2 probes AO alarm and fan temperature differential E 20 20 C F 2 S with 1 amp 2 probes AL absolute relative temperature for low temperature alarm F 50 99 C F 0 S with 1 amp 2 probes AH absolute relative temperature for high temperature alarm F 50 99 C F 0 S with 1 amp 2 probes Ad temperature alarm delay C 0 199 min 0 S with 1 amp 2 probes A8 enable alarm Ed end defrost by timeout C 0 1 0 S with 2 probes HO serial address C 0 207 1 S with 1 amp 2 probes M with 1 amp 2 probes H1 AUX output configuration C 0 2 0 S with 1 amp 2 probes M with 1 amp 2 probes H2 enable keypad C 0 2 1 S with 1 2 probes M with 1 2 probes H5 ID code read only F 1 199 0 S with 1 amp 2 probes M with 1 8 2 probes EY rapid parameter set selection C 0 4 0 S wit
24. or powering down on power up if the temperature is still above the Ac the alarm will go off again AC AE 2 Key 1 condensing temperature 2 cht pre alarm display only automatic reset 3 CHt alarm and refrigeration OFF manual reset A4 11 Product probe 3rd input terminal 11 configured as product probe The input is used in analogue mode for probe 3 product Below is a summary table of the relation between parameter A4 and the actuators outputs alarm AUX FAN COMP A4 1 IA A4 6 Y A4 7 dor Y Y A4 8 dor Y Y Y Table 4 k easy easy compact 030220791 rel 2 0 30 05 2007 20 CAREL A7 digital input alarm delay Sets the delay in minutes for detecting the external alarm when A4 1 7 ors A8 enable alarm Ed end defrost by timeout The alarm Ed signals the end defrost due to the maximum defrost time dP being reached This can be disabled by setting A8 0 The signal Ed disappears when the next defrost is called Ac Dirty condenser alarm set point Sets the temperature set point above which the dirty condenser alarm CHt is signalled see parameter A4 10 AE Dirty condenser alarm differential temperature Sets the temperature value for determining the dirty condenser pre alarm cht interval see parameter A4 10 Acd dirty condenser alarm delay Sets the delay in minutes before activating the dirty
25. subsidiaries are warned of the possibility of such damage DISPOSAL The product is made up of metal parts and plastic parts In reference to European Union 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 disposed of separately 5 in the event of illegal disposal of electrical and electronic waste the penalties are specified by local waste disposal legislation easy easy compact 030220791 rel 2 0 30 05 2007 CAREL Content 1 INTRODUCTION 7 Aa A ee 7 EE LN IAAT N AAT III A 7 TSANG GIG PIG MODES een 8 A 8 E een 8 2 ASSEMBLY AND INSTALLATION 9 A AAA O RCM PO II elowta 9 2 2 HC CAL COMME CONS arameo daa 9 2 3 Wiring diagram for multiple units 10 3 USER INTERFACE AN
26. temperature alarm The probe has measured a temperature higher than the set point by a value that exceeds parameter AH e check parameters AH Ad and AO The alarm is automatically reset when the temperature returns within the set limits see parameter AH EE displayed during operation or on power up unit parameter reading error See Data errors EF displayed during operation or on power up operating parameter reading error See Data errors Ed flashing The last defrost ended after exceeding the maximum duration rather than when reaching the end defrost set point e check parameters dt dP and d4 e check the efficiency of the defrost The message disappears when the next defrost ends correctly dF flashing defrost running e this is not an alarm signal but rather a message that the instrument is running a defrost Only shown if d6 0 cht flashing dirty condenser pre alarm e check parameters A4 Ac AE and Acd easy easy compact 030220791 rel 2 0 30 05 2007 CHt flashing dirty condenser alarm e check parameters A4 Ac AE and Acd EtC flashing internal clock error 5 3 Data error In certain operating conditions the instrument may detect errors in the data saved These errors may compromise the correct operation of the instrument If the microprocessor detects a data saving error the display shows the message EE If the fault persists the controller needs to be replaced If on the other h
27. the 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 The freeze mode is also valid for the display of the second and third probe if enabled parameter 4 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 number of minutes the compressor and fan are off If dd 0 no dripping is set therefore at end defrost the compressor starts immediately Q a oo OFF C ON m OFF I dd I ip Fig 4 i Key 1 defrost 2 start compressor call 3 compressor d8 alarm bypass time after defrost Indicates the time the high temperature alarm is bypassed from the end of the defrost or from when the cold room door is opened ifthe digital input is connected to the door switch parameter A4 d9 defrost priority over compressor protectors Cancels the compressor protection times cO c1 c2 c3 at the start of the defrost The possible values are d9 0 protection times observed d9 1 protection times ignored the defrost has higher priority and the compressor times are not observed 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 R
28. 20 0 40 0 r3 select direct reverse operation 1 0 2 0 cl minimum time between consecutive compressor starts 3 3 O 6 EZ minimum compressor off time 2 4 0 4 do type of defrost 2 2 0 4 dl interval between defrosts 6 10 6 12 dt end defrost temperature set point 5 0 5 0 5 0 5 0 dP maximum defrost duration 40 40 40 40 d6 freeze control temperature display during defrost 1 1 1 1 dC time base 0 0 0 0 AQ alarm and fan temperature differential 2 0 2 0 20 20 AL absolute temperature or deviation for low temperature alarm 20 0 25 0 20 0 20 0 AH absolute temperature or deviation for high temperature alarm 20 0 25 0 20 0 20 0 Ad temperature alarm delay 60 70 60 60 Table 5 f Key EY _ normal temperature 1 no defrost 2 defrost by time 3 heating output 4 defrost with temp control d0 4 27 easy easy compact 030220791 rel 2 0 30 05 2007 5 9 Troubleshooting The following table shows a number of anomalous situations that may occur on the various models The most frequent causes and corresponding checks are described problem cause CAREL checks the compressor does not start signalled by the compressor LED flashing compressor delay setdefrost post dripping in progress parameters c0 c1 and c2 and dd the temperature is over the set limits but there is no alarm message and the buzzer if fitted does not sound alarm delay set parameters Ad c6 d8 alarm IA is signalled multifunction
29. 3 hot gas 4 heater with temperature control Table 4 c A Important on the easy and easy compact models and the easy models without defrost relay defrost can only be performed by stopping the compressor In these cases the defrost may be managed by time recommended d0 2 or temperature if the defrost probe is present recommended d0 0 How to start the defrost e from the keypad pressing the DOWN button for 3 s manual defrost e by digital input in the models where fitted setting parameter A4 3 e from the supervisor e setting the time bands if RTC available enabled e atthe end of the interval between two defrosts parameter dl gt 0 e when switching the instrument on parameter d4 1 A Important the easy compact models not having the RTC nor the digital input cannot be set with defrost time bands and cannot be connected to an external contact for defrost management easy easy compact 030220791 rel 2 0 30 05 2007 The defrost may be called but not activated in the following cases e continuous cycle e dripping dd gt 0 post dripping Fd gt 0 e compressor protectors e off status e disabling from digital input A4 2 e setting the time delay d5 gt 0 for the defrost function when the instrument is switched on d4 1 e direct control mode only without defrost r3 1 or reverse r3 2 in this case the defrost is not called e defrost by temperature d0 0 1 4 and
30. CF Use this procedure with extreme care as it may compromise the fundamental control settings e EZY 0 brings no change e on the thermometer models PJEZM the EZY parameter EY for the easy compact models is not featured 4 12 Other settings The operation of the device is completed by a series of additional functions such as the assignment of a supervisor serial network address the configuration of the AUX relay the enabling of the keypad and the buzzer HO serial address Assigns the instrument an identification address for connecting to a supervisory or telemaintenance system def HO 1 H1 AUX output configuration Establishes the operating logic of the auxiliary relay in particular defines whether it is used as an alarm output or as an auxiliary output linked to the digital input Hi 0 no function associated with the output H1 1 alarm output norm energised relay de energised with alarm H1 2 alarm output norm de energised relay energised with alarm H1 3 AUX output linked to Dig in A4 6 7 8 Dig in OPEN AUX de energised Dig in CLOSED AUX energised AUX LED on display easy easy compact 030220791 rel 2 0 30 05 2007 22 CAREL Note e in mode H1 1 2 the alarms that act on the AUX output are LO HI EO AY CHT e mode H1 1 is useful for signalling an alarm when a power failure occurs H2 enable keypad Used to prevent the set point and the other operatin
31. D START UP 11 SADE o E E arent 11 SS AM NA II AA A ET 11 3 5 Preliminary COMM SURA IDAS variaron 12 3 4 Functions available from the Keypad sssccssssccsssssssssssssesscsccssssssssseseeeseesen 12 4 FUNCTIONS AND PARAMETERS 13 4 1 Temperature probe Settings nn 13 4 2 Temperature display cccssssscsssussescsnccenssoscenassaseserssasensshandasassescocensnnsdansdacedsset 13 4 3 Temperature COntrOl sassiseasissnsnnsesrszescapsssorenpinseesesonssonesnnsnseaissseennssasudusagiasetanpin 13 14 DI N een 14 45 COMAS AS nenne 14 4 6 COMPRESSON D1 CLEC arar 15 DE DINO nenne 15 4 8 Alarm parameters cnc 17 4 9 Evaporator fan management parameters nn 20 4 10 Clock and time band Parametels sssssssssssscccsssssssssssssssssesssssssssssssssssseeesen 21 4 11 Rapid parameter set selection EZY csecsssssccsssssssssssssssccsssssssssssseesseseesen 22 AND Oer SEINES amaron 22 5 TABLES OF ALARMS AND PARAMETERS 23 5 1 Table of alarms and Sigmals sccscssssccsssssssssssssssssccsssssssssssssssccscessssssssssseeeee 23 5 2 Description of the main signals and alarIsS uuunnnm romo 25 IS LIED een ee ee 24 5 4 Modifying the PAraMe ters concisa isis 24 5 5 Setting the default parameter 24 5 6 Table of easy parameters sis 25 5 7 Table of easy compact parameters u csssssssssssssccccssssssssssseseesceesssssssseeeeeeee 26 59 Toubes 110 A dz E EE Roi 28 6 TECHNICAL SPECIFICATIONS 29 6 1 easy technical Specifications sssssicsccssccc
32. DOWN for more than 3 s activated only if the temperature conditions are right Continuous cycle Not available on the easy and easy compact thermometer models M Press UP DOWN for more than 3 s activated only if the temperature conditions are right The continuous cycle is used to maintain refrigeration active in the cabinet or cold room regardless of the temperature inside the unit This may be useful for rapidly bringing the temperature below the set point value Rapid display of the temperature read by the other probes only available for easy and easy compact thermometer models M Press the DOWN button to scroll the temperatures read by the probes Each time the DOWN button is pressed the display will show the name of the probe Pr1 Pr2 or Pr3 only on the models with 3 inputs and with multifunction input configured as a probe and after 1 s the temperature measured by the selected probe will be displayed To display the other probes press DOWN again To return to the normal display wait 3 s without pressing any buttons exit by timeout CAREL 4 FUNCTIONS AND PARAMETERS This chapter describes all the functions of the easy and easy compact See Table 1 c for the compatibility of the functions with the model used A Important the easy compact models only display two digits In the range below 99 and above 99 the terminal will display The parameter codes with 3 digits are converted as
33. M S with 2 probes X Y Acd dirty condenser alarm delay C 0 250 Imin 0 M S with 2 probes X Y C FO enable evaporator fan control E 0 1 0 E Fl evaporator fan control set point F 50 127 oer 5 C F2 stop evaporator fan if compressor off C 0 1 1 C F3 evaporator fan status during defrost C 0 1 1 C Fd post dripping time F 0 15 min 1 E HO serial address C 0 207 1 M S with 1 amp 2 probes X Y H1 AUX output configuration C 0 3 0 M S with 1 amp 2 probes X Y C H2 enable keypad C 0 1 1 M S with 1 amp 2 probes X Y C H4 disable buzzer C 0 1 0 M S with 1 amp 2 probes X Y H5 ID code read only F 0 199 M S with 1 amp 2 probes X Y EZY rapid parameter set selection C 0 4 5 0 S with 1 amp 2 probes X Y C tEn enable RTC E 0 1 0 ATE dAY RTC day of the week C 1 1 days 0 A E hr RTC hours C 0 23 h 0 ARE Min RTC minutes C 0 59 min 0 AO did defrosttime band Ist day C 0 11 days 0 X Y dlh time band 1st hour E 0 23 h 0 ae dim__ time band 1st minute C 0 59 min 0 XYL d2d__ defrost time band 2nd day C 0 11 days 0 EC d2h time band 2nd hour C 0 23 h 0 AE d2m time band 2nd minute C 0 59 min 0 X Y d3d__ defrost time band 3rd day C 0 11 days 0 ae d3h___ time band 3rd hour C 0 23 h 0 YE d3m time band 3rd minute C 0 59 min 0 AS d4d__ defrost time band 4th day C 0 11 days 0 AE d4h time band 4th hour C 0 23 h 0 X Y d4m time band 4th minute C 0 59 min
34. S N PJEZM P 0 PJEZM P 1 22 0 PROG SERIAL KEY CONV PJEZM P E NTC PROBES NTC PROBES E Fig 2 e 2 3 Wiring diagram for multiple units Warnings e the RS485 converter IROPZ48550 is sensitive to electrostatic discharges and therefore must be handled with extreme care e check the technical documents on the CAREL IROPZ48550 option for the description of the connection methods so as to avoid damaging the instrument e suitably fasten the converter so as to avoid disconnections e perform the wiring with the power supply disconnected e keep the IROPZ485S0 serial option cables separate from the original wires relay outputs and power supply The RS485 converter IROPZ485S0 is used to connect the easy and easy compact instruments to the supervisor network allowing complete control and monitoring of the easy units connected The system allows up to 207 units to be connected together with a maximum length of 1000 m For the connection the standard accessories are required RS485 USB converter CAREL code CVSTDUMORO and two 120 O terminal resistors to be fitted on the terminal block on the first and last instrument connected Connect the RS485 converter to the easy or easy compact unit using a 4 wire cable and make the connections as shown in the figure The line should be started and ended with a 120 1 4 W resistor For the allocation of the serial address see parameter HO The recommended c
35. X RTC parameters O Table 5 b 5 5 Setting the default parameters Warnings running this procedure overwrites any custom parameter settings To reset the default parameters e disconnect power from the instrument e reconnect power while holding the SET and DOWN buttons e the display will show the message CF e after a few seconds the instrument starts operating with the default configuration Any different parameter settings will need to be updated CAREL 5 6 Table of easy parameters Par Description Type Min Max UOM Def Parameter visible in models PS password F 0 200 22 M S with 1 amp 2 probes X Y 2 probe measurement stability C 1 15 A M S with 1 amp 2 probes X Y 4 select probe displayed F 1 3 1 M S with 2 probes X Y C 5 select C F E OCC GER 0 M S with 1 2 probes X Y 6 disable decimal point C 0 1 0 M S with 1 amp 2 probes X Y 7 enable probe 2 alarm model M only C 0 1 0 0 M Cl probe 1 offset F 12 7 12 7 CC F 0 M S with 1 2 probes X Y C C2 probe 2 offset F ALA 1 127 EA 0 M S with 2 probes X Y C ES probe 3 offset F 12 7 12 7 CC F 0 M S with 2 probes X Y C St set point
36. and the message disappears it can continue to be used When EE error occurs frequently and or remains for some time the controller should be checked as the original precision may not be guaranteed 5 4 Modifying the parameters Parameter navigation The operating parameters modifiable using the keypad are divided into two types frequent type F and configuration type C Access to the latter is protected by password default 22 to prevent accidental or unauthorised modifications Accessing the type F parameters e press the SET button for more than 3 s if there are active alarms mute the buzzer the display shows the parameter code PS password e use the UP and DOWN buttons to scroll the parameters The LED corresponding to the category of parameters will be on see Table gt D e press SET to display the value associated with the parameter e increase or decrease the value using the UP or DOWN button respectively e press SET to temporarily save the new value and display the parameter again e repeat the procedure for any other parameters that need to be modified e press the SET button for more than 3 s to permanently save the parameters and exit the parameter setting procedure Accessing the type C parameters e press the SET button for more than 3 s if there are active alarms mute the buzzer the display shows the parameter code PS password e press the SET button to access the password setting
37. asednncconnnacasasaccesssnetoasaasisareessesennnndsserssas 29 6 2 easy compact technical specifications ceccsccssssssessscccsssssseesssecenssseessseeen 29 6 5 Electromagnetic compatibility asscccscccesssoccsssnssesesacesonssssnssaasasacernseerennesssassses 29 5 easy easy compact 030220791 rel 2 0 30 05 2007 CAREL 1 INTRODUCTION easy and easy compact are electronic microprocessor controllers with LED display developed for the management of refrigerating units display cabinets and showcases They exploit the experience and the success of the previous PJ32 range with the objective of offering a product that is simpler and more economical The structure of the parameters has 1 1 Main characteristics The following table lists the main features of the easy and easy compact controllers been enhanced with new functions for more dynamic and effective management of the temperature control and defrost easy compact the smallest most economical easy model with one relay only and a simplified display Features Models easy easy compact Ergonomic polycarbonate keypad with three buttons Y a Keypad protection to prevent tampering Y Y Access to the configuration parameters by password Y Y Digit display 199 to 999 99 to 99 Decimal point Y Y Display in C or F Y Y LED display OR tax ko Defrost by stopping the compressor Y Y heater Y hot gas Y
38. condenser alarm CHt see parameter A4 10 4 9 Evaporator fan management parameters The fan is activated based on the parameter settings and the status of the controller The evaporator fan control temperature is measured by probe 2 connector 10 To know which output is associated with the fan see the wiring diagram for the easy model used see par 2 2 Electrical connections page 9 A Important these parameters are not available in the compact models In normal operation the evaporator fan can be managed as follows always on FO 0 e on according to the evaporator temperature FO 1 F1 off when the compressor is off F2 1 During defrost the status of the evaporator fan is determined by parameter F3 e controlled according to FO F3 0 off F3 1 The fan remains off e during the dripping period if parameter dd 0 e during the post dripping period if parameter Fd 0 e fora time equal to cO after instrument power on if parameter cOx0 FO enable evaporator fan control FO 0 the fan is on FO 1 the fan is controlled based on a set point see parameter F1 If the evaporator probe is faulty the fan operates F1 evaporator fan control set point The controller starts the fans only when the temperature of the evaporator is below the value F1 AO F1 is the real temperature value and not the deviation from the set point Once off the fans start again when the difference between th
39. ct 030220791 rel 2 0 30 05 2007 8 CAREL 2 ASSEMBLY AND INSTALLATION 2 1 Assembly Warnings Avoid installing the boards in environments with the following characteristics e relative humidity greater than 90 or where there is condensation e strong vibrations or knocks e exposure to continuous water sprays e exposure to aggressive and polluting atmospheres e g sulphur and ammonia fumes saline mist smoke so as to avoid corrosion and or oxidation e strong magnetic and or radio frequency interference there avoid installing the units near transmitting antennae e near transmitting antennae and to the elements in general e large and rapid fluctuations in the ambient temperature e environments where explosives or mixes of flammable gases are present e exposure to dust formation of corrosive patina with possible oxidation and reduction of insulation To install easy and easy compact make an opening in the panel based on the drilling template 71x29 mm Panel installation using 2 rear brackets Figs 2 a and 2 b e insert the instrument in the opening phase 1 e secure the instrument by sliding the brackets in the guides on the instrument until compressing them against the panel phase 2 easy Fig 2 b Removing from the panel with brackets e release the instrument by pressing both brackets where marked push and sliding it back on the guides Panel installation from t
40. d when restarting e auxiliary relay management only in the following configurations H1 1 2 EO alarm only e H1 3 A4 6 Note when exiting OFF status the following settings are set to zero that is are not saved prior to OFF evaporator fan alarm hysteresis and management A0 temperature control hysteresis rd cht pre alarm hysteresis AE In addition the delays are set to zero for the display of the temperature alarms Ad d8 c6 dripping dd and post dripping Fd Warnings when first connected easy is already on and ready to be used e the instrument can be switched on from a supervisor PC and via an external contact setting A4 5 The latter has priority over the other modes easy easy compact 030220791 rel 2 0 30 05 2007 CAREL Set point setting desired temperature value The easy and easy compact devices control the desired temperature set point inside the cabinet or cold room directly and dynamically To view and modify the set point e press SET for 1 s the set value will start flashing e increase or decrease the value using UP or DOWN e press SET to confirm the new value A Important the PJEZM models fitted with keypad simply monitor the deviation from the set point and where necessary signal an alarm On these models the set point can only be modified using parameter St Manual defrost Not available on the easy and easy compact thermometer models M Press
41. dically at a frequency of every dl in hours or minutes see parameter dC The interval starts counting from the previous end defrost If the time is equal to 0 dl 0 the defrost is not performed except when activated from the keypad by digital input from the supervisor or by time band During defrosts the temperature alarms are inhibited dt end defrost temperature set point defrost temperature threshold with temp control For the models fitted with end defrost probe this parameter allows an evaporator temperature to be set at which the defrost is stopped the evaporator temperature is measured by the defrost probe The end defrost temperature differential is fixed at 1 C defrost thermostat d0 4 If at the start of a defrost cycle the temperature measured by the defrost probe is greater than dt the cycle is not performed easy easy compact 030220791 rel 2 0 30 05 2007 CAREL In the event of defrost probe failure the controller 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 of dP and the error Ed is displayed if enabled by A8 and stays on until a correct defrost cycle is performed dP maximum defrost duration Determines the maximum duration of the defrost in minutes or seconds see parameter dC When defrost by time is set d0 2 3 4 dP repre
42. e probe reading and the set point is equal to A0 where AO is the fan controller differential CAREL When FO 1 e evaporator temperature lt F1 AO the fan is ON e evaporator temperature gt F1 the fan is off evap temp Fig 4 m F2 stop evaporator fans if compressor stops F2 0 the fan operates according to FO even when the compressor is off El 1 the fan is off when the compressor is off F3 evaporator fan status during defrost F3 0 the fan operates according to FO during the defrost p the fan is off during the defrost Fd post dripping time The fans after the defrost can stay off for a further period in minutes beyond dd defined by the value of Fd This is useful to allow the evaporator to return to operating temperature after defrost thus avoiding blowing warm air into the refrigerated environment If management by fan controller is selected no time needs to be set for Fd as the controller starts the fans again when the evaporator has reached the correct temperature If the fan controller is active FO 1 setting a value for Fd other than 0 the fans remain off for a time equal to the value of Fd regardless of the evaporator temperature 4 10 Clock and time band parameters The RTC Real Time Clock not available on the easy compact models is used to manage the defrost function curtain switch night time operation and AUX output in real time The user can enable disable the clock and s
43. e value of AO determines the actual activation of the temperature alarms The value of AO negative or positive defines the nature of alarms AL and AH absolute or relative respectively in detail AO lt 0 AL and AH expressed as absolutes AO gt 0 AL and AH expressed relative to the set point St or St r4 in night time operation O gt gt I Ex O set point Fig 4 Key 1 low temperature alarm 2 high temperature alarm AL absolute or relative temperature for low temperature alarm Determines the activation threshold of the low temperature alarm AL Low temperature Low temperature Alarm disabled alarm normal if alarm night time if if absolute temp probe1 lt AL temp probe1 lt AL AL 50 temp probe 1 lt St AL temp probe 1 lt St AL 0 r4 AL relative Table 4 f easy easy compact 030220791 rel 2 0 30 05 2007 AH absolute or relative temperature for high temperature alarm Determines the activation threshold of the high temperature alarm High temperature Alarm disabled alarm night time if if AH High temperature alarm normal if absolute temp probe 1 gt AH I temp probe 1 gt 2AH AH 150 relative Temp probe1 gt St temp probe 1 gt St AH 0 AH r4 AH Table 4 g Note the low and high temperature alarms are automatically reset this means that if the temperature returns withi
44. emember however that in this case the maximum number of activations per hour of the compressor may not be respected d defrost probe reading Used to display the value measured by the defrost probe on the instruments where this is fitted 17 dC time base Used to modify the unit of measure used to count the times for parameters al defrost interval and dP defrost duration The following values are available dC dl dP 0 hours minutes 1 minutes seconds Table 4 e The parameter dC 1 can be useful to e test the operation of the defrost function with reduced times e manage air driers The defrost cycle thus becomes the condensate drain cycle which must occur at close intervals minutes and for very brief durations seconds ir Important this parameter should be used dC 1 if the defrost requires the activation of the compressor hot gas and when d9 1 as otherwise the compressor may be damaged due to a number high of consecutive starts 4 8 Alarm parameters The alarms can be set as regards the threshold type and activation delays When an alarm occurs the unit may stop normal operation and warn that the alarm situation has occurred based on the type of alarm AO alarm and fan temperature differential This represents the differential used to activate the high and low temperature alarms AH AL and for the management of the fan In the event of an alarm as seen in the figure th
45. er and without compromising the performance or the reliability of the product M models PJEZM Solution for simply measuring the temperature easy easy compact 030220791 rel 2 0 30 05 2007 CAREL Summary table of the functions associated with the models function see par easy easy compact mod mod mod mod S mod M mod S mod M C X Y 2 probes 1 2 probes 1 2 1 2 1 multifunction probe multifunction probe prbs probe prbs probe input input temperature display 42 Y Y Y Y Y Y Y Y Y v Y temperature measurement in C F 4 2 Y Y Y Y Y Y Y Y Y gt parameter access using password 54 Y Y Y Y Y Y ij Y vV Y id set point modification 34 Y Y Y Y Y Y Y v Y night time set point management 43 Y Y Y Y Y 2 enable disable direct probe 2 alarm 42 Y z Y 2 temperature probe calibration 4 1 Y Y Y Y Y Y i Y Y Y temperature control in DIRECT mode 43 Y v Y Y Y a Y Y r temperature control in REVERSE mode 4 3 Y Y Y Y Y Y Y z compressor protectors 4 6 Y Y v Y v E E Y Y 7 duty setting 44 Y Y Y Y Y a a Y Y continuous cycle 45 Y Y Y Y Y a Y Y z defrost 47 Y Y v Y Y E A Y Y E high low temperature alarm 4 8 Y Y Y Y Y Y Y Y Y dirty condenser alarm 48 Y Y Y Y Y Y E Y a evaporator fan management 49 Y E i E _ ON OFF 3 4 Y Y Y Y Y Y x Y Y Y x AUX output config
46. es the right to modify the features of its products without prior notice easy easy compact 030220791 rel 2 0 30 05 2007
47. et the current time using dedicated parameters In particular up to 4 time bands can be set for managing the defrosts one band for managing night time operation and one for activating the AUX output The clock alarm fault EtC is activated only if the clock is effectively used that is has been enabled the time has been set and there is at least one valid time band Setting the clock 1 press the SET button for more than 3 s if there are active alarms first mute the buzzer the display shows the parameter code PS password 2 press the SET button to access the password setting and use the UP and DOWN buttons to scroll the numbers until displaying 22 password to access the configuration parameters 3 press the SET button to confirm the password 4 use the UP and DOWN buttons to scroll the names of the parameters until reaching the parameter tEn 5 press SET to display the value associated with the parameter 6 use the UP and DOWN buttons until reaching the value 1 for enabling the clock 7 press SET to temporarily save the new value and display the parameter again 8 repeat the operation to set the values of the parameters dAY day of the week hr hours Min minutes 9 at the end of the operations press the SET button for more than 3 seconds to permanently save the selected values and exit 21 Setting the time bands Perform the operations from point 1 to point 7 above then select the pa
48. ff switching frequency in the event of minimum temperature deviations ip Important the compressor can also be safeguarded using the parameters that limit the number of activations hour and the minimum off time see par 4 6 Compressor protection page 15 4 4 Duty Setting Safety function that ensures the operation of the compressor even in the event of a control probe fault If alarm EO occurs duty setting ensures the operation of the compressor until the fault is resolved The compressor not being able to be activated according to temperature works cyclically with an ON time equal to the value assigned to parameter c4 in minutes and a fixed OFF time of 15 minutes see Fig 4 b easy easy compact 030220791 rel 2 0 30 05 2007 14 CAREL C4 C4 lt gt gt ON compressor OFF OFF 15 min Fig 4 b c4 compressor on time with duty setting c4 0 in the event of an ambient probe fault the compressor will be always off c4 100 the compressor will remain always on and the c4 99 15 minute off time is not considered for easy compact 0 lt c4 lt 100 at the moment a probe error E0 is detected the 0 lt c4 lt 99 duty setting cycle starts from the current status of the compressor that is the status of the compressor is maintained and the time already elapsed is ignored The compressor times set by parameters C1 C2 C3 are always observed for easy compact Duty setting and defrost If the
49. follows easy easy compact C1 C1 C2 C2 EZY EY Table 4 a While the messages become easy easy compact OFF OF all ar Pr P1 Pr2 P2 SEt St Table 4 b 4 1 Temperature probe settings Depending on the models the easy and easy compact controllers feature one or two analogue inputs The easy controllers in addition also feature a multifunction input analogue or digital After installation the values measured by the temperature probes can be corrected and stabilised using the following parameters 2 probe measurement stability Coefficient used to stabilise the temperature measured by the probes 2 acts as a filter on the minimum variations in the temperature measurement and at the same time calculates the average of the readings e low values assigned to 2 allow a prompt response of the sensor to temperature variations the reading becomes more sensitive to disturbance e high values slow down the response but guarantee greater immunity to disturbance more stable and more precise reading C1 C2 C3 probe 1 2 3 offset These parameters are used to correct the temperature measured by the probes C1 probe 1 C2 probe 2 and C3 probe 3 with an offset in tenths of a degree The value assigned to this parameter is in fact added to C1 C2 C2 gt 0 or subtracted from C1 C2 C3 lt 0 the temperature measured by the related probe A Important parameter C3 is not available on the easy c
50. for starting the defrost when the contact closes Setting dl 0 no interval between two defrosts and without any time bands enabled closing the external contact will immediately start the defrost This function is useful for running timed defrosts without the RTC on board used to set the defrost time bands To do this simply connect a mechanical or electronic timer to the digital input and set A4 3 to guarantee the defrost cycles A series of units can be connected to the same timer In this case to prevent all the defrosts from starting at the same time set parameter d5 to different times for each unit connected see Fig 4 k In models PJEZM this is used to select the probe whose value is displayed by the instrument contact open probe 1 contact closed probe 2 Key 1 defrost call 2 open 3 closed A4 4 Curtain switch and night time operation contact open curtain raised normal operation contact closed curtain lowered and night time operation When A4 3 easy can be connected to an external contact for managing the opening and the closing of the curtain on the refrigerated cabinet and activating night time operation A Important 1 when the contact is closed the temperature set point becomes the night time setting and consequently the value of st is increased direct mode or decreased reverse mode by the value of r4 2 night time operation does not necessarily mean at night but rathe
51. g parameters from being changed when the instrument is located in a place that is accessible to the public H2 0 keypad disabled F parameters read only C parameters modifiable with password no set point modification no manual defrost no continuous cycle no ON OFF keypad enabled keypad enabled except for ON OFF H4 disable buzzer Setting H4 1 disables the operation of the audible buzzer H5 ID code Display only value this can only be modified via serial connection key or supervisor When set to a positive value values from 0 to 31 are used by CAREL for the basic models if a parameter including the set point is modified from the keypad the value becomes negative This allows any modifications made the parameters compared to the initial settings to be monitored PS password Protection code for modifying the configuration parameters default 22 The value of the password can be customised from the supervisor CAREL 5 TABLES OF ALARMS AND PARAMETERS instrument on off using the UP button or by disconnecting the power 5 1 Table of alarms and signals When an alarm is activated the display shows the corresponding message that flashes alternating with the temperature if fitted and enabled the buzzer and the alarm relay are also activated All the alarms have automatic reset that is they stop when the causes are no longer present except for alarm CHt which has manual reset supply
52. h 1 amp 2 probes Table 5 d Warning the easy compact models only display two digits If the range is below 99 and above 99 the terminal will display easy easy compact 030220791 rel 2 0 30 05 2007 26 CAREL 5 8 Table of EZY parameter sets easy parameter sets EZY Par Description models S X normal temperature models Y C low temperature EZY 1 EZY 2 EZY 3 EZY 4 EZY 1 EZY 2 EZY 3 EZY 4 4 select probe displayed 1 1 1 1 z a 5 select C F 0 0 0 0 rd control differential 3 0 3 0 5 0 2 0 3 0 4 0 30 20 rl minimum set point value 10 0 15 0 20 0 30 0 30 0 30 0 30 0 30 0 r2 maximum set point value 15 0 20 0 20 0 40 0 20 0 20 0 30 0 40 0 r3 select direct reverse operation 1 0 2 0 4 night time set point delta 5 0 5 0 2 0 4 0 cl minimum time between consecutive compressor 2 5 0 6 4 5 3 6 starts El minimum compressor off time 2 4 0 4 2 3 0 5 dO type of defrost 2 2 0 4 1 2 3 4 dl interval between defrosts 6 10 6 12 5 7 10 12 dt end defrost temperature set point defrost temperature 5 0 5 0 3 0 5 0 5 0 5 0 5 0 4 0 threshold with temp control dP maximum defrost duration 40 40 40 40 20 40 10 50 d6 freeze control temperature display during defrost 1 1 1 1 dC time base 0 0 0 0
53. he front using screws Fig 2 c e the thickness of the fastening panel must not exceed 3 mm e remove the front frame and make sure that the two catches are in place these must not protrude from the outline of the drilling template If necessary unscrew the two screws Do not unscrew excessively the screws must not be detached from the front panel phase 1 e insert the instrument in the opening in the panel and hold it in position by the centre of the front panel phase 1 e using the screwdriver tighten the bottom screw 90 the catch must come out of its slot and click onto the panel then tighten until the front panel is secure Do not over tighten when the front panel is secured blocks simply make another turn to compress the gasket If the catch does not click onto the panel unscrew the screw applying pressure at the same time with the screwdriver so that the catch moves back Do not unscrew too much the head of the screw must not be raised from the surface of the front panel phase 2 repeat the same operation for the top screw phase 2 apply the front frame phase 3 Fig 2 c do not over tighten the screws Dismantling using the screws from the front e unclip the front frame e unscrew the bottom screw at the moment the front panel detaches from the panel keep pressure on the screw and unscrew a further 90 to make the catch go back into its slot e repeat for the top screw e remove the
54. he website www carel com Each CAREL product in relation to its advanced level of technology requires setup configuration programming commissioning to be able to operate in the best possible way for the specific application The failure to complete such operations which are required indicated in the user manual may cause the final product to malfunction CAREL accepts no liability in such cases Only qualified personnel may install or carry out technical service on the product The customer must only use the product in the manner described in the documentation relating to the product In addition to observing any further warnings described in this manual the following warnings must be heeded for all CAREL products e prevent the electronic circuits from getting wet Rain humidity and all types of liquids or condensate contain corrosive minerals that may damage the electronic circuits In any case the product should be used or stored in environments that comply with the temperature and humidity limits specified in the manual e do not install the device in particularly hot environments Too high temperatures may reduce the life of electronic devices damage them and deform or melt the plastic parts In any case the product should be used or stored in environments that comply with the temperature and humidity limits specified in the manual do not attempt to open the device in any way other than described in the manual e do not dr
55. her procedure that is already in progress e g if is a continuous cycle in progress and a defrost is Called the latter will remain pending until the end of the continuous cycle and the corresponding LED defrost will flash EO steady 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 is steady if it is the only active alarm the temperature value is not displayed while it flashes if other alarms are active or the second probe is displayed E1 flashing evaporator probe or food conservation probe error e probe not working the probe signal is interrupted or short circuited e probe not compatible with the instrument E2 flashing condenser probe or food conservation probe error e probe not working the probe signal is interrupted or short circuited e probe not compatible with the instrument IA flashing immediate or delayed alarm from multifunction digital input e check the multifunction input and parameters A4 and A7 dOr flashing open door alarm e check the multifunction input and parameters A4 and A7 23 LO flashing low temperature alarm The probe has measured a temperature lower than the set point by a value that exceeds parameter AL e check parameters AL Ad and AO The alarm is automatically reset when the temperature returns within the set limits see parameter AL HI flashing high
56. input without actually being active the multifunction input generates an alarm when the contact opens connection of the inout and whether this is closed in normal operation the alarm connected to the multifunction input is not detected alarm delay set or parameter programming error 1 if A4 1 2 the status of digital input A7 the defrost is not activated defrost duration too short dP interval between defrosts dl 0 in this case the defrost is not activated parameters dP and dl and H1 for S models the end defrost temperature is too low or the evaporator temperature is too high parameters dt and d defrost probe the manual defrost is not activated and the defrost LED flashes compressor protection times set parameter d9 select d9 1 the high temperature alarm is shown after a defrost the alarm delay after defrost is too short or the alarm threshold is too low parameters d8 and AH the display remains frozen even after the defrost the ambient temperature has not yet reached the set point or alternatively the time d8 has not elapsed wait or reduce d8 after modifying a parameter the controller continues working with the old values the instrument has not updated the old value or alternatively the parameter setting procedure has not been ended correctly by pressing the SET button for 3s turn the instrument off and on again or alternatively reprogram the parameters correctly
57. instrument from panel keeping it horizontal 2 2 Electrical connections A Warnings e the electrical connections must only be completed by a qualified electrician e a power supply other than the type specified may seriously damage the system e separate as much as possible the probes and digital input signal cables from the cables carrying inductive loads and power cables to avoid possible electromagnetic disturbance Never lay power cables including the electrical cables and probe signal cables in the same conduits Do not install the probe cables in the immediate vicinity of power devices contactors circuit breakers or similar e reduce the path of the probe and sensor cables as much as possible and avoid spiral paths that enclose power devices The probes must be connected using shielded cables minimum cross section of each wire 0 5 mm e avoid direct contact with internal electronic components e connection errors and connections other than those indicated in this manual may involve danger to the safety ofthe users and cause faults on the instruments and the components connected e fit the unit with all the electromechanical safety devices required to guarantee correct operation and the complete safety of the user O Information e the probes can be installed up to a maximum distance of 30 m from the controller To extend the distance of the probes use cables with a minimum cross section of 1 mm shielded where pos
58. intain the required temperature Furthermore it handles automatic defrost by the forced shutdown of the compressor and safety functions through the management of the time settings X and Y models PJEZX PJEZY These are designed for the management of static units operating at low temperature that is below 0 C which require active defrost using electric heaters or the injection of hot gas The PJEZ Y X in fact as well as working as a thermometer and a thermostat like the PJEZS 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 In addition these models feature two probe inputs for the control probe room the defrost probe and a digital input this can also be configured as a probe There are two relay outputs for controlling the actuators compressor and for managing defrost 3 Models PJEZY and PJEZX differ in that e PJEZY has relays that are electrically connected together e PJEZX has independent relays C models PJEZC The most complete solution for ventilated units operating at low temperature These models have three relays providing complete control of the compressor fan and defrost management functions The three 16 A 2H 8 A and 8 A resistive relays have been built into a very compact case in the versions which also feature the 230 V or 115 V power transform
59. n the allowed range the alarm signal is automatically cancelled During a high or low temperature alarm the message Hl or LO respectively flashes on the display alternating with the temperature if fitted the buzzer is activated 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 A4 3rd input configuration multifunction The multifunction input is only available on the easy models with three inputs is not available on the easy compact models This parameter is used to set the functions of the input A4 Meaning 0 Input not active 1 External alarm instant A7 0 or delayed A7 gt 0 Input open alarm Input closed ok 2 Enable defrost Input open disabled Input closed enabled 3 Start
60. o remember that parameter dd dripping time stops the compressor and the evaporator fan after a defrost c2 c3 minimum compressor off on time These determine the minimum off time c2 and on time c3 for the compressor Compressor calls will be ignored until the times c2 and c3 have elapsed see Figs 4 e and Af Fig 4 e Key to Figs 4 c 4 f 1 instrument power up 2 compressor call 3 compressor 15 4 7 Defrost Forthe correct and safe use ofthe easy and easy compact controllers it is essential to program defrost cycles Type of defrost parameter dO The defrost may be performed by stopping the compressor heater or hot gas In addition it can be managed e by temperature using the defrost probe located on the evaporator In any case the defrost will end after a maximum settable safety duration The end defrost for maximum duration alarm Ed parameter A8 can be disabled e by time when there is no defrost probe e by time with temperature control heater only for a programmable time the defrost output is only activated when the temperature is below the end defrost threshold guaranteeing energy saving and defrosting of the evaporator even in more extreme situations see Fig 4 9 Fig 4 9 Key 1 defrost call 2 defrost temperature probe 3 defrost heater do type of defrostt type of end defrost 0 heater by temperature 1 hot gas 2 heater by time
61. ompact models 4 2 Temperature display The temperature displayed the unit of measure and the decimal resolution can be set according to the following parameters 4 5 and 6 4 select probe displayed Used to choose whether to display the temperature read by the control probe Probe 1 Probe 2 orthe status ofthe multifunction input analogue or digital 13 Parameter 4 selects the probe shown on the display all the other display and control modes remain unchanged A Important the easy compact models can display up to 2 probes 5 select C F Defines the unit of measure used for temperature control 5 0 to workin C 5 1 to work in F Warning when changing from one unit of measure to the other all the values of the temperature parameters are modified to the new unit of measure The max and min limits of the absolute temperature parameters are the same for both C that F The range of temperatures allowed is therefore different between C and F 6 disable decimal point Used to enable or disable the temperature display with the resolution to the tenths of a degree between 20 and 20 easy or 10 and 10 easy compact 6 0 6 1 temperature displayed to the tenth of a degree temperature displayed without the tenths of a degree Note the decimal point is only disabled in relation to the reading shown on the display the calculations performed by the controller remain unchanged
62. onnection cable is a twisted pair with shield and cross section from 0 5 to 1 5 mm AW6 22 24 CVSTDUMORO easy 120 ohm max 207 easy units a H easy CAREL 3 USER INTERFACE AND START UP 3 1 Displa 3 2 Keypads easy Keypad functions for easy and easy compact models C a l S X Y OS m fal ml i ow a HD A T pr 64 o i f ry IL ON 2 2 oO Fig 3 a Fig 3 0 but function normal operation start up but normal operation start up no ON OFF flash no pressing the button pressing with l compressor jon off call ON alone other buttons gt fan n ag al ON 1 more than 3 s switch pressed 3 defrost on off call ON ON OFF oe with 4 auxiliary output active output not ON ae deactivates output AUX active o 5 clock RTC RTC available RTC not ON if the cycle enabled available or clock is 5 ern a a tEN 1 and not enabled fitted cea ne N u set point RESET together atleastone tEN 0 or no er ME NEN more than 3 s current EZY 2 and 3 accesses the parameter set activate has been set i setting menu enter parameter 6 alarm alarm in noalarmin ON a cick password 22 reset prog prog mutes the audible procedure 7 digits three digits with decimal point and range 199 to lann buzze 999 See parameters 4 5 6
63. op hit or shake the device as the internal circuits and mechanisms may be irreparably damaged e do not use corrosive chemicals solvents or aggressive detergents to clean the device e do not use the product for applications other than those specified in the technical manual All of the above suggestions likewise apply to the controllers serial boards programming keys or any other accessory in the CAREL product portfolio CAREL adopts a policy of continual development Consequently CAREL reserves the right to make changes and improvements to any product described in this document without prior warning The technical specifications shown in the manual may be changed without prior warning The liability of CAREL in relation to its products is specified in the CAREL general contract conditions available on the website www carel com and or by specific agreements with customers specifically to the extent where allowed by applicable legislation in no case will CAREL its employees or subsidiaries be liable for any lost earnings or sales losses of data and information costs of replacement goods or services damage to things or people downtime or any direct indirect incidental actual punitive exemplary special or consequential damage of any kind whatsoever whether contractual extra contractual or due to negligence or any other liabilities deriving from the installation use or impossibility to use the product even if CAREL or its
64. out a message on the display see par 5 1 Table of alarms and signals on page 23 activates the buzzer if featured and stops the compressor due to external alarm immediate if A7 0 while the fan continues operating according to parameters FO PLEZA 63 Fa If the external alarm is detected during a defrost or a continuous cycle the controller stops these without completing the dripping and post dripping phases after the defrost When the alarm ceases the unit resumes normal operation and then e cc can be performed e defrosts can be performed e the compressor will start after the time set for parameter c2 minimum compressor off time Enable defrost contact open not enabled contact closed enabled A4 2 When A4 2 easy can be connected to an external contact for enabling the defrost this will then be activated only if the contact is closed and after the delay set for parameter d5 If the contact is closed when a defrost in progress the defrost is immediately stopped and the unit resumes normal operation without performing the dripping or post dripping phases The 5 LED starts flashing indicating that the defrost call is still pending awaiting enabling closing of the contact when the defrost restarts the timer dP is set to zero A4 3 _ Start defrost on closing The defrost call is generated when the digital input switches from open to closed When A4 3 easy can be connected to an external contact
65. r the time bands in which the value of the set point is modified This usually corresponds to the period in which the refrigerated cabinet is not used shop closed and when the curtain is down Contact Operation Operating mode Set point open normal direct reverse St closed night time direct St r4 reverse St r4 Table 4 i A4 5 Remote ON OFF contact open controller off contact closed controller on When A4 5 easy can be connected to an external contact for switching instrument on off ON OFF from external contact has priority over the keypad and the supervisor See par 3 4 Functions available from the keypad page 12 for further details on the functions of the instrument when OFF A4 6 Direct operation of AUX output with H1 3 contact open AUX output not active contact closed AUX output active When A4 6 easy can be connected to an external contact for controlling the auxiliary output H1 3 auxiliary output linked to the digital input A4 7 Door switch with evaporator fans off contact open door open contact closed door closed This is used to signal the door open alarm and stop the evaporator fan 19 Procedure for setting the digital input 1 make sure that the cold room door is fitted with a contact for signalling when the door is opened and closed 2 establish the time required parameters A7 time in minutes or d8 in hours to enable the pre alarm on the display and to stop
66. rameter relating to the required band e g d1d DEFROST TIME BAND 1 DAY setting press SET to display the status of the parameter use the UP and DOWN buttons until reaching the desired value press SET to temporarily save the new value and return to the previous display repeat the operation to set the values of the parameters d1h TIME BAND 1 HOUR setting dim TIME BAND 1 MINUTES setting atthe end ofthe operations press the SET button for more than 3 seconds to permanently save the selected values and exit RTC clock parameters tEn enable RTC tEn 1 RTC enabled dAY Current day of the week 1 7 Monday to Sunday hr Current hour 24h Min Current minutes Example to set the current time and date to 15 07 on Thursday 3 May 2007 set tEn 1 dAY 4 hr 15 Min 7 The controller will save and manage the time and the days of the week ignoring the month and the year Note the instrument does not manage automatic changeover to daylight saving Parameters for setting up to 4 defrost time bands did d4d Defrost event day setting did d4d 0 no defrost event did d4d 1 7 Monday to Sunday did d4d 8 from Monday to Friday did d4d 9 from Monday to Saturday did d4d 10 Saturday amp Sunday did d4d 11 every day d1h d4h Defrost event hour setting 24h dim d4m Defrost event minutes setting Example To program a defrost call did every Saturday amp Sunday at 19 31 set d1d 10 days d1h 19 hours dIm 31
67. s or with crimped contacts cable cross sect up to 2 5 mm Maximum rated current per terminal 12 A assembly terminal using screws from the front or with rear brackets display 3 digit LED display with sign 199 to 999 and decimal point six status LEDs operating conditions 10T50 C humidity lt 90 RH non condensing storage conditions 20T70 C humidity lt 90 RH non condensing detection range 50T90 C 581194 F resolution 0 1 EF front panel index of protection panel installation with IP65 gasket Case plastic terminal 81x36x65 mm classification according to protection against electric shock Class 2 when suitably integrated environmental pollution normal PTI of the insulating materials 250 V period of stress across the long insulating parts category of resistance to heat and fire category D UL94 VO 6 2 easy compact technical specifications power supply 230 Vac 10 15 50 60 Hz 115 Vac 10 15 50 60 Hz 12 Vdc 10 or 12 Vac 10 50 60 Hz PJEZM only without AUX relay rated power 0 5 VA inputs NTC or PTC probes 1 or 2 inputs relay output 2HP relay UL 12A 12FLA 72LRA 250VAC 30000 cycles EN60730 1 10 10 A 250Vac 100000 cycles 16A relay UL 12A resistive 5FLA 30LRA 250Vac 30000 cyc EN60730 1 12 2 A or 10 4 A N O only 250VAC 100000 cycles Type of probe
68. sents the effective duration of the defrost d4 defrost when switching the instrument on Starts a defrost when switching the instrument on d4 1 This has priority over the activation of the compressor and the continuous cycle Running a defrost when switching the instrument on may be useful in special situations e g frequent power failures Case 1 the system is subject to frequent power failures 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 power failure were in an extreme case greater than the defrost frequency e g a power failure every 8 hours against a defrost every 10 hours the controller 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 duration Case 2 Systems with many refrigeration units In this situation if the defrost on power up is activated d4 1 after a power failure all the units will start a defrost 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 ON Key 1 power up 2 voltage d5 defrost delay on power up or when enabled
69. sible 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 condensate The thermistor temperature probes NTC or PTC have no polarity so the order of connection of the ends is not important e use cable ends suitable for the corresponding terminals Loosen each screw and insert the cable ends then tighten the screws When the operation is completed slightly tug the cables to check they are easy easy compact 030220791 rel 2 0 30 05 2007 sufficiently tight The connections of the inputs and outputs depending on the models may be made e using traditional screw terminals e using plug in terminals with screw cable connection blocks e using plug in terminals with crimped cable connection blocks e using plug in terminals which significantly simplify the connection of the instrument both during installation and maintenance This also avoids connection errors as there are three connection blocks with a different number of pins Connect the inputs and the outputs following the diagram shown on the instrument label For the 12 Vac versions e if the power supply available is mains a safety transformer is required to ensure double insulation between the power supply and the very low voltage electronics If required a
70. sly for so as to lower the temperature even below the set point If cc 0 the continuous cycle is not activated The controller exits the continuous cycle procedure after the time set for parameter cc has expired or when reaching the minimum temperature see the minimum temperature alarm parameter AL c6 temperature alarm bypass after continuous cycle This is the time in hours during which all the temperature alarms are deactivated after a continuous cycle If the temperature of the refrigerated unit after the continuous cycle lowers due to inertia below the minimum temperature threshold set point AL the activation of the low temperature alarm is delayed for the time c6 In any case the continuous cycle is deactivated at the temperature set point AL CAREL 4 6 Compressor protection The easy and easy compact controllers are fitted with an automatic compressor protection system to avoid continual starts or stops of the unit The protection is based on the times in minutes set for parameters cO c1 c2 c3 c0 compressor and fan start delay on power up When the controller is powered up this delays the start of the compressor and the evaporator fan see Fig 4 0 c1 minimum time between consecutive compressor starts Delay between two consecutive starts of the compressor see Fig 4 d Note e if the maximum number of starts hour allowed is 10 simply set c1 6 to ensure this limit is observed e as well as c1 als
71. temperature measured by the defrost probe above the end defrost set point dt The defrost ends correctly atthe end of the pre set time see parameter dP e when reaching the set temperature dt When the defrost ends correctly the dripping equal to the time set for parameter dd and post dripping parameter Fd phases start The defrost ends early e from the keypad pressing the DOWN button for 3 s manual end defrost e due to an immediate external alarm IA e dueto a dirty condenser alarm CHt e by setting direct mode only without defrost r3 1 or reverse r3 2 e switching off e when requested from the supervisor e from digital input see parameter A4 2 the defrost call remains pending In these cases the early end of the defrost is not followed by dripping and post dripping A Important e the defrost is only available in direct mode that is when parameters r3 0 or A4 9 the latter has priority over r3 e using parameter dO and according to the model available type of defrost to be activated can be selected e the defrost has priority over normal temperature control it may also have priority over the compressor protectors see parameter d9 e during the defrost the temperature display can be frozen see parameter d6 e the continuous cycle has priority over the defrost Parameters for configuring the defrost dl interval between defrosts The defrost is performed perio
72. ters page 21 and finally set the parameters as desired The main parameters are as follows Control parameters st set point rd set point differential Defrost parameters do type of defrost dl interval between two defrosts dt end defrost temperature dP maximum defrost duration Alarm parameters Ad temperature alarm delay AL low temperature alarm threshold deviation AH high temperature alarm threshold deviation Table 3 e Note The procedure for modifying the parameters is described in par 5 2 Modifying the parameters page 24 O 3 4 Functions available from the keypad On and off Switching the instrument ON press UP for more than 3 s when pressing the button the display shows ON Switching the instrument OFF press UP for more than 3 s The display shows the message OFF alternating with the temperature measured by the set probe In off status the following functions are disabled if featured by the model e compressor control duty setting continuous cycle e defrost e fan control e alarms LO HI IA cht CHT e door switch A4 7 8 e buzzer when available While the following are enabled e temperature display alternating with the message OFF e parameter display and setting alarms E0 E1 E2 e the internal timer relating to parameter dl is updated If dl expires in OFF status a defrost is performe
73. the evaporator fan 3 enable the digital inout A4 7 When the door is opened the controller will start counting the pre alarm time and subsequently the dor alarm time After the pre alarm the controller will continuously signal the door open alarm the display will show the message dor alternating with the temperature value The dor alarm see par 5 1 Table of alarms and signals on page 23 can only be reset when the door is closed or alternatively when switching off the controller by pressing UP for 3 s on power up if the door is still open the pre alarm time will start counting again N Important setting A7 0 and d8 0 ignores the pre alarm times the display will show dor alternating with the temperature and the fan will not stop During the pre alarm A7 or d8 e the fan is stopped e the LEDs and temperature display flash excluding the compressor LED if on e the high temperature alarms are disabled e if the AUX auxiliary output is linked to the digital input H1 3 the auxiliary relay will be activated During the dor alarm at the end of the pre alarm A7 or d8 e the fan resumes normal operation e the display will show dor alternating with the temperature e the high temperature alarms are enabled e the buzzer sounds to mute this press SET or to disable set H4 1 Example Setting A4 7 and A7 10 on a cold room with door contact when the door is opened the
74. uration 4 12 Y Y Y Y Y Y Y Y Y enable disable keypad 4 12 Y Y Y Y Y Y Y Y Y enable disable buzzer 4 12 Y Y Y Y Y Y E y modified parameter detection 4 12 Y Y Y Y Y Y Y Y Y rapid parameter set selection 411 Y Y Y Y Y E Y Y z clock and time band management 4 10 Y Y Y z x Table 1 c available but cannot be set from the keypad nor the programming key 1 3 NTC and PTC probes 1 5 Definitions All easy and easy compact models use PTC and NTC probes conforming Continuous cycle function that runs the compressor for the set time to the CAREL standard with resistance values of 9850 at 25 C for the PTC and 10 kQ for the NTC Below are some codes of the more common Defrost function that controls the defrost of the evaporator CAREL Duty setting safety function that in the event of control probe faults code description operating index of starts the compressor at set time intervals range protection NTC HPOO NTC probe 6x15 mm 50150 C IP67 easy trademark of the PJEZ S X Y C M thermostats bulb plastic NTC WPOO NTC probe 6x40 mm 50T100 C IP67 easy compact more compact and economical version of the easy Aan Available in models PJEZ S M PTE WO0O PTC probe 6x40 mm 501100 C IP67 bulb metal 1 5 m long Table 1 c 1 4 Accessories e CAREL IROPZKEY programming key for duplicating the parameters e CAREL IROPZ48550 RS485 converter for the RS485 supervisory network easy easy compa
75. with 1 amp 2 probes 7 enable probe 2 alarm model M only E 0 1 0 0 M C1 probe 1 offset F 12 7 12 7 C F 0 S with 1 2 probes M with 1 amp 2 probes EZ probe 2 offset F 12 7 12 7 C F 0 S with_2 probes M with 2 probes St set point S r1 r2 IF A S with 1 amp 2 probes M with 1 amp 2 onde r1 minimum set point value C 50 r2 CFF 50 S with 1 amp 2 probes M with 1 amp 2 onde r2 maximum set point value C r1 99 C F 90 S with 1 amp 2 probes M with 1 amp 2 onde r3 select direct reverse operation C 0 2 0 S with 1 2 probes rd control differential F 0 19 C F 2 S with 1 amp 2 probes cO compressor and fan start delay on power up C 0 100 min 0 S with 1 amp 2 probes cl minimum time between consecutive compressor starts C 0 100 min 0 S with 1 amp 2 probes c2 minimum compressor off time E 0 100 min 0 S with 1 2 probes c3 minimum compressor on time C 0 100 min 0 S with 1 2 probes c4 compressor on time with duty setting C 0 100 min 0 S with 1 amp 2 probes CC continuous cycle duration C 0 15 h 4 S with 1 amp 2 probes c6 temperature alarm bypass after continuous cycle E 0 15 h 2 S with 1 amp 2 probes do type of defrost C 0 4 0 S with 1 amp 2 probes dl interval between defrosts F 0 199 h min dC 8 S with 1 amp 2 probes dt end defrost temperature set point F 50 127 C F 4 S with 2 probes dP maximum defrost duration F 1 199

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