Evco EVJS 500 Split User guide

EVJS 500 Split
Temperature/humidity controllers for refrigerated display
units with remote user interface
WARNING
Make sure you read and fully
understand the manual before
using this device.
Non-observance of these
instructions may result in death
or serious injury.
114JS50E4.00 - 04/2022
Installer manual

114JS50E4.00 ·EVJS 500 Split
CONTENTS
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IMPORTANT INFORMATION.............................................................................................................. 5
IMPORTANT SAFETY INFORMATION................................................................................................ 6
SAFETY INFORMATION RELATING TO THE PRODUCT..................................................................... 7
1. INTRODUCTION............................................................................................................................... 8
1.1 Description ............................................................................................................................................. 8
1.2 Features .................................................................................................................................................. 8
1.3 Accessories ............................................................................................................................................ 8
2. TECHNICAL DATA.......................................................................................................................... 10
2.1 Technical specications......................................................................................................................10
2.1.1 EVJS 500 Split ............................................................................................................................................10
2.2 I/O specications ................................................................................................................................11
2.2.1 Base board .................................................................................................................................................11
2.3 Remote user interface features .........................................................................................................11
3. MECHANICAL ASSEMBLY............................................................................................................ 12
3.1 Before you start ................................................................................................................................... 12
3.2 Information concerning installation and the surrounding environment .......................................12
3.3 Dimensions............................................................................................................................................13
3.3.1 Base board .................................................................................................................................................13
3.3.2 User interface............................................................................................................................................13
3.4 Installation............................................................................................................................................14
3.4.1 Base board .................................................................................................................................................14
3.4.2 User interface............................................................................................................................................14
3.4.3 Minimum installation distances for the base board ..............................................................................14
4. ELECTRICAL CONNECTIONS........................................................................................................ 15
4.1 Wiring best practices ..........................................................................................................................15
4.1.1 Wiring guidelines.......................................................................................................................................15
4.1.2 Guidelines for screw terminals ...............................................................................................................15
4.1.3 Permitted cable lengths............................................................................................................................16
4.2 Wiring diagram.....................................................................................................................................16
4.2.1 Base board .................................................................................................................................................16
4.2.2 User interface............................................................................................................................................17
5. USER INTERFACE .......................................................................................................................... 18
5.1 Interface ...............................................................................................................................................18
5.2 Touch keys ............................................................................................................................................ 18
5.3 Icons......................................................................................................................................................18
5.4 Using the controller .............................................................................................................................19
5.4.1 Controller ON/OFF ....................................................................................................................................19
5.4.2 Functions that can be activated via key..................................................................................................19
5.4.3 Changing the setpoint ...............................................................................................................................20

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5.4.4 Changing the intensity of light 1 and 2 ....................................................................................................20
5.4.5 Setting the clock ........................................................................................................................................21
5.4.6 Accessing the parameters .......................................................................................................................22
5.4.7 Programming menu...................................................................................................................................23
6. DEFROSTING.................................................................................................................................. 24
6.1 Introduction .........................................................................................................................................24
6.1.1 Operating conditions.................................................................................................................................24
6.1.2 Dripping interval........................................................................................................................................24
6.1.3 Defrost types .............................................................................................................................................25
6.2 Modular defrost: RTC ..........................................................................................................................25
6.3 Standard defrost..................................................................................................................................25
6.3.1 Electric heater defrost .............................................................................................................................25
6.3.2 Cycle inversion (hot gas) defrost.............................................................................................................27
6.3.3 Defrost on compressor stoppage............................................................................................................29
7. REGULATORS ................................................................................................................................. 30
7.1 Hot/cold temperature ......................................................................................................................... 30
7.1.1 Operation ...................................................................................................................................................30
7.2 Hot/Cold temperature with neutral zone ..........................................................................................30
7.2.1 Operation ...................................................................................................................................................30
7.3 Temperature and dehumidication with compressor .....................................................................31
7.3.1 Operation ...................................................................................................................................................31
7.3.2 Temperature priority over dehumidication .........................................................................................31
7.4 Humidity ................................................................................................................................................31
7.4.1 Operation ...................................................................................................................................................31
7.5 Humidity with neutral zone..................................................................................................................32
7.5.1 Operation ...................................................................................................................................................32
7.6 Compressor ..........................................................................................................................................32
7.6.1 Operating diagrams ..................................................................................................................................33
7.7 Dual Compressor .................................................................................................................................34
7.7.1 Operating diagram ....................................................................................................................................34
7.8 Evaporator fans....................................................................................................................................35
7.8.1 Operation ...................................................................................................................................................35
7.8.2 Operating modes .......................................................................................................................................35
7.8.3 Operation during a defrost.......................................................................................................................35
7.8.4 Evaporator fan operation during dripping .............................................................................................35
7.9 Condenser fans ....................................................................................................................................36
7.9.1 Operation ...................................................................................................................................................36
7.10 Energy Saving.....................................................................................................................................36
7.10.1 Operation .................................................................................................................................................36

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8. FUNCTIONS.................................................................................................................................... 37
8.1 Sanitising...............................................................................................................................................37
8.2 Analogue outputs ................................................................................................................................. 37
8.2.1 Humidity control ........................................................................................................................................37
8.2.2 Dimmed light ..............................................................................................................................................37
8.2.3 Modulating condensation.........................................................................................................................37
8.2.4 Humidication............................................................................................................................................38
8.3 Copying Parameters ...........................................................................................................................38
8.3.1 Introduction...............................................................................................................................................38
8.3.2 Uploading parameters from the controller to EVJKEY..........................................................................38
8.3.3 Downloading the EVJKEY parameters to the controller .......................................................................38
9. REMOTE COMMUNICATION ........................................................................................................ 39
9.1 EPoCA communication via TTL serial .................................................................................................39
9.2 EPoCA and third-party BMS communication.....................................................................................41
9.3 EPoCA communication via RS-485 serial...........................................................................................42
10. PARAMETERS.............................................................................................................................. 43
10.1 Table of conguration parameters ..................................................................................................43
11. DIAGNOSTICS ............................................................................................................................. 49
11.1 Table of alarms...................................................................................................................................49

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IMPORTANT INFORMATION
Liability and residual risks
EVCO assumes no liability for any damage caused by the following (by way of example; this is not an exhaustive list):
• Installation/useforpurposesotherthanthosespeciedand,inparticular,notadheringtothesafetyprovisionssetout
by current regulations in the country in which the product is installed and/or contained in this manual;
• Useinappliancesthatdonotguaranteesufcientprotectionagainstelectricshocks,wateranddustwithinthe
installation conditions created;
• Useinappliancesthatallowaccesstohazardouspartswithouttheuseofakeyedortooledlockingmechanismwhen
accessing the instrument;
• Tampering and/or modifying the product;
• Installation/use in appliances which do not comply with current regulations in the country in which the product is
installed.
The customer/manufacturer is responsible for ensuring their machine complies with these regulations.
EVCO’s responsibility is limited to the correct and professional use of the product in accordance with regulations and the
instructions contained in this manual and other product support documents.
TocomplywithEMCstandards,observealltheelectricalconnectioninstructions.Asitdependsonthewiringconfigurationas
wellastheloadandtheinstallationtype,compliancemustbeverifiedforthefinalmachineasspecifiedbytherelevantproduct
standard.
Disclaimer
This document is the exclusive property of EVCO. It contains a general description and/or a description of the technical
specifications for the services offered by the products listed herein. This document should not be used to determine the
suitability or reliability of these products in relation to specific user applications. Each user or integration specialist should
conducttheirowncompleteandappropriateriskanalysis,inadditiontocarryingoutaproductevaluationandtestinrelation
to its specific application or use. Users can send us comments and suggestions on how to improve or correct this publication.
Neither EVCO nor any of its associates or subsidiaries shall be held responsible or liable for improper use of the information
contained herein.
EVCOhasapolicyofcontinuousdevelopment;therefore,EVCOreservestherighttomakechangesandimprovementstoany
product described in this document without prior notice.
The images in this document and other documentation supplied with the product are provided for illustrative purposes only and
may differ from the product itself.
The technical data in this manual is subject to change without prior notice.
Terms and Conditions of use
Permitted use
Thedevicemustbeinstalledandusedinaccordancewiththeinstructionsprovidedand,inparticular,hazardousliveparts
must not be accessible under normal conditions.
The device must be suitably protected from water and dust with regard to its application and must also only be accessible with
the aid of a tool (with the exception of the front panel).
Only qualified personnel may install the product or perform technical support procedures on it.
The customer must only use the product as described in the documentation relating to that product.
Prohibited use
Anyuseotherthanthosedescribedinthe"Permitted use"sectionandintheproductsupportdocumentationisprohibited.
Disposal
The device must be disposed of in accordance with local regulations regarding the collection of electrical and
electronic appliances.
Consider the environment
Thecompanyworkstowardsprotectingtheenvironment,whiletakingaccountofcustomerrequirements,
technological innovations in terms of materials and the expectations of the community to which we belong. EVCO
placesgreatimportanceonrespectingtheenvironment,encouragingallassociatestobecomeinvolvedwithcompany
valuesandguaranteeingsafe,healthyandfunctionalworkingconditionsandworkplaces.
Please consider the environment before printing this document.

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IMPORTANT SAFETY INFORMATION
Please read this document carefully before installation; study all the warnings before using the device. Only use the device in
accordance with the methods described in this document. The following safety messages may be repeated several times in
thedocument,toprovideinformationregardingpotentialhazardsortoattractattentiontoinformationwhichmaybeusefulin
explaining or clarifying a procedure.
Thissymbolisusedtoindicateariskofelectricshock.
Itisasafetyindicationandassuch,shouldbeobservedtoavoidpotentialaccidentsorfatalities.
Thissymbolisusedtoindicateariskofseriouspersonalinjury.
Itisasafetyindicationandassuch,shouldbeobservedtoavoidpotentialaccidentsorfatalities.
DANGER
DANGER indicatesasituationofimminentdangerwhich,ifnotavoided,will lead to death or serious injury.
WARNING
WARNING indicatesasituationofimminentdangerwhich,ifnotavoided,may lead to death or serious injury.
CAUTION
CAUTION indicatesapotentiallyhazardoussituationwhich,ifnotavoided,could cause minor or moderate injury.
NOTICE
NOTICE indicates a situation not related to physical injuries but which ,ifnotavoided, could damage the equipment.
NOTE:themaintenance,repair,installationanduseofelectricalequipmentmustonlybeentrustedtoqualifiedpersonnel.
QUALIFIED PERSONNEL
Only suitably trained and experienced personnel capable of understanding the content of this manual and all documentation
regardingtheproductareauthorisedtoworkonandwiththisequipment.Furthermore,thepersonnelmusthavecompleted
coursesinsafetyandmustbeabletorecogniseandpreventtheimplieddangers.Thepersonnelmusthavesuitabletraining,
knowledgeandexperienceatatechnicallevel,andbecapableofanticipatinganddetectingpotentialriskscausedbyusing
theproduct,aswellaschangingthesettingsandmodifyingthemechanical,electricandelectronicequipmentfortheentire
systeminwhichtheproductisused.Allpersonnelworkingonandwiththeproductmustbeentirelyfamiliarwiththerelevant
standardsanddirectives,aswellassafetyregulations.

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SAFETY INFORMATION RELATING TO THE PRODUCT
Beforecarryingoutanyworkontheequipment,readtheseinstructionscarefully,makingsureyouunderstandeverything.
DANGER
RISK OF ELECTRIC SHOCK, EXPLOSION OR ELECTRIC ARC
• Only use electrically insulated measuring devices and equipment.
• Do not install the equipment while the power supply is connected.
• Cutoffthepowersupplytoallequipment,includinganyconnecteddevices,beforeinstalling/uninstallingthedevice.
• AlwaysuseaproperlycalibratedVoltmetertomakesurethesystemispoweredoff.
• Do not touch the unshielded components or the terminals while they are live.
• Donotopen,disassemble,repairormodifytheproduct.
• Do not expose the equipment to liquids or chemicals.
• Before applying voltage to the equipment:
• Makesureallprotectiveelements,suchascovers,hatchesandgrilles,arefittedand/orclosed.
• Checkallwiringconnections.
DANGER
RISK OF ELECTRIC SHOCK AND FIRE
• Do not use the device with loads greater than those indicated in the technical data section.
• Do not exceed the temperature and humidity ranges indicated in the technical data section.
• Usetherequiredsafetyinterlocks(fusesand/ormagnetothermalswitches)ofasuitablesize.
DANGER
RISK OF ELECTRIC SHOCK OR MALFUNCTIONING OF THE EQUIPMENT
Do not use damaged products or accessories.
WARNING
MALFUNCTIONING OF THE EQUIPMENT
• Perform the wiringcarefully,incompliancewithelectromagneticcompatibilityrequirements.
• Makesurethewiringiscorrectforitsapplication.
• Use shielded cables for all I/O signal and communication cables.
• Minimisethelengthoftheconnectionsasmuchaspossible,toavoidwindingthecablesaroundelectricallyconnectedparts.
• Thesignal(digitalandanalogueinputs,communicationandcorrespondingpowersupplies)andpowercablesforthedevice
must be routed separately.
• Beforeapplyingthepowersupply,checkallthewiringconnections.
• Usethenecessarysafetyinterlockswherevertheriskofinjurytopersonneland/orequipmentdamageexists.
• Installandusethisdeviceinacabinetofasuitableclassfortheintendedenvironment,protectedbyakeyedlocking
mechanism or other suitable instruments.
• Intermsofconnectionandthefusesusedinthecircuitsforthepowersupplyandoutputlines,observelocalandnational
regulatory requirements relating to the nominal current and voltage for the equipment in use.
• Do not use this equipment for machine functions that are critical to safety.
• Donotdisassemble,repairormodifytheequipment.
• Do not connect wires to unused terminalsand/orterminalsmarkedwiththetext“Noconnection”(“N.C.”).

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1.1 DESCRIPTION
EVJS 500 Split controllersrepresentacompletesolutionbyEVCO,suitableforthemanagementof:
• Wine/patisserie cabinets;
• Refrigerated cabinets;
• Refrigerated cold rooms.
1.2 FEATURES
The main features of EVJS 500 Split controllers are:
• 5analogueinputs,ofwhich:
• 4 are analogue inputs for temperature;
• 1 is an analogue input for humidity;
• 2volt-freedigitalinputsthatcanbeconguredviaparameter;
• 2 analogue outputs;
• 6 sealed relay outputs;
• 1 TTL serial port (on the user interface);
• 1 RS-485 serial port (on the user interface);
• EPoCA-compatible;
• Compatible with BMS interfacing via Modbus protocol.
NOTE:
forfurtherinformationregardinginputandoutputspecifications,pleaserefertoparagraph"2.1 Technical
specifications" on page 10.
1.3 ACCESSORIES
The accessories available for EVJS 500 Split controllers are:
Type P/n Description
EVHTP520 Humidity and temperature transducers
EVTP NTC/PTC temperature probes
EVIF25TBX BLEmoduleforconnectiontoEVconnectAPP
EVIF25TWX Wi-Fimodule
EVIF24TSX Module for TTL/RS-485 serial interface
1. INTRODUCTION

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Type P/n Description
EVIF23TSX ModuleforTTL/RS-485serialinterfacewithbuilt-inclock
EVJKEY Programming flash drive for EVJS models

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2. TECHNICAL DATA
AllthesystemcomponentsofEVJS 500 Split controllers satisfy European Community (EC) requirements for open systems. They
must be installed in casing or another location designated on the basis of specific environmental conditions and in order to
minimisetheriskofinvoluntarycontactwithhazardousvoltage.UsemetalcasingtoimproveEVJS 500 Split system immunity to
electromagnetic fields. This equipment satisfies the EC requirements as indicated in the tables below.
WARNING
MALFUNCTIONING OF THE EQUIPMENT
Do not exceed any of the nominal values specified in this section.
2.1 TECHNICAL SPECIFICATIONS
2.1.1 EVJS 500 Split
Type Description
The product complies with the following harmonised
standards:
EN60730-1 and EN60730-2-9
Device construction: Incorporated electronic device
Device purpose: Operating control device
Type of action: 1
Pollution category: 2
Overvoltage category: III
Nominal pulse voltage: Base board: 4000 V
User interface: 330 V
Power supply: Base board:115...230Vac,±10%,50/60Hz
User interface: 12 Vdc from base board
Consumption: 6VAmaximum
Ambientoperatingconditions:
0...55°C(32...131°F)10…90%RHnon-condensing
Transportation and storage conditions: -25...70°C(-13...158°F)10…90%RHnon-condensing
Software class: A
Ambientfrontprotection: Base board: IP00
User interface: IP65

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2.2 I/O SPECIFICATIONS
2.2.1 Base board
Type Description
Digital inputs: 2 voltage-free digital inputs
Analogueinputsfortemperature: 5 analogue inputs for NTC or PTC or humidity probe
Analogueoutputs: 2 configurable analogue outputs
Digital output (SELV): 6 digital outputs
Analogue input specications
Default
NTC
10 kΩ at 25 °C
BETA 3435
PTC
KTY 81-121
990 Ω at 25 °C
RH
EVHTP500
RH
EVHTP520
Pb1 Cold room
probe • •
Temperature Temperature
Pb2 Evaporator
probe • • --- ---
Pb3 Disabled • • --- ---
Pb4 Disabled • • --- ---
Pb5 Humidity probe
EVHTP520 --- --- • •
Range --- -50...120 °C
(-58...248°F)
-50...150 °C
(-58...302°F) 5...95%RH
Solution --- 0.1°C(1°F) 1%
Input
impedance --- 10kΩ 990Ω ---
Digital output specications
Relay output Default Description Load (at 250 Vac) Load type
Out1 Evaporator fans SPST 8A Resistive
Out2 Condenser fans SPST 8A Resistive
Out3 Door heaters SPST 8A Resistive
Out4 Defrosting SPST 16A Resistive
Out5 Light SPST 16A Resistive
Out6 Compressor SPDT 30A Resistive
2.3 REMOTE USER INTERFACE FEATURES
Type Description
Display: 2.8”graphicTFT,16colours
Display resolution: 320 x 240 pixel
Display range: -50...99 (large display decimals: -9.9...19.9)
Serial port: 1 TTL serial port

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3. MECHANICAL ASSEMBLY
3.1 BEFORE YOU START
Read this manual carefully before installing the system.
Inparticular,thesafetyinstructions,electricalrequirementsandcurrentregulationsforthemachineortheprocessinwhich
this device is involved must be observed. The use and application of the information contained herein requires experience in
thedesignandprogrammingofautomatedcontrolsystems.Onlytheuser,integratorormanufacturerofthemachinecanbe
familiarwithalltheconditionsandfactorswhichariseduringinstallationandconfiguration,operationandmaintenanceofthe
machineortheprocess,andassuchcanidentifytherelevantautomationequipmentandthecorrespondinginterlocksand
safety systems which can be used effectively and appropriately. When selecting automation and control equipment and other
connectedequipmentandsoftware,foraparticularapplication,youmustconsiderallapplicablelocal,regionalandnational
standards and/or regulations.
WARNING
REGULATORY INCOMPATIBILITY
Makesurealltheequipmentusedandthesystemsconformtoallapplicablelocal,regionalandnationalregulationsand
standards.
3.2 INFORMATION CONCERNING INSTALLATION AND THE SURROUNDING ENVIRONMENT
Beforecarryingoutanyworkontheequipment,readtheseinstructionscarefully,makingsureyouunderstandeverything.
DANGER
RISK OF ELECTRIC SHOCK, EXPLOSION OR ELECTRIC ARC
• Only use electrically insulated measuring devices and equipment.
• Do not install the equipment while the power supply is connected.
• Cutoffthepowersupplytoallequipment,includinganyconnecteddevices,beforeinstalling/uninstallingthedevice.
• AlwaysuseaproperlycalibratedVoltmetertomakesurethesystemispoweredoff.
• Do not touch the unshielded components or the terminals while they are live.
• Donotopen,disassemble,repairormodifytheproduct.
• Do not expose the equipment to liquids or chemicals.
• Before applying voltage to the equipment:
• Makesureallprotectiveelements,suchascovers,hatchesandgrilles,arefittedand/orclosed.
• Checkallwiringconnections.
WARNING
MALFUNCTIONING OF THE EQUIPMENT
• Performthewiringcarefully,incompliancewithelectromagneticcompatibilityandsafetyrequirements.
• Makesurethewiringiscorrectforitsapplication.
• Use shielded cables for all I/O signal and communication cables.
• Minimisethelengthoftheconnectionsasmuchaspossible,toavoidwindingthecablesaroundelectricallyconnectedparts.
• Thesignal(digitalandanalogueinputs,communicationandcorrespondingpowersupplies)andpowercablesforthedevice
must be routed separately.
• Beforeapplyingthepowersupply,checkallthewiringconnections.
• Usethenecessarysafetyinterlockswherevertheriskofinjurytopersonneland/orequipmentdamageexists.
• Installandusethisdeviceinacabinetofasuitableclassfortheintendedenvironment,protectedbyakeyedlocking
mechanism or other suitable instruments.
• Intermsofconnectionandthefusesusedinthecircuitsforthepowersupplyandoutputlines,observelocalandnational
regulatory requirements relating to the nominal current and voltage for the equipment in use.
• Do not use this equipment for machine functions that are critical to safety.
• Donotdisassemble,repairormodifytheequipment.
• Donotconnectwirestounusedterminalsand/orterminalsmarkedwiththetext“Noconnection”(“N.C.”).

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3.3 DIMENSIONS
3.3.1 Base board
134 (5.27)
mm (in.)
108 (4.25)
Fig. 1. EVJS 500 Split - Base board dimensions
3.3.2 User interface
111.4 (4.38)
76.4 (3.01)
25 (0.98)
-15.085
%
Over Temp
1h 30m
c
Fig. 2. EVJS 500 Split - User interface dimensions

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3.4 INSTALLATION
3.4.1 Base board
Installation of the base board EVJS 500 Split anticipates the use of plastic spacers (not provided).
Makesurethereisaminimumdistanceof10mm(0.39in.)betweentheEVJS 500 Split mounting base and base board.
3.4.2 User interface
1
0
7
,
6
(4.
2
4
)
72,6 (2.85)
mm (in.)
Fig. 3. EVJS 500 Split - User interface installation
3.4.3 Minimum installation distances for the base board
40 (1.57) 40 (1.57)
mm (in.)
40 (1.57) 40 (1.57)
Fig. 4. EVJS 500 Split - Base board minimum installation distances

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4. ELECTRICAL CONNECTIONS
4.1 WIRING BEST PRACTICES
The following information describes the wiring guidelines and best practices which should be observed when using the
equipment described in this user manual.
DANGER
RISK OF ELECTRIC SHOCK, EXPLOSION OR ELECTRIC ARC
• Only use electrically insulated measuring devices and equipment.
• Do not install the equipment while the power supply is connected.
• Cutoffthepowersupplytoallequipment,includinganyconnecteddevices,beforeinstalling/uninstallingthedevice.
• AlwaysuseaproperlycalibratedVoltmetertomakesurethesystemispoweredoff.
• Do not touch the unshielded components or the terminals while they are live.
• Donotopen,disassemble,repairormodifytheproduct.
• Do not expose the equipment to liquids or chemicals.
• Before applying voltage to the equipment:
• Makesureallprotectiveelements,suchascovers,hatchesandgrilles,arefittedand/orclosed.
• Checkallwiringconnections.
4.1.1 Wiring guidelines
Whenwiringthecontrollers,observethefollowingstandards:
• TheI/Oandcommunicationwiringmustbekeptseparatefromthepowersupplywiring.Thesetwotypesofwiringmust
be routed in separate ducts.
• Makesuretheoperatingenvironmentandconditionsfallwithinthespeciedvalues.
• Usewireswiththecorrectdiameter,suitedtothevoltageandcurrentrequirements.
• Use copper conductors (compulsory).
• Use shielded twisted pair cables for analogue/digital I/O connections.
Use correctly earthed shielded cables for all inputs or analogue outputs and for communication connections. If shielded cables
arenotusedfortheseconnections,electromagneticinterferencemaycausesignaldegradation.Degradedsignalscanresultin
unpredictable operation of the controller or the modules and connected equipment.
WARNING
MALFUNCTIONING OF THE EQUIPMENT
• Performthewiringcarefully,incompliancewithelectromagneticcompatibilityandsafetyrequirements.
• Makesurethewiringiscorrectforitsapplication.
• Use shielded cables for all I/O signal and communication cables.
• Minimisethelengthoftheconnectionsasmuchaspossible,toavoidwindingthecablesaroundelectricallyconnectedparts.
• Thesignal(digitalandanalogueinputs,communicationandcorrespondingpowersupplies)andpowercablesforthedevice
must be routed separately.
• Beforeapplyingthepowersupply,checkallthewiringconnections.
• Usethenecessarysafetyinterlockswherevertheriskofinjurytopersonneland/orequipmentdamageexists.
• Installandusethisdeviceinacabinetofasuitableclassfortheintendedenvironment,protectedbyakeyedlocking
mechanism or other suitable instruments.
• Intermsofconnectionandthefusesusedinthecircuitsforthepowersupplyandoutputlines,observelocalandnational
regulatory requirements relating to the nominal current and voltage for the equipment in use.
• Do not use this equipment for machine functions that are critical to safety.
• Donotconnectwirestounusedterminalsand/orterminalsmarkedwiththetext“Noconnection”(“N.C.”).
4.1.2 Guidelines for screw terminals
Suitable wiring for power supply and SELV I/O
Step 5.08 mm (0.199 in.)
Ø 3.5 mm (0.14 in.)
mm2
AWG
0.2…2.5
24…14
0.2…2.5
24…14
0.25…2.5
22...14
2 x 0.25…1
2 x 22…18
2 x 0.2…1.5
2 x 24…16
2 x 0.2…1
2 x 24…18
2 x 0.5...1.5
2 x 20...16
mm
in.
7
0.28 C0.5...0.6
4.42...5.31
N•m
lb-in
0.25…2.5
22...14
Fig. 5. Suitable wiring for power supply and SELV I/O

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Suitable wiring for the user interface
Step 3.5 mm (0.137 in.)
Ø 2.5 mm (0.09 in.)
mm20.14…1.5
28…1628…16
0.14…1.5 0.25…1.5
22...16
2 x 0.25…0.34
2 x 22…21
2 x 0.08…0.5
2 x 28…20
2 x 0.08…0.5
2 x 28…20
2 x 0.5...0.5
2 x 20...20
mm
in.
7
0.28 C0.22...0.25
1.94...2.21
N•m
lb-in
0.25…0.5
22...20
AWG
Fig. 6. Suitable wiring for the user interface
4.1.3 Permitted cable lengths
NOTICE
INOPERABLE EQUIPMENT
• Whenconnectingtheprobes,thedigitalinputsandthepowersupply,usecablesthatarenolongerthan10m(32.80ft.).
• WhenconnectingtheTTLserialport,usecablesthatarenolongerthan1m(3.28ft.).
• Whenconnectingthecontrollerpowersupplyandtherelayoutputs,usecablesthatarenolongerthan10m(32.80ft.).
4.2 WIRING DIAGRAM
4.2.1 Base board
GND
Out1 Out2 Out3 Out4 Out6
Out5
B- A+ 12 Vdc
Y
Pb1 (W)
Pb5 (B)
G
EVHTP520
Pb2 Pb3 ID1 ID2
Y = Yellow
W = White
B = Brown
G = Green
Y W B G
EWHTP520
19 20 21 22 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
910 11 12 13 14 15
123678
45
Pb4
AO1 AO2
GND
SIG
SIG
}
5 Vdc
12 Vdc
Power supply Power supply N.C.
Fig. 7. Wiring diagram - Base board
TERMINALS
1-2-3 Out5 relay output 29-30 Probe Pb3 input
4-5 Out6 relay output 29-31 ID 1 Digital input
6-7 Out4 relay output 29-32 ID 2 Digital input
7-8 Out3 relay output 33-34 AO1 analogue output
9-10 Out2 relay output 34-35 AO2 analogue output
11-12 Out1 relay output 36 Humidity probe input (G)
13-15 Power supply input. 14 = N.C. 37 Humidity probe input (B)
19..22 Connection to remote user interface 38-39 Probe Pb4 input
26
Humidity probe temperature input (Y) 40 Auxiliary12Vdcpowersupplyoutput
27
Humidity probe temperature input (W) 41 Auxiliary5Vdcpowersupplyoutput
28-29 Probe Pb2 input

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4.2.2 User interface
1 2 3 4
RS-485 (1) +
RS-485 (1) -
Vdc +
GND
Power supply
5 6 7
RS-485 (2) +
RS-485 (2) -
TTL
GND
USB
Fig. 8. Wiring diagram - User interface
TERMINALS
1-2
RS-485 serial (1) connection to base board USB Connection to USB
3-4 Power supply input TTL TTLserialconnectionforEPoCA
5...7 RS-485 serial (2) connection

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5. USER INTERFACE
5.1 INTERFACE
-17.560
%
Over Temp
Door open
°c
Fig. 9. User interface
5.2 TOUCH KEYS
Thetouchkeyfunctionsaredescribedbelow:
Keys... Tap and release to... Tap and hold for at least 3 seconds to...
--- • (From home)Accessthecongurationmenu
• (From standby)Accesstheprogrammingmenu
• Gobackalevel
• Exit a function
• Switch the instrument on/off
• Stop regulation
• Decrease a value
• Navigate within the menus ---
• Increase a value
• Navigate within the menus
• AccesstheAUXmenu
---
Activate/DeactivatetheLightrelay ---
• Conrmtheselectedvalue/function
• Accessthesetpointmenu ---
5.3 ICONS
Icon Lit steadily Flashing OFF
• Cold request
• Dehumidicationrequest Protection delay ON CompressorOFF
Defrost active
• Defrost delay ON
• Dripping ON
---
Evaporator fans ON
• Evaporator fan activation delay ON
• Humidication/dehumidicationcycleON
EvaporatorfansOFF
• Humidicationrequest
• Humidication digital output ON --- ---
• Dehumidicationrequest
• Dehumidification digital output ON Dehumidification delay with compressor ON ---
• Hot request
• Hot digital output ON --- ---
HACCP HACCPalarminmemory NewHACCPalarmregistered ---
Energy saving ON --- EnergysavingOFF
Maintenance request Remote connection ---
CTemperature shown in °C --- ---
FTemperatureshownin°F --- ---
%Humidityshownin% --- ---
AUX • AUXfunctionON
• AUXdigitaloutputON --- AUXfunctionOFF

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Icon Lit steadily Flashing OFF
LightrelayONfromkey Light relay ON from door switch LightrelayOFF
--- Alarminprogress ---
• Probe value below the setpoint
• Probe value above the setpoint --- ---
Keypadlocked --- ---
Keypadunlocked --- ---
Door switch open Door switch closed ---
Cycle active Cycle suspended due to the activation of
another function Cycle not active
Sanitising in progress with the
instrument ON Sanitising interval (if instrument is ON)
Demisting in progress --- ---
5.4 USING THE CONTROLLER
5.4.1 Controller ON/OFF
Toswitchthecontrolleron/off,pressandhold for at least 3 seconds.
-17.560
%
Over Temp
°c
Over Temp
Fig. 10. Main screen display Fig. 11. Controller switching off display
NOTE: the display will show the iconforafewseconds,asper"Fig. 11. Controller switching off display" on page 19,and
will then switchoff.Whenoneofthekeysispressed,the icon appears.
5.4.2 Functions that can be activated via key
EVJS 500 Splitcontrollersoffertheoptionofactivating,bytapping ,thefollowingfunctions:
• Sanitising; activates the sanitising function (if at least one uc1...uc6 output = 18);
• Defrost; activates defrosting if the conditions allow (see 6. Defrosting" on page 24);
• Over temp;forcesasetpoint1(temperature)otherthanthesetvalue,timed;
• Energy Saving; activates the energy saving function;
• AUX;activatesAUXrelay(ifu6 = 2);
• Demisting ; activates the glass demisting function (if at least one uc1 ... uc6 output = 14).
Select the function by tapping and confirm by tapping again.

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5.4.3 Changing the setpoint
To change the setpoint:
-17.560
%
Over Temp
Door open
°c
Setpoint
1
1 2
3
2
20.0
0/50 °C
Setpoint 2
1 2
0
10/95 %
Fig. 12. Changing the setpoint
5.4.4 Changing the intensity of light 1 and 2
-17.560
%
Over Temp
Door open
°c
Uscite
1
1 2
2
10 s
Luce 1 60
30
Luce 2
Fig. 13. Changing the intensity of light 1 and 2