Evco EVLJBOX HP Sequencer Manual
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Evco EVLJBOX HP Sequencer Manual

Evco EVLJBOX HP Sequencer Manual

Heat pump sequencer
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EVLJBOX HP
Sequencer
Application Manual:
Heat pump sequencer
144EJBSI104
Applications
Heat pump
|
Ready-to-install solution
|
LCD colour graphic display
|
6 capacitive touch keys
|
Electrical panel with full IP65
|
Display of the main variables of each
heat pump
|
Management of the main equipment functions
|
Management of up to 5 heat pumps
|
Automatic power modulation
|
Maximum number of active units
set by parameter
EVCO | 21.10.2020 | AZ
| 1

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Summary of Contents for Evco EVLJBOX HP Sequencer

  • Page 1 Display of the main variables of each Heat pump sequencer heat pump Management of the main equipment functions Management of up to 5 heat pumps Automatic power modulation Maximum number of active units set by parameter 144EJBSI104 EVCO | 21.10.2020 | AZ...
  • Page 2 EVLJBOX HP Sequencer - Application manual IMPORTANT Read this document carefully before installation and take all precautions before using the device. Keep this document with the device for future reference. Only use the device in the ways described in this document.
  • Page 3 EVLJBOX HP Sequencer - Application manual Index | Introduction | Purchasing codes | Measurements | Installation | Electrical connections |EVLJBOX HP Sequencer - User interface |Description of connectors |EVLJBOX HP Sequencer - Control module |Description of connectors |Electrical connection | User interface...
  • Page 4 EVLJBOX HP Sequencer - Application manual | Diagnostics |Manual and automatic alarms |Manual alarms |Automatic alarms |Table of alarms |Blocking alarms for the master |Blocking alarms for the slaves |Slave configuration alarm |Slave communication alarm |Evaporator high/low temperature alarm |Condenser high/low temperature alarm...
  • Page 5 EVLJBOX HP Sequencer - Application manual Introduction The EVLJBOX HP Sequencer is a control solution housed in an electric panel that makes it possible to control in sequence up to 5 heat pumps managed by programmable EVCO devices and interconnected with RS-485 serial communications systems.
  • Page 6 EVLJBOX HP Sequencer - Application manual Purchasing codes The table below shows the main features of the EVLJBOX HP Sequencer model available and the relative purchasing code Models Features Power supply 115... 230 VAC • Analogue digital inputs Evaporator supply water temperature probe (PTC/NTC/PT1000) •...
  • Page 7 EVLJBOX HP Sequencer - Application manual Measurements 150 mm 88.6 mm 004_EVLJBOX_Sequencer_Dimensioni_001_0.1_AZ 144EJBSI104 EVCO | 21.10.2020 | AZ...
  • Page 8 EVLJBOX HP Sequencer - Application manual Installation INSTALLATION PRECAUTIONS – Ensure that the working conditions are within the limits stated in the “Technical specifications” section. – Do not install the device close to heat sources, equipment with a strong magnetic field, in places subject to direct sunlight, rain, damp, excessive dust, mechanical vibrations or shocks.
  • Page 9 – Do not use the device as a safety device – For repairs and further information, contact the EVCO sales network; returned goods without the data label will not be accepted EVLJBOX HP Sequencer - User interface Description of connectors...
  • Page 10 EVLJBOX HP Sequencer - Application manual EVLJBOX HP Sequencer - Control module Description of connectors Connector 8 Connector 6 AO4 AO3 AO2 AO1 DI4 IN4 IN3 IN1 GND 12VS 5VS CAN+ CAN- EVLJBOX HP Sequencer Connector 7 Control module Connector 3...
  • Page 11 EVLJBOX HP Sequencer - Application manual Connector 7 Connector 8 Number Description Number Description USB port to programme the device AO4 analogue output (for 0-10 V or PWM signal) AO3 analogue output (for 0-10 V or PWM signal) AO2 analogue output (for 0-10 V or PWM signal)
  • Page 12 EVLJBOX HP Sequencer - Application manual Electrical connection heat pump heat pump heat pump heat pump heat pump EVCO 5 EVCO 4 EVCO 3 EVCO 2 EVCO 1 User interface Control module Mains supply (230 VAC) Power supply (115... 230 VAC) 144EJBSI104 EVCO | 21.10.2020 | AZ...
  • Page 13 EVLJBOX HP Sequencer - Application manual User interface Keypad Description of keys Keys Instructions ON/STAND-BY LEFT AND RIGHT UP AND DOWN ENTER Description of LEDs OFF DA TASTO Instructions Comunicazione con ON/STAND-BY slave non attiva ALARM POWER Switching the device on/off...
  • Page 14 EVLJBOX HP Sequencer - Application manual List of pages This section lists the main pages and menus used in the application. The main menu has three levels: – User – Servicer – Installer USER menu - Level 1 – Operating mode –...
  • Page 15 EVLJBOX HP Sequencer - Application manual Main page Viewing of the “main page” changes according to machine OFF DA TASTO status: – If the sequencer is on “OFF by key” or “OFF by alarm” – If the system is off or on Comunicazione con “main page”...
  • Page 16 EVLJBOX HP Sequencer - Application manual When the sequencer is switched on, two main screens are MASTER: SLAVES: 3 Att. available depending on the type of condenser configured in Condens. Evap. the slaves: 17.7 °C 36.5 °C – If it is a water condenser...
  • Page 17 EVLJBOX HP Sequencer - Application manual Status pages MASTER “Master screen” Modalità funz.: Estate When the “LEFT” and “RIGHT” keys are pressed on the T. regolazione: 28.0 °C “system off” or “system on“ screens, the individual status Setpoint: 24.0 °C | ZN: 3.0 °C...
  • Page 18 EVLJBOX HP Sequencer - Application manual “Evaporator mixing valve screen” VMIX EVAPORATORE This screen displays the following information regarding the evaporator valve: Temperatura: 34.0 °C – Temperature of regulation probe Setpoint: 30.0 °C Differenziale: 10.0 °C – Current regulation setpoint...
  • Page 19 EVLJBOX HP Sequencer - Application manual Servicer menu MANUTENTORE The “servicer menu” is level 2 and it is therefore necessary to enter the servicer level password (or that of a higher level) to view/change the parameters in this section. CONTATORI...
  • Page 20 EVLJBOX HP Sequencer - Application manual the parameters to manage the evaporator and condenser mixing valves can be set in this menu – “safety menu” all the parameters regarding the sequencer alarms can be found in this menu: – high/low temperature alarm setpoint and differentials –...
  • Page 21 EVLJBOX HP Sequencer - Application manual Alarm menu ALLARMI The “alarm menu” displays and resets master alarms and displays alarms in the configured slaves. MASTER AL att.: 0 >>> Press the “UP” and “DOWN” keys to choose the device SLAVE 1 AL att.: 3 >>>...
  • Page 22 EVLJBOX HP Sequencer - Application manual Info menu INFO The “info menu” displays the information regarding the version of the project and the controller firmware, including: SEQUENZIATORE – Project number V.984 . AA . 1 . 0 – Variation number 26/05/2019 15:33:20 –...
  • Page 23 EVLJBOX HP Sequencer - Application manual List of parameters Description of parameters Below is the list of parameters managed by the application. The following are given for each parameter: – a brief description – the range of admissible values –...
  • Page 24 EVLJBOX HP Sequencer - Application manual Configuration parameters table When the machine parameters are configured or changes made to the configuration parameters, it is advisable to switch the machine off and restart the system to allow the board to configure itself correctly.

  • Page 25: Table Of Contents

    EVLJBOX HP Sequencer - Application manual Code Parameter description Default U.M. Menu Notes PG02 Number of slaves in stand-by PG01 IS-CF PG03 Enable evaporator mixing valve NO (0) NO (0) YES (1) IS-CF PG04 Enable condenser mixing valve NO (0)

  • Page 26: 0) Yes

    EVLJBOX HP Sequencer - Application manual Code Parameter description Default U.M. Menu Notes Kind of regulation condenser valve PC10 0: Minimum ON IS-E 1: Enabling step Security PA01 Probe alarm delay IS-S Evaporator low temperature alarm PA02 -10.0 -15.0 PA04 °C...
  • Page 27 EVLJBOX HP Sequencer - Application manual Code Parameter description Default U.M. Menu Notes Enable system start-up/stop by the PH01 NO (0) NO (0) YES (1) IS-V supervisor Language: PH02 0: English IS-V 1: Italian Temperature unit of measurement: PH03 0: Celsius...
  • Page 28 EVLJBOX HP Sequencer - Application manual Regulations Machine status Procedures for switching the unit on and off: 1. Using the “ON/STAND-BY” key on the EPJgraph user interface – Switch on - from the “system off” page to prevent it accidentally being switched on which could cause problems with the sensitive MODBUS communication.
  • Page 29 EVLJBOX HP Sequencer - Application manual Main regulation Main regulation is a regulation in the incremental neutral zone based on the differential from the temperature setpoint of the regulation temperature. The procedure will be different according to the operating mode set by parameter MOdE.

  • Page 30: Pr01 Regulation Neutral Zone

    EVLJBOX HP Sequencer - Application manual The neutral zone is defined by the following parameters: – MOdE: Operating mode – SEtC: Summer/cooling setpoint – SEtH: Winter/heating setpoint – Pr01: Regulation neutral zone – Pr02: Percentage increase/decrease of neutral zone regulation –...

  • Page 31: Pr05 0: Inputs Only

    EVLJBOX HP Sequencer - Application manual Slave on/off sequence MODBUS communication enables the sequencer to obtain the alarms and status of every single slave. When an active unit is in a blocking alarm situation or is switched off, the application instantly activates the first available unit, fulfilling the system’s request for heat regulation.

  • Page 32: Pe02 Evaporator Valve Heating Setpoint

    EVLJBOX HP Sequencer - Application manual It is possible to set the type of regulation of the mixing valve between “Minimum ON” and “enabling step” using the parameters: PE10 for the evaporator PC10 for the capacitor. To use these adjustments, the minimum opening percentage of the mixing valve must be set using the parameters: PE05 for the evaporator PC05 for the capacitor.

  • Page 33: Condenser Valve Regulation Probe

    EVLJBOX HP Sequencer - Application manual The condenser mixing valve is based on the following parameters and operates differently according to the operating mode: – MOdE: Operating mode – SEtH: Winter/heating setpoint – PG04: Enable condenser mixing valve – Pr05: Inversion mixing valves inputs/outputs in heating mode –...
  • Page 34 EVLJBOX HP Sequencer - Application manual Diagnostics The application is able to manage a set of alarms relating to the configuration and communication: – of the slaves – of the evaporator temperature – of the condenser temperature – and other machine functions For the RTC alarm, it is possible to configure the type of manual or automatic re-arm through parameter PA11.
  • Page 35 EVLJBOX HP Sequencer - Application manual Table of alarms The table below lists all the alarms managed by the application. The alarms are presented in the order in which the alarms are shown when active. The alarms can all be seen even with the machine switched off.
  • Page 36 EVLJBOX HP Sequencer - Application manual Code HPRU AC22 Compressor 2 thermal switch AC23 Compressor 3 thermal switch AC26 Load pump thermal switch AC27 Source pump thermal switch AL11 Compressor discharge gas high temperature AL18 EVCM AL20 Inverter AL27 Phase sequence...
  • Page 37 EVLJBOX HP Sequencer - Application manual Code CHILLER AL06 Source flow switch AL83 Source antifreeze circuit 1 AL84 Source antifreeze circuit 2 EVM1 EVCM circuit 1 EVM2 EVCM circuit 2 AL07 Phase sequence AL08 Water level Slave configuration alarm When the application in the slaves or the type of condenser are not the same for all the configured slaves, the slave configuration alarm will be signalled AL01.
  • Page 38 EVLJBOX HP Sequencer - Application manual Evaporator high/low temperature alarm If the value of the evaporator input or output temperature exceeds the setpoint set by parameter PA04, the evaporator high temperature alarm will be signalled AL07. This is an automatic re-arm alarm and is view only. It will have no repercussions on regulations.
  • Page 39 EVLJBOX HP Sequencer - Application manual Condenser high/low temperature alarm These alarms are managed by the application only when there are slaves with a water condenser. If the value of the condenser input or output temperature exceeds the setpoint set by parameter PA08, the condenser high temperature alarm will be signalled AL09.
  • Page 40 EVLJBOX HP Sequencer - Application manual Technical specifications Type Description Purpose of the control device Function controller Construction of the control device Built-in electronic device Housing White, self-extinguishing Category of heat and fire resistance Measurements 150 x 245 x 88.6 mm...
  • Page 41 EVLJBOX HP Sequencer - Application manual Type Description Digital outputs 2 with SPST electro-mechanical relay, 5 A res. at 250 VAC The device guarantees reinforced insulation between each digital output connector and the rest of the components of the device.
  • Page 42 EVCO. The customer (manufacturer, installer or end user) assumes all responsibility for the configuration of the device. EVCO accepts no liability for any possible errors in this document and reserves the right to make any changes at any time without prejudice to the essential functional and safety features of the equipment.

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