Home

ERT 400 Electronic Control for Roof Top, Close Control

1. A sez 49 7 6 3 Single or separate cornidensatiOn duree e REI ARA TEE ERA Ere A A S EEEE cedere digg id 50 LGA ControlOf anti freeze electrical eaters coo eee erre n ae eve puce e i 50 7 6 5 Control of integrated electrical 51 7 6 6 Controlof hot water coil in anti freeze mode 4 peto rette eee edt i te e e Pete e eee tte eee eee teet se 53 7 6 7 Control of integrated hot water coil HEATING sseesessesseessecsecseeseessccsecnscssccuecuecsessscsuccuesuscasccsecuccuscuecssccuecuecasenscsuccuseaeessecsesuccasensesuecuceneeaecsecuecateneenseenees 53 Bir PUTCHOTIS cu M MU Een a Do M ECCO OM eas 8 1 Recording of operating hours 92 Defrosting i eios eere cette ilte e rein a s p ee aa DA 8 2 1 Start OF PI eril 8 2 2 Control during defrosting 8 2 3 so 83 Dehumidification 8 4 Humidification 8 5 Economizern c sh AE E AME MAR LG D ea 8 5 1 Freecooling Freeheating in Cooling mode eret cott tbe cotto itio ONERE VEON SRE VEON ERE dead RENNERS R RnS 59 8 5 2 Freecooling Freeheating in Heating mode 8 5 3 Freecooling Freeh ating in Enthalpy irren ertet R YER EEEE EEEO EEAS 61
2. Comp1 Comp2 Electric heater 1 Electric heater 1 cooling step request X change over 2nd cooling step request X X 1 heating step request X change over 2nd heating step request X X Example compressors heat pump not present or disabled ST4 lt r12 Comp1 Comp2 Electric heater 1 Electric heater 2 1st cooling step request X 2 d cooling step request X X 1st heating step request X if present 2nd heating step request X if present X if present Example with 1 compressor heat pump present Comp1 Comp2 Electric heater 1 Electric heater 2 1 cooling step request X 2nd cooling step request X 1st heating step request X 2nd heating step request X X if present The EKF400 RT keyboard is ignored 7 4 Provided that the unit is not configured as a condensing unit activation or de activation of the loads varies dynamically according to the selected temperature control functions the temperature pressure values measured by the probes and the configured set points Configuring the set points Two set points are defined Cooling set point this is the reference set point when the unit is regulated in Cooling mode Heating set point this is the reference set point when the device is regulated in Heating mode Set points are changed by modifying the relative parameters G01 cooling set point 602 heating set point The set points can be changed
3. 33 Configuration of compressors Compressors with 2 or 3 capacity steps 33 Configuration of compressors Compressors without capacity steps 32 Configuration of compressors Unbalanced list E 33 Configuration of digital inputs 18 Configuration of 36 Configuration of fan outputs 21 Configuration of fan regulator 37 Configuration of fan selection of the type of Configuration parameters CnF Configuring the set points Connection of base unit Control during defrosting Control during defrosting Compressors 54 Control during defrosting Condensation fans 54 Control during defrosting Evaporation fans 54 Control during defrosting Reversing valve 54 Control of anti freeze electrical heaters 48 Control of anti freeze electrical heaters Diagram of the anti freeze integrated electric heaters 49 Control of compressors temperature controller 45 Control of hot water coil in anti freeze mode 51 Control of integrated electrical heaters 49 Con
4. 6 Transformer 87 Pump evaporator fan parameters PUP 68 U Pump fan delay at start up assists stereos 40 Units of measurement R Units of measurement selection s s l 91 USE OF THE DEVICE Recording of operating hours 93 USER 2 24 Regulator RE ene den ter e ec 67 V Remote keyboard output ss 22 Ventilation parameters FAn 67 POSE E ER RUE 91 Visibility of parameters and submenus 31 toco M1 91 W RESPONSIBILITY AND RESIDUAL RISKS 89 Wiring diagram with NTC 14 Reversing VOlWe cede ettet preter 37 Wiring diagram with pressure probes 15 Reversing valves secet tentent ton ssl 37 Wiring ru s d S With EKF keyboard Lieu eet tene 35 With EKP EKW keyboards GOL M 91 25075 91 41 81 Eliwell amp Controlli s r l Via dell Industria 15 Zona Industriale Paludi 32010 Pieve d Alpago BL ITALY Telephone 39 0437 986111 Facsimile 39 0437 989066 Internet http www eliwell it Technical Customer Support Telephone 39 0437 986300 Email techsuppeliwell invensys com
5. 94 L M List of alarms Logd COBO aesti 100000 LOSS OF VORGE ocurriese Low voltage output configuration Low voltage outputs M Main enaractenms es 4 400 User Manual 103 104 Fest eise eee tiere ttes 91 T d uper T 22 Mechanical assembly of EKP 400 keyboard 10 DELP 91 Mechanical assembly of EKW 400 keyboard 10 R4 M 44 Mechanical assembly of keyboards 9 Single or separate condensation 48 MECHANICAL MOUNTING 7 SER O M M 87 Menu SCR uu mtr meat iens 29 bI 42 91 Models available aee ertet tertie 6 Start of Defrosting dans n 53 Mounting of 400 11 Start of Defrosting Defrosting start sequence 54 N Start of Defrosting lnterruption of timer 53 o A 42 Start of Defrosting Timer reset Night purging operating mode 43 SYSTEM CONFIGURATION Non volatile 91 T Number of events per hour 7
6. 1 SE 5 o dn 32524 EOV 40 indul eunssaud 3neuiojne 9AH2e JON f Jey3ip Aq payee 11 X X X f J9jeau 1 Jayeay m uej 11n2412 ue4 SA PA pei P29 euj531u puo Iv puo NOILdI32S3G ue o wo EZV 10 pue 51 ue H paepe enuey jou EE 701 68 Jenue N sN 143 oZy o sinou up jeuJ91u Jo Jaquinu Aq pa1eAne osje ZZY o jenba SWI 40 9zv pue ccv lt sIV 9n eA JI p31eAn e Z S1H SIV p lqeu Ajuo 60315 0 no s 10 p nn li yous seu angojeue se paunsiuod indui j abun yo no s 10 p ddun 1405 seu angojeue se indui 61V 4 4 x dy ZLV Sisasaysy 2 Ul BLY SWI ZLY lt LIV anjea ji sJo1ll giv eqoud 40 aJnjieJ inej aqoud Iv l nyesadwa 8 01 78 enue N d si 007 143 don oid Jayipiunu se 2 3ndui e i3ip q 2neuioiny pe1eAnoy jeuipiunH UODPAH2E ayelpawwi 4 SJ31eau 211729 v Jo Jew g s193eau se 2 21323 8 induijexsip jo uos qpeieAnoy 19 SJ91e2u 2123
7. d03 d04 d05 d06 d07 408 409 410 d11 d12 d13 d14 N01 N02 N03 N04 N05 N06 N07 N08 N09 N10 N11 N12 N13 N14 See Control of integrated hot vvater coil Activate hot vvater coil in anti freeze mode 0 Hot water coil in anti freeze mode not activated 1 Hot water coil in anti freeze mode activated 9 1 8 Defrosting parameters dFr Activation of defrosting 0 Defrosting de activated 1 Defrosting activated Start of defrosting temperature pressure It represents the temperature pressure below which the defrosting cycle is activated Defrosting interval request time It represents the time interval during which the probe remains below the defrosting start temperature pressure It is expressed in minutes End of defrosting temperature pressure It represents the temperature pressure above which defrosting starts Maximum defrosting time time out It represents the maximum duration of defrosting It is expressed in minutes Compressor valve waiting time anti vent It represents the waiting time at the beginning of the defrosting cycle between the shutdown of the compressor and the reversing of the 4 way valve Valve compressor waiting time at start of defrosting It represents the waiting time at the beginning of the defrosting cycle between the reversing of the 4 way valve and shutdown of the compressor Compressor valve waiting time at start of defrosting It r
8. 100 Set point heating 0 Water pump ON OFF See the diagram below ERT 400 User Manual 53 104 Analog output analogue output TEMP Al probe temperature Water pump water pump The pump has a minimum activation time equal to r78 In heat pump mode the active parameter is B07 When the heat pump is not activated the active parameter is B08 If the hot water pump is activated when the fan is switched off there is a delay between activation of the pump and the fan ERT 400 User Manual 54 104 Interruption of timer Timer reset 8 FUNCTIONS 8 1 Recording of operating hours The device stores the number of operating hours for the following in the non volatile memory e fan compressors Internal resolution is in minutes The values can be displayed by accessing the menu called Ohr see menu layout The whole value is displayed for values below 999 whereas the hours 100 value along with the decimal point is displayed for values above 999 The hours can be reset by pressing the DOWN button for two seconds see buttons while the operating hours are EP In the event of a power failure the last fraction of hour recorded is set to 0 and the duration is rounded off by default For example 1234 hours are displayed as follows 8 2 Defrosting The defrosting function is only active in Heating mode This function is used to prevent the formation of ice on the surface
9. H18 ID1 11D2 ID3 11D4 H19 105 ID6 ID7 ID8 H20 ID9 11D10 11D11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 1 0 0 0 1 1 0 0 2 0 1 0 0 2 0 1 0 0 2 0 1 0 3 1 1 0 0 3 1 1 0 0 3 1 1 0 4 0 0 1 0 4 0 0 1 0 4 0 0 1 5 1 0 1 0 5 1 0 1 0 5 1 0 1 6 0 1 1 0 6 0 1 1 0 6 0 1 1 7 1 1 1 0 7 1 1 1 0 7 1 1 1 8 0 0 0 1 8 0 0 0 1 8 0 0 0 9 1 0 0 1 9 1 0 0 1 9 1 0 0 10 0 1 0 1 10 0 1 0 1 10 0 1 0 11 1 1 0 1 11 1 1 0 1 11 1 1 0 12 0 0 1 1 12 0 0 1 1 12 0 0 1 13 1 0 1 1 13 1 0 1 1 13 1 0 1 14 0 1 1 1 14 0 1 1 1 14 0 1 1 15 1 1 1 1 15 1 1 1 1 15 1 1 1 H73 AM AI2 AM N01 ID12 ID13 ID14 ID15 N13 AI7 Als 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 1 0 0 0 1 1 0 2 0 1 0 0 2 0 1 0 0 2 0 1 3 1 1 0 0 3 1 1 0 0 3 1 1 4 0 0 1 0 4 0 0 1 0 5 1 0 1 0 5 1 0 1 0 6 0 1 1 0 6 0 1 1 0 7 1 1 1 0 7 1 1 1 0 8 0 0 0 1 8 0 0 0 1 9 1 0 0 1 9 1 0 0 1 10 0 1 0 1 10 0 1 0 1 11 1 1 0 1 11 1 1 0 1 12 0 0 1 1 12 0 0 1 1 13 1 0 1 1 13 1 0 1 1 14 0 1 1 1 14 0 1 1 1 15 1 1 1 1 15 1 1 1 1 0 Active vvith closed contact 12 Active with open contact 1 If all inputs must be active with open contact set H18 H19 H20 2 Inputs on base unit active with closed contact All inputs for expansion module active with open contacts useful when determining accident disconnection of the expansion module The digital inputs perform the functions described below by setting the parameters from H23 to H33 and from N02 N05 expansion P
10. from the EKVV400 RT S or EKP400RT keyboards by accessing the SET submenu see menu layout e froma PC with special interfacing hardware software Set points can be assigned values in a range determined by parameters H02 H01 Heating and H04 H03 Cooling With the EKF400RT keyboard the set points can only be modified by 5 C using the thermostat ERT 400 User Manual 46 104 Regulation parameters Modification based on outdoor temperature vvith positive offset Modification based on outdoor temperature vvith negative offset 7 5 Dynamic set point The regulator can be used to change the set point automatically according to external conditions This is done by adding a positive or negative value offset to the set point depending on the temperature of the external probe This function has two purposes to save energy or operate the machine in particularly harsh outdoor temperatures The dynamic set point is active if activation parameter is H50 1 the Al4 probe analogue inputs is configured as external temperature input H14 3 one of the digital inputs is configured as Window Input in these circumstances if the input is active the maximum offset in cooling H51 or heating H52 is added to the set point Dynamic set point control parameters H51 Max offset in Cooling mode H52z Max offset in Heating mode H53 External temperature set point in Cooling H54 External tempe
11. indui Ji payearpe aDUDJ no SI JO p ddun yous seu angojeue se paingijuod Ji payeape 224 H AB x dy n ql Uej JO 20 1 Se 1 1 jeiisip Aq pus 20 Se 3ndui X Jeusip Aq NOILLdI42S3G LIV eqoud 40 eJnjreJ yu oss ldulo2 U21IMS euusu giv eqoid 40 eJnjieJ siy qoud 40 mnile4 C JD uon esu puo2 yams jeuuau oss ldulo2 U23IMS 1 01 28 enue N 1SN 007 143 lun aseq pue p4eog ax u Ml q uonpolunululo2 OU SI 3194 114 1 12H quasaid pieoghay p sd s eded 54055210 102 Jo Jaquinu Jo uoneunSiuoo 154n220 suonipuoo SulMOo1101 y Jo euo uo ysea 3e JI Bale 3e4n31ju05 AL IIWOLLID uoneAne HOIH NO 1123101443 ALITVOLLISO NV4 H H TVN331NI NOIL23 LO3d U 1Ms NV4 TVN331NI ewy se 2 4 indui jejisip Suisn 02070dD43 bupu o no 51 10 p ddun paynss4id yous seu angojeue se p in3uuo yy eqoud jenuew B a indui ji pe3eArpe eunjre4 Kuo 64315 02 90V 4 fx dy SOV 10 91815 euJou ui ponad Jaye uMmopinus T V 104 91815 uueje ui ponad 90V uel Jaye payeaie o 4 jeuja1u Jo ALITVOLLISO yams nou sjua a NOIL23 1O ld yew Jo Jaquinu
12. yous seu angojeue se peungiuo5 giy eqoud ndui 1 po3eAnoe jo unile4 yo no s JO p ddun yous sey angojeue se painsiuod ziv ndui 1 po3eAnpe jo unile4 340 910U19J L S1V AO H Auo H x dy bupu 104 lqissod qo ul l jun uo OS E SI Jo Aq SJOssaJduio pue 1952 1252 puD1s UNA sup uonpsu puo lpnupul 10 Zuges Jo uwopinus 217 Auo apow ZLY SisasaysAy 03 enba 4 yeay jo LLY gt anjea noy sjuara uoneAn e indui 4 D 35A2E Jo Jaquinu yil riv o dn 12524 OLY 40 YUM 3ndui 9Aneja4 2 S03 3neuoine aoe ou YUM uy HX duund O H Jayeay 1 Jayeay uej 1in24m uej SA PA p pe p24 1284 puo NOILdI32S3G 34 402 80V jenba 4 nou sjuana jo o dn s z oneuso ne 60v 4 nou S U A qo s qulnu o dn s z gewone 80V 4 nou sjua a 10 Jaquinu o dn jasay 3neuioine dn 1463s JossaJduio2 YUM ZOV 40 pajeAnoe JossaJduio2 YUM Z V 40 ON duund O H 9AJEA g Ja3e2u pe 01 18 enue N 1SN 007 143 1 pen dus puoo fe no 51 JO p ddun yous seu angojeue se paingijuod JI pazyearpe 4 U21MS 1 4 Se yndul noe no SI JO p ddun yous seu angojeue se peungijuo
13. 1055 ay JI sd s qi ede se sindino y Pey ou aseald N xedy 1 91 40 0 91V 1 IN xedy z91V 10 0 91V 1 9 xedy 224 uonesuapuoo sj8uis 4 4 xedy 0 224 uonesuepuoo a3eJedss j V x dy poul 2 ui NO 901 4 1 xedy Ajuo jeusis asimiayjo 22 4 Ol x dy Auo jeusis asimsiayjo 6 f x dy Auo jeu3 s asimsayjo QZ 104 SI 90V Jl H xedy 1 SLY H AuO Z Z 102400 o s3 ol q 1 JI L L 3102412 0 sSuo eq 1I JI 9 qe wey Fan Operating Hours 9 If input Al5 is declared present H75 1 the alarms related to the differential pressure of the filter are activated There are three types of signalling Clogged filters Dirty filters Fan shutdown None of these alarms is active if the fan is deactivated unit OFF and reading of the input is bypassed for a period of time equal to A23 from activation of the fan See the diagram below Time OBSTRUCTED A26 DIRTY A25 REGULAR A24 FAN Evaporator fan OBSTRUCTED Clogged filter Al5 probe AI5 analogue inputs DIRTY Dirty filter Time time REGULAR Correct operating OFF Fan shut down If the number of operating hours of the fan reaches the parameter A20 a dirty filter alarm is generated A20 must be greater than 0 for the alarm to be activated If the number of operating hours reaches the param
14. Configures analogue input AI2 07 No probe 1 Anti freeze Temperature control NTC input 2 Multi functional digital input Configuration of input AI3 Configures analogue input AI3 07 No probe 12 NTC input for condensation circuit 1 2 7 4 20 mA input for condensation circuit 1 3 7 4 20 mA external environment humidity input Configuration of input Al4 Configures analogue input Al4 07 No probe 12 NTC input for external temperature 2 Multi functional digital input Configuration of input AI5 Configures analogue input AI5 07 No probe 1 Multi functional digital input ERT 400 User Manual 64 104 H16 H17 H18 H19 H20 H21 H22 H23 H24 H25 H26 H27 H28 H29 H30 H31 H32 H33 H34 H35 2 0 5V input Filter differential pressure 3 CO2 0 5Vdc input Configuration of input Al6 Configures analogue input Al6 0 No probe 1 NTC condensation input circuit 2 2 4 20 mA input for condensation circuit 2 3 4 20 mA humidity input recirculated air Pressure bottom scale value Pressure value associated with an analogue input value 1 or A16 of 20mA if configured as current input Example if a pressure transducer configured with 0 30 0 Bar 4 20mA threshold is used it is necessary to set H77 300 Polarity of digital inputs 1D1 ID2 ID3 ID4 Polarity of digital inputs ID5 ID6 ID7 ID8 Polarity of digital inputs 1D9 1D10 1D11 Humidity top scale value Minimum humidity value s
15. External humidity simulation n Freecooling Freeheating in Enthalpy with no humidity probe it replaces the reading by setting a constant value measured as a L16 Humidify set point in Heating mode See humidification L17 Humidify set point in Cooling mode See humidification L18 Humidify hysteresis See humidification L19 Dehumidify set point See Dehumidification L20 Dehumidify hysteresis See Dehumidification 121 Dehumidify shut down temperature differential See Dehumidification 122 Number of active steps in dehumidification See Dehumidification L23 NIGHT function activation time See Night purging L24 NIGHT function activation set point See Night purging L25 ECO offset in Heating Cooling mode If the EKF400 RT keyboard is used the value is added to subtracted from the cooling heating set point It is measured in C L26 Minimum damper opening CO set point See Air Pollution ERT 400 User Manual 72 104 Table of set point parameters Table of configuration parameters 9 1 11 Table of parameters The following table summarizes all the ERT 400 parameters SET POINT PARAMETERS measurement Cooling set point H04 Heating set point CONFIGURATION PARAMETERS Description Min Max Unit of measurement Maximum Heating set point G02 G01 C H02 Minimum Heating set point 40 0 G02 C Maximum cooling set point G01 90 0 C Minimum cooling set point G02 G01 C Number of circ
16. F12 F13 F14 F15 F16 F17 F18 F19 F20 F21 F22 9 1 4 Regulator RE Regulation band for compressors in cooling mode See Control of compressors temperature controller Regulation band for compressors in heating mode See Control of compressors temperature controller Regulation band for integrated electric heaters See Control of integrated electrical heaters Regulation delta for integrated electric heaters with heat pump activated See Control of integrated electrical heaters Regulation delta for integrated electric heaters with heat pump not activated See Control of integrated electrical heaters Regulation band for integrated hot water coil See Control of integrated hot water coil Regulation delta hot water coil with heat pump activated See Control of integrated hot water coil Regulation delta hot water coil with heat pump not activated See Control of integrated hot water coil 9 1 5 Ventilation parameters FAn Configuration of fan outputs 0 Proportional fan output from to 100 depending on parameters 1 Fan on off output in this mode the regulator performs the same calculations as the proportional output The only difference is that if it reads a value above 0 it outputs 100 2 On off operation on compressor request In this mode if the output is 0 and no circuit compressor is on it is 100 if at least one circuit compressor is on Fan pick up time Time during which the
17. Heat auto Auto The slide control is used to control the way the damper is opened auto automatically controlled by unit damper forced open The state can also be set using the digital input digital inputs on the EKF are called IDR1 IDR2 Refer to the table belovv IDR1 IDR2 STATE OPEN OPEN STATUS SELECTOR SET FOR NIGHT OR ECO OPEN CLOSED ECO CLOSED OPEN NIGHT CLOSED CLOSED OFF If the ECO and NIGHT states are forced the machine can still be switched off using the status selector The ECO state can also be activated using the digital input on base or expansion module with corresponding parameter 16 e The Damper forced open state can also be activated using the digital input on base or expansion module with corresponding parameter 18 OFF state can also be activated using the digital input on base or expansion module with corresponding parameter 2 ERT 400 User Manual 27 104 44 set 7X mode set 7X Status LED This LED indicates if the temperature has been reached GREEN control resources ON not lit control resources OFF This LED indicates the operating mode GREEN cooling mode RED heating mode NOT LIT standby This LED indicates the state of the evaporation fan NOT LIT fan OFF GREEN fan operating correctly GREEN BLINKING dirty filters RED
18. L04 Outdoor temperature 100 LO7 Inside temperature Damper Damper Outdoor temperature Outdoor temperature Inside Temperature inside temperature 8 5 3 Freecooling Freeheating in Enthalpy The ERT 400 economizer can also regulate the enthalpy of the air as well as the temperature Enthalpy is a thermodynamic property that takes into account both the temperature and the humidity of the air Enthalpic regulation is only possible if e free cooling is enabled 10721 the probe is configured as NTC external temperature analogue input H14 1 the AI3 probe is configured as 4 20mA external environment humidity input H13 3 or the AI8 probe expansion is configured as 4 20mA external environment humidity input N72 1 the Al6 probe is configured as 4 20mA recirculated environment humidity input H16 3 or the AI7 probe expansion is configured as 4 20mA recirculated environment humidity input N11 1 If no probe has been configured as an external air humidity probe then by setting the parameter L15 to a value that is not 0 this value is considered to be the external air humidity needed to calculate the enthalpy If probe Al4 is present and freecooling is enabled the control performs temperature freecooling at least If the 2 humidity probes are also present freecooling becomes enthalpic The external humidity probe is considered present even if there is no probe but the hypothe
19. s ya AR h l 13 Ar staollat nmucaeya a a 4 1 Wiring diagl atris xc dae vut 4 2 Configuration of analogue inputs 43 Config ration of digitalinputs ere dedere ed re itor ARA sis 44 Power output configuration 45 Low voltage output configuration 4 6 Remote keyboard Outputs eoe RR HR n DER e D RR REOR nes 4 7 Sertab Output oce een dee eo deo iet e aee eee deci tede diu 4 7 1 Copy Card device zu A OR iate uei ceni n rU d rM I OS 48 Units of medsurement rreren aia REESE DR ER dr DOR Eee RI e ER ER bo ar a Guess este maa 5 1 400 keyboard dra dabei be apo d d ara a d b E RR 5 2 EKP400 RT keyboard 5 2 1 Buttons seis 5 2 2 Displays 5 2 3 Display 524 WED SU n 5 3 EKWA0O RT S keyboard 4 ere eite AAA duet eene d eben euet AR 5 4 Programming of parameters Menu 15 2 eese tentent tette tente ten tette tenete ttn 30 5 4 1 Visibility of parameters and subrieHls s ertet ertet edil ae eee ue deese eee dea AO l 33 6 System COGTIELESLIOD uoce tob durent erroe vea E uis 34 6 1 LE 34 6 2 Configuration of compressors cessecseecnessecsessesseesecseesessecsecscsuecsesuecsesuecsscseesscsucsscsuecsesuecsecucsuecaesecaseseeaseaeecses
20. shared alarm relay O serial P connection to expansion module Q relay outputs not powered 1 compressor relay 1 2 7 configuration of relays 2 7 8 shared 9 alarm relay 10 shared alarm relay ERT 400 User Manual 15 104 VViring diagram with NTC 2 examples of NTC probe and pressure probe connections are shown below WW le C D usu Tar v epe eno posu s oz os pas e res one oo we ov os Connection with NTC sensors A LC filter using only CF Control B Phase cutting fan module C Connector A Alx Analogue input x IDx Digital input x ANx 0 10VDC output for fan control in circuit x D Connector B TCx Output for external fan modules circuit x NC not connected 12 V dc GND ERT 400 User Manual 16 104 VViring diagram vvith pressure probes lenp Ala ais Connection with 4 20mA inputs e Tre foro 9 107 os LI A LC filter using only CF Control B Phase cutting fan module C Connector A D Connector B Alx Analogue input x IDx Digital input x ANx 0 10VDC output for fan control in circuit x TCx Output for external fan modules circuit x NC not connected 12 V dc GND ERT 400 User Manual 17 104 Exp 402 expansion module connections type 1 Exp 405RH expansion module connections type 2 B oooooooooo oooooooooo Exp 402 expa
21. sir ERT 400 User Manual 2005 9 Cod 8MA10030 Invensys Controls Europe An Invensys Company
22. the compressor with more operating hours and finally the remaining compressor Example Let s imagine that the system is configured as follows NO1 Compressor 1 circuit 1 Step2 Capacity step of compressor 1 Step3 Compressor 3 circuit 2 Step4 Capacity step of compressor 3 If hours comp 1 hours comp 3 the start up sequence is Step3 gt NO1 gt Step4 gt Step2 The shutdown sequence is Step2 gt Step4 gt NO1 gt Step3 If all the compressors are off the first item to be turned on is the circuit that has the lowest average operating hours The average is calculated as the ratio between the total hours of compressors available and the number of compressors on the circuit In this circuit the first compressor to be started is the one with fewer operating hours followed by the compressor on the other circuit with fewest hours the compressor on the first circuit and finally the last compressor Example Let s imagine that the system is configured as follows NO1 Compressor 1 circuit 1 Step2 Compressor 2 Circuit 1 Step3 Compressor 3 circuit 2 Step4 Compressor 4 Circuit 2 If hours of comp 1 5 hours of comp 2 hours of comp 4 5 hours of comp 3 hours comp 1 hours comp 2 2 gt hours comp 4 hours comp 3 2 the start up sequence is Step3 gt Step2 gt Step4 gt NO1 The shutdown sequence is NO1 gt Step4 gt Step2 gt Step3 H08z1 and H09 0 EXAMPLE 1 COMPRESSOR VVITH ONE CAPACITY STEP PER CIRCUIT E
23. 0 2 Num Activation of dynamic set point 0 1 Flag Offset in Cooling mode with dynamic set point 50 0 80 0 C H52 Offset in Heating mode with dynamic set point 50 0 80 0 C Ext temp set point in Cooling mode with dynamic set point 127 127 C H54 Ext temp set point in Heating mode with dynamic set point 127 127 C Ext temp delta in Cooling mode with dynamic set point 50 0 80 0 C Ext temp delta in Heating mode with dynamic set point 50 0 80 0 C Offset 511 12 7 12 7 C Offset ST2 12 7 12 7 C Offset ST3 127 127 C 10 Kpa 10 H60 Offset 514 12 7 12 7 C ERT 400 User Manual 73 104 Table of Alarm Parameters Table of Compressor Parameters Offset ST5 12 7 12 7 C H62 Offset ST6 127 127 C 10 Kpa 10 H63 Offset ST7 12 7 12 7 C H64 Offset ST8 12 7 12 7 C 0 50 Hz 1 60 Hz 0 1 Flag 0 C 1 F 0 1 Flag Serial address of serie 0 14 Num Serial address of device 0 14 Num User password 0 255 Num H70 Copy card password 0 255 Num Keyboard present 0 1 Flag Holding time in heating or cooling mode 0 255 Minutes Polarity ST1 ST2 ST4 ST5 0 15 Num Configuration of ST1 if digital 0 24 Num H75 Configuration of ST2 if digital 0 24 Num Configuration of ST4 if digital 0 24 Num H77 Configuration of ST5 if digital 0 24 Num Activates digital regulation 0 1 Num Activates unbalanced circuits 0 1 Num Activates probe on remote keyboard 0 1 Num f one or more parameters in this category is changed the controller must b
24. 1 Keyboards There are 3 different types of keyboard EKW400 RT S Display 3 digits with sign 8 LEDs including the decimal point Analogue inputs 1 ambient temperature NTC 1 3 way screw connector 4 keys 4 keys S 122x80 mm Wall mounted Functions Changing operating mode setting parameters displaying analogue and digital inputs cannot be used to set auto and fan modes EKP400 RT 8 LEDs including the decimal point 34x76 mm Panel mounted using special fixing hole Functions Changing operating mode setting parameters displaying analogue and digital inputs cannot be used to set auto and fan modes EKF400 RT 3 LEDS 1 ambient temperature NTC 1 potentiometer for modifying set point Digital inputs 2 clean contacts ECONOMY FAN MODE Terminals 2 Screvv connectors 4 vvay for digital inputs 3 vvay for communication with base unit Buttons svvitches 2 4 position slides 1 2 position slide knob for modifying set point 5 C 110x80 mm Wall mounted Functions All operating modes can be set including Auto Fan Eco Night open Damper functions can also be activated No cable for version V EMC filter is used if the fan is to be modulated i e by phase cutting Other lengths available on request It is advisable to use a 1 8 m long cable The maximum length varies according to the data transmission speed Other lengths available on request It is advisable to use a 0 3 m long cable Lo
25. 2 Probes A Humidity probe EWHS280 dimensions 103x25 mm B Humidity probe EWHS300 dimensions 80x80x52 mm C Pressure probe EVVPA007 D NTC temperature probe 16 2 1 EMC filter If the fans are regulated by means of the cutting phase it is necessary to install a noise filter upstream from the power supply This filter removes the electromagnetic noise this control emits into the mains Param Manager If you have an adequate Personal Computer running Windows 95 or a higher version the Param Manager software and an adequate interface module and proper wiring it is possible to control all the device parameters by means of a Personal Computer The unit is easy to program thanks to a series of interfaces that offer a logical controlled fast and simple approach ERT 400 User Manual 99 104 PCI2150 gt For further information see the Param Manager manual PCinterface interface module This device enables the controller to interface with the PC gt For information on how to connect the device see the Param Manager Manual gt For information on the technical specifications of PCI2150 see the instruction sheet PCintertace The PC must be connected with the interface module and the interface module with the device with no power on to any of the devices and in compliance with current safety regulations It is also important to avoid electroshocks especially on the open metal surfaces of each u
26. If exceeded the outputs are proportionally deactivated so that the temperature falls within the specified limits Minimum temperature of outlet air Maximum value for values read by AI2 If exceeded the outputs are proportionally deactivated so that the temperature falls within the specified limits Outlet air regulation band Temperature band related to A30 and A29 temperature limits in which the maximum power of the installation is regulated according to the air temperature in order to control the temperature of the outlet air Alarm relay status with remote ON OFF Determines activation of the remote ON OFF alarm function 1 alarm relay ON 9 1 3 Compressor parameters CP Safety time OFF ON It represents the minimum time that must pass between the shutdown and start up of the compressor It is expressed in tenths of seconds Safety time ON ON It represents the minimum time that must pass between two subsequent starts of the compressor It is expressed in tenths of seconds Compressor start interval It can be used to set a delay for the start of two compressors Compressor shutdown interval It can be used to set a delay for the shutdown of two compressors Interval between capacity steps It can be used to set a delay between the activation of the compressor and capacity steps ERT 400 User Manual 68 104 b01 b02 b03 b04 b05 b06 b07 b08 F01 F02 F03 F04 F05 F06 F07 F08 F09 F10 F11
27. OFF if compressor 1 is inactive BLINKING at a rate of 1Hz 1 blink per second if safety timing is in progress BLINKING slowly if compressor is defrosting Compressor 2 LED or capacity step ON if compressor capacity step is active OFF if compressor capacity step is inactive BLINKING at a rate of 1Hz 1 blink per second if safety timing is in progress BLINKING slowly if compressor is defrosting compressor 2 LED or capacity step ON if compressor capacity step is active OFF if compressor capacity step is inactive BLINKING at a rate of 1Hz 1 blink per second if safety timing is in progress BLINKING slowly if compressor is defrosting Compressor 2 LED or capacity step ON if compressor capacity step is on OFF if compressor capacity step is off BLINKING at a rate of 1Hz 1 blink per second if safety timing is in progress BLINKING slowly if compressor is defrosting Resistance Boiler LED ON if the internal anti freeze electric heater or the boiler are on OFF if the internal anti freeze electric heater or the boiler are off Heating LED ON if the unit is in Heating mode Cooling LED ON if the controller is in Cooling mode If HEAT or COOL LEDs are not lit the controller is in STANDBY mode ERT 400 User Manual 29 104 5 3 EKVV400 RT S keyboard This is the same version as the EKP400 RT keyboard for wall mounting Z MODE 4 ON OFF E ECH400 The displays buttons and functions are
28. a unit with 2 circuits and one compressor per circuit see table below compressors 1 and 3 are enabled if the digital input of the thermal switch of compressor 2 is activated and connected to the compressor on the second circuit compressor 3 even if the alarm is displayed the compressor is not turned off since the compressor index is not 2 The capacity steps are turned off if the compressor to which they are related is in alarm mode The LEDs of the activated compressors refer to the step index Compressors without capacity steps 07 0 can be configured as follows Number of compressors per circuit 1 HO6 1 2 H06 2 vi m s NO1 Comp 1 circ 1 alarm index 1 E 1 HO5 1 NO1 Comp 1 circ 1 alarm index 1 Step2 Comp 2 circ 1 alarm index 2 he o g NO1 Comp 1 circ 1 alarm index 1 E 2 H 5z2 NO1 Comp 1 circ 1 alarm index 1 Step2 Comp 2 circ 1 alarm index 2 3 Step3 Comp 1 circ 2 alarm index 3 Step3 Comp 3 circ 2 alarm index 3 Step4 Comp 4 circ 2 alarm index 4 Number of compressors per circuit 3 06 3 4 H06 4 E 1 1 circ 1 alarm index 1 2 1 NO1 Comp 1 circ 1 alarm index 1 Step2 Comp 2 circ 1 alarm index 2 m 1 HO5 1 Step2 Comp 2 circ 1 alarm index 2 Step3 Comp 3 circ 1 alarm index 3 2 2 Step3 Comp 3 circ 1 alarm index 3 Step4 Comp 4 circ 1 alarm index 4 E o 2 E 2 05 2 Configuration error Configuratio
29. and configurable reset 9 external fan thermal switch condensation on circuit configurable reset 10 11 high pressure on circuit manual reset 12 13 low pressure on circuit immediate intervention and configurable reset 17 Fire smoke alarm automatic reset 19 humidifier alarm automatic reset 20 21 thermal switch of electric heaters manual reset 25 internal fan protection high criticality manual reset The digital input configured as remote 2 OFF also activates an alarm according to parameter A32 For further details refer to the Diagnostic section The keyboard has 2 digital inputs terminals that are not configurable for remote control DR1 Night Purging IDR2 ECO It operates as indicated in the table below IDR2 OPEN IDR2 CLOSED IDR1 OPEN Activates selection from keyboard Economy IDR1 CLOSED Night Purging Remote OFF The digital inputs have priority over the keyboard except in OFF status when the conditioner is switched off irrespective of the state of the inputs If moving the slide switches causes several configuration digital inputs to close e g both cool and heat modes are active the device does not effect a change over This is to prevent undefined states The control is fitted with jumpers that select if the control probe is on the base unit or the remote keyboard 4 4 Power output configuration The base module has 8 power outputs relays of which 6
30. be fitted with 2 different types of communication protocol Eliwell protocol for integration with Televis system Modbus protocol ERT 400 User Manual 8 104 3 MECHANICAL MOUNTING 3 1 Dimensions Dimensions of Dimensions of power board base module base module 108 6 107 5 Dimensions of expansion modules Dimensions of expansion module EXP 402 ERT 400 User Manual 9 104 Dimensions of expansion module EXP 405 Dimensions of keyboards Dimensions of EKP 400 keyboard 28mm 70mm 55mm 4 60mm Dimensions of EKW 400 keyboard Aa 12 10 ca 55 80 2 1210 99 50 1210 1 80 00 i 124 00 25 00 ERT 400 User Manual 10 104 Dimensions of EKF400 keyboard 120mm 3 2 Mechanical assembly of keyboards 3 2 1 EKW 400 keyboard connections The remote keyboard is connected by way of a screw terminal block situated inside the front section see the base unit keyboard connection diagram which can be accessed by removing the front with a screwdriver or a similar tool as shown in the figure The connections between the terminal block of the remote keyboard and the main unit are shown in the keyboard base unit connection diagr
31. electric heaters ERT 400 can control up to 4 anti freeze integrated electric heaters The electric heater output is only active if the relays power outputs are configured as electric heater 1 4 H35 H40 or N06 N10 11 14 Parameter r05 sets the number of electric heaters present Refer to the summary table belovv r05 Electric heater Electric heater Electric heater Electric heater 1 2 3 4 0 1 X 2 X X 3 X X X 4 X X X X If the outputs are configured as follows they control the activation and de activation of the electric heaters according to the r01 r06 configuration parameters as described below poem r ion i Configurat n On only when requested by the Always on in Defrosting mode Defrosting regulator mode Configuration in Cooling Off in Cooling mode On in Cooling mode depending on mod the anti freeze electric heaters regulator ai r03 Configurat n Off in Heating mode On in Heating mode depending on Heating mode the anti freeze electric heaters regulator r06 Configuration in OFF or Off in OFF and STANDBY Electric heaters on in OFF and STANDBY STANDBY The r04 parameter selects which probe the electric heaters regulate Configuration of electric heater Value of r04 parameters Description probe 0 Electric heater off 1 Regulation on Al1 2 Regulation on Al2 3 Regulation on Al4 P If the selected probe is missing or conf
32. following chapters 9 1 1 Configuration parameters CnF These parameters define the unit characteristics If one or more parameters in this category is changed the controller must be turned off and on again to operate correctly Cooling set point Sets the set point in Cooling mode Heating set point Sets the set point in Heating mode Maximum heating set point Sets the maximum set point in heating mode Minimum Heating set point Sets the minimum set point in Heating mode Maximum Cooling set point Sets the maximum set point in Cooling mode Minimum cooling set point Sets the minimum set point in Cooling mode Number of circuits on the unit x Selects the number of cooling circuits 0 Not admitted 12 1 Cooling circuit 2 2 Cooling circuits Number of compressors per circuit 0z No compressor 12 1 Compressor 2 2 Compressors 3 3 Compressors 4 4 Compressors Number of capacity steps per circuit 07 No capacity step 12 1 Capacity step per compressor 2 2 Capacity steps per compressor 3z 3 Capacity steps per compressor Compressor start up sequence 0 7 Based on operating hours 1 Fixed start up sequence Compressor selection algorithm 07 Circuit saturation 12 Circuit balancing Presence of heat pump 0 Pump not present 1 Pump present Configuration of input Al1 Configures analogue input 07 No probe 1 NTC inlet air input 2 Multi functional digital input Configuration of input AI2
33. heat pump If the digital input of the thermal switch of electric heaters 1 and 2 is activated electric heaters 1 and 2 are off and regulation is as below Example of r05 4 Electric heter EH EH4 SET POINT HEATING EH 3 B03 5 Temp Alt ERT 400 User Manual 52 104 Example of r05 2 Electric heter EH A SET POINT HEATING EH 3 B04 B05 Temp Al1 EHx electric heater x TEMP Al1 Al1 probe temperature If the heat pump is disabled because the external temperature is too cold parameter B04 is put to B05 and regulation takes place on the heating set point 7 6 6 Control of hot water coil in anti freeze mode The hot water coil serves two purposes it prevents ice from forming in the exchangers and the environment and acts as a regulator It is activated in anti freeze mode if r77 1 according to the same rules as the anti freeze electric heaters if present the water pump is activated and the valve fully opened 7 6 7 Control of integrated hot water coil heating The integrated hot water valve is regulated according to the following parameters e Temperature of inlet air X Heating set point 06 Regulation band for hot water valve on electric heaters in heating mode 07 Regulation delta hot vvater valve vvith pump activated 08 Regulation delta hot vvater valve vvith pump not activated r17 Hysteresis for deactivation of hot water pump Analog output
34. parameters of the different loads according to the type of plant that has to be controlled 6 1 Compressors ERT 400 is able to control plants with a maximum of two cooling circuits and 1 to 4 compressors Each compressor is energized by a device relay power outputs Each capacity step requires an additional output The first compressor must be connected to output NO1 the other outputs NO2 NO7 NO9 NO13 on the expansion module can be freely assigned by setting the values of parameters H35 H40 N06 N010 if the expansion module is present The compressors are turned on and off according to the measured temperatures and the temperature control functions set see chapter Control of Compressors Temperature Controller A compressor is turned off if no relay is associated vvith the compressor A compressor shut down alarm has been generated refer to alarm table safety timing is in progress the delay between pump on and compressor on is in progress there is a delayed start up between two compressors pre ventilation is in Cooling mode ERT 400 is on stand by or off the control probe is not on the base unit Al1 or the EKF400RT keyboard 6 2 Configuration of compressors Turning on another compressor or capacity step is considered a power step It is very important to identify the index of the active compressor so that the digital inputs connected to the compressor alarms can be set correctly For example by setting
35. s is are connected to must first be configured correctly the parameters used for this operation are H46 for the first circuit and H47 for the second one as show in the following table Parameter value Circuit 1 H46 Circuit 2 H47 0 Enables TC output for the cutting Enables TC output for the cutting phase phase 1 Enables output 4 20 mA 0 10V AN1 1 The PICK UP PHASE SHIFT AND IMPULSE DURATION parameters are important Every time the external fan is started the exchanger fan is supplied with maximum voltage Therefore the fan runs at maximum speed for a time equivalent to F02 counted in tenths of seconds after which it continues at the speed set on the regulator F02 Fan pick up time in tenths of a second If defines the delay that can be used to compensate for the different electric characteristics of the fan motors F03 duration in microseconds 200 of fan phase shift It defines the duration in microseconds 10 of the impulse that energizes the TC output F04 duration of triac energizing impulse 6 3 3 The fan regulator can be configured to generate a proportional output 0 100 or ON OFF output by setting the values of parameter F01 Configuration of fan regulator F01 Selects the type of output on regulator 01 0 Proportional fan output from 0 to 100 depending on parameters F01 1 Fan on off output in this mode the regulator performs the same calcul
36. set to 0 User password Can be used enter the password required to access second level parameters It can also be used to copy the parameters of the unit onto the Copy Card Password for parameter writing It represents the value that the password must acquire to copy the parameters onto the Copy Card Keyboard presence Holding time in heating or cooling mode Minimum status heating cooling holding time even if the temperature control requests a change over Time expressed in minutes Polarity Al1 AI2 AI3 Al4 0 Relay on with open input 1 Relay on with inactive input Configuration of AIT if digital As for H23 Configuration of Al2 if digital As for H23 Configuration of Al3 if digital As for H23 Configuration of Al4 if digital As for H23 Activates digital regulation 0 digital regulation not activated 1 digital activation activated Activates unbalanced circuits O unbalanced circuits not activated 1 unbalanced circuits activated Activates probe on remote keyboard 0 control probe on local keyboard 1 control probe on remote keyboard 9 1 2 Alarm Parameters ALL Low pressure pressure switch by pass time The delay between start up of compressor and start up of low pressure digital alarm diagnostics It is expressed in seconds Number of low pressure events per hour Number of low pressure digital alarm events per hour If exceeded the alarm will switch from automatic reset to manual reset Pressure switch bypass time f
37. shut down and the Al4 probe analogue inputs is configured as outdoor temperature input H74 71 If the integrated electric heaters and the hot water coil are activated the regulation deltas are changed according to the heating set points 8 9 Output temperature control If the output temperature read by the AI2 probe H72z1 is too high or too low the outputs are proportionally deactivated so that the temperature falls within the established limits Please refer to the diagram below POWER A30 A29 100 A31 A31 POWER Power Al2 Analogue input 2 If probe A12 is not present the function is disabled All the active outputs compressors electric heaters water valve and hot water coil can supply maximum power from this regulator There is no overriding and all outputs behave in the same way ERT 400 User Manual 63 104 G01 G02 H01 H02 H03 H04 H05 H06 H07 H08 H09 H10 H11 H12 H13 H14 H15 9 PARAMETERS The parameters can be set so that the ERT400 is fully configurable Parameters can be changed with Keyboard only EKVV400 RT S and 400 PC if the special connection and Param manager softvvare are available All the parameters are described in detail and divided into categories in the following chapters 9 1 Description of parameters All the parameters are described in detail and divided into categories in the
38. silent speed of fan in HEATING mode F17 Minimum fan speed temperature pressure set point in HEATING mode F18 Proportional band Fan in HEATING mode F10 Fan cut off delta F11 Cut off hysteresis ERT 400 User Manual 49 104 Fan control in Heating mode diagram q qq F19 Maximum fan speed in HEATING mode F20 Maximum fan speed temperature pressure set point in HEATING mode An example of interaction of these parameters is shown in the figure below OFF Temp Press Speed speed Temp temperature Press pressure If the circuit is in Defrosting mode and the condensation pressure is below F23 F24 the fan is switched OFF If the pressure is above F23 it is switched ON In the coil drainage phase when parameter 407 is not the fans run at the maximum speed in order to quickly disperse the water from the coil The cut off is bypassed for a period of time F12 calculated from compressor start up If the regulator requests a cut off during this interval of time the fan runs at minimum speed The fan will always be turned off if a condensing fan shut down alarm has been generated refer to alarm table ERT 400 is on stand by or off 7 6 3 Single or separate condensation Parameter F22 can be used to configure the units with 2 circuits and a single condenser Value 0 1 F22 type of condensation separate condensers single condensation If F22 0 the two fans op
39. 0 255 KJ Kg L14 Freecooling freeheating activation delta in enthalpy 0 255 KJ Kg L15 External humidity simulation 0 100 L16 Humidify set point in heating mode 0 100 LIZ Humidify set point in Cooling mode 0 100 L18 Humidify hysteresis 0 100 56 119 Dehumidify set point 0 100 56 120 Dehumidify hysteresis 0 100 26 121 Dehumidify shut down temperature differential 0 25 5 C L22 Number of active steps in dehumidification 0 4 Num 123 NIGHT function activation time 0 255 Min 10 L24 NIGHT function activation set point 127 127 C I25 ECO offset in Heating Cooling mode 12 7 12 7 C ERT 400 User Manual 76 104 L26 Minimum damper opening CO set point 100 ERT 400 User Manual 77 104 Alarms Number of events per hour 10 DIAGNOSTICS ERT 400 can perform a complete self diagnostics of the system by reporting a series of alarms Alarms can be activated and reset using parameters A01 A32 Some alarms can be de activated for a preset interval of time configured with the relative parameter The unit is also able to count the actual events for specific alarms if the number of alarms over the last hour exceeds the threshold set for the parameter the alarm switches from automatic to manual reset mode Alarms are sampled every 226 seconds Example if the number of events is set to 3 the duration of the alarm must be set on a value ranging from 2 226 seconds to 3 226 seconds to allow s
40. 04 is also observed Time C05 delay of capacity step start up is always observed between the start of a compressor or capacity step and the shut down of another compressor or capacity step on the machine The maximum safety time among all those available is always observed The stop time between compressors is not observed if a compressor shut down alarm is generated In this case the compressor is shut down immediately ERT 400 User Manual 37 104 On on and off off 2 comp sequence COMPR1 ON COMPR2 Time ON Time COMPR1 Compressor 1 COMPR2 Compressor 2 Time Time During defrosting only the 414 time is observed and the other timing signals are ignored This safety timing is active between the compressors between the capacity steps and between the compressors and capacity steps 6 3 Condensation fan This involves the fan unit located outside near the heat exchanger that normally serves as a condenser Obviously in heat pump operating mode the heat exchanger operates as an evaporator The ERT 400 has 3 connection configuration modes for the condensation fans Mode Output Characteristics Description TC Low voltage outputs Control signal for CF modules 500w Connection to CF modules 1500w 2200w Standard Low voltage outputs 4 20mA or 0 10V Standard command for fan control by way command of external module inverter Do not exceed the maximum permitted load
41. 3 B HUNDI Suis19 21 0 224 10 dn egs Ji Auo 4 x dy 20 4 10ssa1duio5 nou sjua a UM UNIDAD qo Jaquinu LOY 40 ainssaid MO7 SE 24 o dn 32524 yndul 55 3neuijoine 1e3131p Aq pa1eAnoe NO1 n z sJnssaJd U3 M se 2412 yndul 55 jenuey Jeuzip Aq 904 YUM p lqeu JI SI peo azaaJj nue y x dv 2cEV 4 TIV T 4JJO 910UJ8J se indui HO 5neuioiny Jeuzip Aq pa1eAne zow y Jayeay 1 sayeay ue 1 diNO2 SA PA 1 2213 euj5u puo Iv j 3 j auis NOILdI32S3G 34 402 01 08 enue N d si 007 143 noq 0 224 5 H Ajuo 4 x dy A PA ZOV 4nou S u A Jo dn 1483s 10 Jequunu o Jossajdwod dn 1252 oneulolne UNA a HND LOV 10 9JnssaJd Se C2 indui ainssaid JON 3X Z X Jeusip Aq p eAn e NO1 noq 55 31 se COD indui ainssaid enuen Z X Jeusip Aq p eAn e 123 80V dn es jenba 4 10sseuduio5 nou siusAa UM 47 YDUMS z Jo Jaquinu ZOV 104 184 se osse1duio o dn 12524 pajeAn2e yndul U21MS 2neuiojne 10N X 1eysip Aq jeuueur 213 9 3nO SI JO p ddun
42. 6 0 e doth e eed RU A s s 6 7 Loss Of voltage so rir ees i e ee ED ATA Ud Ani ad an QA AU R ARN 9 9 Heat pump shutsdOWn aaa eer AP pre dep mee pa e b p RD ER re 8 0 Output temperature Control ide eade eet ertet detto teet deesset adea ASA Sis Para ic mM P 9 1 Description of parameters eere ert SARA AT SA vene 9 1 1 Configuration parameters CnF 9 1 2 Alarm Parameters DL si 9 1 3 Compressor parameters CP ete ee ERREUR E HUI D iH SE HO b eer t s b s 9 1 4 Regulator RE 9 1 5 Ventilation parameters FAN soto trente fete i ne reete ide reete een Ep Bee NER tee ine RE Me e SERM 91 6 P mpJ evaporator fam parameters PP e t e ette e Hee E HO RR cot I E e pee i ep ee e eet ee sere 70 9 1 7 Anti freeze boiler parameters FRO 91178 Defrosting parameters GEM ne ae eH M E DERE EE UR DA REN EMO EIER Rie 9 1 9 Expansion module parameters ESP 9 1 10 Freecooling Humidity parameters FIC ssesssscsscscscsecsecsecsscceecescuecuscneessecsscuecsscsessuecuscuscssessscuccssessssuesuseucsuecsecuecseesessuecsscuscenessecuecssessesuesuseueesseeseeneees 72 9 1 11 Table ot parameters oett eet eot e te S te eg bte ER d d e ees 73 TS D EE DA 78 1041 List o
43. 6 Table of Alarm Parameter 72 o Table of analogue alarms 86 Operating Modes s 42 Table of Compressor Parameters 72 Operating modes configuration table 42 Table of configuration parameters 71 Output temperature control siiin 61 Table of Defrosting Parameters Outputs on expansion boards sss 21 Table of digital alarms P Table of Electric Heaters Hot H20 Coil Parameters ku 73 PARAMETERS Lus duse EROR RH Table of Expansion Module Parameters 74 Pe Table of Fan Parameters 73 Permitted USE M Table of Freecooling humidity parameters 74 Phase E M Table of parameters 71 BURA Table of Pump Evaporator Fan Parameters 73 Polarity of s d Table of Regulator Parameters Povver output configuration Table of set point parameters Power outputs Technical data Power steps TECHNICAL FEATURES s s n s s n PODES aede TEMPERATURE CONTROL FUNCTION 42 Programming of parameters Menu levels 28 Temperature controller in Heating mode 46 ivre D
44. AIT analogue inputs is configured as an NTC inlet air input H77 1 the compressor is controlled in accordance with the ambient temperature and SET POINT All temperature of inlet water or air SET HEAT Cooling set point entered using keyboard B02 regulator proportional band in heating mode Power STEP 4 STEP 3 STEP2 SET POINT STEP 1 Temp Al1 Power power STEP 1 1st step STEP 2 274 step STEP 3 3 step STEP 4 4th step Temp Al1 AI1 probe temperature ERT 400 User Manual 48 104 Cooling mode Fan control in Cooling mode diagram Q Heating mode 7 6 2 Condensation fan control The condensation fan control varies according to the temperature or condensation pressure of the circuit The regulator will be on if at least one probe per circuit is configured as a condensation probe pressure or temperature Otherwise the fan for the circuit activates and de activates according to the circuit compressors The fan control may be carried out independently of the compressor or every time a request is received from the compressors The operating mode is set with parameter F05 Value 0 1 F05 fan output mode The fan is off if all the circuit Control of condensation is carried out compressors are off independently of the compressor The cut off is bypassed for the amount of time F72 calculated from compressor start up If the regulator requests the cut off
45. BLINKING clogged filters RED alarm condition one or more of the alarms specified in the diagnostic chapter are present The Filters clogged dirty conditions are only indicated if the filter differential pressure analogue input is enabled and the correct alarm parameters have been set THERMOSTAT The knob is used to set a deviation from the set point according to the heat cool mode in use the deviation is algebraically added to the active set point the maximum value from halfway point to each of the limit switches is factory set 5 C 5 2 EKP400 RT keyboard A COMPRESSOR LED C MODE LED heat cool B RESISTANCE BOILER LED D SET BUTTONS 5 2 1 Buttons Only selects the operating mode if H49 0 and no EKF400 RT keyboard is connected If the heat mode is activated H48 0 each time you press the button the following sequence appears Stand by gt cool gt heat gt stand by If the heat mode is not activated H48 1 Stand by gt cool gt stand by In Menu mode the button becomes the SCROLL UP or UP value increase button It resets the alarms and changes the set point Press the button once to reset all inactive alarms that can be reset manually If the button is pressed for 2 seconds the unit displays the set point of the set mode The value can be changed by pressing the UP or DOWN buttons The value is saved by pressing the two buttons or when timed out In Menu mode it di
46. F REL MVV991300 Open board to svvitch condensation fans ON OFF Characteristics of this model maximum current 6A Faston connectors RS232 RS485 TTl converter vvith 12V PCinterface 2150 PCI5A3000000 zs auxiliary output TRANSFORMER TF411210 Transformer 230V 12A 5 6VA COPY CARD MW320500 Parameter programming key THREE PHASE FAN REGULATOR L D 312 42 0 1 12A 420V Triac PWM S00 Box IP55 L D 320 42 0T1 20A 420V Triac PWM S00 Box IP55 L D 312 42 0T1 12A 420V Triac PWM G00 Box IP22 L D 320 42 0T1 20A 420V Triac PWM G00 Box IP22 WIRING COLV0100 Wiring connector 1m long cables for connection of low voltage inputs and outputs EMC FILTER FT111201 LC mains filter PROBE SN691150 Temperature probe NTC 103AT 1 5 m Immersion probe SN850A1500 Temperature probe NTC 6X40 1 5m SILICONE SN8S0A3000 Temperature probe NTC 6X40 3 m SILICONE Cable RS 232 1500128 Length 1 8 m TTL cable 1500180 Length 0 3 m 30 cm Param Manager SLP05MX000000 Software used to control unit from a PC PCI5A3000000 Param Manager Interface module also called PCI FRONT PR111120 Rubber front sheath to guarantee a high degree of protection from external atmospheric agents Bus Adapter 150 BA10000R3700 Interface module for multipoint ModBus TD transducers Several models see List of fan modules or contact the Sales Office Humidity probes SN52 0000 lt EWHS300 gt SN56 0000 lt EWHS280 gt 16 1
47. G 35 Compressor 2222 36 Compressor timing Off on and on on sequence 1 Kedi 35 Compressor timing On off timing 35 Compressor timing On on timing 35 Compressor timing On on and off off 2 comp Ir ME 36 Compressor timing On on and off off timing 2 wi duns diene 35 ROUT Lr 0 0 HHQ 32 Compressors fixed start up sequence and balancing of circ its 35 Compressors fixed start up sequence and saturation of circuits 34 Compressors start up based on operating hours and balancing of circuits 34 Compressors start up based on operating hours and saturation of circuits 34 Condensation fO s s aee eee 36 Condensation jun control a esse 47 Condensation fan control Cooling mode 47 Condensation fan control Heating mode 47 Condensation Defrosting probes 40 Condensation Defrosting probes Separate or single condensation 40 PETE 05 671 RR 4 Configuration of analogue inputs 18 Configuration of compressors 32 Configuration of compressors Compressors with 1 capacity step
48. ON delay It sets a delay between the start up of the fan and the compressor It is expressed in seconds Unit OFF fan OFF delay It sets a delay between the shutdown of the unit and the fan It is expressed in seconds Activation of fan shut down in Defrosting mode 9 1 7 Anti freeze boiler parameters FRO Configuration of electric heaters in Defrosting mode Determines the operation of the electric heaters when the anti freeze function is activated 0 On only when requested by temperature controller 1 Always on in Defrosting mode Configuration of electric heaters activated in Cooling mode Determines electric heater operating in Cooling mode 0 Off in Cooling mode 1 On in cooling mode depending on the anti freeze electric heater regulators Configuration of electric heaters activated in Heating mode Determines electric heater operating in Heating mode 0 Off in Heating mode 1 On in Heating mode depending on the anti freeze electric heater regulator Configuration of control probe for antifreeze electric heaters Determines the control probe of the electric heaters in Heating mode 0 Not present 1 Regulation on probe AI1 2 Regulation on probe AI2 3 Regulation on probe AI5 Number of electric heaters present 0 electric heater present 1 1 electric heater present 1 2 2 electric heaters present 1 3 3z 3 electric heaters present 1 2 3 4 4 electric heaters present 1 2 3 4 Configuration of electric heaters in OFF o
49. ON to OFF This condition can severely damage system operating To prevent this problem hysteresis is defined as a tolerance range in which no status change occurs in our specific case if hysteresis of 1 C is set the compressor starts at 21 C set point hysteresis and stops at 19 C set point hysteresis This memory stores the data even when the unit is turned off as opposed to a volatile memory that deletes the data as soon as the unit is turned off This term indicates the switching of an operating mode example from Cooling to Heating mode The label found on the inside of the device is illustrated below BRAND PRODUCT NAME PRODUCT CODE CERTIFICATE CUSTOMER REF POWER SUPPLY FIRMWARE DESTINATION It contains the following information BRAND brand of the manufacturer PRODUCT NAME name of the product PRODUCT CODE product ID CUSTOMER REF customer code POWER SUPPLY power supply of the device FIRMWARE software version DESTINATION where device will be used CERTIFICATE product certification Enthalpy is a thermodynamic property that takes into account both the temperature and the humidity of the air In simpler terms if is like heat that is subtracted from or added to air to go from one humidity or temperature value to another Enthalpy is calculated using special tables or hygrometric formulas The first of these can be used to calculate the satura
50. The fan will be turned off if a condensing fan shut down alarm has been generated refer to alarm table 400 is on stand by or off 6 3 1 Control probes Condensation can be regulated by controlling the circuit pressure or controlling the temperature of the exchanger coil The analogue inputs probes used for controlling are for circuit 1 for circuit 2 If A13 is configured as a temperature input H73 1 the condensation on circuit 1 is regulated according to the temperature and all the regulator parameters must be considered as temperature values If ST3 is configured as current input condensation is regulated according to the exchanger pressure and the parameters must be considered pressure values The same applies for ST6 and the second circuit 6 3 2 Configuration of fan There are two possibilities Module connected to a power output TK mode ERT 400 User Manual 38 104 Fan on high voltage outputs Fan on low voltage outputs Pick up Phase shift Impulse duration Configuration of fan selection of the type of output e Reversing valve Module connected to a lovv voltage output TC mode or Standard Command f some of the relays have been configured as condensation fan outputs H35 H40 and N06 N010 3 or 4 they are on if the output of the regulator of each fan is greater than 0 and off in all other cases The type of analogue output that the fan control module
51. XAMPLE 2 COMPRESSORS PER CIRCUIT The first compressor to be turned on is the one with the lowest index followed by the capacity step the compressor on the other circuit and its capacity step The first item to be shut down is the capacity step of the compressor with the highest index followed by the compressor the capacity step on the other compressor and the last compressor Example Let s imagine that the system is configured as follows NO1 Compressor 1 circuit 1 Step2 Capacity step of compressor 1 Step3 Compressor 3 circuit 2 Step4 Capacity step of compressor 3 the start up sequence is NO1 gt Step2 gt Step3 gt Step4 The shutdown sequence is Step4 gt Step3 gt Step2 gt NO1 As above ERT 400 User Manual 36 104 Compressors fixed start up sequence and balancing of circuits e A Safety timing On off timing On on timing Off on and on on sequence 1 comp On on and off off timing 2 comp H08z1 and H09 1 EXAMPLE 1 COMPRESSOR VVITH ONE CAPACITY STEP PER CIRCUIT EXAMPLE 2 COMPRESSORS PER CIRCUIT The first compressor to be turned on is the one with the As above lowest index followed by the compressor on the other circuit the capacity step on the first circuit and the capacity step on the second one The sequence is reversed during shutdown Example Let s imagine that the system is configured as follows NO1 Compressor 1 circuit 1 Step2 Capacity step of c
52. a c 10 YDUMs JeWJay 1 5 enueiN se painsijuod 2u329 2 indui jo uos enueiN Aq euuau pue Ho s uej jeuJa1ur H pa3eAnoe enuey jou JI AH2E S1H umop inus up J SIY payqeua 01D40dDA3 A uo Jeusis ou Ji 1 ZZV 4 1 xady 120 01 Jenba s noq up jeuJ91ut Jo Jaquinu Aq pa1eAne osje ZZY o jenba aul 40 ZY lt SIV n PA JI C 91H p sn3uuo SER SIV pajqeus pe330 93 v91 93 UB Jo 193 Jaqeay 1 s p u ynnof 4 4 2 e pe 2213 puoo jv puo duo 5 l3uls 1 1 AdAL 4402 wo EZV 40 pue s ue JeuJa3ut JI pe1eAnoe enuen jou ue 10 UOHEAn E gey o EZV 10 SWI 40 PZV gt SIV vOL S8 enuen d sn 007 143 SPDO 19U10 3upi201q 3nou1M p zeldsip aq 0 sp u a3e3s le iip Aue uauM njesn s y3 wele z 20N epoui wee ui 51 0 Suojeq Ady 161 10559 ay JI X ul Jue sd s Aqi Ede se sindino au ION 91V o p fqns Jaduipp pue upj 103D10dDA a N Xedy eplous lu 2 21 OD Jo uoneuiuusjep JO peungijuo SIV 4 10 wee 5 1 Se paun3ijuod indul Jneuoiny WX X X X X WX X X 1e 31p J p lqeu 01 98 enue N d si 007 143 pow wee ui si 0 3 ol q u yey
53. am The cables must pass through the central hole in the rear section see the EKW dimensions a a suna ALL diagram ERT 400 User Manual 11 104 3 2 2 Mechanical assembly of EKW 400 keyboard The keyboard is designed to be wall mounted see diagram After removing the front part drill four 4 mm diameter holes in the wall at the recommended distances see the EKW dimensions diagram Fix the black rear side to the wall with four screws After carrying out the necessary connections close the front section of the keyboard by simply pushing it in place 3 2 3 Mechanical assembly of EKP 400 keyboard The keyboard is designed to be panel mounted see diagram Drill a 29x71 mm hole insert a tool and fix it in place with the brackets provided Do not assemble the keyboard in excessively dirty and or dirty locations because it is designed to be used in locations with normal degrees of pollution Always make sure that the area near the cooling slits of the device is adequately ventilated ERT 400 User Manual 12 104 29 71 A PANEL THICKNESS 0 5 1 1 5 2 2 5 3 mm 3 2 4 Panel cut out 3 2 5 Mounting of EKF400 EKF 400 for wall mounting consists of two parts the first connector master card is fastened to the wall and contains only the connectors the second main interface contains the electronics and all the controls and can be connected to the firs
54. and by and night operating modes control is effected on the cooling set point using the same control probe Parameter r77 determines the hysteresis for the set points of the anti freeze integrated electric heaters An example of operation is shown in the diagram below Power SET POINT Power power Temp temperature 7 6 5 Control of integrated electrical heaters If r15 1 the electric heaters are enabled to perform regulation as integrated heaters in Heating mode If this is the case in addition to being activated on the anti freeze regulator the electric heaters operate as in the diagrams below Electric heter EH EH 4 EH EH2 SET POINT HEATING EH 1 B04 B03 BOS Temp Alt eii X X C C ckKCK5 o EHx electric heater x ERT 400 User Manual 51 104 TEMP Ali All probe temperature Example with 2 electric heaters r05 2 Electric heter EH EH3 SET POINT HEATING EH 1 Temp Alt EHx electric heater x TEMP Ali probe temperature The cases in which r05 3 and r05 1 can be easily deduced The hysteresis for each step is determined by the regulation band divided by the number of electric heaters present There are 2 deltas for the heating set point b04 is the delta with the activated heat pump external temperature Heat pump activation set point b05 is the delta with the disabled
55. arameters H74 H77 N14 N15 analogue inputs configured as digital inputs Digital inputs Parameter value Description setting 0 Disabled input 1 Internal fan protection low criticality 2 Remote OFF 3 Remote Heat Cool 4 Thermal switch of compressor 1 5 Thermal switch of compressor 2 6 Thermal switch of compressor 3 7 Thermal switch of compressor 4 8 Thermal switch of external fans condensation circuit 1 9 Thermal switch of external fans condensation circuit 2 10 High pressure circuit 1 11 High pressure circuit 2 12 Low pressure circuit 1 13 Low pressure circuit 2 14 End of defrosting circuit 1 15 End of defrosting circuit 2 16 Window input economy set point 17 Fire smoke alarm 18 Damper forced open 19 Humidifier alarm 20 Thermal switch of electric heaters 1 and 2 21 Thermal switch of electric heaters 3 and 4 22 Request 1 cooling step 23 Request 1 heating step 24 Request 2 step 25 Internal fan protection high criticality mi If several inputs are configured with the same value the functions associated with the input perform a logical OR between the inputs ERT 400 User Manual 21 104 EKF400 RT Digital Inputs 9 99 Power outputs A digital input configured as below sets off an alarm internal fan protection low criticality immediate intervention and configurable reset 7 thermal switch of compressor immediate intervention
56. are fully configurable NO1 compressor 1 5 A resistive 125 230VAC HP 230VAC 1 8 HP 125VAC NO2 configurable 5 A resistive 125 230VAC HP 230VAC 1 8 HP 125VAC NO3 configurable 5 A resistive 125 230VAC 4 HP 230VAC 1 8 HP 125VAC NO4 configurable 5 A resistive 125 230VAC 4 HP 230VAC 1 8 HP 125VAC NOS configurable 5 A resistive 125 230VAC 4 HP 230VAC 1 8 HP 125VAC NO6 configurable 5 A resistive 125 230VAC 4 HP 230VAC 1 8 HP 125VAC NO7 configurable 5 A resistive 125 230VAC 4 HP 230VAC 1 8 HP 125VAC NOS cumulative alarm 5 A 125VAC 230VAC Res 4 HP 230VAC 1 8 HP 125VAC NO9 configurable 5 A resistive 125 230VAC HP 230VAC 1 8 HP 125VAC NO10 configurable 5 A resistive 125 230VAC 4 HP 230VAC 1 8 HP 125VAC NO11 configurable 8 A resistive 125 230VAC 4 HP 230VAC 1 8 HP 125VAC Exp 405RH expansion module NO12 configurable 8 A resistive 125 230VAC 4 HP 230VAC 1 8 HP 125VAC Exp 405RH expansion module NO13 configurable 8 A resistive 125 230VAC 4 HP 230VAC 1 8 HP 125VAC Exp 405RH expansion module The outputs NO2 NO7 can be configured with the parameters H35 H40 with values assigned as indicated below o Description Disabled Reverse valve circuit 1 Reverse valve circuit 2 Condenser fan circuit 1 Condenser fan circuit 2 Hot vvater pump Evaporator fan Povver step 2 Povver step 3 9 Povver step 4 10 Humidifier 11 He
57. are uploaded to the Copy Card This operation can be performed as described below Insert the Copy Card when the unit is on Go to menu 55 e The message is displayed Enter the passvvord that corresponds to the value of parameter 70 Press both keys for a fevv minutes until PSS reappears on the display Disconnect the Copy Card The Copy Card is formatted before the UPLOAD This operation deletes all the data on the Copy Card This operation is irreversible DOVVNLOAD data copied from a COPY CARD to a UNIT Programming parameters are loaded into the unit This operation can be performed as described below Insert the Copy Card when the unit is off e Turn the unit on Occ is displayed when uploading is completed Err is displayed if the copy operation fails e Turn the unit off Disconnect the Copy Card Turn the unit on 4 8 Units of measurement Parameter H66 can be used to display the temperature in C or F H66 Unit of measurement 0 C degrees 1 F degrees Remember the relationship between the two units of measurement F Cx9 5 32 ERT 400 User Manual 25 104 on o 5 USER INTERFACE The user interface consists of keyboards that can be connected to the unit each type of keyboard provides different controls and functions Three types of keyboard can be connected EKF400 RT simplified wall mounted EKWA00 RT S wall mounted 400 re
58. arity of ST7 ST8 As for H23 Configuration of ST7 if digital As for H23 ERT 400 User Manual 71 104 N15 Configuration of ST8 if digital As for H23 9 1 10 Freecooling Humidity parameters FrC L01 Enable free cooling O Freecooling freeheating not enabled 1 Freecooling freeheating enabled L02 Freecooling offset in Cooling mode The freecooling set point is calculated by subtracting the value in parameter L02 measured in C from the cooling set point L03 Freecooling Freeheating band in Cooling mode See Economizer L04 Freecooling offset in Heating mode See Economizer L05 Freecooling Freeheating band in Heating mode See Economizer L06 Freecooling freeheating activation delta See Economizer L07 Minimum damper opening See Economizer L08 Freecooling shut down set point See Economizer L09 Freecooling shut down delta See Economizer L10 Enthalpic freecooling freeheating set point in Cooling mode Freecooling freeheating set point in Cooling mode measured in Kj Kg L11 Enthalpic freecooling freeheating band in Cooling mode See Freecooling Freeheating in Enthalpy L12 Enthalpic freecooling freeheating set point in Heating mode Freecooling freeheating set point in Heating mode measured in Kj Kg L13 Enthalpic freecooling freeheating band in Heating mode See Freecooling Freeheating in Enthalpy L14 Freecooling freeheating activation delta in enthalpy See Freecooling Freeheating in Enthalpy L15
59. art up of compressor thermal switch digital alarm diagnostics It is expressed in seconds This bypass time is only active in Heating mode Anti freeze alarm set point Temperature below which the anti freeze alarm is activated Anti freeze alarm hysteresis Differential for A77 anti freeze alarm temperature limit also acts as differential with sign inverted for A15 over temperature alarm Number of anti freeze alarm events per hour Number of anti freeze alarm events per hour If exceeded the alarm will switch from automatic reset to manual reset ERT 400 User Manual 67 104 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 A26 A27 A28 A29 A30 A31 A32 c01 c02 c03 c04 C05 Anti freeze alarm probe This parameter can be used to disable the alarm or select the alarm control probe 0 alarm inactive 1 All probe on base unit or remote keyboard 2 probe AI2 3 probe Al3 Activation of fan shut down with anti freeze alarm 0 fan not shut down 1 fan shut down Fan status with fire alarm 0 fan off and damper closed 1 fan on and damper closed 2 fan on and damper open 3 fan off and damper open Compressor status caused by over temperature alarm Disables shut down of compressors if temperature is too high Duration of over temperature Determines the time elapsing before high temperature alarm is activated Deactivation of compressors with high temp
60. ater step 1 12 Heater step 2 CO NI HD UT l o ERT 400 User Manual 22 104 Polarity of relays 4 Outputs on expansion boards P q Low voltage outputs Configuration of fan outputs 13 Heater step 3 14 Heater step 4 15 Damper 16 Defrost relay The polarity of outputs NO2 NO5 can be configured with the parameters H41 H45 the polarity of output NO8 can be configured with the parameter H45 07 relay on for active output 1 off for active output The other relays have relay on polarity if the output is active The power outputs on the expansion boards be configured with the parameters N06 N07 NOS N10 for Exp 405RH expansion module in the same way as above The outputs on the expansion boards have relay on polarity if the output is active If several outputs are configured with the same resource the outputs will be activated in parallel The maximum load on the different outputs at the same time MUST NOT exceed 8A 4 5 Low voltage output configuration The base module has 5 low voltage outputs TC1 PWM output for external module fan control on first circuit TC2 PWM output for external module fan control on second circuit e AN 0 10Vdc output fan control on first circuit e AN2 0 10Vdc output fan control for second circuit hot water valve 0 10 Vdc output for damper contro
61. ating hours threshold 0 1421 Cloggedfanoperatinghoursthreshod A22 Activate fan with clogged filter shut down 0 1 A23 Fan activated filter differential pressure bypass A24 Shut down fan differential pressure set point A25 fan differential pressure set point 0 i EMI 5 9 Duration of differential pressure activated by dirty or clogged filter signal m Duration of differential pressure activated by shut down fan signal 429 Maximum temperature of outlet air 1430 Minimum temperature of outletar 00 61 77 17 1431 Outletairregulationband 0 255 C A32 Alarm relay statuswithremoteON OFF 0 1 Fag Clogged fan differential pressure set point 255 2 2 A2 2 A2 A2 Seconds A2 COMPRESSOR PARAMETERS Par Description Min Max Unit of measurement C01 safety time for 255 Seconds 10 C02 Safetytiming between two subsequent starts 255 Seconds 10 Compressor Compressor start up interval 255 Seconds C04 Compressor Compressor shutdown interval 255 Seconds C05 Interval between capacity steps d o 25 Seconds ERT 400 User Manual 74 104 Table of Regulator Parameters Table of Fan Parameters Table of Pump Evaporator Fan Paramete
62. ations as the proportional output The only difference is that if it reads a value above 0 the regulator output becomes 100 F01 2 On off operation set by the compressor in this mode the output is 0 if no circuit compressor is on and 100 if at least one circuit compressor is on If some of the relays have been configured as condensation fan outputs H35 H40 and N06 N010 3 or 4 they are on if the output of the regulator of each fan is greater than 0 and off in all other cases 6 4 The reversing valve can only be used with a heat pump ERT 400 can control a maximum of 2 reversing valves on plants with 2 circuits Reversing valves The reversing valve on circuit 1 is only active if a relay power outputs is configured as reversing valve circuit 1 H35 H40 or N06 and 10 1 The reversing valve on circuit 2 is only active if a relay povver outputs is configured as reversing valve circuit 2 H35 H40 or 06 and 10 2 There are 2 circuits Both reversing valves are active only if the heat pump is active H70 1 The reversing valve is off in Off and standby modes The valve is OFF in cooling and ON in heating modes In defrosting mode the valve is OFF see relevant paragraph ERT 400 User Manual 39 104 Se If the relay power outputs configured as reversing valve is an output ranging between NO2 and NOS the polarity of the valves can be reversed with parameters H41 H44 6 5 Anti freeze integrated
63. bypass time It sets a delay between activation of the cut off function and the compressor start up It is expressed in seconds Maximum speed in Cooling mode It sets a speed step in relation to a specific temperature pressure value in Cooling mode Maximum fan speed temperature pressure set point in Cooling mode Condensation temperature pressure value related to the speed of fan referred to in parameter F13 Minimum speed in Heating mode Minimum proportional regulation for the fan in Heating mode It is expressed as a percentage from 0 to 100 of the supply voltage Maximum silent speed in Heating mode Maximum proportional regulation for the fan in Heating mode It is expressed as a percentage from 0 to 100 of the supply voltage Minimum fan speed temperature pressure set point in Heating mode Condensation temperature pressure value above which the fan runs at minimum speed in Heating mode Proportional band in Heating mode Temperature pressure differential that corresponds to a variation from minimum silent to maximum silent of the fan speed in Heating mode F16 Maximum speed in Heating mode It sets a speed step in relation to a specific temperature pressure value in Heating mode Maximum fan speed temperature pressure set point in Heating mode Condensation temperature pressure value related to the speed of fan referred to in parameter F19 Pre ventilation in Cooling mode It sets a pre ventilation time in Cooling mode before the co
64. ced compressors can be configured with 2 compressors in the first circuit and 1 in the second This configuration is activated by setting H79 1 Number of compressors per circuit 2 compressors per circuit H06 2 NO1 Comp 1 circ 1 alarm index 1 Step2 Comp 2 circ 1 alarm index 2 Step3 Comp 1 circ 2 alarm index 3 of 2 H05 2 6 2 1 Compressor start shutdown sequence or power step Depending on the temperature conditions detected by the probes the temperature control functions on the ERT 400 device may require the activation or de activation of the compressors capacity steps of the power steps The sequence with which compressors capacity steps steps are activated de activated can be determined by using the corresponding H08 and H09 parameter values as explained below Parameter value Par Description 0 1 H08 Step start up sequence Depending on operating hours Fixed start up sequence H09 Circuit balancing Circuit saturation Circuit balancing A start sequence that varies according to the operating hours means that if 2 compressors are available the one with fewer operating hours is turned on first whereas the one with more operating hours is turned off first In a fixed start up sequence the first compressor to be turned on is the one with the lower index compressor 1 is turned on before compressor 2 whereas the first compressor to be turned off is the one with the hig
65. cessed panel Up to 2 of the above keyboards can be connected to the same unit as described in paragraph 6 5 ERT 400 can also be used without a keyboard and the parameters are checked by interfacing with a PC or are downloaded from a Copy Card The EKF EKW keyboards have an internal sensor that can be used instead of input A77 for temperature control If this is the case the following conditions must be complied with 1 H80 0 always regulation only on Al1 2 EKF H80 0 indifferent parameters are not accessible Jumper closed regulation on EKF probe e Jumper open regulation only on Al1 3 EKW 80 0 regulation on AIT 80 1 regulation on EKW probe 4 80 0 always regulation only on AI1 5 80 0 always regulation only on AI1 6 EKW EKF EKF jumper closed H80 indifferent regulation on EKF probe EKF jumper open H80 1 regulation on EKW probe EKF jumper open H80 0 regulation on AI1 base unit probe 5 1 EKF400 RT keyboard E ose E x P A m A MACHINE STATE D KNOB B OPERATING MODE E STATUS LED C DAMPER MODE The switch is used to set the unit to one of 4 possible states 1 0N 0 Standby ERT 400 User Manual 26 104 auto XXX Gao ds B auto ki eco Economy mode Night Purging The svvitch can be used to set the unit to one of 4 possible operating modes A Fan Cool Y
66. cold air Heating this is the winter operating mode in this mode the unit is configured to generate hot air Night this is the night time operating mode the unit controls air circulation during night hours Auto this is the automatic operating mode the unit automatically controls the heating or cooling state according to the values detected by the probes Stand by in this mode the unit does not perform temperature control functions and all the alarms remain active Off the unit is off Stand by mode can only be selected with the EKW400 RT S or EKP400RT keyboard Night and auto modes can only be selected with the EKF400 RT keyboard The operating mode varies according to the keyboard settings and the following Parameters Operating mode selection parameter H49 Presence of heat pump parameter H10 Heating mode disabling parameter H48 Heating cooling time parameter H72 Operating mode selection parameter H49 0 Selection from keyboard 1 Selection from digital input 2 Automatic selection of mode If H49 2 the mode setting is always automatic and cannot be set using a keyboard In auto mode set with a parameter H49 2 or keyboard there is a minimum holding time during which even if the regulator requests a change over this is not allowed The holding time can be set using parameter H72 The timer begins counting from when the last load shuts down because the temperature controller is satisfi
67. control condensation fans can be configured with 2 types of signals 0 Cutting phase fan control signal 1 4 20mA output Configuration of analogue output 2 AN2 or TC2 The output to control condensation fans can be configured with 2 types of signals 0 Cutting phase fan control signal 12 4 20mA output Activation of heating mode 07 the Heating mode is activated 12 the Heating mode is not activated with the selector on Heating the unit is in Standby Selection of operating mode 0 Selection from keyboard 17 Selection from digital input 2 Automatic selection Activation of dynamic set point If activated this function can be used to change the working set point automatically according to the outdoor temperature or analogue 4 20mA input This parameter is not relevant if H13 3 or H14 3 0 Function de activated 1 Function activated Maximum dynamic offset in Cooling mode This is the maximum value that is added to the set point configured in Cooling mode Coo when the DYNAMIC SET POINT function is activated Maximum dynamic offset in Heating mode This is the maximum value that is added to the set point configured in Heating mode when the DYNAMIC SET POINT function is activated Outdoor temperature set point in Cooling mode This parameter is only relevant if the dynamic set point function is activated and if probe AIA is configured as outdoor temperature probe Outdoor temperature set point in Heating mode This parameter is onl
68. during this period the fan will run at minimum speed If parameter F05 is set to 1 the condensation control is linked to the condensation temperature or pressure depending on how the following parameters are set CONDENSATION FAN CONTROL IN COOLING MODE F06 Minimum fan speed in COOLING mode F07 Maximum fan silent speed in COOLING mode F08 Minimum fan speed temperature pressure set point in COOLING mode F09 Proportional band Fan in COOLING mode F10 Fan cut off delta F11 Cut off hysteresis F13 Maximum fan speed in COOLING mode F14 Maximum fan speed temperature pressure set point in COOLING mode An example of interaction of these parameters is shown in the figure below Speed F13 F07 F06 OFF Temp Press Speed speed Temp temperature Press pressure If the Cooling mode is activated and F05 0 if the compressor is off the fan is also off to parameter F21 pre ventilation of external fan is also activated Before switching on the circuit compressors the fan is operated for a period of F21 Its ventilation speed is proportional to the condensation temperature However during this interval of time if the regulator requests cut off the fan returns to the minimum set speed This parameter prevents the compressor from starting at excessively high condensation speeds CONDENSATION FAN CONTROL IN HEATING MODE F15 Minimum fan speed in HEATING mode F16 Maximum
69. e the probe on the EKF remote keyboard if the DIP SWITCH on the EKF keyboard is closed e the probe on the EKW keyboard if the keyboard is connected H80 1 and the dip switch on EKF is open do not enable the probe on EKW if the EKP keyboard is installed If this is the case all the keyboards are periodically reset If the EKF remote keyboard is present the value set by the potentiometer is added to the regulation set point parameter 7 3 ERT 400 can be connected to 1 heating step 1 cooling step or 2 heating step and 2 cooling step type digital thermostats If this is the case the thermostat does not inform the ERT of the temperature probe reading but sends digital signals 1st cooling step request 2nd cooling step request 1st heating step request 2nd heating step request Digital regulation As a result ERT 400 activates the resources Digital regulation is active if e the parameter H78 1 digital regulation enabled some digital inputs are configured as heating cooling step request digital inputs H23 H33 02 N05 22 24 In heat pump operating the electric heaters are considered steps that are less important then compressors i e they are only activated once the available compressors capacity steps have been activated The hot water coil is not activated The tables below define the activation sequence of the resources according to the state of the digital inputs Example 2 compressors heat pump present reverse cycle
70. e below the maximum one If correctly dimensioned the fuse also protects the load Povver employed varying depending on model 500VV 1500VV 2200VV Type of control signal impulse modulation Protection class IP00 open card ERT 400 User Manual 97 104 CF modules mechanical assembly 69 max 500 Watt max 1 500 Watt max 2 200 Watt F2 A Power supply B Control signal 11 e CF REL a 777 59 0 Power cards are designed to be fitted on the rear of boards The dimensions of the card models are shown in the following layout 1140 ek E ne l ir prp e 50 85 0 90 0 Perform all operations on the connections when the unit is OFF All operations must be performed by qualified personnel only ERT 400 User Manual 98 104 Copy Card photo copy Card 16 1 3 Copy Card This device is used to upload and download the device parameter map A B gp A Copy Card viewed from below dimensions 4x2x1 3 cm B Copy Card and TTL cable length 30 cm C Copy Card viewed from 3 4 The following conventions are usually applicable UPLOAD means copying parameters from a unit to COPYCARD DOWNLOAD means copying the parameters from a COPY CARD to a unit 3 C 16
71. e inputs and outputs ERT 400 User Manual 19 104 Analogue inputs Analogue inputs configuration table A eS Digital inputs Digital inputs polarity 4 2 Configuration of analogue inputs There are 6 analogue inputs on the base unit 2 on the 405RH expansion module 3 NTC or Digital Inputs 2 NTC or 4 20ma Inputs 1 0 5v or digital Input 2 4 20mA or digital Inputs The inputs can be configured as in the following table Inlet air input No probe NTC input Multi functional digital Not permitted Anti freeze Temperature input control No probe NTC input condensation 4 20mA input condensation 4 20mA external circuit 1 circuit 1 environment humidity uu temperature input No probe Multi functional digital 0 5 V input 0 7 CO2 input input Filter differential pressure No probe NTC input condensation 4 20mA input condensation 4 20mA recirculated air circuit 2 Circuit 2 humidity input AI 7 No probe 4 20mA recirculated air Multi functional digital Not permitted exp humidity input input Al 8 N12 No probe 4 20mA external 4 20mA CO2 input Multi functional digital exp environment humidity input input The jumper on the expansion module must be installed The jumper on the expansion module must not be installed ALI parameters related to inputs configured as digital inputs If the inputs AI3 A16 AI7 or AI8 are defined as 4 20mA inputs the following parameters are also
72. e turned off and on again after the change is made in order to operate correctly ALARM PARAMETERS measurement 1401 Bypass time for low pressure pressure switch 255 Seconds 1402 Number of low pressure events per hour 0 25 Num A03 Pressure switch bypassfromfanstat 255 Seconds 1404 lnput activation time with active pressure switch J 255 Seconds 1405 Input activation time with pressure switch not active 255 Seconds 1406 Number of events per hour for pressure switch 0 255 1407 dCompressor thermal switch by pass activated by compressor 101 255 Seconds Number of events hour of thermal switches of compressors 1 and EMEN 2 A09 Number of fan thermal switch events per hour 255 Nm A10 Anti frost alarm from ON OFF bypass 0080170 255 Minutes A12 Anti freeze alarm hysteresis 00 255112 C 1413 Number of events per hour for anti freeze alarm 000100 25 Num 1414 Anti freeze alarm probe 0000000081 001073 Num A15 Activation of fan shut down with anti freeze alarm 0 1 Fag A16__ Fan status with fire alarm 0 23 Num 1417 Overtemperatuesetpont 0 25 C k 1418 Duration in over temperature 0 25 o A19 Deactivation of compressors with high temperature 0 1 Fag A20 Diriy fan oper
73. ed The heating mode is only enabled if the parameter H48 0 If not with the selector on Heating the unit is on Standby If the parameter H49 0 the mode set on this keyboard restricts the mode on the other keyboards The operating mode varies according to the keyboard settings and the following Parameters Configuration parameter for All H11 see Analogue inputs configuration table Configuration parameter for AI2 H12 see Analogue inputs configuration table Operating mode selection parameter H49 Presence of heat pump parameter H10 Operating mode selection parameter H49 0 Selection from keyboard 17 Selection from digital input see Digital Inputs Presence of heat pump parameter H10 0 Heat pump not present 0 Heat pump present The combination of parameters generates the following rules Mode selection AI1 parameter parameter parameter H49 H11 H12 The operating mode is selected using the Not 2 Not 2 keyboard The operating mode is selected using the digital Not 2 Not 2 input If input All is active the operating mode is 2 Not 2 ERT 400 User Manual 44 104 Operating mode configuration Al2 configuration Operating mode Mode selection AI1 configuration Al2 configuration parameter parameter parameter H49 H11 H12 heating otherwise it is stand by If input AI2 is active the operating mode is Any Not 2 2 Cooling otherwise it is stand b If input AIT is active the op
74. eecscsueseesueesesneees 34 6 2 1 Compressor start shutdown sequence or power step ssesceecsecseeseecsecseesesssccuccsecatensesuccuccnessccuecsecaesscsuccucessesuecsecuecaeessesuccuecsensecuecuecaeeasesuccueeneeateneesueet 35 6 2 2 Compressor titig saos est iR P TO ua tee du ete ane t tt admet dan ated 37 6 3 Condersation fanis a senos dentem mh een anii b ibd amen 38 6 3 1 LAM cR E a 38 6 3 2 Corifiguration of fan sea et Re e D e D ud ame amm pem q 38 6 3 3 Configuration of fan regulator eet e o HER EC ARA o HU e i te te P rti e tere tte 39 64 REVERSI ES Va VEE oc rere ORO RR REO R ROS e RORIS Red dO e CR eR e Sere asd es 39 6 5 Anti freeze integrated electric heaters oo eesssssssessesseesssseesecesuccsesnccsscncesecacssecaeesesssesecscsucssessecaecseeaseaeeaseseeceesueeeesneeseenees 40 6 5 1 Electric heaters in Defrosting m de i aus e e noie ele cet tete or e eter nd 40 6 5 2 Integrated electric heaters oue n ette EE Repetitio e teet R YR p ll 40 6 5 3 Electric heaters in dehumidification MOE essesssscsecseecsecsecseesccsecsecuccescssessecuccsscssecuecascssecsecsesuecuecsscseccuecuscuecssecsecuecsscseceuecuseueesucssecuecaseneesuecuecuecaneeseenects 40 6 5 4 Hot water coil in Dehumidification mode uu eeeeeseessesseessecseeseessecnecsecssenscssccusessessccuccuecuecasesscsuccuesusecuecuecasessesuccucsecasecuecuecaensesuceusesesauesuecuecuseaeesuccuecnee
75. epresents the waiting time at the end of the defrosting cycle between the shutdown of the compressors and the reversing of the 4 way valve Valve compressor waiting time at start of defrosting Activation of fan at end of Defrosting It activates the fans during phases d08 and d09 Defrosting interval It represents the interval between the end of a defrosting cycle and the next one not dependant on the circuit that has performed the defrosting operation Probe for end of defrosting circuit 1 Probe for end of defrosting circuit 2 These parameters can be assigned the values and meanings shown in the following table 75 Description parameters 0 End of defrosting on digital input 1 End of defrosting on AI3 2 End of defrosting on AIA 3 End of defrosting on Al6 Delayed start of compressors in defrosting mode This is the only safety limit observed by both the capacity steps and the compressors during the defrosting phases 9 1 9 Expansion module parameters ESP Polarity of ID12 1D13 ID14 ID15 As for H23 Configuration of ID12 As for H23 Configuration of ID13 As for H23 Configuration of ID14 As for H23 Configuration of ID15 As for H23 Configuration of relay 9 As for H23 Configuration of relay 10 As for H23 Configuration of relay 11 As for H23 Configuration of relay 12 As for H23 Configuration of relay 13 As for H23 Configuration of ST7 As for H23 Configuration of ST8 As for H23 Pol
76. erate independently and are regulated by the condensation pressure temperature and the status of the circuit compressors If F22 1 the outputs of the 2 fans are in parallel and regulation is effected on e the maximum value between the condensation probes of the circuits in Cooling mode e the minimum value between the condensation probes of the circuits in Cooling mode 7 6 4 Control of anti freeze electrical heaters ERT 400 can control 4 anti freeze electric heaters The electric heaters serve two purposes they prevent ice from forming in the exchangers and the environment and act as regulators If they are used to prevent the formation of ice all the electric heaters are activated at the same time They are switched off if an alarm that shuts down the evaporation fan is present Each electric heater has its own set point for the Heating and Cooling modes and can therefore be activated using the following parameters r07 electrical heater set point in Heating mode r08 electrical heater set point in Cooling mode The two anti freeze electrical heater set points fall between minimum and maximum values which the user may set using the following parameters ERT 400 User Manual 50 104 Diagram of the anti freeze integrated electric heaters Example with 4 electric heaters r05 4 r09 maximum set point of anti freeze electrical heaters r10 minimum set point of anti frost electrical heaters If the off st
77. erating mode is Any 2 2 heating if AI2 is active the operating mode is Cooling if All and AI2 are both active the operating mode signals an error if none of them are active the unit is in stand by 7 1 1 Auto operating mode In automatic mode the unit goes to heating mode if the AI1 temperature is lower than the heat set point minus the Regulation band for compressors in heating mode It goes to cool mode if the temperature is greater than the cool set point plus the Regulation band for compressors in cooling mode Setpoint heating Setpoint cooling A A Heating Cooling 7 1 2 Night purging operating mode This function can only be activated vvith the EKF400RT keyboard using the slide svvitch or the digital input on the back The function is enabled if the temperature probe H14 1 is present if not the unit goes into Standby mode e the temperature read by the external probe is greater than L24 12320 if L23 0 the unit goes directly into Standby mode If the conditions listed above are not present e the damper is opened to 10076 e evaporator fan is activated for a period set on L23 all other regulators are disabled There are three vvays of deactivating the function time out in this case at the end of the period L23 the unit goes into Standby mode e when the external temperature drops i e when the probe value Al4 124 the function is deactivated and the unit goes into Standby mode w
78. erature Determines the status of the compressors if high temperature alarm is activated 0 compressors on 1 compressors off Dirty fan operating hours threshold Determines the time measured in hours 100 after which the dirty filter alarm is generated Clogged fan operating hours threshold Determines the time measured in hours 100 after which the clogged filter alarm is generated Activate fan shut down with clogged filters Determines shut down of the fan if clogged filter fan is generated 0 fan on 1 fan off Filter differential pressure bypass time from fan start up Determines the delay between start up of fan and start up of alarm diagnostics Worn filters Dirty filters Evaporator fan shut down Shut down fan differential pressure set point ST5 value below which the shut down fan error is generated Dirty fan differential pressure set point Minimum value of ST5 A25 A26 range in which the dirty filter error is generated Worn fan differential pressure set point Maximum value of ST5 A25 A26 range in which the dirty filter error is generated If this value is exceeded the worn filter alarm is activated Duration of differential pressure activated by dirty or clogged fan alarm Determines the duration of the dirty or worn filter alarm Duration of differential pressure activated by shut down fan alarm Determines the duration of the shut down fan alarm Maximum temperature of outlet air Maximum value for values read by AI2
79. essor safety times except delay d74 are ignored 8 3 Dehumidification The function is activated in the following conditions cooling mode active number of active steps during dehumidification greater than 0 122 gt 0 e an ambient humidity probe is present Regulation is effected by activating a number of compressors steps as specified in parameter L22 when relative humidity exceeds set point L19 The hysteresis is equal to parameter 120 If the inside temperature is lower than the cooling set point L21 the function is not active Dehumidification is reactivated when the temperature goes above set point L21 2 ERT 400 User Manual 57 104 Freecooling Freeheating Refer to the follovving diagrams if there are 2 active steps during dehumidification COMPR DHSET L19 gt int humidity INT TEMP SET COOLING SET L21 2 SET L21 time INT HUMIDITY SET L 19 SET L19 L20 time COMPR time COMPR compressor DHSET dehumidification set point 1 time time INT HUMIDITY internal humidity SET COOLING cooling set point INT TEMP inside temperature 8 4 Humidification The humidifying function activates a humidifier by way of a relay output if the ambient humidity is too low The function is activated in the following conditions a relay is configured as humidifier output H35 H40 and N06 N10 10 an ambient humidity probe is present parameter L76 humidify s
80. essors are switched off and any energy saved by using colder outdoor air would be lost For this reason FREECOOLING SETPOINT COOLING SETPOINT 102 Please refer to the diagram below Damper Freecooling Setpoint Cooling Setpoint L02 A Outdoor temperature 100 LO7 Inside temperature Damper Damper Outdoor temperature Outdoor temperature Inside Temperature inside temperature OUTDOOR TEMPERATURE gt COOLING SETPOINT In these conditions the outdoor temperature cannot be used to cool the environment unless the indoor temperature is higher than the outdoor temperature if so the damper is completely open Outdoor air can however be used to heat the environment if the indoor temperature is below the cooling set point If this is the case the freeheating set point is the same as the cooling set point ERT 400 User Manual 59 104 Please refer to the diagram belovv Damper Freeheating Setpoint Cooling Setpoint Outdoor temperature 100 LO7 Inside temperature Damper Damper Outdoor temperature Outdoor temperature Inside Temperature inside temperature 8 5 2 Freecooling Freeheating in Heating mode For heating mode the same logics apply but the other way round when calculating the freecooling and freeheating set points OUTDOOR TEMPERATURE lt HEATING SETPOINT In these conditions the outdoor temperature cannot be used to heat the environment unless the indoor tempera
81. et point is greater than 0 no humidifier alarm is present The function has two different set points one for heating mode 116 and one for cooling mode 117 The hysteresis is the same for both modes L18 Please refer to the diagram belovv HSET L16 L17 H OUT internal humidity H OUT humidification relay output 1 HSET humidification set point INT HUMIDITY internal humidity 8 5 Economizer Mixing recirculated air with air from outside to heat or cool the environment can often be useful This practice is commonly referred to as freecooling and freeheating ERT 400 User Manual 58 104 Damper 799 F The external air enters the external environment through a damper that mixes it with the recirculated air from inside Damper control is proportional The function is only activated if free cooling is enabled 01 1 the All probe is configured as NTC inlet air analogue input H77 1 the Al4 probe is configured as NTC outdoor temperature analogue input H14 1 An analogue or digital output is used as damper control AN3 a 0 10Vdc dedicated output control is proportional HA relay power outputs is configured as damper control H35 40 15 or N06 N10 15 on expansion module outdoor temperature exceeds L08 109 freecooling freeheating block conditions If the outdoor temperature Al4 goes below the value set in L08 the economizer is disabled and the damper goes to minimum openi
82. eter A21 a clogged filter alarm is generated A21 must be greater than 0 for the alarm to be activated By setting A22 1 the clogged filters alarm blocks all the unit loads 10 2 Table of digital alarms Alarm Name Bypass activation event Bypass time Activation Deactivation Number of events time time per hour High pressure alarm 19500 1 Not present Not present Not present circuit Low pressure alarm Enabling of one A01 Not present Not present A02 compressor on the circuit or reversal of 4 way valve Pressure Fan activated A03 A04 A05 A06 switch evaporator fan thermal switch alarm Evaporator fan thermal Not present Not present Not present svvitch Thermal svvitch of Start up of one of the A07 Not present Not present A08 compressors 1 2 3 4 compressors Electric heaters 1 7 None Not present Not present Not present Manual reset Electric heaters 3 4 None Motpresent Not present Not present Manual reset Humidifier ERT 400 User Manual 87 104 10 3 Table of analogue alarms Alarm Name Event Bypass Activation Duration Hysteresis time SET POINT Anti freeze alarm On Off input in A10 All N A A12 positive Heating mode remote on off A12 negative High None Not present temperature alarm on regulation system Dirty filters N A Clogged filters N A N A Number of Control probe events per hour A13 If A14 alarm not active If A74 1 probe Al
83. ets a value that corresponds to a current of 4mA Humidity bottom scale value Maximum humidity value sets a value that corresponds to a current of 20mA Configuration of digital input ID1 0 Disabled input 1 Differential pressure switch evaporator fan thermal switch 2 remote OFF 3 Remote Heat Cool 4 Thermal switch compressor 1 5 Thermal switch compressor 2 6 Thermal switch compressor 3 7 Thermal switch compressor 4 8 Thermal switch of fan circuit 1 9 Thermal switch of fan circuit 2 10 High pressure circuit 1 11 High pressure circuit 2 12 Low pressure circuit 1 13 Low pressure circuit 2 14 End of defrosting circuit 1 15 End of defrosting circuit 2 16 Window input 17 Smoke 18 Damper open 19 Humidifier alarm 20 Thermal switch of electric heaters 1 and 2 21 Thermal switch of electric heaters 3 and 4 22 Request 1 cooling step 23 Request 1 heating step 24 Request 2 steps 25 Thermal switch of evaporator fan Configuration of digital input ID2 As for H23 Configuration of digital input ID3 As for H23 Configuration of digital input ID4 As for H23 Configuration of digital input ID5 As for H23 Configuration of digital input ID6 As for H23 Configuration of digital input ID7 As for H23 Configuration of digital input ID8 As for H23 Configuration of digital input ID9 As for H23 Configuration of digital input ID10 As for H23 Configuration of digital input ID11 As for H23 Differential pressure bottom
84. f EKP 400 keyboard 8 Dimensions of EKW 400 keyboard 8 Dimensions of expansion module Dimensions of expansion module EXP 405 8 QULLAR Vv 90 LUSDLOM iei eei eie eie eges 27 B I f 27 Dynamic set poit reete rta on tetto eene 45 Dynamic set point Modification based on outdoor temperature with negative offset 45 Dynamic set point Modification based on outdoor temperature with positive offset 45 Dynamic set point Regulation parameters 45 E zs 0 A Economy operating mode EKF400 RT Digital Inputs eee EKF400 RT keyboard EKPAD RT keyboard serm EKW 400 keyboard connections 400 5 keyboarq Electric heaters in Defrosting mode Electric heaters in dehumidification mode 38 Electromechanical data een 87 EMC e m 97 End af uscite tatc 54 End of Defrosting Configuration parameters 55 End of Defrosting Defrosting end sequence 55 000 91 Evaporator Taco eere iie e i eise 40 ig V P 7 Exp 402 expansion m
85. f alarms 2 eaaet Tt e ERE RE e c E b d e P E p ce ve es 78 10 2 Table of digital alarms er tette Atte nie e o iege eerie e e eret AD eleg aS 87 10 33 Trable of analogue alarms eh d eet te eee deci tei e E E LEER ARE DRE AENEA 88 11L Technical vbt ar 89 VET Technical dataz onere onere aee t Perte i eee tee ete d ete Pe de rea a eine 89 11 2 Electromechanical data ee dn Ree ede tecti re rise deed tte oed ve de d ee iei 89 11 3 5 12 Use of the device 121 Permitted USC ss rore ertt oed tede edere di ee le 12 2 EOrbidden use ui deae b E RR d pte dd d Hoe RR Le tea prep 13 Responsibility and Residual 15 5 6 62 91 m d ral en ee E oA x DL 92 15 OSS ANY asd n adiecit o R 93 16 Components and Accessories oisi R adi 95 16 1 Accessories 16 1 1 Keyboards 16 1 2 a X Cn D L RAR ARAYA RAR AA AN ANEREN si 16 1 3 COPY CII 99 16 2 drole P das 99 16 2 1 NAC FU eas HQ 99 102 TZ Analiticsltdes a ee edet b m l le Rab 1 HOW TO USE THIS MANUAL This manual i
86. fan runs at maximum speed after start up This is expressed in tenths of seconds Fan phase shift This parameter calibrates the fan control output according to the different types of fans adjusting the current voltage phase shift of each fan It is measured in microseconds 200 Duration of triac activation impulse It changes the length of the triac command impulse Operation on compressor request 07 If the compressor and fan are off 12 The condensation control operates independently of the compressor Minimum speed in Cooling mode Minimum proportional regulation for the fan in Cooling mode It is expressed as a percentage from 0 to 100 of the supply voltage Maximum silent speed in Heating mode Maximum proportional regulation for the fan in Heating mode It is expressed as a percentage from 0 to 1007 of the supply voltage Minimum fan speed temperature pressure set point in Cooling mode Condensation temperature pressure value below which the fan runs at minimum speed in Cooling mode Proportional band in Cooling mode Difference in temperature pressure that corresponds to a variation from minimum silent to maximum silent of the fan speed in Cooling mode F07 Fan cut off differential Condensation temperature pressure differential as compared to the temperature pressure set point F08 or F14 above which the fan is turned off Hysteresis cut off Condensation temperature pressure differential for the cut off feature Cut off
87. fan speed in Heating mode Pre ventilation in Cooling mode Separate or single ventilation F23 Fan activation temperature pressure set point in Defrosting mode Fan activation hysteresis in Defrosting mode in 0 ojo ojojojo en o Seconds 10 microseconds ELE dM 1 Fag 100 800 C 10 Kpa 10 C 10 Kpa 10 1 Fe C 10 Kpa 10 C 10 Kpa 10 PUMP EVAPORATOR FAN PARAMETERS measurement P01 HotwaterpumpONfanONdelay 255 Seconds 10 P02 Fan ON compressors ON delay 255 Seconds jP03 Unit OFF fan OFF delay o Z 11 10 255 Seconds aAciivation of fan shut down in Defrosting mode 0 1 ELECTRIC HEATERS HOT WATER COIL PARAMETERS Par Description Min Max Unit of measurement Configuration of electric heaters in Defrosting mode 0 1 Ha Configuration of anti freeze electric heaters activated in Cooling UN AN mode Configuration of electric heaters activated in Heating mode 0 1 Fig Configuration of control probe for antifreeze electric heaters 0 3 Nm 4 Nm r06 Configuration of electric heaters in OFF and Stand by mde 0 1 Flag r11 T Anti freeze electric heater hysteresis 255 C 12 Activation of heat pump shut dovn lag ERT 400 User Manual 75 104 Table of Defrosting Parameters Table of Expansio
88. frosting probes Separate or single condensation Pump fan delay at start up Q Water pump Water pump 6 6 Condensation Defrosting probes ERT 400 can control the defrosting of one or two circuits depending on plant configuration Defrosting is activated if it has been stated by parameter Enable defrosting 401 1 e the condensation probe of the first circuit is present and connected to analogue input AI3 with parameter set as H13 1 NTC probe or H13 2 4 20mA probe and Al4 1 a reversing valve is present For plants with 2 circuits defrosting can be carried out separately or together on plants with one condenser depending on parameter F22 type of condensation F22 0 separate F22 1 single The defrosting input and output changes according to the condensation probe values which can be configured as follows 1 circuit 2 circuits 2 circuits separate defrosting single defrosting Defrosting circuit 1 MIN AI3 AI6 Defrosting circuit 2 Al6 MIN AI3 AI6 9 If A and B are control probes MIN A B stands for the minimum value between A and B if A and B are present Value A is taken if B is not present A must always be declared present 6 7 Hot water coil The hot water coil unit consists of a 0 10Vdc modulating output and a water circulation pump The analogue output is active if parameter H47 2 the integrated pum
89. g a tool only The device is suitable for incorporation in a household appliance and or similar air conditioning device According to the reference regulations it is classified In terms of construction as an automatic electronic control device to be incorporated with independent assembly or integrated n terms of automatic operating features as a type 1 action control device with reference to manufacturing tolerances and drifts class 2 device in relation to protection against electrical shock As a class A device in relation to softvvare structure and class 12 2 Forbidden use Any use other than the permitted use is forbidden Please note that relay contacts supplied are functional and are subject to fault in that they are controlled by an electronic component and be shorted or remain open protection devices recommended by product standards or suggested by common sense in response to evident safety requirements shall be implemented outside of the instrument ERT 400 User Manual 90 104 13 RESPONSIBILITY AND RESIDUAL RISKS Eliwell amp Controlli srl shall not be held liable for any damage incurred as a result of installation use other than those intended and in particular failure to comply with the safety instructions specified by applicable regulations and or provided in this document use with equipment which does not provide adequate protection against electric shocks water and dust under the effective c
90. he alarm so that it can emit new signals A manually resettable alarm can only be reset using the keyboard Scrolling down a menu means viewing all the parameters from top to bottom 10 gt 09 gt 08 This term generally refers to LEDs The average is calculated as the ratio between the total hours of compressors available and the number of compressors on the circuit These identify the various devices in a plant such as compressors fans hydraulic pump and anti freeze electric heaters This represents the reference value that can be set by the user that defines the operating status of the plant A typical example is the thermostat that regulates the temperature in our homes to maintain a temperature of 20 C we must set a set point of 20 C the heating system will start if the ambient temperature measured is below 20 C and will be turned off otherwise This represents a set of values i e Range 1 100 includes all the values between 1 and 100 Hysteresis is generally defined in connection with a set point to avoid frequent oscillations in the status of the controlled load Example let s define a set point of 20 C on a probe that detects ambient temperature so that the compressor starts every time the limit value is exceeded When ambient temperature reaches values that are close to the set point 20 C a phase of instability occurs during which the relay which starts the compressor frequently changes its status from
91. her index The circuit balancing parameter is only significant if there are 2 circuits and 2 steps per circuit If HO9 0 is selected all the power steps on one circuit are turned on followed by those of the other circuit When 09 1 balancing the power steps are turned on so that both circuits supply the same amount of power or that the maximum difference is equivalent to one step The different combinations are described in detail below ERT 400 User Manual 35 104 Compressors start up based on operating hours and saturation of circuits Compressors start up based on operating hours and balancing of circuits Compressors fixed start up sequence and saturation of circuits H08 0 H09 0 EXAMPLE 1 COMPRESSOR WITH ONE CAPACITY STEP PER CIRCUIT EXAMPLE 2 COMPRESSORS PER CIRCUIT The first compressor to be turned on is the one with the lowest number of operating hours followed by the capacity step linked to the circuit the compressor of the other circuit and finally the capacity step of this circuit The first item to be shut down is the compressor capacity step with the highest number of operating hours followed by the related compressor the capacity step of the other compressor and finally the last compressor Example Let s imagine that the system is configured as follows NO1 Compressor 1 circuit 1 Step2 Capacity step of compressor 1 Step3 Compressor 3 circuit 2 Step4 Capacity step of compre
92. identical but the UP and DOVVN buttons value increase and decrease are separated by MODE and ON OFF buttons The temperature sensor is alvvays present on this keyboard 5 4 Programming of parameters Menu levels Unit parameters can be changed using a Personal Computer vvith special softvvare interface module and suitable cables or a keyboard If a keyboard is used the parameters can be accessed through a hierarchy of levels by simultaneously pressing the Mode and On off buttons as described above Each menu level is identified by a mnemonic code on the display ERT 400 User Manual 30 104 vOL LE enue 4SN 007 143 310 4 0 edwod 310 yH0 1H0 940sseJduioo 210 810 10 O1ueureorzunj 210 SSd piomssed 77 01 apu 244 Buiooo99J oJeuie Jed Lou ojjeureged eoipu dS3 euoisuedse ojjeure ed m OP apu 44p o1ueureuugs oJjeureJe d 7101 eoipuj 044 ojeBrjue oOWeIeY LOd aipu edwod ojeurejeg L04 Oljewesed apu Uy ouoize nuaA 00 olpul euoizejofaiJ ojjeure jeg 7102 ojeurered Ipu 42 eJ0sse1duioo oJjeure eq y ojeurejed eoipu TV twee onowesey LOH 0Jeurered eoipu 442 euoizeinDijuoo o1eureJeg yd ueurereg ejeyfip osseifui oyels LLI LO ss lSul e21poo p ijeub
93. if The temperature pressure rises above the value set for parameter 402 e The compressor is off e The timer is reset if e the defrosting cycle has ended e the ERT 400 has been shut down the operating mode has changed see operating modes the temperature rises above the value set for parameter 404 end of defrosting temperature pressure ERT 400 User Manual 55 104 Defrosting control of compressors 7 Defrosting start sequence Compressors Reversing valve Condensation fans Evaporation fans During defrosting all compressors are controlled as follovvs single defrosting all compressors are turned on at full povver separate defrosting all compressors in the circuit are turned on at full povver at start up a time of d14 is observed During the defrosting phases the safety intervals of compressors and capacity steps are bypassed and only parameter d77 is taken into account delay between defrosting of circuits This delay is valid both for activation of the compressors and capacity steps Defrosting can only occur if the following conditions are present e The safety timers of the circuit compressors must be set to After the last defrosting the delay between the defrosting operations of circuits must have elapsed 477 If the unit has 2 circuits and single defrosting the following conditions must be present e thecircuit that is not the one requesting the start of defrosting m
94. igured as digital input the electric heaters are turned off 6 5 1 Electric heaters in Defrosting mode The r01 parameter can be used to decide whether to activate the electric heaters during defrosting All the electrical heaters will be activated in parallel r01 configuration of electrical heaters hot water coil in defrosting 0 On only when requested by the antifreeze integrated regulators 1 always on 6 5 2 Integrated electric heaters If r15 1 the electric heaters act as both antifreeze and integrated electrical heaters The paragraph on Integrated Electric heater Controller describes how they operate 6 5 3 Electric heaters in dehumidification mode ERT 400 can control the electric heaters in dehumidification mode In this case the function is enabled with parameter r16 The control set point is the cooling set point See the diagram below ERT 400 User Manual 40 104 Electric heter EH EH 4 EH EH2 EH 1 SET POINT COOLING Temp EHx electric heater x TEMP Al1 All probe temperature 6 5 4 Hot water coil in Dehumidification mode The hot water valve is enabled in dehumidification mode with r16 1 The control set point is the cooling set point Analog output 0 Water pump ON OFF See the diagram below Set point cooling Analog output Analogue output TEMP Al1 All probe temperature ERT 400 User Manual 41 104 De
95. ip issejbu 003 IME 891909 Arg iuuelly oolBoyeue osseiDui eJo eA 90177 101 ossoJDui olpo2 di oiBojeue isseJfu Buneau jes eJo eA V3H Duneeu jes eqe1 Buijooo 195 AOLA 002 Dui ooo 195 l qe 135 Julod jas voie ole Z oJen OJAT ueJdeip SUIMO O JU U UMOUS se p INPNAS si 3 OAHE uolzelo l 0 olea 934nj onajs nu lv vOL ZE enue N 1SN 007 143 5 4 1 Visibility of parameters and submenus By using a PC an interface key Copy card suitable cables and the Param Manager softvvare you can prevent specific parameters and entire submenus from being displayed or changed Each parameter can be associated to a visibility value as described below Label 0003 The parameter or label is always visible 0258 The parameter or label is visible if the user password has been entered correctly password H69 0770 The parameter or label is visible if the user password has been entered correctly password H69 The parameter cannot be changed 0768 The parameter can be only displayed using a PC Visibility of some parameters or labels is already preset For further information see the instructions related to Param Manager ERT 400 User Manual 33 104 Povver steps Compressors vvithout capacity steps 6 SYSTEM CONFIGURATION This chapter explains how to configure the
96. ith a function change ECO ON OFF If the unit goes into Standby mode it remains in this mode until the condition that activated the function disappears the digital input is opened or the slide switch moved 7 1 3 Economy operating mode The economy function can be activated with the EKF400 RT keyboard using the slide switch or the digital input on the back If the function is activated e the 25 value is added to the cooling set point the 25 value is subtracted from the heating set point The function is active until the condition that activated it disappears the digital input is opened or the slide switch moved 7 1 4 Fan operating mode This function can only be activated with the EKF400 RT keyboard using the slide switch or the digital input on the back If the function is activated the evaporator fan is switched on the only active regulator is the economizer if it is parameter enabled see section on economizer The unit vvill stay in FAN mode until the condition that activated the function disappears the slide svvitch is moved to heat cool or auto or the digital input is closed 7 2 Control probe The temperature controller calculates the load to be supplied through the compressors for both Heating and Cooling modes ERT 400 User Manual 45 104 b Se Digital regulation user activation Set points The control probe is probe ST1 connected to the base unit if H80 0 regulation on EKVV enabled
97. l If A14 2 probe Al2 If A14 3 probe Al4 Automatic All reset Manual reset Al5 Manual reset Al5 Manual reset Al5 ERT 400 User Manual 88 104 Transformer 11 TECHNICAL FEATURES 11 1 Technical data z1 v pyl Mi Max Front IP Ambient storage humidity non condensing 11 2 Electromechanical data 110 230 V digital outputs 8 relays 5 A resistive 4 hp 230V 1 8 hp 125V The total current on the relays should not exceed 10 2 relays 5 A resistive 4 hp 230V 1 8 hp 125V normally open exp type 1 2 relays 5A resistive normally open Shared exp type 2 3 change over relays 8 A resistive exp type 2 Analogue outputs 2 energizing triac or 4 20 mA configurable outputs 1 0 10Vdc output 2 12Vdc power supplies min current 46 mA exp type 2 2 5 Vdc power supplies min current 10mA exp type 2 Analogue inputs n 4 NTC R s 10KO reading range 30 C 90 C 2 configurable inputs 4 20mA NTC R 10KO reading range 30 C 90 C 2 4 20mA or NTC Ros 10KQ hardware configurable inputs jumpers exp type 2 Digital inputs 11 voltage free digital inputs 4 voltage free digital inputs expansion modules Terminals and connectors 1 10 way connector high voltage step 7 5 2 16 way snap on connectors low voltage step 4 2 AWG 16 28 1 5 way connector step 2 5 remote control and copy card AWG 24 30 1 20 way connector for expansion connection 1 3 way screw termina
98. l freecooling Although outputs AN1 and AN2 have separate connections they can be used instead of TC1 and TC2 and are selected by means of parameters H46 and H47 Value PWM output circuit 1 0 10Vdc output fan 1 Not permitted PWM output circuit 2 0 10Vdc output fan 2 0 10Vdc output hot water valve ERT 400 User Manual 23 104 4 6 Remote keyboard output The base unit has an asynchronous serial output that enables it to be connected to the remote keyboard 12 Vdc 2400 baud parity EVEN 8 data bits 1 stop bit Please refer to the connection diagram belovv REMOTE KEYBOARD PANEL EKF400 RT REMOTE KEYBOARD WALL EKVV400 RT S EKP400 RT CONNA CONN B e s e Ee Ee E Es 112 Ee e Fe Ee GIGI Nee IIe ellie Ieee A B 4 7 Serial output The base unit has an asynchronous serial output that enables it to be connected to a Personal Computer or Copy Card For connection to a PC a special interface module RS232 TTL is necessary A PC or Copy Card is connected by a 5 way TTL cable 30 cm as shown in the diagram below RS232 TTL p converter A Copy Card device E Connection by TTL cable B interface module RS232 TTL C serial output D base module ERT 400 User Manual 24 104 Units of measurement selection 4 7 1 Copy Card device Data is downloaded and uploaded as follows UPLOAD data copied from UNIT to COPY CARD Programming parameters
99. l for remote keyboard 1 5 way connector digital inputs step 5 exp type 1 1 4 way connector step 7 5 relay output exp type 1 1 20 way connector with base unit exp type 1 1 12 way connector high voltage pitch 5 exp type 2 1 flat cable welded to 20 way PCB for connection to base unit exp type 2 1 13 way screw terminal for low voltage contacts exp type 2 Serial connections 1 serial connection 9600 1 serial connection 2400 remote keyboard output The unit must be powered by an adequate transformer with the following characteristics Primary voltage 230V 10 110V 10 Secondary voltage 12V Supply frequency 50Hz 60Hz Power 11VA 11 3 Standards The unit complies with the following European Union Directives EU Directive 73 23 EEC and subsequent amendments EU Directive 89 336 EEC and subsequent amendments and is compliant with the following harmonized standards LOW VOLTAGE EN60335 where applicable EMISSIONS EN50081 1 EN55022 IMMUNITY EN50082 1 IEC 1000 4 2 3 4 5 ERT 400 User Manual 89 104 12 USE OF THE DEVICE 12 1 Permitted use This product is used to control roof top controllers To ensure safety the controller must be installed and operated in accordance vvith the instructions supplied and access to high voltage components must be prevented under regular operating conditions The device shall be properly protected against vvater and dust and shall be accessible by usin
100. mpressor starts up Separate or single ventilation Parameter F22 can be used to configure the units with 2 circuits and a single condenser ERT 400 User Manual 69 104 F23 F24 P01 P02 P03 P04 r01 r02 r03 r04 r05 r06 r07 r08 r09 r10 r11 r12 r13 r14 r15 r16 r17 r18 Parameter F22 type of condensation 07 Separate condensers 12 Single condenser If F22 7 0 the two fans are independent and vary according to the condensation pressures temperatures and the status of the compressors If F22 1 the outputs of the 2 fans are in parallel and regulation is effected using the maximum value between the condensation probes of the circuits in Cooling mode the minimum value between the condensation probes of the circuits in Cooling mode If one of the 2 circuits has no condensation probe a configuration alarm is generated Fan activation temperature pressure set point in Defrosting mode If the temperature pressure measured during the defrosting cycle exceeds the Start fans in Defrosting mode threshold F23 fans are activated at full power Hysteresis of fan activation in Defrosting mode Condensation temperature pressure differential for regulation of the fan in Defrosting mode 9 1 6 Pump evaporator fan parameters PUP pump ON compressor ON delay It sets a delay between the start up of the pump and the compressor It is expressed in tenths of seconds Fan ON compressor
101. n Module Parameters Table of Freecooling humidity parameters r eat pump shut dovvn set point r13 Heat pump shut d poi r14 Heat pump shut dovvn hysteresis 25 5 C r15 Enable integrated electric heaters in heating mode 1 Flag 8 Fa Hot water pump deactivation hysteresis r18 Minimum activation time of hot water pump 255 Seconds 10 r19 Activate hot water coil in anti freeze mode 0 1 DEFROSTING PARAMETERS Par Description Min Max Unit of measurement Activation of defrosting d03 Defrosting intervat 0000000088 0818 255 Minutes 405 Maximum defrosting ime 255 Minutes d06 Compressor valve waiting time at startofdefrosting 255 Seconds d07 Valve compressor waiting time at start of defrosting 255 Seconds d08 Compressor valve waiting time at start of defrosting 255 Seconds 1409 Valve compressor waiting time at start of defrosting 255 Seconds d10 Activation of fan at end ofDefrosting 0 1 Ha d11 between circuit defrosting 255 Minutes di2 Probe for end of defrosting circuit 0 2 Nm d13 Probe for end of defrosting circuit2 _ 0 2 Nm di4 Delayed start of compressors in defrosting mode 255 Seconds EXPANSION MODULE PARAMETERS Description Min Max Unit of Treaste
102. n error z ERT 400 User Manual 34 104 Compressors vvith 1 capacity step Compressors vvith 2 or 3 capacity steps Unbalanced circuits Compressors vvith 1 capacity step H07 1 can be configured as follovvs Number of compressors per circuit 1 H06 1 2 H06 2 NO1 Comp 1 circ 1 alarm index 1 1 05 1 NO1 Comp 1 circ 1 alarm index 1 Step2 Capacity step 1 comp 1 circ 1 E Step2 Capacity step 1 comp 1 circ 1 Step3 Comp 2 circ 1 alarm index 2 Step4 Capacity step 1 comp 2 circ 1 o 5 NO1 Comp 1 circ 1 alarm index 1 E 2 H 5z2 Step2 Capacity step 1 comp 1 circ 1 Configuration error z Step3 Comp 1 circ 2 alarm index 3 8 Step4 Capacity step 1 comp 3 circ 2 Compressors with 2 or 3 capacity steps H07 2 or 07 3 can be configured as follows Number of compressors per circuit 2 capacity steps per compressor 3 capacity steps per compressor 1 06 1 and H07 2 2 H06 2 and H07 3 NO1 Comp 1 circ 1 alarm index 1 2 NO1 Comp 1 circ 1 alarm index 1 2 Step2 Capacity step 1 comp 1 circ 1 B 1 H05z1 Step2 Capacity step 1 comp 1 circ 1 Step3 rsen 2 7 lire 5 Step4 Capacity step 2 comp 1 circ 1 B 0 Step4 Capacity step 3 comp 1 circ 1 E o 2 E 2 H05 2 Configuration error Configuration error z If 2 circuits and 2 compressors are set per circuit a special combination of unbalan
103. ned for medium sized roof top units air handling units close controls packaged units water air and air air chillers 2 1 Main characteristics Management of 1 2 3 4 compressors Management of 1 2 3 capacity steps per compressor Management of 1 2 circuits Cold heat pump Configurability Up to 13 configurable relays 15 configurable digital inputs 0 10 V analogue outputs I O configurability Up to 8 Analogue Inputs configurable as 3NTC or Digital Inputs 2NTC or 4 20 mA Inputs 10 5Vor Digital Input 24 20 mA or Digital Inputs Available functions Operating mode cool heat fan Automatic change over based on temperature of inlet air Dynamic set point Thermodynamic optimization of circuits Temperature control Heat pump Control of reversing valve Control of defrosting Control of condensation Control of ventilation Control of electric heaters Control of humidification dehumidification Temperature Enthalpy Control of air pollution CO2 Proportional control of hot water coil NIGHT function Economy function ECO ERT 400 User Manual 6 104 2 2 Components and models Energy 400 RT consists of a base module with resources that can be extended using special expansion modules It is controlled by using special keyboards connected to it Expansion 1 LE a 13 Keyb EKF400 RT Base Expansion 2 Keyb EKP400 RT Keyb EKVV400 RT 5 Comp
104. ng L07 when the temperature goes above 108 109 the function is reactivated and damper opening is controlled by the economizer once more Opening and closing of the damper depends on the parameters that have been set as shown in the following sub sections The freecooling set point and freeheating set point variables are mutually exclusive in that the damper controller either regulates the freecooling set point or the freeheating set point and both are never used at the same time If the damper is controlled by relays it is disabled if the proportional output of the economizer is less or equal to parameter L07 and is activated if the proportional output is at 100 maximum opening The damper is switched OFF if alarms that determine its closure are active 8 5 1 Freecooling Freeheating in Cooling mode 2 cases may arise OUTDOOR TEMPERATURE COOLING SETPOINT The freecooling set point is calculated by subtracting the value in parameter L02 from the cooling set point freecooling offset in cooling mode In line with the freecooling value the damper is positioned at minimum opening 107 If the indoor temperature falls below the freecooling set point and below the outdoor temperature value the damper is fully opened to heat the environment and the indoor temperature is brought close to the cooling set point If the freecooling set point were to coincide with the cooling set point the damper would close as the same time as the compr
105. nger lengths may be used depending on the electromagnetic disturbance in the environment Front protection only applies to the EKP keyboard ERT 400 User Manual 96 104 CF modules technical specifications CF modules connections 16 1 2 CF Modules CF series units are optional modules that can be connected to main control modules in order to allow the fans to be adjusted with currents ranging from 2 A to 10 A These modules can be supplied as open cards and in several models CF REL for ordinary ON OFF commands CF 05 for cutting phase commands up to maximum powers of 500 W CF 15 for cutting phase commands up to maximum powers of 1 500 W CF 22 for cutting phase commands up to maximum powers of 2 200 W Supply voltage 230V Type of current on load CF 05 500 W max CF 15 1500 W max CF 22 2200 W max Maximum absorption current CF 05 2 5 A max current at 230 V CF 15 8 A max current at 230 V CF 22 12 A max current at 230 V Values and types of fuses CF 05 5x20 2 5 A lagged CF 15 5x20 8 A lagged CF 22 5x20 12 A lagged The ratings for the fuse refer to the maximum load this is the fuse supplied as standard This fuse has been specifically designed to protect the power components of the fan module A fuse with a higher capacity should never be used The value of the fuse must always be dimensioned in function of the fan and of the load being controlled though the value must always b
106. nit It is therefore necessary to adopt special measures to convey electrostatic currents to the ground ERT 400 User Manual 100 104 17 ANALTIC INDEX A ACCOSSORGS i s s n s s dubie 93 FAL 60 Alarm Parameters ALL s eet 65 PURI TODE saeva itd A REA 84 P Dg 76 Analogue pits enero etti 18 Analogue inputs configuration table 18 Anti freeze boiler parameters FRO 68 Anti freeze integrated electric heaters 38 Anti freeze integrated electric heaters Configuration 38 Anti freeze integrated electric heaters Configuration of electric heater 38 58 66 abla 42 Auto operating magie aee tester 43 Available TUnmcHens u usted 4 MH 91 B BUNE E 91 HOD 26 C RE IS D CF modules connections CF modules mechanical assembly 96 CF modules technical specifications 95 g z BVEI iiu irte tries 91 Coll drainage Ume R 55 COMPONENTS AND ACCESSORIES APPENDIX 93 Components and Models eee 5 Compressor parameters CP 66 Compressor start shutdown sequence or power S B 33 Compressor THIN
107. nsion module type 1 A Screvv connectors 1 Shared Digital Input 2 5 Digital inputs 12 15 B Connection to base module C Relay outputs not powered 11 relay 9 configurable 13 relay 10 configurable 12 14 shared C rH o o o o o o o o o o rH Exp 405 RH expansion module type 2 A Screw connectors 1 common for 1012 1015 2 5 Digital inputs ID12 1D15 6 7 AI7 if configured as digital input 6 8 AI7 if configured as 4 20mA input 10 11 Al8 if configured as digital input 10 12 Al8 if configured as 4 20mA input B Connection to base module C Relay outputs not powered 15 relay 9 configurable 16 relay 10 configurable 17 common relays 15 16 18 19 20 relay 11 SPDT configurable 21 22 23 relay 12 SPDT configurable 24 25 26 relay 13 SPDT configurable D Jumper function if Jumper J1 inserted input AI7 4 20mA ERT 400 User Manual 18 104 if Jumper J1 not inserted Al7 Digital input if Jumper inserted input AI8 4 20mA if Jumper J2 not inserted Al8 Digital input Single point double terminal The previous diagrams refer to cards with molex connectors The pin configuration is the same for plug in connectors Phoenix the only difference being that the first row of terminals is situated in the front part of the connector The devices are configured according to the values of the parameters associated with th
108. ntalpy inside enthalpy 8 6 Air Pollution This function controls the opening of the damper on the economizer according to the quantity of CO2 carbon dioxide in the air The position of the damper will be determined by the maximum value required by the air pollution function and the value required by the economizer The function supports 2 types of sensor the first with 4 20mA output to be connected to the AI8 input e the second with a 0 5 Vdc output to be connected to the Al5 input The function is activated in the following conditions the economizer is enabled the air pollution function is enabled i e the Al8 probe 4 20mA is configured as CO2 input N72 1 or the Al5 probe 0 5 Vdc is set as CO2 input H15 3 Please refer to the diagram below ERT 400 User Manual 62 104 ui 10096 LO a 0 b CO2 0 L26 100 OPEN Damper opening 3 CO2 Carbon dioxide 76 8 7 Loss of voltage If there is a loss of voltage the control returns to the state prior to the loss of voltage If defrosting is underway the procedure is cancelled All timing in progress is cancelled and restarted 8 8 Heat pump shut down This function shuts down the heat pump if the outdoor temperature is below r13 The pump is reactivated when the outdoor temperature rises above r13 r14 The function is active if r72 1 activation of heat pump
109. ntensesiees 41 6 6 Condensation Defrosting Probes cessesssscecsesseneesecceessccecsecsessecsecsscsecnsesecneeseecsecsecsecuecssesecseeseneesucnecsuessesueceecsecuecsecseceeens 6 7 Hotvyater Coll un iet ete i e ARR RE Nec E WERT a ERWIN a RR 6 8 4Evaporator fall d esee ntt eR dg cis 6 9 Damper opening digital input end EEE EEEE S tenth tete en tente tenente tenente tenente tenen tete nen tete nente E teni 7 Temperature Control Functions 7 1 1 Auto operating mode 7 1 2 Night purging operating mode 5 re t rere nU een ae en eee epe e pe ee lina Hee 45 7 1 3 Economy operating friode eet ertet beet lc he itd cn ARAR R SRAR ARAL tete des be 45 74 4 Faroperating mode cedet le qus ute te Hte ee ete tete tete tte detti e 45 71 2 Control probe Re RUE He Ree eee ete Ide Ree dec e ee eed ce e ee DARA ns 45 43 Digitalereg lablOEi wis ane coe antea Redit ded aiv ten Med add tvade e vna a SR 46 7 4 Configuring the set points s ee eter tre etit et Ag eno ede 46 45 Dynamic set polnt uide ater e Ue RU ER URN E eR ee a e e eet eet eee e pee e ETE 47 7 6 ad control aa M AAA 47 7 6 1 Control of compressors temperature 2222 47 7 6 2 Condensation FAM CONT OL
110. odule connections type 1 16 Exp 405RH expansion module connections type 2 16 Expansion module parameters ESP 69 F Fan control in Cooling mode diagram 47 Fan control in Heating mode diagram 48 Fan ON compressors ON delay Fan on high voltage outputs Fan on low voltage outputs Fan Operating Fan operating mode Forbidden use PRECIO deer Freecooling Humidity parameters FrC 70 Freecooling Freeheating in Cooling mode 57 Freecooling Freeheating in Enthalpy 59 Freecooling Freeheating in Heating mode 58 RS M 56 FUNENO Lee eise en 53 G GLOSSARY cse d t eee tee e ideis 91 H H s rear repetidas Heat pump shut down ico m M Hot water coil Hot water coil in Dehumidification mode 39 HOW TO USE THIS MANUAL 3 Humuidilsobion m 56 152 1 E 91 l VO configurabilty 4 impulse duratiOt V V 37 INSTALLATION V 12 Integrated electric heaters isisisi 38 INTRODUCTION 4 0j
111. of the external heat exchanger The formation of ice on the external heat exchanger often occurs when the external air is very cold and humid This condition significantly reduces the thermodynamic performance of the unit and could cause it severe damage Defrosting is only possible if 01 1 Enable defrosting There is a condensation probe on the first circuit H73 1 or H13 2 e A reversing valve is present When there are 2 circuits defrosting may occur separately or together The defrosting regulator controls the compressors on the circuit Circuit compressors cannot therefore be used by the temperature controller until defrosting has terminated on that circuit For single defrosting on two circuits please note that even if one circuit has completed defrosting and the compressor is off it cannot be used by the temperature controller The input and output of defrosting changes according to the values of the condensation probes see defrosting probes and the settings for the following parameters 8 2 1 Start of Defrosting The activation of the defrosting phase is essentially determined by 2 parameters 02 start of defrosting temperature pressure d03 defrosting time VVhen the probe detects temperature Ppressure values that are belovv the value of parameter d02 and the compressor is on it starts counting timer the number of minutes set on parameter d03 and the defrosting phase then starts Timing is interrupted
112. ompressor 1 Step3 Compressor 3 circuit 2 Step4 Capacity step of compressor 3 the start up sequence is NO1 Step3 Step2 Step4 The shutdown sequence is Step4 gt Step2 gt Step3 gt NO1 If the compressor with the lowest index is not available in the fixed start up sequence the first compressor to be turned on is the one with the highest index If the compressor becomes available and the power requested is equal to the power supplied the unit remains in the last operating status the compressor with the highest index is not turned off to enable the one with the lowest index If a compressor is shut down by an alarm or is counting safety timing it is not available and is therefore bypassed by the selection algorithm 6 2 2 Compressor timing The compressor start and stop operations should be compliant with the safety times set by the user using the parameters described below The interval between the start and stop of a compressor must be compliant with the safety interval controlled by parameter C07 safety time of compressor start stop This interval of time also applies to the start up of ERT 400 The interval between a start operation and the next must be compliant with the safety interval controlled by parameter C02 safety time of compressor start stop COMPR Compressor Time Time If the machine has several power steps the interval of time between 2 compressor starts C03 and stops C
113. onditions of installation use with equipment which permits access to hazardous parts without the use of tools installation use with equipment which does not comply with current regulations and legislation ERT 400 User Manual 91 104 14 DISCLAIMER This manual and its contents remain the sole property of Elivvell amp Controlli s r l and shall not be reproduced or distributed without authorization Although great care has been exercised in the preparation of this document Eliwell amp Controlli s r l its employees or its vendors cannot accept any liability whatsoever connected with its useElivvell amp Controlli s r l reserves the right to make any changes or improvements without prior notice ERT 400 User Manual 92 104 Logical OR Scroll up Stand by Reset Resetting Manual reset Scroll down BLINK Average hours Loads Set Point Range Hysteresis Non volatile memory Change over Label Enthalpy 15 GLOSSARY Several inputs that are linked in an OR relation is equivalent to a single input vvith the follovving status active if at least one input is active inactive if no input is active Scrolling up a menu means viewing all the parameters from the bottom to the top 08 gt 09 gt 10 Means that the unit is in waiting mode and that all the functions are temporarily interrupted Means to restore to zero Resetting an alarm means correcting the error condition and re activating t
114. onents and accessories Base Master Card Expansion 1 EXP402 expansion card Expansion 2 EXP405RH expansion card Keyb EKF400 RT simplified wall keyboard Keyb EKP400 RT panel keyboard Keyb EKW400 RT S wall keyboard ERT 400 User Manual 7 104 Models available Different models vvith different types of terminals that use Modbus or Televis communication protocols are available for some elements refer to the summary table below Relay basic model Molex quick plug in terminals on With Modbus protocol Code MW324060 BASE low voltage Faston connectors on relay connections screw connectors on keyboard With TELEVIS protocol Code MW324050 EXPANSION 1 Single model Code MW324100 EXPANSION 2 1 Model with plug in terminals plug in screw terminals Code MW324115 on high and low voltage KEYBOARD Single model code MW324630 KEYBOARD EKP400 RT Single model code MVV324680 KEYBOARD EKF400 RT 2082 model Code MVV324700 2 3 Diagnostics ERT 400 has an effective alarm system and protection functions High and low pressure digital alarms Single compressor shut down alarm Condenser fan thermal switch alarm Evaporator fan thermal switch alarm Worn filter alarm Outlet air temperature too cold alarm High and low inlet temperature alarm Heat pump shut down when external temperature is too low 2 4 Protocols ERT 400 can
115. p is active if one of the parameters H35 H40 and N06 N10 is set to 5 and the device is in antifreeze or heating mode See the diagram below set heating on PUMP off b07 b08 SET HEATING Heating set point All AIT probe PUMP Hot water pump 6 8 Evaporator fan The fan is only active if at least one relay is configured as evaporator fan output H35 H40 or N06 N010 6 The fan will be turned off if a fan shut down alarm has been generated it is in off mode t is active in OFF mode if the electric heater or hot water coil regulator in antifreeze mode requires heating If the machine goes from OFF to ON using the keyboard or remote input and the conditioner is in heating mode the fan observes a delay in activation of the hot water pump set with parameter P01 This function prevents any cold water from freezing the water coil If the unit is OFF and the electric heater or hot water coil regulator in antifreeze mode requires heating the fan observes a delay in activation of the hot water pump set with parameter P07 When going from OFF to ON and when heating is necessary in integration or antifreeze mode the hot water pump is always activated and the fan is switched on after a period of P01 ERT 400 User Manual 42 104 Fan ON compressors ON The compressors are activated vvith a delay in fan start up set using parameter P02 delay VVhen passing from ON to OFF vvith keyboard or remote input the fan i
116. r NO PolaityofIDI2ID131DI4DI5 O 15 Nm 0 N02 ConfiguationoflIDI2 1 O0 120 Nm ConfigmationofIDI3 8282220082 N04 ConfiguatonoflIDIA 0 N05 Configuration of ID15 8282821072 17 Configuration of relay 9 Configuration of relay 10 oO N08 Configuration of relay 1 0 N09 Configuration of relay 1208001007 l Configuration of relay 13 jo Configuration of ST7 lo Configuration of ST8 Polarity of 517 518 lo 01 Configuration of 517 if digital l0 Configuration of 518 if digital o FREECOOLING HUMIDITY PARAMETERS Par Description Min Max Unit of measurement L01 Enable free cooling 0 1 Flag L02 Freecooling offset in Cooling mode 0 25 5 C L03 Freecooling Freeheating band in Cooling mode 0 25 5 C L04 Freecooling offset in Heating mode 0 25 5 C L05 Freecooling Freeheating band in Heating mode 0 25 5 C L06 Freecooling freeheating activation delta 0 25 5 C L07 Minimum damper opening 0 100 56 108 Freecooling shut dovvn set point 127 127 C L09 Freecooling shut down delta 0 25 5 C L10 Enthalpic freecooling freeheating set point in Cooling mode 0 255 KJ Kg EI Enthalpic freecooling freeheating band in Cooling mode 0 255 KJ Kg L12 Enthalpic freecooling freeheating set point in Heating mode 0 255 KJ Kg L13 Enthalpic freecooling freeheating band in Heating mode
117. r Stand by mode Determines the status of electric heaters when the unit is in OFF or Stand by mode 0 Always off in OFF or stand by 1 On in OFF or stand by depending on the anti freeze electric heater regulator Anti freeze boiler electric heater set point in Heating mode It represents the temperature in Heating mode below which anti freeze electric heaters are activated Anti freeze boiler electric heater set point in Cooling mode It represents the temperature in Cooling mode below which anti freeze electric heaters are activated Maximum set point limit for anti freeze electric heaters Sets the maximum set point for anti freeze electric heaters Minimum set point limit for anti freeze electric heaters Sets the minimum set point for anti freeze electric heaters Anti freeze electric heater hysteresis Anti freeze electric heater hysteresis Activation of heat pump shut down See Heat pump shut down Heat pump shut down set point See Heat pump shut down Heat pump shut down hysteresis See Heat pump shut down Enable integrated electric heaters in heating mode 07 Integrated electric heaters not activated 17 Integrated electric heaters activated Activate electric heaters H O valve in dehumidification 0 Hot water valve in dehumidification not activated 1 Hot water valve in dehumidification activated Hot water pump deactivation hysteresis Minimum activation time of hot water pump ERT 400 User Manual 70 104 r19 d01 d 2
118. rature set point in Heating mode mode H55 Temperature delta in Cooling mode H56 Temperature delta in Heating mode The interaction of these parameters is illustrated in the graphs below Positive offset H53 cooling o H54 heating Delta 0 Delta 0 Negative offset H53 cooling o H54 heating Delta 0 Delta 0 Temp temperature 7 6 Load control How to set the parameters used to control the loads according to the temperature pressure conditions detected by the probes is described below 7 6 1 Control of compressors temperature controller The temperature controller calculates the load to be supplied through the compressors for both Heating and Cooling modes Temperature controller in Cooling mode TEMPERATURE CONTROLLER IN COOLING MODE If probe All analogue inputs is configured as an NTC inlet air input H77 1 the compressor is controlled in accordance with the ambient temperature and SET POINT Temperature of inlet water or air SET COOLz Cooling set point entered using keyboard 01 regulator proportional band in cooling mode ERT 400 User Manual 47 104 Temperature controller in Heating mode Povver SET POINT STEP 4 STEP 3 STEP 2 STEP 1 Temp Al1 Povver povver STEP 1 1st step STEP 2 274 step STEP 3 38 step STEP 4 4th step Temp Al1 AI1 probe temperature TEMPERATURE CONTROLLER IN HEATING MODE If probe
119. rom fan start up Delay between start up of fan and start up of pressure switch alarm diagnostics It is expressed in seconds Active flow switch input time Time that flow switch digital input must remain active in order to generate the flow switch alarm The timer starts after the flow switch bypass time It is expressed in seconds Inactive flow switch input time Time that flow switch digital input must remain inactive in order to reset the alarm It is expressed in seconds Number of pressure switch events per hour Number of pressure switch digital alarm events per hour If exceeded the alarm will switch from automatic reset to manual reset The external fan is de activated when the alarm switches from automatic to manual reset Compressor thermal switch by pass time from compressor start up The delay between start up of compressor and start up of compressor thermal switch digital alarm diagnostics It is expressed in seconds Number of compressor thermal switch events per hour Number of compressor thermal switch digital alarm events per hour If exceeded the alarm will switch from automatic reset to manual reset Number of condensing fan thermal switch events per hour Number of condensing fan thermal switch digital alarm events per hour If exceeded the alarm will switch from automatic reset to manual reset Anti freeze alarm by pass time The delay between machine start up selection of operating mode or switching from OFF gt ON and st
120. rs Table of Electric Heaters Hot H20 Coil Parameters REGULATOR PARAMETERS measurement 501 Regulation band for compressors in cooling mde 0 255 1602 Regulation band for compressors in heating mode 255 Regulation band for integrated electric heaters active Regulation delta for integrated electric heaters with heat pump Regulation delta for integrated electric heaters with heat pump not active 506 Regulation band for integrated hot water coil Regulation delta hot water coil with heat pump activated 0 2 55 C Regulation delta hot water coil with heat pump not activated 0 255 FAN PARAMETERS Par Description M Max Unit of measurement Fan output mode F02 Fan pick up time F03 Fan phase shift Duration of triac activation impulse Operation on compressor request Minimum speed in Cooling mode Maximum silent speed in Cooling mode F08 Set minimum temperature pressure of fan speed in Cooling mode Proportional band in Cooling mode Delta cut off Hysteresis cut off Cut off bypass time Max speed in Cooling mode Maximum temperature pressure of fan speed set point in Cooling mode Minimum speed in Heating mode Maximum silent speed in Heating mode Minimum temperature pressure set point of fan speed in Heating mode Proportional band in Heating mode Maximum speed in Heating mode F20 Maximum temperature pressure set point of
121. s designed to permit quick easy reference vvith the follovving features References References column A column to the left of the text contains references to subjects discussed in the text to help you locate the information you need quickly and easily Cross references Cross references All words written in italics are referenced in the subject index to help you find the page containing details on this subject supposing you read the following text when the alarm is triggered the compressors will be shut down The italics mean that you will find a reference to the page on the topic of compressors listed under the item compressors in the index If you are consulting the manual on line using a computer words which appear in italics are hyperlinks just click on a word in italics with the mouse to go directly to the part of the manual that discusses this topic Icons for emphasis Some segments of text are marked by icons appearing in the references column with the meanings specified below Take note information on the topic under discussion which the user ought to keep in mind Tip a recommendation which may help the user to understand and make use of the information supplied on the topic under discussion Warning information which is essential for preventing negative consequences for the system or a hazard to personnel instruments data etc and which users MUST read with care 2 INTRODUCTION ERT400 is a unit desig
122. s turned off vvith a delay set vvith parameter PO3 after shutdovvn of the last compressor or electric heater If heating is not necessary when passing from OFF to ON there is no delay See the diagram below on DEVICE off on PUMP off on COMP off on FAN off Time 1 2 DEVICE 400 COMP Compressor PUMP Hot water pump FAN Evaporator fan 6 9 Damper opening digital input If a digital input digital inputs is configured as damper input H23 H33 and PaN02 05 18 with input active the damper is forced to maximum opening 1009 This function has priority over everything else including alarms Q This function is useful when the operator notices that air circulation in an environment is insufficient and decides to force the damper to maximum opening ERT 400 User Manual 43 104 Operating modes Cooling Heating Night Auto Stand by Device off Off VVith EKF keyboard VVith EKP EKVV keyboards Operating modes configuration table 7 TEMPERATURE CONTROL FUNCTIONS Once the ERT 400 has been configured it is ready to control the loads according to the temperatures and pressures measured by the probes and the temperature control functions set using special parameters There are 6 operating modes Cooling Heating Stand by Night Auto Off Cooling this is the summer operating mode in this mode the unit is configured to generate
123. scale value Par H34 Maximum fan filter differential pressure value sets the value corresponding to a 5Vdc voltage expressed in millibar the value corresponding to a voltage of OV will be 0 millibar Configuration of output NO2 relay 0 Disabled 1 Reversing valve circuit 1 2 Reversing valve circuit 2 3 Condenser fan circuit 1 4 Condenser fan circuit 2 5 Hot water pump 6 Evaporator fan 7 Power step 2 8 Power step 3 9 Power step 4 10 Humidifier ERT 400 User Manual 65 104 H36 H37 H38 H39 H40 H41 H42 H43 H44 H45 H46 H47 H48 H49 H50 H51 H52 H53 H54 H55 H56 H57 H58 H59 H60 H61 H62 H63 H64 11 1 step electric heaters 12 2 step electric heaters 13 3 step electric heaters 14 4 step electric heaters 15 Damper 16 Defrost relay Configuration of output NO3 relay As for H35 Configuration of output NO4 relay As for H35 Configuration of output NO5 relay As for H35 Configuration of output NO6 relay As for H35 Configuration of output NO7 relay As for H35 Polarity of output NO2 relay Polarity of output NO3 relay Polarity of output NO4 relay Polarity of output NO5 relay Polarity of alarm relay output The relay output can be set for the corresponding outputs 0 Relay on with open output 12 Relay on with inactive output Configuration of analogue output 1 AN1 or TC1 The output to
124. significant H17 Pressure bottom scale value kPa 10 for inputs AI3 Al6 if configured for condensation control external heat exchanger e H21 Pressure top scale value rh for inputs Al3 6 7 8 if configured for humidity control e H22 Pressure top scale value 6 rh for inputs Al3 6 7 8 if configured for humidity control If input Al5 is configured as 0 5V input H75 2 or 3 the bottom scale value is given by Par H34 Bottom scale value measurement unit related to sensor used for input Al5 4 3 Configuration of digital inputs There are 11 voltage free digital inputs on the base unit 4 on the expansion module Al1 2 4 5 and 7 8 405RH expansion module can also be added if these are configured as digital inputs using the parameters H11 12 14 15 N11 12 Digital input polarity is defined by special parameters ID1 ID2 ID3 IDA is defined by parameter H78 ID5 ID6 ID7 ID8 is defined by parameter H19 ID9 ID10 ID11 is defined by parameter H20 Al1 2 4 5 if configured as multifunctional digital inputs is defined by parameter H73 1012401310141015 on the expansion module is defined by parameter N01 Al7 8 on the 405RH expansion module is defined by parameter N73 Refer to the following tables ERT 400 User Manual 20 104
125. splays the next abel or decreases the displayed value depending on context Buttons pressed simultaneously If you press both buttons simultaneously and release them after 2 seconds you go down one level in the display menu To move up one level press both buttons simultaneously for more than 2 seconds If the last level of a menu is displayed press the button and release it within two seconds to go up one level ERT 400 User Manual 28 104 5 2 2 Displays The unit displays information on its status configuration and alarms on the display and the LEDs on the front panel 5 2 3 Display In Normal mode the unit displays The control temperature in tenths of Celsius degrees with a decimal point or in Fahrenheit with no decimal point The alarm code if at least one is activated If several alarms are active the unit displays the first alarm listed in the Alarm Table If temperature control is not based on the analogue inputs and is linked to the status of a digital input Al1 or AI2 configured as digital inputs the On or Off label will be displayed depending on whether temperature control is active or not n Menu mode what the unit displays depends on its position Special labels and codes are used to help users identify the function set Decimal point when the operating hours are displayed it indicates that the value must be multiplied x 100 5 2 4 LED Compressor 1 LED ON if compressor 1 is active
126. ssor 3 If hours comp 1 gt hours comp 3 the start up sequence is Step3 gt Step4 gt N01 gt Step2 The shutdown sequence is Step22 NO1 Step4 Step3 If all the compressors are off the first item to be turned on is the circuit that has the lowest number of average operating hours In this circuit the first compressor to be started is the one with the lowest number of operating hours followed by the other compressor in the same circuit this saturates the circuit The next step is selected from the two compressors on the other circuit with less hours Example Let s imagine that the system is configured as follows NO1 Compressor 1 circuit 1 Step2 Compressor 2 Circuit 1 Step3 Compressor 3 circuit 2 Step4 Compressor 4 Circuit 2 If Hours of comp 1 Hours of comp 2 Hours of comp 4 Hours of comp 3 hours comp 1 hours comp 2 2 gt hours comp 4 hours comp 3 2 the start up sequence is Step3 gt Step4 gt Step2 gt NO1 The shutdown sequence is NO1 gt Step2 gt Step4 gt Step3 H08z0 and H09 1 EXAMPLE 1 COMPRESSOR VVITH ONE CAPACITY STEP PER CIRCUIT EXAMPLE 2 COMPRESSORS PER CIRCUIT The first compressor to be turned on is the one with fewer operating hours followed by the compressor on the other circuit the capacity step on the first circuit and the remaining capacity step The first item to be shut down is the compressor capacity step with less operating hours followed by the other compressor
127. sure value of the analogue probes AI3 A18 analogue inputs or the digital input digital inputs The configuration parameters are d12 Probe for end of defrosting circuit 1 d13 Probe for end of defrosting circuit 2 ERT 400 User Manual 56 104 Configuration parameters Coil drainage time Defrosting end sequence These parameters can acquire the values and meanings shovvn in the follovving table Value of parameters Description 0 End of defrosting on digital input 1 End of defrosting on Al3 2 End of defrosting on Al6 If d09 0 end of defrosting from digital input the unit also takes into account the digital input configured as End of defrosting circuit 1 digital inputs if d10 0 it takes into account the End of defrosting circuit 2 digital inputs In this configuration as soon as the input is activated circuit defrosting is deactivated If an analogue input is selected for the end of defrosting it ends when the pressure temperature rises above parameter d04 end of defrosting temperature pressure If the input is not configured defrosting only ends when the limit set for parameter d05 is exceeded maximum defrosting time Defrosting ends if it exceeds the duration set with parameter d05 At the end of defrosting regulation is performed as shown in the diagram below COMPR RV COMPR compressor RV reversing valve ED End of defrosting During this cycle the compr
128. t part with a simple snap on connector This makes installation easy and removes the risk of damaging the electronic parts during installation Use a small screwdriver to separate the connector master card from the main interface Place the screwdriver in the special holes in the side of the container and twist slightly until the two parts come apart ERT 400 User Manual 13 104 4 INSTALLATION A Before performing any operations make sure that an adequate external transformer has been installed on the unit Always follow the instructions given below when connecting the cards Do not apply loads exceeding those indicated in this specification to the outputs Connect the loads following the directions given in the wiring diagram Always use separate cables for high and low voltage loads 4 1 Wiring diagrams Connection of base unit oooooooooo o o o o o o o o o o Base unit Model with part plug in terminals ERT 400 User Manual 14 104 oo oo oo oo oo o o o o o o o o o o Oooo oOo Oo Lujo eeee Base unit Model with plug in terminals A Connector A B Connector B Alx Analogue input x IDx Digital input x ANx 4 20 mA output for fan control in circuit x TCx Output for external fan modules circuit x NC not connected 12 V dc GND C Connection to remote keyboard D Compressor relay 1 E L configuration relay E L M alarm relay N
129. tical humidity is not 0 175 Regulation in heating or cooling mode is the same The difference lies in the set point parameters and the regulation band 2 cases may arise OUTDOOR ENTHALPY ENTHALPY SETPOINT The enthalpy set point is set using parameter L70 enthalpy set point in cooling mode L12 enthalpy set point in heating mode In line with the set point value the damper is positioned to minimum opening If the indoor enthalpy falls below the set point and below the outdoor enthalpy value the shutter is fully opened and the indoor enthalpy is brought close to the set point Please refer to the diagram below ERT 400 User Manual 61 104 Damper Hentalpy Setpoint L10 or L12 A Outdoor hentalpy 100 LO7 L11 or L13 nside Hentalpy Damper Damper Outdoor hentalpy Outdoor enthalpy Inside hentalpy inside enthalpy OUTDOOR ENTHALPY gt ENTHALPY SETPOINT In these conditions the outdoor enthalpy cannot be used to lower the environment enthalpy unless the indoor enthalpy is higher than the outdoor enthalpy if so the damper is completely open Outdoor air can however be used to increase the environment enthalpy if it is lower than the set point Please refer to the diagram below Damper Hentalpy Setpoint L10 or L12 Outdoor hentalpy 100 L07 96 L11 or L13 Inside Hentalpy Damper Damper Outdoor hentalpy Outdoor enthalpy Inside he
130. tion pressure of steam and is called Liley s equation Pg exp 14 43509 5333 3 T Where T is absolute temperature From the definition of relative humidity we have ERT 400 User Manual 93 104 Pv RH Pg Where Pv is the steam pressure and RH relative humidity The specific humidity is given by the formula o 0 622 Pv P Pv where P is atmospheric pressure The enthalpy is given by the formula h 1 005 t w 2500 1 86 t KJ Kg where t is expressed in degrees Celsius 77 formula as a starting point enthalpy can be roughly calculated vvithout resorting to floating point Liley s formula is calculated at between 15 C and 40 C with second order polynomial interpolation to give Pg 0 005756 t 2 0 08636 t 1 7017 ERT 400 User Manual 94 104 16 COMPONENTS AND ACCESSORIES APPENDIX 16 1 Accessories Name Code Description MODULE CF 05 MW991000 Open board assembly on back of board for control of fan speed by phase cutting Characteristics of this model power 500W maximum current 10A Faston connectors MODULE CF 15 MVV991100 Open board assembly on back of board for control of fan speed by phase cutting Characteristics of this model povver 1500VV maximum current 8A Faston connectors MODULE CF 22 MVV991200 Open board assembly on back of board for control of fan speed by phase cutting Characteristics of this model povver 2200VV maximum current 10A Faston connectors MODULE C
131. trol of integrated electrical heaters Example of EL s MM ER 51 Control of integrated electrical heaters Example of E 50 Control of integrated electrical heaters Example with 2 electric heaters r05 2 50 Control of integrated electrical heaters Example with 4 electric heaters r05 4 49 Control of integrated hot water coil heating 51 M 43 Control DIODES un s s n 36 u55 2457 97 0B0 97 Copy Card device emeret ttt ete enen 23 Copy Corg eroriren 97 D Bun 57 Damper opening digital input 41 Dero tO M 53 Defrosting parameters dFT 69 Defrosting probes oa endende s 40 Defrosting control of compressors 54 Description of parameters Device off Off DIAGNOS a aa DIAGNOSTICS Digital PUS Digital inputs polgnty netter Digital inputs 1 Digital regulation v s ten Digital regulation user activation RIT CIO O 7 Dimensions of base module 7 Dimensions of EKF400 keyboard 9 Dimensions o
132. ture is lower than the outdoor temperature if this is the case the damper is completely open Outdoor air can however be used to cool the environment if the indoor temperature is higher than the cooling set point If this is the case the freecooling set point is the same as the heating set point Please refer to the diagram below Damper Freecooling Setpoint Heating Setpoint A Outdoor temperature 100 LO7 Inside temperature Damper Damper Outdoor temperature Outdoor temperature Inside Temperature inside temperature OUTDOOR TEMPERATURE gt HEATING SETPOINT The freeheating set point is calculated by subtracting the value in parameter L04 from the heating set point freecooling offset in heating mode In line with the freeheating value the shutter is positioned at minimum opening If the indoor temperature rises above the freeheating set point and above the outdoor temperature value the shutter is fully opened to cool down the environment and the indoor temperature is brought close to the heating set point ERT 400 User Manual 60 104 q 9 If the freeheating set point were to coincide with the heating set point the shutter would close as the same time as the compressors are switched off and any energy saved by using warmer outdoor air would be lost For this reason FREEHEATING SETPOINT HEATING SETPOINT 104 Please refer to the diagram below Damper Freeheating Setpoint Heating Setpoint
133. uits on unit 0 2 Num Number of compressors per circuit 0 4 Num H07 Number of capacity steps per circuit 0 3 Num Compressor start up sequence 0 1 Flag Circuit balancing 0 1 Flag Presence of heat pump 0 1 Flag ST1 configuration 0 2 Num ST2 configuration 0 2 Num ST3 configuration 0 3 Num ST4 configuration 0 2 Num ST5 configuration 0 2 Num ST6 configuration 0 3 Num Pressure bottom scale value 0 350 KPa 10 Polarity of ID1 102 ID3 104 0 15 Num Polarity of ID5 ID6 ID7 ID8 0 15 Num Polarity of ID9 ID10 ID11 0 15 Num Humidity top scale value 0 100 H22 Humidity bottom scale value 0 100 Configuration of ID1 0 25 Num Configuration of ID2 0 25 Num Configuration of ID3 0 25 Num Configuration of ID4 0 25 Num Configuration of ID5 0 25 Num Configuration of ID6 0 25 Num Configuration of ID7 0 25 Num Configuration of ID8 0 25 Num Configuration of ID9 0 25 Num H32 Configuration of ID10 0 25 Num Configuration of ID11 0 25 Num H34 Differential pressure bottom scale value 0 255 Num Configuration of relay 2 0 16 Num Configuration of relay 3 0 16 Num Configuration of relay 4 0 16 Num Configuration of relay 5 0 16 Num H39 Configuration of relay 6 0 16 Num Configuration of relay 7 0 16 Num Polarity RL2 0 1 Flag H42 Polarity RL3 0 1 Flag Polarity RLA 0 1 Flag H44 Polarity RL5 0 1 Flag Polarity of alarm relay 0 1 Flag Configuration of output fan 1 0 1 Flag Configuration of output fan 2 0 2 Flag H48 Disabling heating mode 0 1 Flag Selection of operating mode
134. ust have a compressor with a safety time set to 7 0 see safety timer so that both circuits can start simultaneously At defrosting start up if the 4 way compressor valve waiting time d06 0 and the valve compressor waiting time d07 0 the compressor remains on if not regulation is performed as shown below COMPR RV COMPR compressor RV reversing valve SD start of defrosting 8 2 2 Control during defrosting During the defrosting cycle loads are controlled as follows The compressors on the circuit being defrosted are turned on at full power or remain in this status the reversing valve of the defrosting circuit operates in the same way as in the summer cycle When the valve is reversed the timer starts counting a bypass time for the minimum pressure time on the circuit which is equivalent to the bypass minimum time in Cooling mode 401 If the condensation pressure is below F23 F24 the fan is OFF if it is above F23 it is ON at full power During the coil drainage phase the fans run at maximum speed in order to remove the water from the coil quickly this function can be deactivated by setting d70 0 In the following situations e there is a unit with single condensation F22 1 parameter 04 1 fan shut down in defrosting the fan will be turned off In all other situations it is always on 8 2 3 End of Defrosting The de activation of defrosting can be regulated by the temperature pres
135. witching from automatic to manual reset Sampling A automatic reset M manual reset Alarm alarm Sampling sampling Time time Alarms occurring several times vvithin the set sampling period 226 seconds vvill be counted once only To reset alarms configured for manual reset press and release key ON OFF A manual reset shuts down corresponding loads thus prompting the operator to take the necessary corrective action reset the alarm using the ON OFF control This type of manually reset alarm is used to signal potential problems that could damage the system 10 1 List of alarms The activation of an alarm have two effects It stops the loads involved It is displayed on the keyboard The signal consists of an Enn code where nn stands for a two digit number that identifies the type of alarm i e E00 E25 E39 The following table lists all possible alarms with their codes and block of loads gt X indicates load s OFF ERT 400 User Manual 78 104 01 6 enue N d si 007 143 1 224 H Auo 5 x dy 60V 4 HUNI uel L nou sjuana 10 uis JewayL uon 10 Jaquinu se paungijuoo esu puo2 o dn 32527 indu leqi3ip U21IMS neuiojne AQ pa1eAnoe jeuuau l 80V dn es Jenba 4 10sseuduio5 nou siuaA a UM cc UD UMS L4 10 ZOV 104 euuau se osse1duio 0 dn 32524 1 1 U23IMS 3neuioine 10N ewy p 0
136. x ERT 400 Electronic Control for Roof Top Close Control CONTENTS L Howto use nis tabualz 5 2 mbroduclofizaoneeo e t Rute b aaa adat 6 2 1 Main Characteristics oco bee e bea ET ERU ded s adus Ro 6 2 2 Componente and Modernia aa erit Ee reete Eee aged 7 2 3 Diagnosties 8 2 4 PFOTOCONS ce a a s s n s ss h l ssn eas ea 8 Mechanical Mosul Ada a a a ae 9 3 1 Dimensions earnan rte pe RS ee Pe RR RE AZA z S Eee Ae 9 3 2 Mechanical assembly of 5 es 2 11 3 2 1 EKW 400 keyboard connectioris eee tette eet ibd eid ye et eto e ee ele tee as 11 3 2 2 Mechanical assembly of EKW 400 keyboard ou essesssecssssescsessscnscssccsscuecsscnecssscsscuscasessecuecsscnsessesuscuecaseseesuecssenecsuecsecuscasessssuecuscuecsnesuscuecseessesuecuscneeasecneeneess 12 3 2 3 Mechanical assembly of EKP 400 keyboard 0 seessessssssecsssseesscsecseessessccuccucssccuccucensessecuecuscasssscsuccuccuecasesscsuccuesscauecsecuecaseasesucsuseuecsuesucsucsaceaesuecueeaeensensesueets 12 3 2 4 Panel CUTOUT r EE s n Z MI RR 13 3 2 5
137. y relevant if the dynamic set point function is activated and if probe Al4 is configured as outdoor temperature probe Outdoor pressure differential in Cooling mode This parameter is only relevant if the dynamic set point function is activated and if probe Al4 is configured as outdoor temperature probe Outdoor pressure differential in Heating mode This parameter is only relevant if the dynamic set point function is activated and if probe AIA is configured as outdoor temperature probe Offset AIT This parameter can be used to compensate the error that may occur between the temperature or pressure read and the actual value Offset AI2 as for H57 Offset AI3 These parameters can be used to compensate for the error that may occur between the temperature or pressure read and the actual value Offset Al4 as for H57 Offset AI5 as for H57 Offset Al6 as for H57 Offset AI7 as for H57 Offset AI8 as for H57 ERT 400 User Manual 66 104 H65 H66 H67 H68 H69 H70 H71 H72 H73 H74 H75 H76 H77 H78 H79 H80 A01 A02 A03 A04 A05 A06 A07 A08 A09 A10 A11 A12 A13 Mains frequency Mains frequency 50 Hz Mains frequency 60 Hz C or F selection 0 C F Serial address of series Serial address of device These parameters can be used to address the device if it connected to a personal computer or a supervision system These parameters are normally

ERT 400 Electronic Control for Roof Top, Close Control

Contents

Download Pdf Manuals

Related Search

Related Contents