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Carel Application program for pCO1, pCO2, pCO3 Standard Chiller

1. Cv MS LO J OFFON Decreasing configuration visualisation CR 2 Biz Cv MS LO OFON Decreasing configuration visualisation CR 3 Biz Cv MS LO JOFFON Increasing configuration visualisation CR 1 Btz Ly MS LO OFON J Increasing configuration visualisation CR 2 Btz Ly ME POFF OFON Increasing configuration visualisation CR 3 Bz Ly MS LO JOFFON J Enable solenoid forcingwhencompressorOFF_ Co MS LN WN Enablepump down C p_ MS LN NT Minimumpump downtime Cid Cp MS 7 50 foO0 wws seconds Conf step compressor for safety capacity Cq MS PMaxpowr Max power Min power Enable condensation Lt MS No NOS IL Type of condensation control Cr___ MRT inverter f hveer Stps Numberoffans per condenser Cr Ms 1 t2 Enable clock card LR MS Disabled Disabled Enabled DADANEIERS 0 p Enable high pressure prevention 81 MS N LI LN Type of high condensation prevention Gt MS fPPrsue JPres Tem Condensatonsetpoint CG LNS 20 0 999 X pare High condensation differential Soa Ms 20 J 0 99 4 bare
2. F9 MS 20 osso o minutes Delay MOP alam i Fa MS po 0 300 seconds _ Capacity required from driver with step 1 active stepped capacity m RL RA control or with continuous capacity control Capacity required from driver with step 2 active Fo CE MSH nem Capacity required from driver with step 3 active Fd dms 77 nem Capacity required from driver with step 4 active Fd MS 100 to L CARELEXVDRIVERS Autosetup_ gt O Installation of default parameters LS LNS LN N 9 Percentage ratio between fridge power and driver power P MSO OO Type of compressor or unit LE MS Screws LL See EVD manual Type of capacity control Fu M S Steps See EVD manual Typeofcoldmodeexchanger MS See EVD marvel Typeofheatmodeexchanger MS See EVD manual TI Threshold for LOP protection during chiller operation Dy MS L n 70 0250 0 Threshold for LOP protection during heat pump operation Dy MS L n 700 500 Threshold for LOP protection during defrost operation Fv MS L n 70 0250 0 Threshold for MOP protection during chiller operation P MS n 50 0290 0 Threshold for MOP protection during heat pump operation P MS 120 50 0290 0 MS iso Lannen IC M S 200 99 9 LE AAA CAREL EXV DRIVERS Advanced gt AAA AA ES i AAA i sos Ter ope
3. T6 MS io f 0 999 seconds 0 99099 seconds 0 99099 seconds 0 999 seconds Solenoid compressor start sequence T7 M S SOL CMP 0 SOL CMP 1 CMP SOL tise time the condenser fan is force to 100 Ce _ D i MS m TI f 0 99 o seconds 6 0 99 f seconds MS ts 0 999 A Jsecns O MS L n 0 999 J f seconds Derivation time for modulating configuration MS 3 J seconds Minimum increasing pulse Tb M S 1 5 099 9 seconds Maximumincreasingpulse Tb_ MB 380 CdCI l seconds Decrement forcing time at compressor stat Te Ms 9 J 0 99 seconds Delay to reach to the normal working Je TS O Unloadertime__________________ Te__ MS8 0 0 9999 INITIALISATION gt o IEA e y y o Deletion of memory and installation of default values vo us N v 1 Set new Constructor password 1234 w Po Cod 030221296 Rel 1 4 11 09 08 23 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 9 Screens screens can be divided into 5 categories USER screens not password protected they appear in all loops except prog and menu prog and show probe values alarms hours of operation of the devices time and date and can be used to set temperature and humidity setpoints and for clock set up They are marked with the symbol in the parameters table below password protected USER screens
4. A level of 0 zero disables the protection e MOP integral time Integral control time at the protection stage for high pressure evaporation temperature MOP When this parameter diminishes the control becomes faster Levels close to 2 5 seconds are advised for fast evaporators plates piping bands and close to 25 0 seconds for slow batteries refrigeration counters units A level of 0 zero disables the control e Delay in MOP start up The MOP action is disabled for this time when control starts This time is needed to allow for the achievement of low evaporation pressures in circuits that start with equalised pressures in the case of excessively reduced times the MOP control leaving the unit could be activated only because the evaporation pressure did not have the time to reach the real working level e High condensation temperature protection Maximum condensation temperature Only use if the driver controls the condensation probe or receives the level from the main control pCO Over and above this level the driver ignores the superheat control and progressively closes the expansion valve to limit the fridge capacity and subsequently the condensation pressure This way the evaporation pressure is considerably reduced Only use in plants that can operate at negative evaporation temperatures and that do not have other methods to reduce the condensation pressure unloading capacity reduction e Integral time for high cond
5. All the conditions may exist together condition 1 is always active while the others can be enabled or disabled separately Cod 030221296 Rel 1 4 11 09 08 29 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL Inlet temperature control Employed Inputs e Water temperature at evaporator inlet Employed Parameters Type of unit Total number of compressors Type of compressor capacity control Number of Capacity Control Steps Control set point Proportional band for control at inlet Type of control proportional or proportional integral Integration time if the proportional integral control is enabled Time between start up and first capacity control Time between first and second capacity control Time between second and third capacity control Time between third and fourth capacity control utputs used Liquid Solenoid Windings for compressor Line Delta Star All compressor capacity control relays oeeee ee eeeeee e e The thermostatic control according to the values measured by the temperature probe at evaporator inlet is based on proportional control According to the total number of configured compressors and capacity control steps per compressor the set control band will be subdivided into a certain number of steps of equal amplitude When the activation thresholds of the individual steps is exceeded a different compressor or capacity control steps will be activated To dete
6. CONFIGURAZIONE O O O a lt D M Ce Cz Ci Po P7 Pe D Pf Pj OJO Poe Ct Cu Cv Cw eri L Pj PARAMETRI Y CAREL EXV DRIVER gt Parametri di sistema O CAREL EXV DRIVER gt Advanced CAREL EXV DRIVER Autosetup e o Qe TEMPISTICHE INIZIALIZZAZIONE gt A A i Le DI CU Sao QQ Cw DI QQ 68 AA aa Parametridisistema F2 o A Fr o e em tu O VM Cod 030221296 Rel 1 4 11 09 08 24 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 10 EVD 200 electronic expansion valve The EV Driver module for piloting the electronic expansion valves EEV for the pLAN network makes it possible to control intake superheating to enable the refrigerating unit to operate more efficiently and with greater versatility We say efficiently because by improving and stabilising the flow of Condensor refrigerant to the evaporator we increases the system s overall performance while guaranteeing safety low pressure pressure switch less frequently tripped fewer returns of liquid refrigerant to the compressor Furthermore if the EEV is correctly sized use of condensation pressure or evaporation pressure either floating or at low set point considerably increases the system s efficiency while ensuring lower energy consumption and greate
7. Circulation Pump Fan 1 Liquid Solenoid Antifreeze Heater Relay 3 General Alarm Liquid inj Econ Oil cooler Line Contactor Triangle Contactor Star Contactor Freecooling ON OFF Valve pCO1 MEDIUM Slave addresses 2 3 4 Speed Controller Master Address 1 Speed Controller 3 way Freecooling Valve i ROO Cod 030221296 Rel 1 4 11 09 08 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL WATER WATER UNIT WITH MAX 4 SCREW COMPRESSORS UP TO 4 CAPACITY STAGES PER COMPRESSOR 7 4 CHILLER ONLY UNIT MACHINE TYPE 3 DIGITAL INPUTS N pCO2 pCO3MEDIUM Master Address 1 Slave addresses2 3 4 Evaporator Pump thermal Cutout D Differential OilLevel Diferenial OllLevel P DoubleSetpoint TI e Enablable Enablable DO Condenser Pump thermal Cutout lg mu ert ber i i Evaporator Pump thermal Cutout Low Pressure 2 Pressure switch Low Pressure 2 Pressure switch Double Setpoint O Evaporator Flow switch Enablable Enablable Condenser Pump thermal Cutout __ ANALOGUE INPUTS N pCO2 pCO3 MEDIUM pCO1 MEDIUM _ Master Address 1 Slave addresses 2 3 4 Inlet 1 Outlet 1 Outlet 1 Outlet 1 Outlet 1 Master Address 1 Slave addresses 2 3 4 High Pressure High Pressure Low Pressure 3 Low Pressure 3 Voltage Current External Get Voltage Curre
8. INDEX 1 APPLICATIONS AND FUNCTIONS PERFORMED BY THE SOFTWARE ooooocoooooocoonooooconooocooo oo ooo 7 Zi THE USER TERMINAL 4 545 AA FHS III ap ec pce ue abe DRE o de RARA a BH E 8 2 1 FPREANDOPERAION ilaele 8 22 EE 8 2 3 COLO Re RIO 9 3 PLAN MANAGEMENT BETWEEN BOARDS 4 000 ig og Wc e I Ub CPU RI yo Sip e FR i E C Rea 11 3 1 HOW TO ASSIGN TAE PLAN ADDRES SE Soiano 11 4 INSTALLATION OF DEFAULT VALUES 000 N NR a pale ARR EIE AE EM GUN eee a SEE a 12 5 LANGUAGE OPTION pia Saa oc abc oO A f o a ae E AA a ice o nta i a es 12 6 SELECTING THE UNIT OF MEASURE 4u 3 biae ea eee Rana eg de pow RR e na 12 S LIST OF INPUTS OUTPUTS iaa si Ee SA Oe eee EE EE E EE 13 7 1 CAILLER ONEFUNITE MACHINE TYPE 0 cocaina ainds 13 7 2 GHILLER UNIT HEATRUMP MACHINETRET ll 14 7 3 GHILLER UNITVITE FREEGOOLING MACHINETMPE SS celiaca 15 7 4 CPHIEEEBEONDE T NI Tes MACHINE TYPE li iii ata ee b adiuti 16 19 CHILLER UNIT HEAT PUMP WITH GAS REVERSING MACHINE TYPE AT NENNEN 17 7 6 CHILLER UNIT HEAT PUMP WITH WATER REVERSING MACHINE TYPE BP 18 87 GIST OF PARAMETERS riwipe les taste Let ter eee Lele a 19 Qu SCREENS Ee etna e deut s dtr tele ee NI 24 9 1 ERIE Sala 24 l0 EVD 200 ELECTRONIC EXPANSION VALVE 0 000000 a A I wee AD RR A eee RR ee 25 10d DRIVER PARAMETERS ssaa 25 102 Ee AHEAD ENEE 28 ll ONDE ON OEBE 4 pila aia PERIELIO dedit Pa 29 12 CONTROL carrelli date eater ie 29 124 CONTROL SET OUI een 29 1
9. Ms 60 foo bar Delayed start due to low pressure difference alarm Gb Ms P20 0 99 seconds High voltage alarm setpoint CC Gc Ms 400 90 999 w Highvoltagealarmdifferenial GEMS IG High current alarm set point LD0 MS 200 Cd IGG High current alarm percentage differential 90 Ms P100 0 99 Antifreeze setpoint Ge MS L n 0 99 LE 9 M S fio AMES puo A Pump status in case of antifreeze alam 18 JN Pumon f PumpON PumpOFF Cod 030221296 Rel 1 4 11 09 08 21 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL DESCRIPTION OF PARAMETER SCREEN MASTER FACTORY USER RANGE UNIT SLAVE VALUE VALUE MEASURE MENT LANE LEE Pump status in the event of evaporator or condenser flow switch alarm T Pumps off Solenoid valve management set poini oa MS 80 0 99 9 Solenoid valve management differential oa MS Dun 99 9 Antifreeze heater setpoini GES L n LI 099 Antifreeze heater differenti Gh_____ MS 10 099 Cycle reversing valve logie Gi MS NO No Nne J Type of freecooling control o o Gi MS ow ONOFF TI Antifreeze temperature GE MS 20 JJ 99 9999 C Defrosting probe configuration j M S Pressure switches Temperature Pressure switches Cj S
10. Amaogeoupuivaue Cs IN OUT 16 Double heating temperature set point UN A NA UT poor 1 po JUists O 1 OU 2 J e pLHNadresofut Cid 1 oU 3 Typeoffanmanagemet Cid 1 Or 4 O Untcofguatontye i O 1 OT 5 Nmberfcompesos O 1 OU 7 Kindofcompesst 1 OU 5 dMinimumcompressoron time Time to reach minimum capacity 1 OU 5 O JNfiimumcomprssoroftime O OU 53 Timebetweenstarts of different compressors Time to reach maximum capacity 1 OU 53 X Timebetweenthrusts ofsamecompressr 1 OUT 8 Bitzer working point E SH EE E GER he A pCO type 1l Or por size 1 OU pp 11 Biosreese or 12 JX Biosdta Z O Boot release 1 OU 14 X e JBotdia 1 OU 15 X J Sofwaedate day siz 126 127 Y pn uU Ls Unit status On Off gt Digital output 10 value Digital output 11 value 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 26 Cod 030221296 Rel 1 4 11 09 08 56 7 i i i 1 i 1 i i 1 1 2 2 2 2 2 2 WS LE an I cD EEN EN D E BEN p Soa ME NR E D OU PRE 3 WC Le D ESE p S E pp S ee D Ee Ep Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL Type Direction Address f Description Ee OUT Summer Winter sele
11. ES tel Cod 030221296 Rel 1 4 11 09 08 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 7 6 CHILLER UNIT HEAT PUMP WITH WATER REVERSING MACHINE TYPE 5 DIGITAL INPUTS Master Address 1 Slave addresses 2 3 4 Master Address 1 Slave addresses 2 3 4 Di Evaporator Pump thermal Cutout Evaporator Pump thermalCutout Dr Oil 1 differential Oil Level Oil 2 differential Oil Level D DoubleSetpoint Double Setpoint MEN Evaporator Flow switch Evaporator Flow switch Enablable Enablable Enablable Enablable D Summer Winter J S Summer Witer peque S ea eo ES iii ii ANALOGUE INPUTS NS pCo2 pC03 MEDIUM Master Address 1 Slave addresses 2 3 4 Inlet 1 Outlet 1 Outlet 1 Outlet 1 Outlet 1 Outlet Temperature 4 Outlet Temperature 4 BS Water temperature at Condenser Inlet Voltage Current External Get Voltage Current 9 point 5 pCO1 MEDIUM Master Address 1 Slave addresses 2 3 4 High Pressure High Pressure 3 Low Pressure 3 Low Pressure 3 Voltage Current External Get Voltage Current 6 point 6 Outlet Temperature Outlet Temperature Water temperature at Evaporator Inlet 1 Water temperature at Evaporator Water temperature at Evaporator Outlet Outlet High Pressure 2 High Pressure 2 Water temperature at Condenser BEEN Inlet 1 B8 Low
12. in multi board systems and will cause the total shutdown of the unit when all the circuits are in antifreeze mode A control parameter is provided which enables you to select whether to keep the main circulation pump ON or OFF in the event of an antifreeze alarm This will have effect only when all the circuits are in antifreeze status otherwise the pump will remain on In units with the freecooling coil in the event of antifreeze alarms the 4 way valve will be closed The heater activation is displayed on unit status of main mask 23 6 pCO alarms table Code Alarm description OFF Delay p System i Manual tS A AH 018 EvaporatorPump thermal Cutout o e Maud Mst 019 Condenser Pump thermal Cutout jMawa Ms 1031 Antiffeezealam Mengl Mst Siw 002 Int ng Automatic 50 30s Mst 003 Unit3Offine Automatic 50 308 Mst Et oo torte 8078s Ms e AI ite T Cil Differential Pressure Switch Settable 032 Low Pressure Differential o o Mengt jSetabe MstSlv_ 017 LowPressure2Pressure switeh to Manual jSetabe Mst Siv_ 016 jHighPresuePressueswih o o Manual tS 034 LowTransducerPressue o
13. password 1234 editable called up by pressing the prog key via these screens you can set the main functions times setpoints differentials of connected devices Screens referring to functions that are not available are not displayed They are marked with the symbol in the parameters table below password protected MAINTENANCE screens password 1234 editable called up by pressing the maintenance key Via these screens you can monitor devices set connected probes edit hours of operation and manage devices in manual mode They are marked with the symbol in the parameters table below password protected MANUFACTURER screens password 1234 editable called up by pressing key combination menu prog via these screens you can configure the air conditioner and enable main functions as well as choosing connected devices They are marked with the symbol in the parameters table below 9 1 List of screens Following is the list of screens shown on the display The table s columns represent screen loops and the first screen A0 BO is the one that appears when you press the relevant key You can then use the arrow keys to scroll through the others The codes Ax Bx Cx appear in the top right comer of the screens making them easier to distinguish The meaning of the symbols is explained in the previous paragraph The PSW symbol indicates screens where you are required to enter passwords
14. will not switch any compressors On Off Temperature values above set point band Temperature gt Point B will activate the compressors Temperature values below the set point Temperature lt Point A will deactivate the compressors A temperature threshold subdivided into summer and winter operation is also specified the installed devices are unconditionally disabled above below this threshold in order to prevent the units producing too much cold heat With capacity control compressors the activation and deactivation occur further outside of point A and B See the chapter Continuous capacity control with outlet control Cod 030221296 Rel 1 4 11 09 08 30 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL Control of water water chiller only units Employed Inputs Water temperature at evaporator inlet Water temperature at evaporator outlet Water temperature at condenser inlet Water temperature at condenser outlet Employed Parameters e Type of unit e Total number of compressors e Type of compressor capacity control e Number of capacity control steps e Control set point e Control band e e e e e Type of control inlet outlet Type of control at inlet proportional proportional integral Integration time if the proportional integral control is enabled Delayed starting of compressor capacity control stages Devices activation delay Outputs used e Liquid Sole
15. 1 at start up M S a NAS Adjustment mode for Driver 1 vave Ad MS Automtie aen rive 00 er Adjustment mode for Driver 2 valve Ae MS____ o Automtie J aen Number of steps for manual opening of Driver 2 vave Ae Ms TI 0 08 Steps Enter new Maintenance password E WS AI T eee CLOCK Hoursetting THE cumenhu _____ 023 Hours Minute setting Kit MS current minutes minutes Dayseting TKT HET Rueda Pd P Monthsetting K MS fPewentmot Pt Yearseting K MS ourentyer 0 99 P ERE RSS E 8 HE 09 A NM JN 0L YN EP 2000 O TI IS E F1 1 and F1 2 0 59 Minutes n O ___ PA E A 0 59 Minutes Select time bands F1 F2 F3 F4 for each day ke IN EE Enter new Clock password IO 1284 E EN eco es Winter set poni SM Second summer setpoint S HIS e Firewire 8 8 p per E a rn User password inputting POS tH 9G Minimum limitofsummersetpoint PAE SO 99 9999 P C Maximum limits for the cooling setpoint PAE Mt 99 9999 P C Minimum limit of winter set nt P M 40 99 9999 P C Maximum limits for the heating set point P2_____ M 7500 1 999 998 Selection of control probe P3____ M ft Input Output Control with probe at evaporator
16. 10 Standby due to eeprom or open valve error driver2 D OU 10 Probalmondveri SSS D OUT 19 J Probealamondiver2 Cod 030221296 Rel 1 4 11 09 08 57 CAREL CAREL S p A Via dell Industria 11 35020 Brugine Padova Italy Tel 39 049 9716611 Fax 39 049 9716600 http www carel com e mail carel carel com Agency Cod CAREL 030221296 rel 1 4 11 09 08
17. 4 CAPACITY STAGES PER COMPRESSOR 7 1 CHILLER ONLY UNIT MACHINE TYPE 0 DIGITAL INPUTS Master Address 1 Slave addresses 2 3 4 Master Address 1 Slave addresses 2 3 4 UsPmpTemdowu 1 CN 0 Fan 2 Thermal cutout High Pressure Pressure switch Compressor Thermal cutout Compressor Thermal cutout Fan 1 Thermal cutout Fan 1 Thermal cutout Fan 2 Thermal cutout Fan 2 Thermal cutout High Pressure Pressure switch High Pressure Pressure switch ID12 Compressor Thermal cutout Compressor Thermal cutout ANALOGUE INPUTS pCO2 pCO3 MEDIUM Master Address 1 Slave addresses 2 3 4 B Water temperature at Evaporator Inlet Water temp at Evaporator Outlet Water temp at Evaporator Outlet CE 86 Voltage Current Ext Set point Voltage Current Condenser Temperature Condenser Temperature Low Pressure Low Pressure 2 poA rm NTC 2 4 20mA 3 4 20mA 0 5V 4 NTC HT 4 20mA NTC PT 1000 5 4 20mA 0 1V 0 10V 6 4 20mA 0 1V 7 NTC HT 4 20mA NTC DIGITAL OUTPUTS E pCO2 pCO3 MEDIUM pCO MEDIUM Master Address 1 Slave addresses 2 3 4 Generic Master Address 1 1 Slave addresses2 3 4 Geneic L tze Gene Bitzer_ Generic Bitzer Relay Relay 2 NOS Circulation Pump Fan Star Contactor Fan 2 Fan 2 ANALOGUE OUTPUTS N pCO2 pCO3 MEDIUM pCO1 MEDIUM Master Address 1 Slave addresses 2 3 4 Master Address 1 Slave addresse
18. 9 99 9 C bar Defosingends Pg St 999 99 oar Drip off time PS ID seconds 0 0 Delayed defrosting stat PES 7180 f Oooo seconds Maximum defrostingime LN Ms 800 aam seconds Cycle reversing configuration Pi M S Comp always on Comp always ON Comp OFF start of defr Cmp OFF end defr Comp OFF start end Board identification number for supervisory network P MS DI pozo Card communication speed for supervision network Pj_ MS 19200 J Umgang bps Selection of communication serial network JPG MS X CAREPTC fPCael Modus LON meme M e e SEN e SAXON New user password inputting PKS E 9999 15 button terminal PGDO Terminal with 6 keys or built in version GE PROG MENU button PRG and MANUFACTURER button in the menu Constructor password inputting OES paras 0999 O E MES O TO O Unitconfiguration SB enen EE EE el EE O ES N if pCO1 Enable probe BO SN YN Enable probe B8 C IS N YN Enable probe Bi w N YN S if pCO1 EnblepobeB6 MS JN S N Enable probe BT SN YN EnableprobeB8_ SN Generic probe generic configuration B4 on pCO1 B5 on pCOC C3 No Current Voltage B6 on pCO2 external Set point voltage 0 10 V 4 20mA current 4 20mA Generic probe lower limit 4 M S 0 voltage and 999 9 999 9 C V A current 5 0 external set point EN mE
19. Address 1 Slave addresses 2 3 4 Master Address 1 Slave addresses 2 3 4 pm uM Cod 030221296 Rel 1 4 11 09 08 16 7 5 DIGITAL INPUTS Ne pCO2 pCO3 MEDIUM __ Master Address 1 Serious Alarm Slave addresses 2 3 4 Evaporator Flow switch Evaporator Flow switch remote ON OFF ID4 Evaporator Pump thermal Cutout Low Pressure Pressure switch Low Pressure Pressure switch ID6 Oil differential Oil Level Oil differential Oil Level ID8 Double Set point Evaporator Flow switch Evaporator Flow switch Enablable Enablable D Summer Winer High pressure pressure switch High pressure pressure switch Compressor Thermal cutout Compressor Thermal cutout ID13 ANALOGUE INPUTS pCO2 pCO3 MEDIUM _ Master Address 1 Slave addresses 2 3 4 Inlet 1 Outlet 1 Outlet 1 Outlet 1 Outlet 1 Outlet Temperature 4 Outlet Temperature 4 Inlet 1 Ter eo point B8 Low Pressure 2 Low Pressure 2 NTC 2 4 20mA 3 4 20mA 0 5V 4 NTC HT 4 20mA NTC PT1000 DIGITAL OUTPUTS es pCO2 pCO3 MEDIUM __ Master Address 1 Slave addresses 2 3 4 Generic Bitzer Generic Bitzer NO EvaporatorPump 0 NO4 CondemerPum ANALOGUE OUTPUTS N pCO2 pCO3 MEDIUM __ Master Address 1 Slave addresses 2 3 4 LS A NEC Y1 Belg I H 5 4 20mA 0 1V 0 10V Standard Chiller HP modulare per com
20. Enable delivery prevention Je Ms LN LN IL Deliveryprevenionsetpont EMS P900 0 99 J C X Delivery prevention differential GEMS I Antfreezeprevenionsetpont G3 ms JL n AJ J 999 999 LE Antifreeze preventiondifferenial 189 Ms 3110 ID Condensation setpoint gt G4 MS P140 f 9099 9999 bar C Condensing differential LD Ms L30 LL 99999999 barne Inverter maximum speed LD8 MS P100 ooo LN Inverter maximum speed LD8 MIS fI30 dD LN 0 99 seconds Enable serious alam o Ge MB LN J YN 5 Enablephasemontoraam 128 MIS LN YN Enableevaporatorflowswichalam o MS LN YN Enablecondenserflowswichalam 1 G7 MS JN LN Alarm set point for delivery temperature probe G8 Ms P120 J 0 999 IC Alarm differential for delivery temperature probe G8 Ms Lan 0999 High pressure probealamsetpont G9 Ms Jao ID ba High pressure probe alarm differential G9 Ms J20 ar X Low pressure probe alarm set point Ga Ms Jio 999 099 bar Low pressure probealarmdiferenial Ga Ms A P05 j 999 09 bar Alarm set point difference between high and low pressure Gb
21. Generic probe upper limit M S 630 voltage mE 999 9 999 9 400 current 5 0 external set point Type of probes on analogue inputs 1 and 2 pCO only TGR MIS 420m mA OSV y Type of delivery temperature probe CC HCE MIS Nc Neon y y Delivery probe lowerlimit CR MIS 300 909 999 Delivery probeupperlimit TGR MIS 150 00 999 High pressure probelowerlimit CC CZ CUE MSE ee lT 998999 hat High pressure probe upperlimit TET MS 300 o ar Low pressure probelowerlimit Ci MIS 99 9999 ar Low pressure probe upper limit 08 MIS 0 99 9999 Enable double set point T S O MT Disabled f Disabled Enabled Number of drivers present ooo i i a Ms Jo Jo2 Number of compressors present MIS J t4 Compressor rotation T OMS Y O NT Kind of compressor and load steps Cb TT Generic Step mE Generic Stepless Bitzer Step Bitzer Stepless Numberofstepspercomresor o d MIS 4 ed Im Cod 030221296 Rel 1 4 11 09 08 20 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL DESCRIPTION OF PARAMETER SCREEN MASTER FACTORY USER RANGE UNIT SLAVE VALUE VALUE MEASURE MENT Liquid Injection Economiser N ui Li Ess N Step1 Relaytlogic Cd SON O fon o Step1 Relay2logic ES FRONT Stepi Relay3logic Cd ES FRONT Step2 Relaytlogic Ce ES FRONT Step2 Relay2logic Ce ES
22. Pressure 2 Low Pressure Water temperature at Condenser Water temperature at Condenser Outlet 1 Outlet 1 NTC 2 4 20mA 3 4 20mA 0 5V 4 NTC HT 4 20mA NTC PT1000 5 4 20mA 0 1V 0 10V 6 4 20mA 0 1V 7 NTC HT 4 20mA NTC DIGITAL OUTPUTS N pCO2 pCO3 MEDIUM Master Address Slave addresses2 3 4 Geneic Bitzer Generic n CR2 NOS Evaporator Pump Jo o SS 04 Condenser Pump NOS i R3 Generic Bitzer Generic lt CR2 CR2 Evaporator Pump Condenser Pump R3 Liquid inj Econ Oil Cooler Liquid inj Econ Oil Cooler P CR4 CR4 NO9 Liquid inj Econ Oil Cooler L 2 PW EO CR4 CR4 RE ANALOGUE OUTPUTS pCO2 pCO3 MEDIUM pCO1 MEDIUM Master Address 1 Slave addresses 2 3 4 Master Address 1 Slave addresses 2 3 4 Cod 030221296 Rel 1 4 11 09 08 18 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 8 List of parameters The table below describes program parameters along with the following additional information screen code screens have a code in the top right corner to make identifying the parameter easier screen factory setting upper and lower limits of the range within which values can be effected unit of measurement and an empty column for writing the desired value To find the parameter you are interested in on the terminal s display proceed as follows e Locate the parameter
23. TI Maul Mst Siw 0933 High Transducer Pressure Mama T NSN 1021 FantThermalcutout Meng Mst Siw 022 Fan2Thermalcutout Meng Mst Siw 035 Highouletemperatue mana Msiswo_ 036 Hignvotage Maw stv 03 HighCurrent Mama Mst Siw 051 Evap PumpMaintenance Mama Mst 052 Cond Pump Maintenance o S Mavi Mst 053 Compressor Maintenance o o __ Mavd Mst Slv 060 BtProberaled Automatie Ups Ms 062 B3PrbeFaled J Automatic Ups Mtl 063 B4PrbeFald Automatic fios Mtv 064 B5PrbeFaled Automatic Ups Mst Siw 065 B6Probefaled J Automatic 10s Mst Siw_ 066 B7PrbeFaled J o Automatic Ups Mtl 067 B8ProbeFalet 1 Automatic fios MstSv 041 32KB Clock Card Failed o j Maewd Mst Siw 090 jOpertionlimtexeed Mama Mst Siw 091 Gasnotmanaged 1 Automatie MstSl
24. always be larger than the circuit where it is installed This percentage is used to calculate the position of the first opening pre positioned of the valve when the circuit starts up In the case of non modulating circuits 0 or 100 the percentage is the only parameter that influences the first opening by selecting 40 the valve will open 40 of its controlling course In the case of stepped circuits e g 0 25 50 100 the valve will open 40 of the controlling course multiplied for the first step of the circuit e g 40 25 10 The parameter is changed according to the ideal obtained from the ratio of the circuit valve capacity so that when the circuit is turned on there is no considerable liquid reflux for more than a minute in this case reduce the percentage or excessively low evaporation pressure problems for an excessively long period in this case increase the percentage The parameter also automatically influences certain PID regulation levels proportional gain Kind if compressor or unit Insert the unit compressor category in which the expansion valve is used This selection optimises the PID control parameters and the Driver s auxiliary protection bearing in mind the control specifications in the various kinds of plant The following choices are available Alternative Screws Scroll Rapid Group Cell Group Cell Cod 030221296 Rel 1 4 11 09 08 26 Standard Chiller HP modulare per compressore a vite Generic
25. capacity control relays These impulses command the compressor to be charged or discharged These impulses are at a constant frequency settable and of variable duration between two minimum and maximum limits also settable As there is no acquisition regarding the absolute position of the compressor s capacity control valve and consequently as no direct verification is possible of the power percentage input in the circuit a time based control is run With this control when a set time threshold is reached the compressor is considered fully charged discharged and thus control of the capacity control impulses is suspended Durata Durata Durata Impulso GE EN Impulso Gia i Pp l Calcolata Calcolata Calcolata Tempo s amp Periodo Impulso gt Periodo Impulso gt Periodo Impulso gt Cod 030221296 Rel 1 4 11 09 08 34 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 13 4 1 Configuration of continuous capacity control relays The control method of the capacity control relays differs for each compressor Therefore the software has a facility for configuring the enabling sequence according to the needs of different compressor manufacturers For multi card systems as several compressors are housed on the same machine it is considered that the compressors controlled by each pCO are perfectly equal and therefore the capacity control configuration selected on board the m
26. down of compressors temperature below point B The compressors are first unloaded by sending unload impulses of the maximum duration to the unloader relays The compressors are then powered down by reducing the number of requested devices at a rate equal to the time required to reach minimum set power FIFO Rotation is applied whereby the first powered up compressor is discharged and then powered down Instead if rotation is disabled the last powered up compressors is discharged and then powered down 13 5 8 Derivative regulation in the increasing zone In the increasing zone Tb mask comes controlled every Derivative Time if the outlet temperature is changed in order more than 0 2 C If this is true the compressor remains in stand by until the new control This management can be disabled with Derivative time equal to 0 Cod 030221296 Rel 1 4 11 09 08 36 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 14 Compressor rotation Compressor calls are rotated in order to equal the number of duty hours and power ups among the devices Rotation follows the FIFO logic the first compressor to be powered up is the first to be powered down At the initial stage there may be considerable differences in the on duty hours of the compressors however the hours are very similar to each other in steady state Rotation occurs only among compressors and not among capacity controls and in any case th
27. in the table below and the code of the screen it appears on e Using the list of screens coming section and screen code call up the screen on the terminal DESCRIPTION OF PARAMETER SCREEN MASTER FACTORY USER RANGE UNIT SLAVE VALUE VALUE MEASURE MENT 15 button terminal Terminal with 6 Terminal with 6 keys or built in version or built in version ee 22277 Tris dae Cn a fia Reset duty hours thresholds for evaporator pump M MN iN IL S Duty hours thresholds for condenser pump Ae M 10 P 0 99 housxi000 Reset duty hours thresholds for condenser pm Ae M IN YN Duty hours thresholds for compressor o A6 IN 57 10 P0 99 hours x 1000 Reset compressor duty hours ARM LN TI DN TI AdusimentofpobeB AT MIS 0 8999 AdusimentofpobeB NI MIS Jo fP 99 99 AdusimentofpobeB3 LA MIS 0 99 99 AdjustmentofprobeB4 A Ms 0 O AdusimentofpobeBo AB Ms 0 J O Adjustment of probe B 48 Ms 0 fP 99 99 __ AdusimentofpobeB7 A8 Ms 0 fP 99 99 Adjustment of probe BB o 48 MS Jo 99 99 Compressortenable ECO LN CY PYN Compressor2enable AM IN Compressor3 enable AMY Compressor 4 enable AM Aam fog deeo____b oae n1 VIN Manual release of Driver
28. not enabled it is treated as just any step The compressor can operate at this power level for an infinite time Cod 030221296 Rel 1 4 11 09 08 33 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL Stepped capacity control with control at inlet A description of stepped capacity control of 4 compressors with four capacity control steps each E Temperatura ingresso evaporatore 1P1 lt 1 Banda di regolazione Setpoint di regolazione All compressors and the relevant capacity control steps will be proportionally positioned in the band Increasing temperature values will cause the control steps to be subsequently input Each step will be input according to the set delay times The compressors will be started at the first entered capacity control stage If special management of the first capacity control stage was selected control will be effected according to the description in the dedicated section In any event the times for the capacity controls will be applied as described Stepped capacity control with control at outlet A description of stepped capacity control of 4 compressors with four capacity control steps each Activation of compressors if the water temperature measured by the probe located at the evaporator outlet exceeds the threshold of Control Set point Control Band Point B the number of power stages will be increased the power stages were input according
29. of the refrigerator cycle that is during the passage from refrigeration to heating or vice versa there is no exchange between the evaporator and condenser functions In this mode the water circuit is reversed and the compressors are controlled by the temperature at evaporator or condenser inlet outlet according to the selected mode Cod 030221296 Rel 1 4 11 09 08 32 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 13 Typesof controlled compressors Stepped capacity control A maximum number of four compressors are managed with a maximum of four capacity control steps each Capacity control is achieved by three relay outputs which when suitably commanded short circuit the refrigerant thrust by the compressor varying its capacity and therefore the power input into the circuit Configuration of stepped capacity control relays The enabling sequence of the capacity control relays differs for each compressor Therefore the software has a facility for configuring the enabling sequence according to the needs of different compressor manufacturers For multi card systems as several compressors are housed on the same machine it is considered that the compressors controlled by each pCO are perfectly equal and therefore the capacity control configuration selected on board the master card also applies to the slave cards The following table shows examples of the configuration of the dedicated digital output
30. respected but in normal mode they are ignored and an equal time for all the uloaders is used set by mask Te With Bitzer compressor the minimum time is force to 10 second Special management of capacity control first stage A facility is provided for enabling special management of the first stage of capacity control managing the compressor s special requirements when it is operating at low power In general the control entails the use of the first capacity control stage only at power up and if temperature falls below the control set point When controlling the compressor this type of control uses a reduced power modulation range between the second and maximum power stages Management varies according to whether the compressor is in its starting or disabling stage In both cases you are recommended not work at 25 power for too long e Starting after being started if the compressor does not receive any thermostatic request for changeover to the second capacity control stage the changeover is forced by the software after a time which can be set on the screen T1 e Power down if a reduction in the power of the circuit is requested power is controlled between the maximum and second capacity control stage Only if temperature drops below set point value the compressor is forced to operate according to the first capacity control stage for the set time T1 This special operating mode is enabled from the screen If the first capacity control step is
31. setpoint a difference of at least 3 C or levels too close to zero less than 2 C in order to avoid the protection intervening in the event of an incorrect reading of the control probes Cod 030221296 Rel 1 4 11 09 08 27 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL e Superheat neutral area Neutral area for PID control In this setpoint context the driver will stop the control and the valve not make any movements The control starts again when the superheat exits the neutral area e Derivative time Derivative time of PID control Avoid levels greater than 4 seconds in order to prevent unstable control e Low superheat integral time Integral time for low superheat control On this parameter decreasing the control of low superheat diverts more speed energy Levels close to 1 0 seconds are advised for fast evaporators plates piping bands and close to 10 0 seconds for slow batteries refrigeration counters centralised units A level of 0 zero disables the control e LOP integral time Integral control time at the protection stage for low pressure evaporation temperature LOP When this parameter diminishes the control becomes faster Levels close to 1 0 seconds are advised for fast evaporators plates piping bands and close to 10 0 seconds for slow batteries refrigeration counters units t is advisable to deactivate for centralised use supermarket use centralised units
32. the green LED on the ON OFF key and by a special wording on the main menu screen Power up and power down of System Control is by the master board if the board is powered up it will power up also all the system s slaves and vice versa if OFF Power up and power down of Circuit Control is by the slave board the individual slave boards can be powered up or down from the supervisor digital input only if the master card is ON The main mask of the terminal connected to master board shows on normal working the status of unit If the master circuit is switch off by digital input the status blink between unit status and circuit off Circ OFF 12 Control There are two different modes for controlling the control thermostat control depending on the water temperature values measured by the probe installed at the evaporator inlet control depending on the water temperature values measured by the probe installed at the evaporator outlet In the first case the control is proportional and based on the absolute temperature value measured by the probe in the second case control features a dead band based on the time the temperature measured by the probe remains over certain thresholds The type of control in any case depends on the type of compressor managed if the compressor features stepped capacity control load steps then either type of control can be used if the compressor features continuous capacity control then only outlet tem
33. to the set parameter known as delay between power up of different devices EH 1 Temperatura Uscita Evaporatore Setpoint di Punto B regolazione C1P1 Rido Dispositivi In this configuration the time between the activation of the steps will be equal to the set time between the starts of different compressors while in the event of capacity control the delay time between load steps set will still be applied and therefore the higher of the two times will prevail Tempo s Power down of compressors If the water temperature measured by the probe located at the evaporator outlet falls below the Control set point Point A then the number of load steps will be decreased according to the parameter device deactivation delay CC dd 8 Soglia spegnimento Setpoint Temperatura Uscita forzato Regolazione Evaporatore Punto A Tempo s Ritardo Disattivazione Dispositivi If the temperature falls below the forced off threshold the compressors are stopped irrespective of the set delays to avoid the activation of the antifreeze alarm Continuous capacity control A maximum number of four compressors are managed with continuous capacity control The compressor s capacity is controlled by two relay outputs which when suitably controlled enable compressor power to be increased or reduced varying the capacity of the compression chamber Compressor power is controlled by sending impulses to the outputs of the
34. will be piloted in parallel 21 7 2 Proportional integral control Cod 030221296 Rel 1 4 11 09 08 45 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL Differenziale Free Cooling gt i Differenziale Free Cooling 10 Volt Valvola ON OFF Free Cooling Rampa 0 10V Inverter Temperatura Uscita Evaporatore The devices whether they are valve or fans will be activated in the second half of the control differential through the effect of the integrating control Their activation will be tied to the set integrating constant the slower it is the greater the value attributed to the specific parameter The amplitude of the valve control step will be 5 50 of the said control differential All proportional outputs relating to the different units of the system will be piloted in parallel Setpoint Free Cooling 21 8 0 10 Volt Free Cooling ON OFF valve The Free Cooling valve is proportionally commanded in a different way depending on whether condensation control is in steps or by inverter The control diagrams of the two different situations are shown below 21 9 0 10 Volt Free Cooling ON OFF valve with stepped condensation 21 9 1 Proportional control Differenziale Free Cooling Valvola 0 10V Free Cooling TT i i RE 10 Volt Setpoint Free Cooling i Temperatura Uscita Evaporatore The proportional control ramp of the Free Cooling valve will be calculated inside the
35. 2 JINEET TEMPERATURE CONTROL pnl 30 129 SOUFLENIEMPERATURECONIRO Larnell 30 124 CONTROL OF WATER WATER GHILLER ONLY UNITS geet 31 12 5 CONTROL OF WATER WATER CHILLER UNIT WITH GAS REVERSING HEAT PUMP 31 12 6 CONTROL OF WATER WATER CHILLER UNIT WITH WATER REVERSING HEAT PUMP sees 32 13 TYPES OF CONTROLLED COMPRESSORS 414 1525 ca ei ug Nod de ate NANI e whee ode Seid eee Soe 33 19d STEBPEDOAPAGIPY CONTRO cuida lada oc cai talon cata al Ratan Delaware 33 19 2 STERPED GAPAGIE CONTROL WITH CONTBOL AT INDET scalari 34 13 3 STEPPED CAPACITY CONTROL WITH CONTROL AT OUTLET iore ipo rip t eterne o 34 lod CONFINUOUS GRPACITY CONTROL uccide is ili ile ila cota DN p DI MEM MC 34 13 0 CONTINUOUS CAPACITY CONTROL WITH CONTROL AT OUTLET scsi etn te bt ep eeu tup et tiet ela 35 IN THE INCREASING ZONE TB MASK COMES CONTROLLED EVERY DERIVATIVE TIME IF THE OUTLET TEMPERATURE IS CHANGED IN ORDER MORE THAN 0 2 C IF THIS IS TRUE THE COMPRESSOR REMAINS IN STAND BY UNTIL THE NEW CONTROL THIS MANAGEMENT CAN BE DISABLED WITH DERIVATIVE TIME EQUAL TO O etri oci ut leda eden Lt 36 A COMPRESSOR ROFATLON 32555244 E goed he do 2 ded Mut doe de we fue d Dated Lar volo b the AL ded Suh hos us abe 37 t5 STARTING A SINGLE COMPRESSOR soeke Wace ina SCRI ee ek a Re ei 37 15 2 STARTING THE COMPRESSOR NIIT dos 37 159 COMPRESSOR START SIH ln NEE 37 l6 FORCED CAPACITY CONTROL cutis ara le E ual ace E eov e
36. 30221296 Rel 1 4 11 09 08 42 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 21 3 Free Cooling Thermostat Free Cooling control exploits the calculated control set point values taking into account any compensation and the set Free Cooling control differential The control is based on the water temperature measured by the probe located at the evaporator outlet considering the effective supply of cold of the Free Cooling exchanger according to the different external temperature conditions Two different control modes can be selected proportional proportional integral the integration constant must be set in the latter case The set point for thermostatic control of Free Cooling will be determined according to the nominal value of the temperature of the water you wish the unit to produce Depending on the type of control adopted for the compressors inlet outlet as the temperature references are different two distinct control graphs will be identified In machines controlled output with a neutral zone the Free Cooling control set point will correspond to the control set point of the compressors Free Cooling Set point Compressors set Point Zona Neutra Compressori Banda Regolaziorie Free Setpoint Free Cooling Setpoint Compressori T Out The proportional control band will be equally distributed at the sides of the set point The proportional band will be equally distributed on both si
37. CAREL Standard Chiller Modular HP 1 4 Generic ber dhee deeg screw vout dine me laas valve Em ie hs paras i i ip ri o A Rati LET dri ips LT Li SEA ER ME aur m co EE Fio ie c M e 5 LES E K LA i sd RULL rom s TE DH DT User manual Manual Version 1 4 dated 11 09 08 Program code FLSTDmMSBE LEGGI E CONSERVA a ISTRUZIONI lt READ AND SAVE THESE INSTRUCTIONS Technology amp Evolution LEGGI E CONSERVA QUESTE ISTRUZIONI 4 READ AND SAVE THESE INSTRUCTIONS We wish to save you time and money We can assure you that the thorough reading of this manual will guarantee correct installation and safe use of the product described IMPORTANT WARNINGS BEFORE INSTALLING OR HANDLING THE DEVICE PLEASE CAREFULLY READ AND FOLLOW THE INSTRUCTIONS DESCRIBED IN THIS MANUAL The device this software refers to was built to operate risk free for the intended purposes providing software installation programming operational control and maintenance must be carried out by qualified personnel according to the instructions in this manual all the conditions prescribed and contained in the installation and use manual of the application in question are observed All other uses and modifications made to the device which are not authorised by the manufacturer are considered incorrect Liability for injury or damage caused by the incorrect use of the device lies exclusively with the user
38. CR4 4 way Valve 4 way Valve ANALOGUE OUTPUTS wo pCO2 pCO3 MEDIUM Master Address 1 Slave addresses 2 3 4 Master Address 1 a A pCO1 MEDIUM Slave addresses 2 3 4 pCO1 MEDIUM Slave addresses 2 3 4 e Speed Controller Speed Controller Speed Controller Speed Controller ell p UH we ui Nnm Cod 030221296 Rel 1 4 11 09 08 14 7 3 DIGITAL INPUTS N pCO2 pCO3 MEDIUM BN Master Address 1 Slave addresses 2 3 4 Evaporator Flow switch Evaporator Flow switch Remote ON OFF Remote ON OFF ID4 Pump Thermal cutout Low Pressure 2 Pressure switch Low Pressure 2 Pressure switch D Differential Oil Level Differential Oil Level ID8 Double Set point 09 Fan 1 Thermal cutout FaniThemnalcutout poe q OR ANALOGUE INPUTS pCO2 pCO3 MEDIUM Master Address 1 Slave addresses 2 3 4 es Inlet 1 Outlet 1 Outlet 1 B3 Water temperature at Freecooling Inlet Outlet Temperature 4 Outlet Temperature 4 B5 Outside Air Temperature 1 Voltage Current External Get Voltage Current point High Pressure 7 High Pressure 7 Low Pressure 2 Low Pressure 2 2 1 NTC 2 4 20 mA 3 4 20mA 0 5V 4 NTC HT 4 20mA NTC PT1000 DIGITAL OUTPUTS N pCO2 pCO3 MEDIUM __ Master Address 1 Slave addresses 2 3 4 Generic Bitzer Generic Bitzer NOS CirculationPump I ANALOGUE OUTPUTS NfO p
39. FRONT Step2 Relay3logic Ce SON FRONT Step3 Relaytlogic SR FRONT Step3 Relay2logic SON FON Step3 Relay3logic SO FRONT Step4 Relaytlogic gS FON Step4 Relay2logic gS FON Step4 Relay3logic gS FRONT Off configuration for relayi ES FRONT Off configurationforrelay2 SON FRONT Stand by configurationforrelayt LH MS OFF OEO Stand by configuration for relay 2 Ci M S ON OFF ON Decrementing configuration for relayt O T SF ONT OFON _Decrementing configuration for relay 2 JO MS FON OFON Incrementing configuration for eler LD MS LO OFON Incrementing configuration for relay k MS LOF OFON J Compressor configuration visualisation OFF CR 1 Btz ct Jms OFF OFON Compressor configuration visualisation OFF CR 2 Biz Ct WSF ONT OFON J Compressor configuration visualisation OFF CR3 Bz Ct Ms ore oo o JOFFON J Compressor configuration visualisation stand by CR 1 Btz Cu MS PFOFF fo AJ JOFFON J Compressor configuration visualisation stand by CR 2 Btz Cu MS POFF fo AJ JOFFON SS Compressor configuration visualisation stand by CR 3 Btz Cu MS POFF f XJ JOFFON Decreasing configuration visualisation CR 1 Bz
40. G VALVE WITH INVERTER CONTROLLED CONDENSATION iii 47 CONTROL ALGORITHM FOR BITZER SCREW COMPRESSORS c celere 48 221 PROTECTION enna aa 49 222 STARrUuPFRoCEbUREe o lle iol suh td rd aul alii dl iei eee EE LH 50 20 9 IGAPACITIGONPDBOL zena ela ct tcn tab S 50 ALARMS Gila QE AU ndr XV A A RIA CASE A oido e CU Ne Oo ERBA RIA 51 291 SEROUS ALARM Slice 51 e RSNA GUI ALARM aeii AN 51 233 WARNINGONEYALARMS sla 51 234 PRESSURE DIFFEREN HAL TES 0 S 01 WEE 51 230 ANIIFREEZE CONTR e 51 230 IPOD ALARMS TAB LE collana lados 52 237 DRIVER CARD ALARMS teo nto o a tia isa 53 ALARM LOG Griso do SAA a o RES AR AED RA A A RAS dios de aea A cde Gira RE 54 24 STANDARD O recisi 54 2412 ABVANCEDLOGii era ae rrr tre rere rrr 54 o A SS A CODE Sakma A A EA 54 SUPERVISOR adas vb la M acras o a rea E mu cis ao ds o a ai aid 55 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 1 Applications and functions performed by the software Type of control unit AIR WATER CHILLER e Chiller only e Chiller Heat pump e Chiller Freecooling WATER WATER CHILLER e Chiller only e Chiller Heat pump with gas reversing e Chiller Heat pump with water reversing Type of control Proportional or proportional integral control on the evaporator water inlet temperature probe Time control of the neutral zone on the evaporator water outlet temperature probe
41. I e po O Fd Independent CARELEXV DRIVERS System parameters gt II Activation of driver beten o Fo MS J N J J J YN Tpeotvave R Ms _ P SeeEVDMama Select bi directional valve o EA IS J N LN Typeofrefrigerant EMS R47 gt 3 Bee EVD Manual Custom Valve minimum steps SRB MS O 8100 Custom Valve maximum steps RB Jms 1600 eo Custom Valve closing steps F3 MS ao 0 80 Custom Valve enable extra step atopening PR MS N J e PYN __ Custom Valve enable extra step at closure o dP we N DN __ Custom Valve current operating LS MS Lean J f 0s00 ma Custom Valve current stopped o ER MB o P0400 A Custom Valve frequency ER MS 10 P32 3 39 Dem Custom Valve duty cycle LR MS dao tO 95 5 Custom Valve stand by steps F7 MS O OD 94 o J MiimumvalueofStpressuresensr FB Ms 05 fP 99 000 Bar Maximum value of S1 pressure sensor PR MS 4 70 P35 2000 Bar Delaylowsuperheatalam o F9 MS 120 eoo seconds Delyhighsupeeatalrm
42. OOZpCOSMEDUM Master Address Slave addresses 2194 Y2 SwayFemodngVawe ooo o S 5 4 20mA 0 1V 0 10V Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL CHILLER UNIT WITH FREECOOLING MACHINE TYPE 2 pCO1 MEDIUM Master Address 1 Slave addresses 2 3 4 Serious Alarm Serious Alarm Evaporator Flow switch Evaporator Flow switch Remote ON OFF Remote ON OFF Pump Thermal cutout Low Pressure 2 Pressure switch Low Pressure 2 Pressure switch Differential Oil Level Differential Oil Level Double Set point Fan 1 Thermal cutout Fan 1 Thermal cutout Fan 2 Thermal cutout Fan 2 Thermal cutout High Pressure Pressure switch High Pressure Pressure switch Compressor Thermal cutout Compressor Thermal cutout pCO1 MEDIUM Master Address 1 Slave addresses 2 3 4 High Pressure 9 High Pressure 9 Voltage Current External Set Voltage Current point 6 Outlet Temperature Outlet Temperature 6 Water temperature at Evaporator Inlet Water temperature at Evaporator Outlet 1 Water temperature at Evaporator Outlet 1 Outside Air Temperature Water temperature at Freecooling Inlet 6 4 20mA 0 1V 7 NTC HT 4 20mA NTC pCO1 MEDIUM Master Address 1 Slave addresses 2 3 4 Genere Bitze Generic Bitzer CRI CR2 Se CR3 PWI PW2 CR4 e i Relay 1 Relay 2
43. Polygon compressed between 1 2 3 4 5 6 points Inside this zone the compressor s capacity is unlimited and is managed solely according to the requests made 22 1 5 ZoneD e Polygon compressed between points 6 7 10 1 The maximum capacity of the compressor is limited to 75 without any time limit In this case the compressor is not compressed 22 1 6 Zone E e Polygon compressed between points 7 8 10 1 The maximum capacity of the compressor is limited to 50 and this condition is allowed for a maximum of 10 minutes if after 10 minutes the pressure level is not yet within the polygon the compressor is stopped immediately Cod 030221296 Rel 1 4 11 09 08 49 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 22 1 7 ZoneG e above max o If the limit is reached when already operational the compressor is stopped immediately On the contrary only at the start above this limit the maximum capacity of the compressor is limited to 50 and this condition is allowed for a maximum of 5 minutes If after 5 minutes from the start the pressure level is still not inside the polygon the compressor is stopped immediately otherwise all the above protections are applied 22 1 8 High delivery temperature alarm The alarm condition that can be set via relative setpoint and hysteresis stops the compressor immediately The default level is 120 C 22 2 Start up procedure On start up the compressor capacity is l
44. Types of compressors Screw compressors with 4 capacity control steps Screw compressors with continuous duty capacity control Bitzer screw compressors Maximum number of compressors From 1 to 4 with a maximum of 4 capacity control steps 1 compressor for every DCO From 1 to 4 with continuous duty capacity control 1 compressor for every pCO Compressor duty call rotation Rotation of all compressors to FIFO logic for stepped and continuous duty capacity control Condensation Condensation can be performed according to temperature pressure or ON OFF Fan management in stepped mode or with 0 10 Volt proportional signal Type of defrosting Overall defrosting of all pCO units connected to network Independent Simultaneous Separate Safety devices for all refrigerating circuits High pressure pressure switch transducer Low pressure pressure switch transducer Oil Oil Level differential pressure switch Compressor thermal cutout Thermal cutout for condensation fan High delivery temperature to compressor Pressure differential alarm Antifreeze alarm Low superheat alarm only with EVD driver enabled System Safety devices Serious alarm input shuts down entire unit Flow switch input for evaporator condenser shuts down entire unit Pump thermal cutout input shuts down entire unit Remote ON OFF input Check electronic expansion valve driver operating status only with EVD driver enabled Other functions Alarms logging Bui
45. USTOM valve is selected the configuration levels shown below appear Minimum Steps Minimum opening steps used only in repositioning to capacity change Maximum Steps Maximum opening steps Closure Steps Steps to obtain a complete closure of the valve Extra Opening Step Enabling opening steps beyond the maximum ones Do not activate if one s own expansion valve has an overall course closure steps greater than the controlling course Maximum steps for example with the Sporlan valve Do not use without prior authorisation from one s own EEV supplier at the enabling of the steps against the opening mechanical end stroke These steps are given every second up to 30 of the maximum steps in the event that the valve is completely open with overheating above the setpoint On return to normality superheat below the setpoint and or valve opening below maximum the meter for the extra steps provides is reset and if the fault reappears others will be provided again 30 greater than the maximum steps Extra Step Closure Enabling of closure steps with valve already completely closed Do not use without prior authorisation from one s own EEV supplier at the enabling of the steps against the closure mechanical end stroke These steps are given every second up to 30 of the maximum steps in the event that the valve is completely closed with overheating below the setpoint On return to normality superheat above the setpoint and or valve opening dif
46. ace supplied separately from the pCO card for installation instructions for the serial communication optional cards see installation manual of pCO card The software can handle the following supervision protocols e CAREL e Modbus e LonWorks via special optional card e rend via special optional card e Bacnet via external gateway or PCO WEB If the serial communication values serial address and communication speed are correctly set the parameters transmitted by the unit will be as shown on the following table By setting the serial identification number to 0 the communication towards the supervision system is disabled Follow the list of variables managed by the supervisor Cod 030221296 Rel 1 4 11 09 08 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 25 1 1 1 Key A Analogue variable D Digital variable Integer variable IN Input variable pCO Supervisor OUT Output variable pCO gt Supervisor IN OUT Input output variable pCO Supervisor Type Direction__ Address Description e O Analogue input 1 value EA p 70Up di 39 Analogue input 2 value A oO 3 XO Analgueinpt3vlue Cid A OU 4 Analogueinput4value Cid A OU 5 AnelegueinputS5valle Cid A OU 6 Amloguenpt uehe A OUT n Analogue input 7 value A OU 8 J MAnalogueimput8vauwe CS A OU 9
47. an 1 Thermal cutout High Pressure Pressure switch High Pressure Pressure switch Compressor Thermal Cutouts pCO1 MEDIUM Slave addresses 2 3 4 High Pressure 3 Low Pressure 9 B2 Water temperature at Evaporator Water temperature at Outlet Evaporator Outlet u EE ME point 6 Voltage Current External Get Voltage Current Outlet Temperature UI Outlet Temperature 4 Outlet Temperature 4 B5 Condenser temperature Condenser temperature Voltage Current External Get Voltage Current point High Pressure 7 High Pressure 7 Low Pressure Low Pressure 2 Outlet Temperature Water temperature at Evaporator Inlet Water temperature at Evaporator Water temperature at Outlet 1 Evaporator Outlet 1 Condenser temperature Condenser temperature NTC 2 4 20mA 8 4 20mA 0 5V 4 NTC HT 4 20mA NTC PT1000 5 4 20mA 0 1V 0 10V 6 4 20mA 0 1V 7 NTC HT 4 20mA NTC DIGITAL OUTPUTS N pCO2 pCO3 MEDIUM _ Master Address 1 Slave addresses 2 3 4 Master Address 1 Generic L tze Generic Bitzer _ Relay 1 Relay 1 Relay 2 Relay 2 NOS CirulaionPum Circulation Pump Fan 1 Liquid Solenoid Liquid Solenoid Antifreeze Heater Antifreeze Heater Relay 3 Relay 3 C General Alarm General Alarm Liquid inj Econ Oil Cooler Liquid inj Econ Oil Cooler Line Contactor Line Contactor Triangle Contactor Triangle Contactor PW2 Star Contactor Star Contactor
48. an be ignored to enable the driver to control the valve otherwise the driver would keep the valve shut Cod 030221296 Rel 1 4 11 09 08 28 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL WARNING deleting the alarms means ignoring them and consequently it is recommended to carefully check that the system is not damaged or malfunctioning or becomes unreliable e g if recharge battery is signalled it probably means that the battery is not charged or is not connected etc Consequently in the event of a blackout it may not be able to close the valve The valve would thus remain open when the installation starts again If none of the three above alarms is present the screen changes over to the next screen Driver 1 status No fault 11 Unit On Off There two power up and power down modes for the machine 1 Power up and power down of System 2 Power up and power down of Circuit The unit status can be controlled from the keypad digital input can be enabled supervisor can be enabled The power up power down operation with the ON OFF key on the keyboard has absolute priority When this key is pressed the green LED ON or OFF near the key will indicate the current status The machine can be powered up or down from the supervisor and or the digital input only if it was powered up from the keyboard Any power down from the supervisor or digital input will be signalled by the flashing of
49. aster card also applies to the slave cards The following table shows examples of the configuration of the dedicated digital outputs for the different power stages entered The effective status of the digital output is indicated The relation between the data in the table and the values set on the display Closed ON Open OFF Default configuration Compressor behaviour Relay 1 Relay 2 Power reduction CLOSED CLOSED Power stand by OPEN CLOSED Power increase OPEN OPEN The power stand by configuration is taken on by the outputs when no variation of input power is requested or if the maximum minimum compressor power is reached or because the water temperature measured by the probe located at evaporator outlet is inside the neutral control zone For compressor charging discharging the digital outputs of the pCO card are commanded alternately according to the stand by and charge discharge configuration causing the dedicated relay to pulse 13 5 Continuous capacity control with control at outlet Temperature control with compressors on continuous capacity control can occur only if control at outlet is selected according to the temperature values measured by the probe located at evaporator outlet To that end further configuration parameters are input They are specific for the particular type of compressor and are added to those previously mentioned in the description of the special type of control Employed Parameters Neutral z
50. case of loss of power and minimum on off times And more than this 22 1 1 Zone A e Above the maximum condensation limit max c The compressor is stopped immediately 22 1 2 ZoneB The maximum capacity of the compressor is limited to 75 and this condition is allowed for a maximum of one minute if after one minute the pressure level is not yet within the polygon the compressor is stopped immediately 22 1 3 Zone E NORMAL WORKING The maximum capacity of the compressor is unlimited available up to 100 but this condition is allowed for a maximum of one minute if after one minute the pressure level is not yet within the polygon the compressor is stopped immediately START UP The compressor is switch on with the power to 25 for 10s in order then passing to 50 and remains in this state for any thermostatic demand In this zone the compressor can remain active if after 70s min difference HP LP is greater then 1 bar and if after 370s the same difference is greater then 3 bars If one of these conditions doesn t respect the compressor is switched off then it is turned on when protection times expired This last procedure is repeated for 3 attempts The compressor is stopped if after third attempts it stills into zone F During the compressor restart the unit status present in the main mask will display RESTART This type of protection is active when the compressor in same starting is not entered in zone C 22 1 4 ZoneC e
51. cription of operation Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL Free Cooling control makes it possible to exploit the temperature conditions of external air to facilitate cooling use water To this end a heat exchanger is supplied If necessary a certain quantity of water is returned to this exchanger by the system deviated via an appropriately commanded valve The favourable conditions of outside air cause the water to cool beforehand and therefore activation of the cooling devices is delayed Free Cooling is available in the air water unit in the internal Free Cooling mode only i e with the Free Cooling battery housed inside the machine near the condensation battery ies with which its shares control of the condensation fan s pC03 pCO oU pCOC de de ui BATTERIA DI COND ENSAZIONE BATTERIA DI CONDENSAZIONE 21 2 Free Coolingactivation condition te BATTERIA DI FREE COOLING z dee EV AP ORA TORE The entire Free Cooling procedure is based on a relationship between the temperature value measured by the external temperature probe and the temperature value measured by the temperature probe located at the input of the Free Cooling heat exchanger and the set Free Cooling delta External T lt Free Cooling Input T Min Delta Freecooling If this condition is true the freecooling function will be enabled by activating deactivating the dedicated devices Cod 0
52. ction from digital input sane in D OUT 29 SummerWinter operation D OUT 30 Selection of condensation withinverter D NOU Ia X Selcooing heaing D NOT 3 Jj Restaams O D OUT 45 Genesalam D OUT 446 Ant feezeaam ou 4 c Compressor thermal overload aam 0 OUT Evaporator flow switch alarm So oo a lt lt 1 D OUT 50 Highpressuealamnfrompressureswich D OU 5 OUegdapm D OUT 52 Lowpressuealarm from pressure switch D OI 53 High pressure alarm fromtransducer_ D OUT 5 Seriousalarmfromdigitalimput D OU 55 Fanithemalcutoualam o ou il s _____ ran2hemacsotaam 5 OUT Evaporator pump thermal cutout alarm oe a I I I O DL OU 59 Blaye 1 Offline alarm O DL OU Blaye 2 Offline alarm DL OU 60 9 SlavesOffinealam D OUT 62 Alam Probet failed or not connected D OUT 6 J Alrm Probe2faledornotconected D OUT aw AamrProbe3faledornotconnected D OUT 65 AlrmmrProbe4faledornotconeced D OUT 66 Alam Probesfailedornoteonneeted D OUT 6 AlmProbeGfaledornotconected D OUT 6 J Alm Probe7faledornotconected D OUT 69 Alrm Probe8falledornotconeced D OUT 7 Condenser pump
53. des of the set point In units with inlet control and proportional band the freecooling control set point will use an offset from the compressor control set point to compensate for the presence of the evaporator coil Free Cooling Set point Compressors Set point Offset Banda Regolazione Compressori Setpoint Compressori Ti n Banda Regolazione Free Cooling Setpoint Free Cooling T Out Offset Setpoint Free Cooling The proportional control band will be equally distributed at the sides of the set point In the Free Cooling control band the activation thresholds for dedicated devices e g valves and fans or speed variators will be calculated in different ways according to the type of selection As the fans and or speed variators are shared by Free Cooling control and condensation control if one or more compressors in a given refrigerating circuit is are enabled priority will be given to condensation control to protect the circuit itself The Free Cooling valve will in any event be maintained fully open to provide as high as possible a thermal yield even at minimum ventilating capacity To optimise Free Cooling performance during the machine start transients and in steady state operating situations a by pass time is applied for thermostatic control of the compressors The purpose of this time is to delay the activation of the compressors in order to give Free Cooling sufficient time to reach the steady state conditions and take t
54. duty hours alarm D OUT 71 Compressor duty hours alarm D OUT 72 Condenser pump thermal cutout alarm D o 73 Clock alarm DL OU 74 Phasemonitoralam our Low pressure alam from transducer OUT High voltage alarm see iii D OU 78 Evaporator pump duty hours alarm D OUT 79 Operationlimitexceedialam______ D OU e X fHighdelivrytemperauealam D OUT 8 j Pressure differential alarm D OU 8 J J Driveriprobeaam__ D OU e 9 Aam drveiEEPROMemr D OUT 68 Alarm drveristeppedmotorvalveeror________ D OUT 86 J Driverthighpressurealam MOP D OUT 8 Driver1 low pressure alarm LOP D OUT e J Drvefilowsupeheatalrm D OUT 8 Alrm valvenotshutafterdrveriblack out D OUT 90 river thigh intake temperature alarm D OU 92 fAlmrdrver2EEPROMemr D OUT a X Alarm drver2steppedmotorvaveeror D OU 94 Drver2probealam D OUT 95 Dfiver2highpressurealam MOP D OUT 96 Drvr2lowpresuealrm LOP D OUT 97 J Drve 2lowsupeheatalarm D OUT 98 Alam valvenotshutafterdrver2black out D OUT 99 Diver 2 high intake temperature alarm D OUT 10 Standby dueto eeprom or open valve error driver4 D OUT
55. e A ARAS 38 17 SOLENOID VALVE MANAGEMENT lada a qe gob te sea RR e ER DE es dou de Pa nic are aria 39 I8 PUMPS DOWN tulle RO RITRARRE mn 39 19 CONDENSATION CONTROL Gita dle iii deiode a e e ne RC e See ak Ee 40 19 1 ON OFF CONDENSER CONTROL LINKED TO COMPRESSOR OPERATION titt tet tcc a ac tto lnc ctt 40 19 2 ON OFF CONDENSER CONTROL LINKED TO THE PRESSURE OR TEMPERATURE SENSOR sees 40 19 3 MODULATING CONDENSER CONTROL LINKED TO THE PRESSURE OR TEMPERATURE SENSOR eee 40 194 ENEE 40 20 DEFROSTING CONTROL FOR WATER AIR MACHINES eee ee ee eee rh 41 201 TRES RE NEE 41 202 EE 41 20 95 DEFROSTING A CIRCUIT WITELTIME TEMPERATURE CONTROL 22 tni patto daten o t ln onerat 41 20 4 DEFROSTING A CIRCUIT WITH TIME PRESSURE SWITCHES CONTROL 41 205 OPERATION OF FANS DURING THE DEFROSTING STAGE ut eii 41 21 22 23 24 25 FREE COOLING CONTROL 4535 a ode Rp I p e gode A EGA wc ou e EES SORES oue Ge iu 42 2L2 FREE COOLING ACTIVATION CONDITION storielle iene dii le 42 219 EREE COOLING DEER 43 21 4 FREECOOLINGDISABENGCONBITION Sella aa 44 29 FREECOOLHNGONOFFVANVE leads 44 21 6 FREE COOLING ON OFF VALVE WITH STEPPED CONDENSATION criar 45 21 7 FREE COOLING ON OFF VALVE WITH INVERTER CONTROLLED CONDENSATION iii 45 28 JDIDVOELEBEECODHNGONJOEIEVAEVE EE 46 21 9 0 10 VOLT FREE COOLING ON OFF VALVE WITH STEPPED CONDENSATION NENNEN 46 21 10 0 10 VOLT FREE COOLIN
56. e number of steps on will gradually be reduced in the case of compressors with continuous capacity control the unload will be managed with impulses lasting equal the minimum set time There is a settable differential to return from the forced capacity control condition expressed as a percentage of the alarm differential The return of the current to values below the alarm threshold and in any case within the set differential will not cause any variation to the capacity of the compressor The activation of a further forced capacity control function due to pressure or temperature will be managed by assigning higher priority to the function that involves a greater decrease in compressor capacity The duration of the current measured above the alarm threshold for a continuous time that exceeds the set time will involve the activation of the corresponding high current alarm with the immediate shutdown of the compressor and the need for manual reset by the user 16 1 3 Compressors with stepped capacity control For compressors with stepped capacity control forced capacity control means that the compressor has to operate at minimum or maximum power according to selection 16 1 4 Compressors with continuous capacity control For compressors with continuous capacity control forced capacity control means that the compressor has to operate in continuous charging or discharging mode according to selection Cod 030221296 Rel 1 4 11 09 08 38 Standard C
57. e valve or fans will be activated in the second half of the control differential through the effect of the integrating control Their activation will be tied to the set integrating constant the slower it is the greater the value attributed to the specific parameter The amplitude of the valve control step will be 5 50 of the said control differential The amplitude of the fan control steps will be calculated according to the following relation Step amplitude Free Cooling Differential Number of Master fans X number of cards It is assumed that all the circuits controlled by the pCO cards making up the system are equivalent and that the number of controlled devices is the same 21 7 Free CoolingON OFF valve with inverter controlled condensation 21 7 1 Proportional control ie Differenziale Free Cooling gt Valvola ON OFF Rampa 0 10V Free Cooling Inverter 10 Volt 5 0 amp eip int Pree Coole Temperatura Uscita Evaporatore The ON OFF valve activation step will in any case be positioned in the first part of the control differential and will have an amplitude of 5 0 of the said differential The proportional ramp for piloting the analogue control output of the condensation inverter will be calculated on the entire control differential If necessary Value 0 10 Volt can be further limited downward according to the minimum output voltage value set on the screen All proportional outputs relating to the different units of the system
58. eecooling differential The step amplitude is fixed at 5 0 of the Free Cooling control differential Cod 030221296 Rel 1 4 11 09 08 44 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 21 6 Free CoolingON OFF valve with stepped condensation 21 6 1 Proportional control Here is an example of Free Cooling control with ON OFF valve and three condensation steps lt Differenziale Free Cooling gt Valvola ON OFF Free Cooling Setpoint Free Cooling Temperatura Uscita Evaporatore The ON OFF valve activation step will in any case be positioned in the first part of the control differential and will have an amplitude of 5 0 of the said differential The activation steps of the condensation fans will be positioned proportionally inside the Free Cooling control differential To calculate the amplitude of each step use the following relation Step amplitude Free Cooling Differential Number of Master fans X number of cards It is assumed that all the circuits controlled by the pCO cards making up the system are equivalent and that the number of controlled devices is the same 21 6 2 Proportional integral control Here is an example of Free Cooling control with ON OFF valve and three condensation steps e Differenziale Free Cooling gt Differenziale Free Cooling Valvola ON OFF D Free Cooling Setpoint Free Cooling Temperatura Uscita Evaporatore The devices whether they ar
59. een 2 Enter the correct password 3 Goto screen Pc pressing the down arrow repeatedly 4 Select N under item Show language screen at start up In any case you can change the language in use at any time To do this all it takes is to go to the third screen Ak in the maintenance menu 6 Selecting the unit of measure The unit can be configured for operation with different units of measure for the temperature and pressure depending on the target market The options are metric C Bar or imperial F Psi To change the setting proceed as follows 1 Press the PROG PRG button and access PO screen 2 enter the correct password 3 goto screen Pm pressing the down arrow repeatedly 4 choose METRIC or IMPERIAL for the item Type of unit of measure After the selection has been made all the parameters are converted into the new unit of measure Cod 030221296 Rel 1 4 11 09 08 12 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 7 List of inputs outputs Inputs and outputs are listed below based on unit type A number has been associated with each type of machine This number is the program s main parameter because it identifies the inputs and outputs configuration Using this list of inputs and outputs select the number you require from the numbers associated in the program configuration screens AIR WATER UNIT WITH MAX 4 SCREW COMPRESSORS UP TO
60. ensation temperature Integral control time during the protection stage for high condensation pressure HiTcond When this parameter diminishes the control becomes faster Levels close to 5 0 seconds are advised A level of 0 zero disables the control e Dynamic proportional control This function allows the driver to change the proportional PID gain depending on the actual circuit capacity In the case of valves that are particularly large and or circuits with the possibility of working at low load steps below 50 this function allows for the automatic reduction of the gain in proportion to the low potential Use in the case of low potential the valve seems to react too quickly violently causing hunting in the evaporation pressure and or superheat This is a particular function to activate so it will only show one field 10 2 Special go ahead function Driver 1 status Valve open restart Go ahead N There are three alarm conditions which prevent the driver from performing normal control one of these is shown above e an open valve gt during the last blackout the valve was not shut completely e battery charge gt the battery is not operating correctly or it is discharged or disconnected e eeprom restart gt malfunctioning eeprom When one of these conditions is active the following alarm appears ALO86 Driverl Waiting for eeprom batt charged lor open valve error With the Ignore function these alarms c
61. ent and time based logs these data are not overwritten when the memory is full e You have the option of choosing the values to be saved at any time as well as the method used to save them Using the WinLOAD utility program you can define the values to be saved and the method used to save them with the aid of a practical Wizard WinLOAD does not need application software files as it can procure all the information required directly from the pCO board s resident application software e 1MB of dedicated FLASH memory With this system data are saved to the 1MB FLASH memory included in the memory expansion module code PCO200MEMO for pCO2 By way of example 1MB of memory can hold 5 000 alarm events with 5 values for each alarm and 6 months of recording 2 values for instance temperature and pressure saved every 5 minutes e Option of defining up to 7 different log configurations Usually each controller will have one alarm log and one log for control values temperature humidity pressure configured in addition to a number of log logs e Stored data can be consulted either via the separate or built in LCD terminal or via a connected PC e X Black box operating mode The memory expansion module containing the logs can be removed from the controlled unit s pCO and inserted in another pCO via which the stored data can be consulted The host pCO does not need to contain the same software as the original e Stored data reliability Data a
62. er 2 LAN disconnected driver 2 poo Manual Ms t SIv Setup incomplete Z a n o OoOo Mst Slv Cod 030221296 Rel 1 4 11 09 08 53 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 24 Alarmlog The alarm log can store the standard chiller s operating state when alarms are generated or at particular times Each record represents an event that can be displayed from the list of all the events available in tte memory The log is used to resolve problems and faults as it represents a snapshot of the installation at the moment the alarm was activated and may suggest the possible causes and solutions to the faults There are two kinds of log in the program the STANDARD log and ADVANCED log 24 1 Standardlog The pCO boards considerable buffer space means events can be saved in the STANDARD log which is always available on the various boards If there is no clock card optional extra on pCO1 built in feature on pCO2 and pCO3 the STANDARD log just gives the alarm code The maximum number of events that can be logged is 100 Once the hundredth alarm is reached i e the last available slot in the memory is taken the oldest alarm 00 is erased as it is overwritten with the next alarm and so on for subsequent events Logged events cannot be deleted by the user unless installing factory settings The STANDARD log screen can be called up by pressing the MAINTENANCE key and looks like this Alarms hi
63. essore a vite Generico Bitzer con driver CAREL DESCRIPTION OF PARAMETER SCREEN MASTER FACTORY USER RANGE UNIT SLAVE VALUE VALUE MEASURE Dyraric proportional enabing aco EO L ISS S S o 0 99 Integral time for high temperature condensation Fr MS Jo SC Seconds TIMES gt brr lt EI Iii Delayed start due to evaporator flow switchalarm TO MS P 15 IDCs seconds e AAA alarm Delayed start due to condenserflowswithalarm n CT SH 09T seconds p ELO cs alarm Delayed start due to low pressure alarm 8 ME 40 0 99 seconds Delayed steady state operation due to low pressure alarm T2 M S 0 0 99 seconds Delayed start due to oil differential alam TB MS 120 0 999 f seconds Delayed steady state operation due to oil differential alarm T3 MS 1 0 9099 seconds High current alarm activation delay from compressor stat T8 MS tw 0 999 seconds High current alarm delay fromthresholdexceeded T8 Ms 30 J 0 999 kseconds Timebetweenstar line LD Ms 2 J 0 99 X T 100seconds _Startime HS X0 0 99 100 seconds Delta startime TT MR J 0 9 100 seconds Compressor minimum ON time T5 MS LI 0 999 seconds Compressor minimum OFF time T5 MS XA J 0 999 seconds Time between power ups of different compresss
64. ferent from zero the meter for the extra steps provides is reset and if the fault reappears others will be provided again 30 greater than the maximum steps Movement Current Stationary Current Step Frequency Duty Cycle Report on maximum gear Indicate the maximum time percentage based on a second where the valve can be running to avoid superheat of some motors EEV steps in standby Represents the number of steps that the valve maintains during the adjustment pauses unit at OFF By selecting a level greater than zero the valve will remain partially open If a solenoid valve is installed before the expansion valve this level can be increased e g 25 of the maximum steps to minimise the risks of blocking the valve due to ice dirt wear Pressure sensor limits deafault 1 9 3 barg Range of an adjustment sensor for overheating connected to the EVD ALARMS DELAY Low Superheat Default 120 S A zero level deactivates the alarm High Superheat Default 20 Min A zero level deactivates the alarm LOP default 120 s Delay alarm for evaporation low pressure A zero level deactivates the alarm MOP default 0 s Delay alarm for evaporation high pressure A zero level deactivates the alarm 10 1 2 BRANCH autosetup Start up opening percentage Insert the ratio between the circuit potential and that of the valve considering the circuit at 100 The percentage is always lower than or equal to 100 the valve will
65. first activation step of the condensation fans In this way when the first fan is enabled the valve will be completely open and therefore water flow in the Free Cooling exchanger will be at maximum level The activation steps of the condensation fans will be positioned proportionally inside the Free Cooling control differential To calculate the amplitude of each step use the following relation Step amplitude Free Cooling Differential Number of Master fans X number of cards It is assumed that all the circuits controlled by the pCO cards making up the system are equivalent and that the number of controlled devices is the same 21 9 2 Proportional integral control Differenziale Free Cooling E i Differenziale Free Cooling i 2 i A 2 RR Lo 10 Volt Valvola 0 10V Free Cooling Setpoint Free Cooling Temperatura Uscita Evaporatore The devices whether they are valve or fans will be activated in the second half of the control differential through the effect of the integrating control Their activation will be tied to the set integrating constant the slower it is the greater the value attributed to the specific parameter The proportional control ramp of the Free Cooling valve will be calculated inside the first activation step of the fans In this way when the first fan is enabled the valve will be completely open and therefore water flow in the Free Cooling battery exchanger will be at maximum level The activati
66. gramma di applicazione Condensaz Bar max C 44d 444 Evaporaz Bar max O Cod 030221296 Rel 1 4 11 09 08 48 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL For each refrigerant the polygon changes shape according to the following levels in the table Absolute pressures Polygon R22 R134a ECO R407C points With or without ECO With or without ECO With or without ECO to po tc pc to po Tc pc to po tc pc 1 12 5 7 3 60 0 24528 E250 Be Be e 20500 OO evo 2253 2 10 0 35 60 0 243 130 18 60 0 168 8 0 959 E5008 258 3 25 000 EOD E550 Seet ESI5 008 on E5900 SIE 15 08 2 00 55 00 224 4 15 0 3 0 20 0 9 1 Elo Ros R2008 Wee 15 0 26 200 88 5 3 0 45 20 0 9 1 0 0 P20 200 857 0 0 46 200 88 6 12 5 Todi E525 Sand Kos 2 529 1353009 E559 12 5 TOMI 92 528 SE 7 150 79 340 1928 En KU bomen Boa 0E PZB FOO fia 8 en RE poo 580 EODEM ES ACHEN 10 24 EI ES Kreien loss 9 Wes BEE SOLO 22 508 F200 Esch MEDIO ESCHER EHE E522 MOUSE 253 10 15 0 7 9 60 0 2130 Ren ESA POLO Me Si Ia Eco AGUDA 253 max c 60 0 24 3 650 18 9 60 0 25 3 maxo 17 5 8 5 20 0 57 17 5 8 2 22 1 Protection Apart from the standard protection with the high and low pressure switches the heat windings the oil differential pressure switch and the Bitzer management keeps the compressor away from dangerous pressure conditions Furthermore the Bitzer management controls the frequency of the compressor thrusts including in the
67. he machine s yield to nominal value Only after this time has elapsed and with the main thermostat dissatisfied the compressors are commanded to operate If time is set to 0 the function will be disabled While the unit is operating the same parameter is used by Free Cooling control to reassess the machine s working conditions according to the value measured by the external temperature probe A further temperature delta should be set This identifies a second threshold below which the yield of the Free Cooling battery is so high that it can fully satisfy the system s thermal load solely through combined operation of valve and fans If the compressors are ON the external temperature falls below maximum delta set according to the following relation External T Free Cooling Input T Free Cooling Maximum Delta and this condition continues for a continuous time period equal to the set by pass time for the compressors When this time has elapsed the compressors will be commanded to OFF followed by a changeover to pure Free Cooling operation to satisfy load requirements with minimum use of energy When the by pass time for thermostatic control of the compressors has again elapsed the requests will be re assessed An antifreeze threshold is specified It is based on the temperature value of external air to protect the heat exchanger when operating in a cold environment If the temperature of external air is lower than the set threshold the valve c
68. he menu and prog keys simultaneously on the terminal with 15 keys PRG in the terminals with 6 keys Once they have been pressed both the LED above the menu key and the one above the prog key should light up lighting up of LEDs on the PRG key in the terminals with 6 keys e Input the password using the arrow keys and press Enter in this way you enter the constructor configuration iManufacturer i Type in password 4 Erase memory VO Install global default values S Please wait i e press the enter key to position the cursor above the letter N and take it to S with the arrow keys The please wait words appear immediately The following screen will appear after a few seconds 4 DEFAULT STATUS 1 2 B27 die i Default complete gt Switch off unit Default in process gt to data confirm No unit 4 e wait for the defaults to have been installed in all the units then restart the units 5 Language option When the unit is powered up a screen appears by default where you can select the language to be used Italian English French German Spanish This mask stays active for 30 seconds When this time has elapsed the program automatically changes over to the main menu MO screen This function can be disabled How to disable it 1 Press the PROG PRG button and access PO scr
69. he EVD200 driver The parameters are divided into three different branches that can be accessed via the EVD menu e System parameters information on what is physically installed e Autosetup Standard information on the kind of unit e Advanced parameters parameters who should be changed by experts IMPORTANT in order for the unit to operate the parameters in the system parameter and autosetup branches should be inserted Otherwise an alarm will appear to indicate that the autosetup procedure has not occurred 10 1 1 BRANCH system parameter e XA Battery presence Indicate the presence of the battery connected to EVD e Valve type Insert the kind of electronic valve used a read only parameter will indicate the number of maximum regulation passes of the valve useful for identifying certain valve models should the trade name be changed Alco EX5 Alco EX6 Alco EX7 Alco EX8 SPORLAND 0 5 20tons SPORLAND 25 20tons SPORLAND 50 250tons CAREL E2V P CAREL E2V DANFOSS ETS 25 50 DANFOSS ETS 100 DANFOSS ETS 250 400 CUSTOM An incorrect choice of valve or configuration of the CUSTOM valve can damage the hardware of the valve itself e X Refrigerant Select the kind of refrigerant used R22 R134A R404A R407C R410A R507C R290 R600 R600A R717 R744 R728 R1270 Cod 030221296 Rel 1 4 11 09 08 25 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL CUSTOM VALVE CONFIGURATION If a C
70. he slower the system s response Cod 030221296 Rel 1 4 11 09 08 47 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 22 Control algorithm for Bitzer screw compressors Carel developed a second Algorithm according to the Bitzer specifications to manage and protect their compressors By setting the Compressor Type parameter to Bitzer Steps or Bitzer Stepless the compressor s control algorithm is automatically set according to their Specifications With this kind of compressor it is best to use hardware with SSR outlets to guarantee a long control life because the CR4 valve switchings in the Steps and CR3 and CRA in the Stepless are very high In this case the hardware codes become PCO1004CMO PCO3002AMO or PCO3002BM0 and for the connection table chpt 7 see the Bitzer column The Bitzer management is integrated into the software application and keeps the suction and outlet pressure conditions under control optimising the compressor fridge capacity both via the management of the control valves in step mode and in continuous control mode On the basis of the refrigerant selected via the Refrigerant parameter the Bitzer management considers the compressor s application limits that is the enveloping of the pressures according to the Bitzer specifications With this compressor only the R407c R22 R134a refrigerants can be selected This enveloping of the application limits Dia
71. hiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 17 Solenoid valve management Inputs used e Compressor delivery temperature Parameters used e Solenoid valve activation threshold e Solenoid valve differential Outputs used e Economizer solenoid valve oil cooler liquid injection 17 1 1 Description of operation A digital output is provided for controlling an economizer solenoid valve oil cooler and liquid injection Activation depends on the compressor discharge temperature read by the probe as shown in the following graph __ 4 1 0 Temperatura mandata Soglia Allarme compressore _ Mandata Soglia attivazione 2 elettrovalvola Differenziale Differenziale 18 Pump down Inputs used e low Pressure Pressure switch Parameters used e Enable pump down e Pump down maximum duration Outputs used e Liquid Solenoid e Windings for compressor Line Delta Star e All compressor capacity control relays 18 1 1 Description of operation If enabled pump down occurs by the thermostat disabling the compressor The duration of the function can be set and ends after a maximum time or if the low pressure switch is activated If any alarm powers down the machine or even just the compressor the pump down finishes immediately The activation of the pump down function operates the compressor in forced capacity control mode for compressors with stepped capacity control the compress
72. imited to 25 for 10 seconds After 10 seconds the compressor is controlled according to the enveloping of the application limits and depending on the requests made 22 2 1 Part winding The part winding start up is handled directly by Macroblocco in line with Bitzer specifications 22 3 Capacity control Via the Compressor Type parameter the kind of capacity control can be selected that is stepped if Bitzer Steps or modulating if set at Bitzer Stepless 22 3 1 Step control By choosing Bitzer Steps the compressor capacity varies between 0 compressor off 25 50 75 and 100 maximum load depending on the requests made Under every kind of condition the maximum capacity is limited according to application enveloping even in the case where 100 is requested There is no delay in the stepped control on the capacity change 22 3 2 Stepless control By choosing Bitzer Stepless the compressor capacity varies between 0 compressor off and is modulated from 25 to 100 full load depending on the requests made Under every kind of condition the maximum capacity is limited according to application enveloping even in the case where 100 is requested In all condition the maximum cooling capacity is limited according to the envelop application limits even in case of cooling demand is requiring 100 22 3 3 Economiser and liquid injection The economiser or liquid injection valve is controlled by the relative set
73. input Up M Pep 41 Prop PropHnt KEE P5 TM Integration time ________ 0 99 seconds 5 50 99 9999 NN Control at output winter forced power down Ps M a 999999 REEL Neutral zone with modulating capacity control P7 EMS GG Delayed power up between pump and compressors PBT MS agan Delayed power down of main pump POM nm seconds Cod 030221296 Rel 1 4 11 09 08 19 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL DESCRIPTION OF PARAMETER SCREEN MASTER FACTORY USER RANGE UNIT SLAVE VALUE VALUE MEASURE MENT Na Enable remote On Off N po Type of remote on off from master On Off Unit On Off unit On Off circuit A pas Enable On Off from supervisor PI Aamrelaylogo P Enable summer winter selection from digital input Pb Enable summer winter selection from supervisor Po Y Type offreecoolingcontrol Pd____ MS HE 3 ERE 5 peo 7 Pe Fre Mm o Mm MS rop Freecooling offset on set point MS 50 Minimum freecooling delta Integral time for freecooling management Maximum freecooling delta MS 100 Freecooling differential Ms 40 Compressors delay in freecooling Pe MS 5 j 0 50 minutes Minimum threshold for freecooling valve stat TMS La om Maxmumthresholdforfreecoolngvaveopenng Pf SSO tO J o Defrosting starts Pg M S 2 0 99
74. ion top left corner scrolls up the screens in the same group if the cursor is in a setting field increases the value DOWN if the cursor is in the home position top left corner scrolls down the screens in the same group if the cursor is in a setting field decreases the value ENTER used to move the cursor from the home position top left corner to the setting fields in the setting fields confirms the set value and moves to the next parameter ec accesses the menu for selecting the group of parameters to be displayed modified access to the parameters is confirmed by pressing the Enter button PRG ENTER In pLAN applications with more than one board connected in the network and a shared user terminal switches the user terminal between the different units to display modify the parameters ESC ENTER Pressed at the same time for 20 seconds access the screen for switching the unit On Off 2 3 2 LCD terminal with 15 buttons Buton Description From any point of the user interface with the exception of the manufacturer group of parameters returns to the Main MENU menu screen MO displaying the unit status readings of the control probes and operating mode In the group of manufacturer parameters organised into nested sub groups returns to screen for selecting the parameters Goes to the first screen of Maintenance parameters A0 y MAINTENANCE The maintenance parameters are used to check the operating stat
75. is type of rotation operates only if the compressors have stepped capacity control Rotation free management e Power up C1 C2 C3 C4 e Power down C4 C3 C2 C1 FIFO rotation management the first compressor to be powered up is the first to be powered down e Power up C1 C2 C3 C4 e Power down C1 C2 C3 CA 15 Starting a single compressor 15 1 1 Description of operation The start up stages are described in the following graph Termost Liquid Solenoid Condenser fan Compressor Time on mask T7 From mask T7 it is possible to set the liquid solenoid and compressor start sequenze Pay attention that during this time the condenser fan are force to maximum speed 15 2 Starting the compressor motor 15 2 1 Delta Star starting Starting the motor is described in the following diagram Contattore Linea Contattore Stella Contattore Triangolo Ritardo Linea Stella I DI iS Ritardo Stella Triangolo Durata stella 15 2 2 Start up with Part Winding To start the compressor with part winding you must reset the star and delta star times setting the desired part winding time as the delta star time The outputs used are those of the line and triangle relays used respectively as part winding relays A and B Example Star line time 0 100s Star Time 0 100s Delta star time 100 100 s for a part winding time of 1 s 15 3 Compressor start restrictions There are two start restricting methods Both start the c
76. l value the alarm is signalled and the compressor is powered down according to the set delay 23 5 Antifreeze control Inputs used e Water temperature at evaporator outlet e Water temperature at condenser outlet Parameters used Enable evaporator outlet probe Enable condenser outlet probe Antifreeze heater setpoint Antifreeze heater differential Antifreeze alarm set point Antifreeze alarm set point Forcing of main pump due to antifreeze alarm utputs used Antifreeze heater General alarm relays All compressor outputs Main circulation pump Qe e e e e e Cod 030221296 Rel 1 4 11 09 08 51 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL Description of operation Every pCO unit is able to manage antifreeze control providing the water temperature probe at evaporator condenser outlet is connected and enabled according to the type of unit being controlled Antifreeze alarm Heater activation activation Antifreeze Antifreeze Heater Heater Setpoint differential gt setpoint lt differential gt Antifreeze control is always enabled even if the machine is OFF both in summer and winter operating modes For type 5 machines with reversing of the water circuit the antifreeze control always controls water temperature at evaporator outlet shifting control to the evaporator or condenser according to the operating mode summer winter The antifreeze alarm is a circuit alarm
77. lt in terminal management on pCO pCO only Management of ratiometric probes for pressure control on pCO pCO only EVD driver for piloting the EXV valve Multi language management Accessories Supervision with serial card RS485 CAREL or MODBUS protocol Supervision with LON serial board Compatible hardware pCO Medium pCO Medium and pCO Medium built in pCO Medium and pCO Medium built in Cod 030221296 Rel 1 4 11 09 08 7 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 2 The user terminal 2 1Type and operation Three different types of user terminal can be connected 1 PGDO semigraphic 6 buttons 4 rows 20 columns connection via telephone cable 2 LCD 15 buttons 4 rows 20 columns connection via telephone cable 3 Built in display 6 buttons 4 rows 20 columns only on pCO pCO board The user terminal whichever is used can perform all the operations allowed by the application program installed The user terminal displays the operating conditions of the unit The terminal can be used to modify all the unit operating parameters in real time The user terminal is not required for the correct operation of the unit 2 2 LEDs 2 2 1 PGDO terminal with 6 buttons d button Alarm Red On One or more alarm conditions have occurred Pre button Yellow On Unit on Flashing Unit off from supervisor or digital input All the LEDs not described and located undernea
78. noid e Windings for compressor Line Delta Star e All compressor capacity control relays Description of operation Activation of compressors is controlled by the water temperature measured by the probe located at evaporator inlet outlet No condensation fans are supplied because the condenser is water cooled Control of water water chiller unit with gas reversing heat pump Employed Inputs Water temperature at evaporator inlet Water temperature at evaporator outlet Water temperature at condenser inlet Water temperature at condenser outlet Employed Parameters Type of unit Total number of compressors Type of compressor capacity control Number of capacity control steps Control set point Control band Type of control inlet outlet Type of control at inlet proportional proportional integral Integration time if the proportional integral control is enabled Delayed starting of compressor capacity control stages Devices activation delay Refrigerating circuit reversing valve logic Outputs used Liquid Solenoid Windings for compressor Line Delta Star All compressor capacity control relays Refrigerating circuit reversing valve Description of operation Activation of compressors is controlled by the water temperature measured by the probe located at evaporator inlet outlet No condensation fans are supplied because the condenser is water cooled During the reversing of the refrigerator cycle i e at change
79. nsation temperature thus preventing any intervention by specific alarms A parameter is provided for selecting the compressor operating mode if forced capacity control is enabled The compressor can be taken to minimum maximum power according to the selection when e X High delivery temperature threshold exceeded e High pressure threshold exceeded e Antifreeze temperature threshold exceeded ll l Soglia temperatura Temperatura mandata lt Differenziale gt endo compressore Soglia pressione i i Differenziale gt sh d Pressione i condensazione condensazione Soglia temperatura Temperatura uscita antigelo Differenziale evaporatore 16 1 2 Description of the high current prevent function If the probe for measuring the current input is enabled and correctly configured forced capacity control is active for the high current condition EN DI SI Corrente lt Differenziale gt Soglia allarme percentuale i Alta corrente The high current is controlled on a settable alarm threshold and differential After a delay time from when compressor starts is the current measured exceeds the set alarm threshold a preventive action starts which involves gradually decreasing the capacity of the compressor The frequency of capacity reduction is equal to 1 3 of the set time T1 delay time for signalling the high current alarm in the case of compressors with stepped capacity control th
80. nt point 6 Outlet Temperature Outlet Temperature ien eter O Inlet 1 Outlet 1 Outlet 1 Outlet Temperature 4 Outlet Temperature 4 B5 Water temperature at Condenser Inlet Voltage Current External Get Voltage Current point 6 B7 High Pressure 2 High Pressure 2 Water temperature at Condenser Inlet 1 B8 Low Pressure 2 Low Pressure 2 Water temperature at Condenser Water temperature at Condenser Outlet 1 Outlet 1 NTC 2 4 20mA 8 4 20mA 0 5V 4 NTC HT 4 20mA NTC PT1000 5 4 20mA 0 1V 0 10V 6 4 20mA 0 1V 7 NTC HT 4 20mA NTC DIGITAL OUTPUTS N pCO2 pCO3 MEDIUM __ Master Address 1 Slave addresses 2 3 4 Bitzer Generic Bitzer Generic NO EvaporatorPump o 0 NO4 CondemerPump on en PW2 PW2 NO12 Star Contactor _ CR4 StarContactor CR4 io N NO13 pCO1 MEDIUM Master Address 1 Slave addresses 2 3 4 Generic Bitzer Bitzer Relay 1 CRI Relay 1 CRI Relay 2 CR2 Relay2 CR2 Evaporator Pump Condenser Pump Liquid Solenoid Liquid Solenoid Antifreeze Heater Antifreeze Heater Relay 3 Relay 3 General Alarm General Alarm Liquid inj Econ Oil Cooler Liquid inj Econ Oil Cooler Line Contactor W Line Contactor Triangle Contactor PW2 Triangle Contactor PW Star Contactor CR4 Star Contactor JJ Se ES z n2 O JJ mm ANALOGUE OUTPUTS N pCO2 pCO3 MEDIUM pCO1 MEDIUM _ Master
81. o Bitzer con driver CAREL e Kind of load step In this field one must insert the kind of capacity control used in the circuit The following choices are available None or steps compressor without load steps or with step load steps Slow continuation compressor with continuous modulation that is not particularly fast or with a considerable inertia speed e g case for screw compressors compressor with fast continuous modulation or with low inertia e g control with inverter or with speed case e Kind of evaporator Insert the kind of exchanger used as evaporator for the hot and or cold modes depending on the reversibility of the circuit there can be either one or two fields The following choices are available Metal sheets Plates pipes Fast Finned Slow Finned e Minimum saturation temperature LOP Separately set the limits lower than the evaporation temperature for the operational modes available Cold Hot Defrost The level to be inserted is not the calibration level of a low pressure switch but the minimum temperature of acceptable evaporation for the unit in continuous operation For example for water refrigerator without glycol with water outlet setpoint at 7 C a typical level is 2 C On the other hand for a heat pump the level could also be lower than 20 C depending on the use and project characteristics In the case of centralised unit e g supermarket and or multi evaporator where the behaviour of the valve does not infl
82. ompressor directly with the delta contactor by passing the star contactor There is a single enablement for both cases 1 Set high and low pressure thresholds exceeded 2 Set equalised pressure threshold exceeded equalised pressure is the average pressure between high and low pressure measured by the transducers Cod 030221296 Rel 1 4 11 09 08 37 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 16 Forced capacity control Inputs used e Water temperature at evaporator outlet e Compressor delivery temperature e Condensation pressure e Current Parameters used e X High delivery temperature prevention threshold e X High delivery temperature prevention differential e X High pressure prevention threshold e X High pressure prevention differential e Antifreeze temperature prevention threshold e Antifreeze temperature prevention differential e X Forced selection of compressor at minimum maximum power e X High current alarm threshold e X High current alarm percentage differential e Delay time to signal the high current alarm e Delay time to prevent high current from compressor start O utputs used e All compressor capacity control relays 16 1 1 Description of the condensing pressure antifreeze discharge temperature prevent function The compressor forced capacity control function prevents the unit from operating in abnormal conditions of pressure refrigerated water temperature or conde
83. on steps of the fans will be positioned proportionally inside the Free Cooling control differential To calculate the amplitude of each step use the following relation Step amplitude Free Cooling Differential Number of Master fans X number of cards It is assumed that all the circuits controlled by the pCO cards making up the system are equivalent and that the number of controlled devices is the same Cod 030221296 Rel 1 4 11 09 08 46 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 21 10 0 10 Volt Free Cooling valve with inverter controlled condensation 21 10 1 Proportional control S Differenziale Free Cooling gt Valvola 0 10V Rampa 0 10V Free Cooling Inverter 10 Volt Soglia massima Soglia minima Temperatura Uscita apertura valvola velocit inverter Evaporatore Setpoint Free Cooling The control proportional ramp of the Free Cooling valve will be calculated inside the area determined by the thresholds Control Set point Free Cooling Differential 2 Control Set point Free Cooling Differential 2 valve maximum opening Threshold The control proportional ramp of the condensation inverter will be calculated inside the area determined by the thresholds Control Set point Free Cooling Differential 2 inverter speed minimum Threshold Control Set point Free Cooling Differential 2 The start end points of the two control ramps can be modified at the user s discretion by
84. ondenser pump maintenance Compressor Maintenance Probe B1 failed or not connected Probe B2 failed or not connected Probe B3 failed or not connected Probe B4 failed or not connected Probe B5 failed or not connected Probe B6 failed or not connected Probe B7 failed or not connected Probe B8 failed or not connected Compressor out with operating limits Driver 1 probe fault Diver 1 EEPROM error Diver 1 stepped motor error Alarm driver 1 battery High pressure MOP driver 1 Low pressure LOP driver 1 Low super heat alarm driver 1 Valve not shut while driver 1 being disabled High super heat alarm driver 1 Standby due to EEPROM battery recharge or open valve error driver 1 LAN disconnected driver 1 Incomplete setup procedure on driver 1 Driver 2 probe fault Diver 2 EEPROM error Diver 2 stepped motor error Alarm driver 2 battery High pressure MOP driver 2 Low pressure LOP driver 2 Low super heat alarm driver 2 Valve not shut while driver 2 being disabled High super heat alarm driver 2 Standby due to EEPROM battery recharge or open valve error driver 2 LAN disconnected driver 2 Incomplete setup procedure on driver 2 Supervisor Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL The unit can be interfaced to a local or remote supervision remote assistance system Between the pCO card accessories an optional card is planned for serial communication via RS485 interf
85. one for continuous capacity control Impulse period Charging impulse minimum duration Charging impulse maximum duration Discharging impulse minimum duration Discharging impulse maximum duration Forced discharge period at compressor power up Capacity control relay forcing enabled when compressor is OFF Outputs used e Compressor capacity control Relay 1 e Compressor capacity control Relay 2 Banda di regolazione per controllo in uscita Decremento Incremento Spegnimento ode dul Accensione compressori potenza potenza compressori Temperatura Uscita Evaporatore A B C D E Soglia Setpoint Spegnimento Forzato Regolazione 13 5 1 Control of continuous capacity control according to points in the graph According to the set point values the control band with control at output and the neutral zone of compressors on continuous capacity control points C D and E are identified If the water temperature measured by the probe located at evaporator outlet exceeds point E Point E Control set point Control band 2 Dead zone 2 Then there will be a request for the compressor to start and an increase in capacity according to charge impulses of the maximum duration until reaching the maximum compressor load time If the water temperature measured by the probe located at evaporator outlet is below point B Point B Control set point Dead zone 2 Control band 2 In this case there is a request for the compressors to be discharged acc
86. ontrolling water flow inside the Free Cooling exchanger will be commanded to open and the main circulation pump will be enabled if OFF This pump moves the fluid and prevents the interior of the exchanger from freezing If the valve is a 0 10V type the degree of opening will depend on the unit s operating status e with the unit off the valve will open to 100 of capacity e with the unit on the valve will open to 10 of capacity If the valve is of the ON OFF type it will always open to maximum value irrespective of the unit s operating mode The entire procedure will finish as soon as the external air temperature reaches a fixed hysteresis of 1 0 C with respect to the set threshold Cod 030221296 Rel 1 4 11 09 08 43 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 21 4 Free Cooling disabling conditions There are two main causes of the closure of the Free Cooling valve the first depends on the external temperature conditions and the second on thermostatic demand The freecooling valve will be closed if the freecooling conditions are no longer present External T lt Free Cooling Input T Free Cooling Delta 1 5 C The Free Cooling valve will close if the Free Cooling thermostat is satisfied For system safety the reading of the water temperature probe a the evaporator outlet will be checked According to the set thresholds the following will be processed an antifreeze pre alarm which
87. or operates at the minimum maximum capacity for compressors with modulating capacity control the compressor operates in continuous unload load Cod 030221296 Rel 1 4 11 09 08 39 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 19 Condensation control Condensation can be performed in the following modes e ON OFF linked to compressor operation without pressure transducers e ON OFF or modulating linked to reading by the pressure transducer if the high pressure transducers were enabled e ON OFF or modulating linked to reading by the battery temperature probes if the battery temperature probes were enabled Employed Inputs e Condensing pressure probe e Condenser coil temperature probe Outputs used e Fani e Fan2 e Speed control for fans AOUT 1 Employed Parameters Selection of condensation control None pressure temperature Condensation set point Condensation band Number of fans Enable prevent function Prevent threshold Prevent differential Output voltage for inverter minimum speed Output voltage for inverter maximum speed Inverter speed up time 19 1 ON OFF condenser control linked to compressor operation Fan operation will solely depend on compressor operation Compressor OFF fan OFF Compressor ON fan ON 19 2 ON OFF condenser control linked to the pressure or temperature sensor Fan operation depends on compressor operation and on the value read by the pre
88. ording to the maximum duration impulses until compressor maximum discharging time is reached and until possible power down If the water temperature measured by the probe located at the evaporator outlet is between points D E B C Point D Control set point Dead zone Point C Control set point Then the power of the compressor will be increased reduced by impulses of variable duration according to the values calculated within the minimum and maximum limits set for an infinite time Cod 030221296 Rel 1 4 11 09 08 35 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 13 5 2 Power up of compressors temperature above point E The compressors are powered up in sequence at a rate calculated by the set time required to reach maximum power As there is no absolute measurement of the effective capacity when the compressor is started it performs a forced unload cycle for a set time unloader relays energised continuously according to the unload configuration Subsequently the compressor power will be increased by maximum duration impulses 13 5 3 Increase of compressor power When the maximum time limit for reaching maximum power is reached a forced charging cycle is commanded for a time of 20 of the set threshold then the compressor capacity control relays change to the power stand by configuration If the temperature remains in the power up zone beyond point E every ten minutes a forced charging cycle i
89. over from refrigeration to heating and vice versa the evaporator and condenser functions are exchanged In this mode the refrigerating circuit is reversed but the compressors are always controlled by the temperature at evaporator inlet outlet Cod 030221296 Rel 1 4 11 09 08 31 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL Control of water water chiller unit with water reversing heat pump Emploved Inputs Water temperature at evaporator inlet Water temperature at evaporator outlet Water temperature at condenser inlet Water temperature at condenser outlet Employed Parameters Type of unit Total number of compressors Type of compressor capacity control Number of capacity control steps Control set point Control band Type of control inlet outlet Type of control at inlet proportional proportional integral Integration time if the proportional integral control is enabled Delayed starting of compressor capacity control stages Devices activation delay Water circuit reversing valve logic Outputs used Liquid Solenoid Windings for compressor Line Delta Star All compressor capacity control relays Water circuit reversing valve Description of operation Activation of compressors is controlled by the water temperature measured by the probe located at evaporator inlet outlet There are no condensation fans because the condenser is cooled using water During the reversal
90. pening of the valve on activation of the driver circuit e Set superheat Superheat target level that the driver aims at Do not set levels that are too low less than 5 C or too close to the limit of low superheat a difference of at least 3 C Proportional gain Proportional gain of the PID control On increasing this parameter the valve s reaction speed increases above all with frequent variations of superheat e g fast capacity ramp or evaporator loading This parameter influences all the valve s movements not only those linked to the standard PID but also to the control of accessories low superheat high or low evaporation pressure e Integral time Integral time of PID control On the decreasing of this valve the driver increases the number of steps sends a command to the valve every second to achieve the setpoint High levels therefore reduce the integral action and slow down the valve movement Excessively low levels below 20s can create hunting to the system for excessive movements of the expansion valve The level 0 zero completely cancels the integral action e LOW superheat Limits of low superheat Below this level of superheat the driver sends a command to the expansion valve for a faster closure speed than normal in order to avoid liquid reflux In fact it represents an additional integral term to the PID control that intervenes below the threshold selected Do not set levels that are too close to the superheat
91. perature control will be available Control set point Employed Inputs e Digital input to enable second set point e Analogue input for remote set point variation e Supervisor serial network Employed Parameters Control set point Enable second set point from digital input Enable remote set point from analogue input Limits for calculating remote set point from analogue input Display set point used by the control Description of operation The temperature control irrespective of the type is based on the setting of two fundamental parameters set point and control band The control set point can be changed according to the operating requirements of the unit There are four different ways to change the control set point e Different from the screen accessing the special screen the user can set the value of the parameter directly e Different from the supervisor if a supervisory system is connected the cooling or heating set point can be modified by accessing the dedicated addresses e Different from digital input enabling the management of the secondary set point the set point defined on the dedicated screen will be replaced by the corresponding user parameter depending on the status of the digital input e Different from analogue input enabling the remote set point from analogue input 0 1V will activate the control set point compensation with a proportional value between the two limits for the conversion of the input signal
92. points and hysteresi Cod 030221296 Rel 1 4 11 09 08 50 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 23 Alarms Alarms are divided into three categories signal only alarms signal on the display buzzer alarm relay circuit alarms deactivate only the corresponding circuit signal on the display buzzer alarm relay serious alarms deactivate the entire system signal on the display buzzer alarm relay 23 1 Serious alarms No water flow alarm Serious alarm from digital input Phase monitor alarm Pump thermal cutout 23 2 Circuit alarms High pressure pressure switch alarm Low pressure alarm Compressor thermal overload alarm Oil differential alarm Fan thermal overload alarm Unit disconnected from network alarm Pressure differential alarm Evaporator antifreeze alarm High current alarm 23 3 Warning only alarms Unit maintenance alarm Compressor maintenance alarm Clock card faulty or disconnected alarm High voltage alarm 23 4 Pressure differential alarm management Inputs used e Low pressure transducer e X High pressure transducer Parameters used e Enable alarm e X Pressure differential set point e X Alarm activation delay Outputs used e General alarm relays e All compressor outputs 23 4 1 Description of operation The alarm is based on the differential between high and low pressure probe readings If this differential drops below the set differentia
93. pressore a vite Generico Bitzer con driver CAREL CHILLER UNIT HEAT PUMP WITH GAS REVERSING MACHINE TYPE 4 pCO1 MEDIUM Master Address 1 Slave addresses 2 3 4 Serious Alarm Serious Alarm Evaporator Flow switch Evaporator Flow switch remote ON OFF Evaporator Pump thermal Cutout Low Pressure Pressure switch Low Pressure Pressure switch Oil differential Oil Level Oil differential Oil Level Double Set point Evaporator Flow switch Evaporator Flow switch Enablable Enablable Summer Winter EEN High pressure pressure switch High pressure pressure switch Compressor Thermal cutout Compressor Thermal cutout pCO1 MEDIUM Master Address 1 Slave addresses 2 3 4 High Pressure High Pressure Low Pressure 3 Low Pressure 3 Voltage Current External Get Voltage Current point 6 Outlet Temperature Outlet Temperature Inlet 1 Outlet 1 Outlet 1 aie I Inlet 1 Water temperature at Condenser Outlet 1 Water temperature at Condenser Outlet 6 4 20mA 0 1V 7 NTC HT 4 20mA NTC pCO1 MEDIUM Master Address 1 Slave addresses 2 3 4 Generic Be Generic Bitzer Relay 2 CR2 Evaporator Pump e Condenser Pump Liquid Solenoid Antifreeze Heater Relay 3 General Alarm Liquid inj Econ Oil Cooler Line Contactor Triangle Contactor Star Contactor 4 way Valve ni CR3 EW PW2 CR4 pCO1 MEDIUM Master Address 1 Slave addresses 2 3 4
94. r refrigerating yield It is versatile because the electronic expansion valve makes it possible to serve refrigerating units with a lower refrigerating capacity and in operating conditions which may Go r differ considerably from each other probe Using an expansion valve entails the installation not only of the EVDriver and the expansion valve itself but also of a temperature sensor and a 5 pressure transducer both located on the refrigerating side at the end of the evaporator on the compressor s intake pipe Consult the following PEH diagram for a better understanding of the system s typical lay out The priorities to be considered for optimal control of the refrigerating system Evaporator obtaining a high constant refrigerating yield rather than very low stable superheating The heart of the control is a PID control with settable coefficients for superheating These are the additional controls LOW Low superheating with integral time and adjustable threshold LOP Low evaporation pressure operating in transients only with integral time and adjustable threshold MOP High evaporation pressure with integral time and adjustable threshold HiT cond High condensing pressure activated with condensing pressure probe read by the pCO with programmable integral time and threshold Compressor Motor connection 10 1 Driver parameters Below are shown the fundamental and most important parameters to operate t
95. re saved to a FLASH memory that does not need batteries which are liable to run down If previously stored data are not compatible with new software following an upgrade all data are erased you are prompted to confirm first 24 3 List of alarm log codes AL 001 Unit No 1 Offline AL 002 Unit No 2 Offline AL 003 Unit No 3 Offline AL 004 Unit no 4 Offline AL 011 Serious alarm from digital input AL 012 Phase monitor alarm AL 013 Evaporator flow switch alarm AL 014 Condenser flow switch alarm AL 015 Oil level alarm AL 016 High pressure alarm pressure switch AL 017 Low pressure alarm pressure switch AL 018 Evaporator Pump thermal Cutout Cod 030221296 Rel 1 4 11 09 08 54 AL 019 AL 020 AL 021 AL 022 AL 031 AL 032 AL 033 AL 034 AL 035 AL 036 AL 037 AL 041 AL 051 AL 052 AL 053 AL 060 AL 061 AL 062 AL 063 AL 064 AL 065 AL 066 AL 067 AL 090 AL 101 AL 102 AL 103 AL 104 AL 105 AL 106 AL 107 AL 108 AL 109 AL 114 AL 115 AL 116 AL 201 AL 202 AL 203 AL 204 AL 205 AL 206 AL 207 AL 208 AL 209 AL 214 AL 215 AL 216 25 Condenser Pump thermal cutout Compressor thermal cutout Condenser 1 Thermal cutout Condenser 2 Thermal cutout Antifreeze alarm Low pressure differential alarm High pressure alarm transducer Low pressure alarm transducer High delivery temperature alarm High voltage alarm High current alarm Alarm clock card failed or disconnected Evaporator pump maintenance C
96. ri Bo Percentage ratio between fridge power and driver power in chiller F function M S gt gt gt 0 0 99 9 Proportional gain in chiller function Integral time during chiller operation 0 999 seconds Superheat set point during chiller operation 2 0 50 0 Threshold for superheat protection during chiller operation 099 __ 0 0 99 9 ZI 0 999 Superheat set point during heat pump operation Threshold for superheat low protection during heat pump operation C C Percentage ratio between fridge power and driver power during heat pump operation Proportional gain during heat pump operation ge id i Percentage ratio between fridge power and driver power during defrosting operation ge C C Integral time during heat pump operation C i Proportional gain during defrosting operation E seconds e h i i J k Los Integral time during defrosting operation MS 0 0999 seconds Superheat set point during defrosting operation m 2 0 50 0 E i Threshold for low superheat protection during defrost operation m Leg Y Superheat dead band n 0 99 LC Derivative time n 0 99 9 TS Integral time for superheat low protection 0 030 0 Threshold Integral time for LOP protection during chiller operation 0 025 5 Threshold Integral time for LOP protection during chiller operation 025 5 Delay in MOP protection departure Cod 030221296 Rel 1 4 11 09 08 22 Standard Chiller HP modulare per compr
97. rmine the different activation thresholds the following relations must be applied Total number of control steps Total number of compressors Number of capacity control compressor steps Step proportional amplitude Proportional control band Total number of control steps Step activation thresholds Control set point Step proportional amplitude Step sequential number 1 2 3 Outlet temperature control Employed Inputs e Water temperature at evaporator outlet Employed Parameters e Type of unit e Total number of compressors e Type of compressor capacity control e Number of capacity control steps e Control set point e Control band for outlet control e Delayed starting of compressor capacity control stages e X Devices activation delay e Devices disablement delay e Summer limit of temperature at outlet powers down all compressors without observing the disabling time e Winter limit of temperature at outlet powers down all compressors without observing the disabling time Outputs used e Liquid Solenoid e Windings for compressor Line Delta Star e All compressor capacity control relays Richiesta di disinserimento Richiesta di inserimento dei compressori dei compressori Setpoint Banda neutra Temperatura in uscita Punto A Punto B A neutral temperature zone is identified based on the set set point and band values Temperature values between the set point and set point band A lt Temperature lt B
98. s e battery B3 temperature can be used as a pressure switch e high pressure B7 e Input for defrosting pressure switch 1 Employed Parameters Inputs used for defrosting Type of defrosting simultaneous separate independent Type of defrosting start and finish compressor behaviour defrosting start set point defrosting stop set point Defrosting delay time Maximum defrosting time Type of compressor operation during the refrigerating cycle reversing stage Drip off time Outputs used e Compressori e Cycle reversing solenoid valve 1 e Fan 20 1 Types of defrosting Simultaneous Only one circuit has to request entering the defrosting cycle for all circuits to forcibly enter defrosting Circuits which do not need to defrost temperature above defrosting stop set point stop and wait As soon as all circuits finish defrosting the compressors may restart on heat pump operation Separate The first pCO unit requesting defrosting begins to defrost the other units even if they request defrosting wait the heat pump continues to operate until the first one finishes defrosting All the units sequentially complete their defrosting cycle Independent The units can start defrosting at random independently of each other In this way there may be several machine starting to defrost simultaneously 20 2 Type of end and start defrost Defrosting can be managed either by the coil temperature probe or the high pressure probe the
99. s 2 3 4 Speed Controller Speed Controller Speed Controller Speed Controller Beg DOT MEDIUM Master Address 1 Slave addresses 2 3 4 High Pressure High Pressure Water temp at Evaporator Inlet Fan 1 Liquid Solenoid Antifreeze Heater Relay 3 C General Alarm Liquid inj Econ Oil Cooler Liquid inj Econ Oil Cooler Line Contactor Triangle Contactor PW i lr O ES HN Y EG Cod 030221296 Rel 1 4 11 09 08 13 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 7 2 CHILLER UNIT HEAT PUMP MACHINE TYPE 1 DIGITAL INPUTS N pCO2 pCO3 MEDIUM Master Address 1 Slave addresses2 34 Serious Alarm Pump Thermal cutout Dr Differential Oil Level Differential OilLevel D8 Double Setpoit y O 09 Fan 1 Thermal cutout rant Thermal cutout Do Summer Winter J ooo O EENEG a AA CA ANALOGUE INPUTS pCO2 pCO3 MEDIUM Master Address 1 Slave addresses 2 3 4 B Water temperature at Evaporator Inlet 1 Serious Alarm Evaporator Flow switch Remote ON OFF Pump Thermal cutout Low Pressure 2 Pressure switch Differential Oil Level Phase monitor Double Set point Fan 1 Thermal cutout Summer Winter Compressor Thermal cutout Master Address 1 High Pressure 9 Low Pressure 3 pCO1 MEDIUM Master Address 1 Differential Oil Level F
100. s commanded with a duration of 20 of the time required to reach the maximum set power In the case of multi compressor units the periodic forced charging cycle will be carried out by all powered up compressors which have reached maximum power 13 5 4 Modulated increase of power temperature in range between points D E The compressor s power is modulated in this temperature range by applying charging impulses of variable duration to the capacity control relays duration is calculated between the minimum and maximum values set according to the measured temperature values For multi compressor units modulated increase of power will occur simultaneously for all powered up compressors 13 5 5 X Operation of compressor in neutral zone temperature in range between points C D If the temperature value locates inside the neutral zone the capacity control relays of all powered up compressors change to the power stand by configuration thus maintaining the power level that had been reached 13 5 6 Modulated reduction of power temperature in range between points C B The compressor s power is modulated in this temperature range by applying discharging impulses of variable duration to the capacity control relays duration is calculated between the minimum and maximum values set according to the measured temperature values For multi compressor units modulated reduction of power will occur simultaneously for all powered up compressors 13 5 7 Power
101. s for the different power stages entered The effective status of the digital output is indicated The relation between the data in the table and the values set on the display Closed ON Open OFF Default configuration CLOSED OPEN OPEN OPEN OPEN CLOSED OPEN CLOSED OPEN OPEN OPEN OPEN Configuration example OPEN CLOSED CLOSED CLOSED CLOSED OPEN CLOSED OPEN CLOSED CLOSED CLOSED CLOSED Stepped capacity control times Delays are specified for capacity control management These delays can be set when the capacity controls are enabled Such delays indicate the minimum operating time of a compressor at a given power stage If the machine is enabled at maximum level request these delays prevent a changeover from power level 0 to maximum level Graph of times for capacity control in 4 steps 100 75 50 25 With Bitzer compressor the time T2 T3 T4 are force the follow value T2 The minimum value is force to 10 second T3 zero T4 zero The T1 time does not have restriction To have more flexible management of the unloader during the unit start up and the normal working condition it is possible to set a time mask Te starting from the pump on and after this the unit is in normal working mode If this time equal to zero then the management is disable During start up mode the time T1 T2 T3 mask T7 are
102. ses have to be unequivocal and correspond with the diagram shown above There are various means of assigning the pLAN address 3 1 1 PGDO Terminal To direct default level is 32 a PGDO terminal one has to 1 Provide the terminal with voltage 2 Press the Up Down ENTER buttons until a display address setting appears 3 Type in the numerical pLAN address with the Up and Down buttons then confirm by pressing Enter 4 The No link screen appears 5 Ifthe NO Link screen does not appear press Up Down ENTER again 6 Once the display address setting screen appears press Enter 3 times Once the adr Priv shard screen appears set the correct levels and confirm by typing in YES 3 1 2 pCO pCO addressing Here is a description of the operations necessary for addressing pLAN from the pCO pCO cards 1 Power down the pCO card and connect a LCD 4x20 PGDO terminal with the pLAN 0 address 2 Power up the pCO1 card by holding down the Alarm Up keys until a mask appears 3 When the pLAN Address screen is shown perform the indicated operations i e insert the numeric 1 2 3 or 4 pLAn address with the Up and Down keys and then confirm by pressing Enter 4 Power down the pCO card 5 If necessary assign the correct pLAN address to the external terminal if specified 6 Power up the pCO card 3 1 3 pCO addressing PCOI PCOT terminals and EVD 200 valve driver The pLAN addresses on these are set wi
103. ssure or temperature sensors according to a set point or to a band When the pressure temperature is lower than or equal to the set point all fans are OFF but when the pressure temperature rises to set point band all fans are ON 19 3 Modulating condenser control linked to the pressure or temperature sensor With this type of condensation the fans will be controlled through a 0 10 V analogue output in proportion to demand by the pressure temperature sensors If the lower limit of the ramp is greater than 0 V there will not be a proportional straight line but as in the first section of the graph it will be below the set point diff by one Step 10 Volt Pressione Tempetatura Soglia Soglia Condensazione Setpoint i Banda Regolazione ae i Prevenzione Allarme 19 4 Prevent function This function can be selected under the constructor password and is used to prevent circuits shutting down due to high pressure With the compressor ON when this threshold is reached the compressor is capacity control forced until pressure returns to below the set point of a settable differential With the compressor OFF when this threshold is reached the fans are capacity control forced until pressure returns to below the set point a settable differential Cod 030221296 Rel 1 4 11 09 08 40 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 20 Defrosting control for water air machines Employed Input
104. story A2 ALOOO 00 00 00 00 00 IIS 0004 0 Tour 000704 EP 000 0 LP DO 9 For each alarm the following data are stored relating to the standard chiller at the time of the alarm alarm code Time Date chronological number of the event 0 99 The chronological event number indicates the seniority of the event with respect to the 100 available storage slots The alarm with number 00 is the first to occur after the STANDARD logs are enabled and hence the oldest If you move the cursor onto the chronological number you can run through the alarm log from 0 to 99 using the arrow keys For instance if you are on position 00 pressing the down arrow will not take you anywhere If 15 alarms have been logged for instance and you are on position 014 pressing the up arrow will not take you anywhere 24 2 Advanced log Events are logged on the 1MB or 2MB memory expansion module which is a permanent appendix to the board Advantages and features are listed below e Event based log a typical event based log is the alarm log When an alarm occurs the alarm generated is stored along with significant data temperatures pressures setpoints etc e Time based log a typical event sic probably time based log is the temperatures pressure log Temperature and pressure values are stored at regular intervals e Log log this is the log of the last alarms temperatures pressures stored before a serious alarm Unlike data stored in the ev
105. t pump configuration is featured enables heating operation BLUE With the unit off if the chiller heat pump configuration is featured enables cooling operation on off B alarm a a Description Silicon rubber buttons Button ON OFF switches the unit on off ALARM displays the alarms mutes the buzzer and deletes the active alarms 3 UPARROW if the cursor is in the home position top left corner scrolls up the screens in the same group if the cursor is in a setting field increases the value 4 DOWN if the cursor is in the home position top left corner scrolls down the screens in the same group if the cursor is in a setting field decreases the ARROW value ENTER used to move the cursor from the home position top left corner to the setting fields in the setting fields confirms the set value and moves to the next parameter 2 3 3 Built in 6 button terminal ALARM ESC 000 M ooo rr Description ALARM displays the alarms mutes the buzzer and deletes the active alarms if the cursor is in the home position top left corner scrolls up the screens in the same group if the cursor is in a setting field increases the value DOWN if the cursor is in the home position top left corner scrolls down the screens in the same group if the cursor is in a setting field decreases the value ENTER used to move the cursor from the home position top left corner to the setting fields in the setting fields confirms the set val
106. th binary logic changing the position of a group of dip switches located at the back of the pCO PCOT terminals on the pCO2 cards and inside the EVD 200 electronic valve drivers with all the devices compulsorily powered down For further information consult the specific manual for the device In all the other screens in the program to display the address of the board that is currently connected press the printer button or Enter Prg depending on the terminal used Cod 030221296 Rel 1 4 11 09 08 11 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 4 Installation of default values When you have checked the connections between the cards and terminals power up the pCO card s When the machine is powered up the software automatically installs the default values selected by CAREL for all the chiller and driver configuration parameters This section tells you how to reset default values to return to the initial conditions Therefore this operation need not be carried out at the first power up The following procedure is used for resetting all the in plant configuration parameters selected by CAREL ATTENTION this procedure irreversibly cancels any programming done by the user As resetting the default values is an operation that concerns each pCO card if there are two or more cards repeat the operation for each card The procedure is identical for all the cards These are the steps e press t
107. th the remaining 4 buttons indicate that the instrument is powered Together with the backlighting of the display these will be switched off if no button is pressed on the keypad for 5 minutes 2 2 2 LCD terminal with 15 buttons Each button has a green LED indicating the specific group of parameters selected during the operations to display modify the operating parameters The silicone rubber buttons have three different coloured LEDs whose meaning is specified in the following table On Off button Green On Unit on Flashing Unit off from supervisor or digital input Alarm button Red On One or more alarm conditions have occurred Enter button On Instrument correctly powered 2 2 3 Built In terminal with 6 buttons Given the number of buttons and LEDs available these have general meanings as described below d button Alarm Dei On One or more alarm conditions have occurred I button Enter Yellow On Unit on Flashing Unit off from supervisor or digital input Prg button On Displaying modifying the operating parameters Esc button On Main menu parameters displayed Cod 030221296 Rel 1 4 11 09 08 8 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 2 3 Use of the buttons 2 3 1 PGDO terminal with 6 buttons Description ALARM displays the alarms mutes the buzzer and deletes the active alarms if the cursor is in the home posit
108. ue and moves to the next parameter PRG accesses the menu for selecting the group of parameters to be displayed modified access to the parameters is confirmed by pressing the Enter button PRG ENTER Temporary display of the board pLAN serial address ESC ENTER Pressed at the same time for 20 seconds access the screen for switching the unit On Off Cod 030221296 Rel 1 4 11 09 08 10 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 3 pLAN management between boards The pLAN network identifies a physical connection between the cards pCO1 pCO pCO and the external terminals pLAN p CO L ocal A rea N etwork The purpose of the pLAN network connection between the cards is to exchange variables among the cards with a logic decided by the program in order to make the cards work together functionally The variables exchanged among the cards have already been established by the program and likewise their direction of origin and destination Therefore the user does not have to set them but has only make the electrical connections The following is a layout of the pLAN network Sal evo oe Evo EFD2D0 E D0200 EYD200 E D 400 32 The main MO mask shows the address of the connected card in the bottom left hand corner With the terminal showing 32 it is possible to view all the boards without the need for other terminals 3 1 Howto assign the pLAN addresses The pLAN addres
109. uence the evaporation pressure being set a compressor pack set at 50 C function not operational e Maximum saturation temperature MOP Separately set the limits greater than the evaporation temperature for the operational modes available Cold Hot Defrost Once this threshold has been reached the expansion valve will start to modulate closing in order to stay below Obviously in these cases the superheat control will be abandoned the MOP work point normally helps maintain the superheat considerably above the set setpoint e Superheat high alarm threshold Default 20 C Insert the maximum superheat for the generation of the relative alarm delay set in the system branch This parameter shows a double field like the one in the advanced branch 10 1 Advanced BRANCH This branch allows for the configuration of all the expansion valve control parameters that is generally unnecessary For each parameter in this section two fields are shown The left hand field shows the level set by the AUTOSETUP procedure and cannot be changed since it is read only The right hand field can be changed by default equal to zero that means the use of the autosetup parameter and makes it possible to change the level of variation used by the control The description of the parameter can start with a prefix indicating on which operational mode it will be used CH COLD mode HP HOT mode DF DEFROST mode e EEV opening percentage Percentage of initial o
110. us of devices and the probes control maintenance calibrate the readings and run manual operations PRINTER Temporary display of the pLAN address of the current board INPUTS Goes to the first screen of l O parameters 10 d AND OUTPUTS The I O parameters display the status of the inputs and the outputs on the board Goes to the first screen of Clock parameters KO y CLOCK The Clock parameters are used to display set the operating parameters for the clock board and activate the time bands Cod 030221296 Rel 1 4 11 09 08 9 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL Button Description Goes to the first screen of Set point parameters S0 SET POINT The Set point parameters are used to display modify the unit working set point within the limits defined in the configuration Goes to the screen for entering the user password PO PROGRAM i i soc 9 user parameters are used to modify the unit operating mode Goes to the screen for entering the manufacturer password Z0 P i MENU PROG The manufacturer parameters are used to configure the unit in terms of the number and type of devices connected enable specific accessories or special functions In pLAN applications with more than one board connected in the network and a shared user terminal switches the INFO i user terminal between the different units to display modify the parameters SES With the unit off if the chiller hea
111. user can choose on the screen one of the two probes The compressor can have four different types of behaviour in connection with start end of defrosting This makes it possible to protect the compressor against sudden cycle reversing if necessary Times are not considered in these compressor power downs and power ups e None The refrigerating cycle is reversed at inlet outlet to from the defrosting cycle occurs with the compressor ON e Start of defrosting The compressor is powered down by the reversal of the refrigerating cycle only at the inlet of the defrosting cycle e End of Defrosting The compressor is powered down by the reversal of the refrigerating cycle only at the outlet from the defrosting cycle e Start end of defrosting The compressor is powered down by the reversal of the refrigerating cycle both at the inlet and outlet to from the defrosting cycle 20 3 Defrosting a circuit with time temperature control If the battery temperature pressure remains below Mis the defrosting start set point for a cumulative time equal to defrosting delay time the circuit in Set stop question enters a defrosting cycle the system s refrigerating capacity reaches maximum value the refrigerating circuit is reversed with the 4 way valve the fan in question goes OFF if pressure probes are present Set start t3 Ciclo di sbrinamento Tempo s The circuit leaves the defrosting cycle due to temperature pressure if batter
112. v Cod 030221296 Rel 1 4 11 09 08 52 Standard Chiller HP modulare per compressore a vite Generico Bitzer con driver CAREL 23 7 Driver card alarms Code Alarm description OFF Delay ege o Probe driver 1 fault Diver 1 EEPROM error 109 Diver 1 stepped motor error t Manva MsSw 104 jDivrtbateyemr Mamal MSR 105 Highpressureondrivert ven MsSv 106 Lowpressureondivert f Manat JMsSV 0 7 Low super heat driver 1 Manual Mst Slv 108 Valve not shut while driver 1 4 Manual Mst Slv being disabled High super heat driver 1 poo Marval MS 114 Standby due to EEPROM Manual Mst Slv battery recharge or open valve error driver 1 T Manual Mst Siw Fs ET e x Probe driver 1 fault Manual Mst Slv 202 Diver2motor EEPROM error Mama Mstisvwo 203 Diver2steppedmotorerror o T Manual JMst v 204 jDiver2bateyerr t Mama Mst Siw 205 Highprssueondiver2 Mana T NSN See eat ag T Manual MsSv O 208 Valve not shut while driver 2 Manual Mst Slv being disabled Driver 2 high intake temperature __ Mengt Mtv 214 Standby due to EEPROM Manual Mst Slv battery recharge or open valve error driv
113. varying the value of the thresholds see graph as a percentage of the value of the set Free Cooling differential For the Free Cooling valve the setting field ranges from 25 to 100 of the differential For the condensation inverter the setting field ranges from 0 to 75 of the differential Example Control setpoint 12 0 C Free Cooling Differential 4 0 C Free Cooling valve threshold 40 Condensation inverter threshold 80 Proportional area for control of Free Cooling valve 10 0 11 6 C Control Set point Free Cooling Differential 2 10 0 C Maximum threshold for valve opening 1 6 C Proportional area for control of condensation inverter 13 2 16 0 C Control Set point Free Cooling Differential 2 10 0 C Control Set point Free Cooling Differential 2 inverter speed minimum Threshold 13 2 C 21 10 2 Proportional integral control Differenziale Free Cooling MENS Differenziale Free Cooling lt gt PA O NEO M 10 Volt Valvola 0 10V Free Cooling Rampa 0 10V Inverter Soglia massima Soglia minima Temperatura Uscita apertura valvola velocit inverter Evaporatore Setpoint Free Cooling The devices whether they are valve or fans will be activated in the second half of the control differential through the effect of the integrating control This activation will be constrained by the set integrative constant The greater the value assigned to the integration time t
114. will enable any post heating heaters and totally disable the Free Cooling devices and an antifreeze alarm which will totally disable the unit Other system safety devices serious alarm from digital input circulation pump thermal cutout failed control probe failed antifreeze control probe evaporator flow switch alarm phase monitor alarm These safety device will totally disabled the unit and therefore stop the Free Cooling control 21 5 Free Cooling ON OFF valve 21 5 1 Proportional control Differenziale Free Cooling Valvola ON OFF Free Cooling 5 0 Setpoint Free Cooling Temperatura Uscita Evaporatore If temperature conditions favour Free Cooling control the Free Cooling ON OFF valve will be activated as soon as temperature exceeds the activation threshold of the individual step identified by a temperature value of Control Set point Free Cooling Differential 5 0 Free Cooling Differential The step amplitude is fixed at 5 0 of the set Free Cooling control differential 21 5 2 Proportional integral control Differenziale Free Cooling gt Differenziale Free Cooling Valvola ON OFF Free Cooling Setpoint Free Cooling Temperatura Uscita Evaporatore If temperature conditions favour Free Cooling control the Free Cooling ON OFF valve will be activated as soon as temperature exceeds the activation threshold of the individual step identified by a temperature value of Control Set point 5 0 Fr
115. y temperature exceeds the defrosting stop set point or due to maximum time if the defrosting cycle exceeds the set maximum time threshold 20 4 Defrosting a circuit with time pressure switches control The control is exactly the same the only difference is the fact that the temperature pressure is no longer counted but rather the status of the pressure switches 20 5 Operation of fans during the defrosting stage The fans are usually OFF during the defrosting cycle They are activated only if the pressure probes were enabled and pressure exceeds the prevent threshold in this way the unit is prevented from going into high pressure alarm status Cod 030221296 Rel 1 4 11 09 08 41 21 Free Cooling Control Inputs used e Water temperature at evaporator outlet e Water temperature at inlet of Free Cooling battery e X External air temperature Parameters used Type of unit Number of units Type of condensation Number of fans Free Cooling valve type Free Cooling type control Integration time Control set point Control setpoint offset Minimum Free Cooling Delta Maximum Free Cooling Delta Free Cooling Control differential Maximum threshold for Free Cooling valve opening Minimum threshold for condensation speed controller Free Cooling antifreeze threshold Compressor activation delay Outputs used e Condenser fans e Condensation fans speed controller e Free Cooling ON OFF valve e Free Cooling 3 way valve 21 1 1 Des

Carel Application program for pCO1, pCO2, pCO3 Standard Chiller

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