Standard air conditioning unit PCO In PLAN
Contents
1. 38 I5 T DIGITAL VARIABLES reete ee ete SS esee Pete S Q ev epe tete regle teste T 38 15 2 WHOLE VARIABLES u st e i E ies i 39 I5 3 2ANAEOG VARIABEES iet tere eter tese Ete See DU exe eese bee m eee e ua etes vea esee Ue S UO eee Urbes AN w QG 40 16 MATERIALS AND CODES eee tee eee eo e ee Fee eae e eoe ee e eee eed e S e ee eee ee eae eoa eee aee ede eae eae ee geo eie eae ee eee deos 41 Cod 4030221401 rel 1 1 date 09 07 1998 2 Standard pCO for Air Conditioning units pLAN REGULATION AND MICROPROCESSOR CONTROL MANUAL FOR AIR CONDITIONING UNITS T INTRODUCTION TO THE REGULATION The system provides advanced microprocessor management of air treatment and air conditioning units 1 1 FUNCTIONS CARRIED OUT BY THE SYSTEM Temperature and relative humidity regulation Control and signalling of the status of all the components in the plant Possibility to set and modify the regulation parameters Signalling of possible anomalies of the devices controlled by means of acoustic BUZZER and visual ALARM MASK signals USER MACHINE KEYPAD DISPLAY communication interface Possibility of connection to remote supervisor through R S422 serial communication Possibility of connection up to 8 pCO units in pLAN with STAND BY management Possibility to control all pCO units using just 1 DISPLAY 1 2 HARDWARE BEING2. Ol 513 zd le ooo o o eas s m amp TE SEE 875957575 PPO 27595757575 eee ee tee a Oana Gn Galas Cod 030221401 rel 1 1 date 09 07 1998 12 Standard pCO for Air Conditioning units pLAN Description of the humidifier parameters To select and control the humidifier it is necessary to properly preset the following parameters N NAME DESCRIPTION UM RANGE 1 kg h 0 42 3 E Cylinder nominal maximum output capaci 0 660 Phase no of the mains ic a model TAM model utilised I 50700 5 Preset capacity Capacity preset as maximum kg h 30 3 100 aM Humidity set point Set point of the humidity regulation rH 0 100 rH Humidity Band of the humidity regulation 0 100 differential rH High humidity High humidity alarm threshold 0 100 UE threshold rH Low humidity Low humidity alarm threshold 0 100 threshold rH 10 C0 Algorithm constant see the following pe ER paragraph see the following paragraph Preset tables of the C0 C1 parameters The C0 and C1 constants change according to the type of hu
3. Del ay between startsf same 0000 secf Del ay between starts Del ay between startsf two unload 0000 secf Del ay between starts Press key ENTER to insert manufacturer parameters WI T PLEASE J Enter new manuf act urer J password 0000 Jacinto J 14 ALARMS AL 1 OOOQ0OO000000O00000008 JALOL 00 00 00 00 00 J Conpressor 1 J General Alarm OO0000000000000000008 ALO2 00 00 00 00 00j Conpressor 2 General Alarm OO0000000000000000008 ALO3 00 00 00 00 00 f Low Pressure J Circuit 1 Pressostatf Standard pCO for Air Conditioning units in pLAN Fan start ti me del ay Fan stop ti me del ayf Constant for the tenperature control proportional integral Three point modul ati ng val ve openi ng ti Low pressure al armdel ay Starts when the conpressor starts hi gh ow hum di ty alarm Air flow controller acquisition del ay Compr essor tim ng As above Resi stance ti ni ng Storage loadi ng of the factory val ues See table PROGRAMVABLE SETS Hi gh pressure al armor thermal of the conpressor number 1 Hi gh pressure al armor thermal of the conpressor number 2 Cod 4030221401 rel 1 1 date 09 07 1998 35 OO0000000000000000008 ALO4 00 00 00 00 001 Low Pressure Circuit 2 Pr
4. 8 5 1 TWO COMPRESSOR UNIT WITHOUT THE ENERGY SAVING OPTION 8 5 2 TWO COMPRESSOR UNIT WITH THE ENERGY SAVING 8 5 3 SINGLE COMPRESSOR UNIT WITHOUT ENERGY SAVING OPTION eee meme 9 5 4 SINGLE COMPRESSOR UNIT WITH THE ENERGY SAVING OPTION 9 59 TWO RESIS TANCE UNIT en epi vago tee ea edu PER TER P RR ERES ER Y SU 10 5 6 SINGLEB RBSISTANCEUNITT eese eS Ee 10 6 DEVICE MANAGEMENII 11 6 1 COMPRESSORS S S SA 11 6 2 DEHUMIDIFICATION 11 6 3 NOTES ON THE ENERGY SAVING palsu ushu uu 11 6 4 E S EAS 11 7 HUMIDITY REGULATION GRAPDR 12 1 1 INTEGRATED HUMIDIFIER CONTROL soc seuss q alaq 12 7 2 PROGRAMMING OF THE HUMIDIFIER 0sccccceseeccceseccccusececcusecsceusecsecusecsscucecsseueecsseueecsseueeceseueecsseueeceseueessseueeseseues 14 7 3 MANAGEMENT OF THE HUMIDIFIER ALARMSG ccccsecccccsececcsececcusececcusecesc
5. 0 1 hysteresis 33 If factory capacity controlled compressors are utilised the step of the compressor and its capacity control coincide Cod 030221401 rel 1 1 date 09 07 1998 9 Standard pCO for Air Conditioning units pLAN 5 5 TWO RESISTANCE UNIT Rampa Acqua Calda HOT WATER RAMP LIMITE BASSA DEUMID LOW LIMIT DEUMID GRADINO2 STEP2 GRADINO1 STEPI 100 66 33 l BANDA META DELLA TOTALE BAND HALF OF THE TOTAL Factory values Resistancel set 25 Resistancel hysteresis 25 Resistance2 set 75 Resistance 2 hysteresis 25 5 6 SINGLE RESISTANCE UNIT Rampa Acqua Calda HOT WATER RAMP LIMITE BASSA DEUMID LOW LIMIT DEUMID STEPI GRADINO1 BANDA META DELLA TOTALE BAND HALF OF THE TOTAL Factory value Resistance set 50 Resistance hysteresis 50 Cod 4030221401 rel 1 1 date 09 07 1998 10 Standard pCO for Air Conditioning units 6 DEVICE MANAGEMENT 6 1 COMPRESSORS Once started a compressor can not be stopped before 1 min factory made MASK SELECTABLE VALUE Once started a compressor can not be stopped before 6 min factory made MASK SELECTABLE VALUE The possible starting of the second compressor can not take place within 3 min from the starting of the first one factory made MASK SELECTABLE VALUE In the two compressor configuration the compressor ROTATION can be
6. igh temperature outlet water high temperature __ outlet water low temperature complworking hours ma fimm fys eee eee prse jman 1MIN ye air out of order of order imm yes humidity probe outof order P yes highcurintehumdifer T fimm e abseneeofwaternthehumidier 20MIN fyes LOAD current failure to the humidifier UNLOAD clock card failure ST L L Ima yes 1 air filter hi hi 0 order Cod 4030221401 rel 1 1 date 09 07 1998 25 Standard pCO for Air Conditioning units pLAN 12 USER INTERFACE The user interface of this application is divided into three fundamental parts A USER part not protected by password which allows monitoring the quantities being regulated selecting the set point of principal control displaying the active alarms and the stored alarms A USER part protected by password which allows selecting all the control parameters of the various functions and processes managed by the program set point limits regulation differential regulation dead zone compensation only the parameters regarding functions enabled under manufacturer s password will be displayed and consequently selectable An ASSIST
7. 099 205 time t me Probe alarm delay temperature humidity outlet p ae 0 9999 water Air flow controller alarm dela 0 9999 time time SCC Delay between 2 capacity controller start 0 9999 0 9999 35 Delay between different resistance start Cod 4030221401 rel 1 1 date 09 07 1998 24 Standard pCO for Air Conditioning units pLAN 11 ALARM MANAGEMENT Every state of alarm is signalled acoustically by the buzzer incorporated into the pCO relay card visually by the LED lighting of the ALARM button tis possible to recall a message relative to an alarm occurred by pressing the ALARM button To rearm the alarms merely press the ALARM button when an alarm window is displayed The alarms are divided into three categories Device alarms ys ys SC no no Signalling alarms yes ys n 1 m ALARM eee on V3P2 REARM DELAY ONLY HUMID NOTES VIS _______ J j compressor 1general mm general compressor2 e mm low pressurel jej man fimm lowpesue2 bef ye 5 man Jmm ie RR d ct o 5 resistance 1thermal e fimm jej yes ma mm 0 Jw IURE S high temperature
8. 2 As above Supply air tenper probe ed N f Outlet water tenper enabled _ N gt MMANUF As above External air temper f probe enabl ed N f Inlet water tenper enabled _ N gt M MANUF CONF4 U l OOOOOOOOOOOOOOOOOOOO2 As above Room huni di t y J probe ed N f ntegr hunidifier f N gt MANUF 5 T As above Energy savi ng N f Heaters Of Compressors no of Unl comp __ NS MANUF 6 5 As above Cooling val ve N f Heati ng val ve N f Cooling fl valve ng fl valve f M MANUF CONF7 ls OOOOOOOOOOOOOOOOOOCO Select if the unit wll work in Rotation Unit Configuration f Auto Sequence or pendent y Stand Al one Conpresser wth J In this ndow if at least one valve in J conpressor is installed it is specified energy saving N f if the valve WII be operating in energy saving J wth the conpressors two conpressors are installed regulation f operation in rotation of the conpressors Rotati on conp N f no of conpressors for the fi cati on dehunid O f capacity control logic Normally Closed Logic unloader N f Nor nal y Open The regul ati on OOOOOOOOOOOOOOOOOOOO proporti onal P or proportional
9. As above Current absorbed by the hunidifier Current to be mai ntai ned Maxi mum current allowed by the cylinder As above As above versi on of the software Regul ati on of the internal clock it is necessary to mount the watch card Enabling of the automatic operation wth change of the temperature set poi nt Pre setting of the ti me band no 1 The ti me band starting hour and the rel evant tenperature set poi nt wll be sel ected The time band ending wll be the nni ng of the follow ng one As above As above Cod 4030221401 rel 1 1 date 09 07 1998 29 M DAI LY4 T Tenperature Daily time zone 4 orant time 00 00 Dai y ti me zone wthf automatic humidity set poi nt variation f Huni di t y Daily time zone 1 f time 00 00 Hum di t y Daily time zone 2 f JStart time 00 00 Hum di ty Daily time zone 3 f time 00 00 G0000000000000000000 Hum di ty Hum di t y Daily time zone 4 Start time 00 00 f Set poi nt 000 0 gt OOOOOOOOOOOOOOOOOOOO SET BUTTON M CALC SETP Act ual set poi nts Tenperature 00 0 Huni di ty 000 0 96 f J Set poi nts Tenperature 00 0 di t y 000 0 J PROG BUTTON M_SERV_PASS Enter the service f password 0000 Tenper at ure set poi nt f flimts J ni mum 00 ORC Hum dity set poi nt flimts J JM ni 000 0 f Standard pCO for Air Conditioning
10. Probe cal i bration w ndow no 2 Manual acti vati on of the devi ces Cod 4030221401 rel 1 1 date 09 07 1998 27 T Manual procedure Dehuni di fi er T Manual procedure Open cool fl v T Manual procedure Unl oader 1 T Manual procedure Open heat fi OOO000000000000000000 Manual procedure J Cool val ve 00 0 Vf Jf Integr hunidifie D sable hum d N Manual drain N Manual drain N OOO00000000000000000 J Printer management Cyclic print 000 hf mediate print of f Junit report NJ 1 0 BUTTON MSYNOPTICI 00000 000000000000000 Anal og i nputs Room Tenp 00 0 Suppl y air 00 0 M SYNOPTI C2 OO00COOO0000000000008 Anal og nputs Inlet water 00 0 Outl et water 00 0 f Digital inputs f ose 0 06 CCCCC M SYNOPTI C4 OO00COQ0O0000000000008 Anal og out put s J J Cool i ng val ve 00 0 Vf Standard pCO for Air Conditioning units in pLAN As above As above As above As above As above Integrated hunidifier disabling Manual drainage acti vati on maxi 120 sec Tine interval for the cyclic print Activation forcing of a print Displays the state of the analog inputs and outputs It is displayed wth the I O button As above As above As above Cod 030221401 rel 1 1 date 09 07 1998 28 M_SYNOPTI S Digital
11. f Lack of Current J JAL28 00 00 00 00 00 J Clock Board J Faulty or not J J Connect ed J AL29 00 00 00 00 00 EEPROM Faul ty Call Assistance J J The operating threshold Standard pCO for Air Conditioning units in pLAN preset in the mai branch has been exceeded As above As above Cod 030221401 rel 1 1 date 09 07 1998 37 Standard pCO for Air Conditioning units pLAN 15 DATABASE OF THE SUPERVISOR The variables reported below will be transmitted between pCO and supervisor only if all the following conditions will be met the serial card is inserted into the proper connector that is found on the interface the supervisory function is enabled in the M_MANUF_CONF1 window protected by manufacturer s password the address of the unit is properly select with reference to the supervisory network the M PARAM USERI2 window protected by user password the equipments have been correctly connected to the network supervisor and pCO 151 Digital variables Compressor 1 general alarm digital input Compressor 2 general alarm digital input Pressure controller 1 low pressure circuit digital input Digital Reading Ei Pressure controller 2 low pressure circuit alarm digital ae s input 9 Resistance 1 thermal alarm digital input
12. OF THE MASKS J J PLEASE f READ INPUTS f OO0000000000000000008 00 00 00 00 00 Unit1f Room t enp 00 0 Roomhunid 00 0 OO0000000000000000008 Operati ng hours Mai n fan 000000 Conpressor 1 000000 Enter maintenance f password J J OO00000000000000000C0 Mai fan hour meter f J J Threshol 000x1000 M SEL TIMERZ OO00COQOOO00O0C0000000008 Conpressor 1 hour J meter 1 Threshol d 000 1000 M SEL TIMERS nan OOO00000000000000000 Conpressor 2 hour J Threshol d 000x1000 Probe adj ust ment J Roomtenp 0 OBC f Supply air 0 06 Out water 0 OOQOO0000000000000000 Probe adj ust ment water 0 0 f 0 0 J Manual procedure Mai n fan N Energy ng NJ 1500000000000000000000 Standard pCO for Air Conditioning units pLAN Appears when the pCO is switched on Remai ns visible for about 5 seconds and is used as warning to wait for the machine to be initialised Displays the current working nodes of tenperature and hunidity Di spl ays the current worki ng node The bl ackened box means that the speci fic function at issue is now acti vated Shows the operating tine of the equi pnentis Pre setting of the fan tine operating tine established before the mai ntenance As above As above Probe cali bration w ndow no 1
13. UTILISED 1 8 Analog input pCO card 2 4x20 LCD pCO terminal 3 Clock board with address Only for pCO card n 1 4 Address board for the other pCO cards EPROM codes Italian version EPSTDICZUB English version EPSTDECZUB Cod 4030221401 rel 1 1 date 09 07 1998 3 Standard pCO for Air Conditioning units pLAN General description Where a series of many A C units close controls are installed for cooling a single environment tipically in Telecom switching rooms unit is configured as STAND BY This unit intervenes when a RUNNING unit is stopped because of an alarm or for giving a rest to the running unit in order to balance the working hours for each close control STAND BY A C UNITS MANAGEMENT RUNNING RUNNING STAND BY STAND BY RUNNING In the picture above the second running unit becomes a stand by one and the third stand by units intervene becoming a runnning unit This pLAN system can be also connected with EasyTel Carel supervisory telemaintenance Network Cod 030221401 rel 1 1 date 09 07 1998 4 Standard pCO for Air Conditioning units pLAN 2 INPUT OUTPUT DESCRIPTION The control card represents the heart of the system as it contains the microprocessor that executes the control algorithm 1 Powersupply connector 24 V 50 60 Hz 15 VA
14. eprom into the special socket we BE CAREFUL TO INSERT THE EPROM IN THE CORRECT DIRECTION connect the probes and devices to the relay card as per the input output table on page 4 connect the power supply to the interface connect the card in pLAN using the J 11 connector b pLAN configuration see chapter 8 0 pLAN network C Software initialisation SOFTWARE INITIALISATION INVOLVES SETTING THE FOLLOWING e the control parameters set points alarm thresholds etc e type of control proportional proportional integral compressor rotation etc e the available devices compressors valves etc e ALL THE SELECTED DATA IS STORED IN THE PERMANENT MEMORY SO AS TO AVOID IT BEING LOST WHEN THE UNIT IS CLEARED d Updating the EPROM program Every time the eprom is changed the unit must be reprogrammed To carry out this operation select the parameter found in the M DEFAULT window UNIT INSTALLATION protected by manufacturer s password 4 REGULATION STRATEGIES The temperature control can be of the proportional or proportional integral type selection is possible in the M MANUF PARAM2 window Unit configuration under manufacturer s word branch The proportional control operates according to the difference between the temperature or humidity requested SET POINT and the value actually being measured consequently real The regulation depends on the difference between the requested temperature and the temperature be
15. humidifier EPSTD CZUB unit two possibilities are given to the customer First One is to connect a terminal for any pCO board Second one is to connect just a terminal number 16 shared between all pCO boards It could be also possible to foresee a mixed configuration private terminals plus a shared terminal 8 6 pLAN CONFIGURING PROCEDURE Follow these stages for a correct pLAN Terminals configuration Firstly the procedure for a LCD display Terminal is described then the one for a LED display Terminal The program is stored in the Terminal microprocessor STAGE 1 pCO main board selection This stage associates a pCO main board to the Terminal Push simoultaneously the first three keys on the upper left corner of the keyboard Push them for at least 5 seconds 5 sec This mask appears Terminal Adr nn 1 0 Board Adr 01 Terminal Adr is not changable lt nn gt represents the address set on the dip switch on the rear side of the Terminal I O Board Adr field shows the pCO main board address that is connected to the Terminal Arrow keys change the pCO main board address in order to connect the Terminal with another pCO main board If no pCO main board is connected with the Terminal is shown in place of the figure representing the pCO main board address Push Arrow Keys for changing it If no pCO main board is connected to the pLAN or no pCO main board is addressed it is not possible to make any communication Enter Exit f
16. ln 250 200 In 170 In ET 130 In N Forced drain lt High current 0 20 60 t The forced drain lasts 5 seconds and is not signalled The high current alarm causes a 30 second water drainage and stops the humidifier 11 case of current failure neither the control should operate but if only a phase is absent you could measure no current whereas actually this is above the security threshold 2This to prevent the current once the alarm has been reset and the power contactor reenergised from raising quickly beyond the allowed limits Cod 030221401 rel 1 1 date 09 07 1998 15 Standard pCO for Air Conditioning units pLAN 8 PLAN NETWORK Every pLAN node must be addressed to be identified by the other nodes Each address an integer number must be unique in the network for avoiding messages mismatch in case two or more nodes have the same identifing address the network cannot work The max address number selectable is in the 1 16 range for the Terminals and 1 16 for the pCO main boards W BECAUSE OF HARDWARE CHARACTERISTICS IT IS POSSIBLE TO CONNECT UP TO 16 ADDRESSES A example of combinations could be 8 Terminals 8 pCO main boards 8 1 pCO MAIN BOARD ADDRESS SELECTION pCO main boards are addressed using the additional PCOADROO00 PCOCLKMEMO plug in cards They have these part numbers PCOCLKMEMO Plug in board for address selection plus real time clock and calend
17. or 24 V 10 W 2 pLAN connector 3 Telephone type connector for connection to the User terminal unit MMI Man Machine Interface or to local network 4 Yellow LED indicating the mains power present 5 7250 VAC 2 A slow blow fuse 2TA 6 EPROM containing the application program 1 8 Address real time clock card optional RS422 or RS485 card for connection to serial line for CAREL supervisor and or telemaintenance network 9 Jumpers to select the local network communication mode 8 at position 1 2 allows you to connect the board to a terminal unit or possibly to the supervisory PC at position 2 3 allows you to connect the board to the local network 9 at position 1 2 allows the supervisory PC to reset the pCO at position 2 3 prevents the supervisory PC from resetting the pco 10 Jumpers for selecting the analogue inputs J 14 B5 J 15 B6 28 87 29 B8 11 Additional analogue inputs no 7 and no 8 only in the cards with 8 analogue inputs can be selected to accept either 4 20mA or 0 1VDC signals 12 Analogue inputs B n Analogue input 1 6 8 for boards with 8 analogue inputs code PCOBO000 1 AVSS Common reference for analogue inputs B n From B1 to B4 preset to accept Carel NTC probes B5 and B6 can be selected to accept either 0 1 VDC or 4 20 mA signals see point 10 13 Digital inputs 24 VAC 10 mA D n Digital inputs 1 10 DCM1 Common reference for digital inputs 1
18. outputs J JC Close O Open J 101 000 04 000 107 990 10 00 J M_SYNOPTI C6 cen J Hum di f i er J Main swtch OFF f Fill valve valve QFE J M SYNOPTI C7 J Hum di f i er Measur Amps 000 00 Af Target Amps 000 00 Af M SYNOPTI C8 OOO0000000000000000008 J Hum di fi er fvat evel open Conduct 0000 5 Cof M_SYNOPTI cee OO0OOOQO0000000000008 J Hum di f i er J fCyl worn out N f Mode status h J OOO000000000000000008 CONTROLLER STANDARD CLOSE CONTROL UNITS f J Code EPSTDECZUB CLOCK BUTTON REG J Clock amp date J Setting Ti ne 00 00 J JDate 00 00 00 M CLOCK PASS a Enter the cl ock J password J 0000 Right password _ J M DAL LY TEMP OO0OOOQOQ000000000008 Daily ti re zone wthf automatic tenper J set poi nt variation N M DAI LY1 TEMP OO0000000000000000008 at ure Daily time zone 1 f Start time 00 00 Set poi nt M LY2 TEMP OO0000000000000000008 at ure Daily time zone 2 Start time 00 00 Set poi nt M DAI LY3 TEMP OO0000000000000000008 Tenper at ure J Daily time zone 3 Start time 00 00 Current Standard pCO for Air Conditioning units in pLAN
19. selected RESISTANCE In the 2 resistance configuration the following 2 functions are available e STANDARD during connection RESISTANCE1 RESISTANCE1 RESISTANCE2 during disconnection RESISTANCE1 RESISTANCE2 RESISTANCE1 e BINARY during insertion RESISTANCE1 RESISTANCE2 RESISTANCE2 RESISTANCE1 during connection RESISTANCE2 RESISTANCE1 RESISTANCE2 RESISTANCE1 6 2 DEHUMIDIFICATION STOP The HIGH LIMIT step operates during the dehumidification as follows when reaching the upper limit of the cold band 85 the HIGH LIMIT step is energised and stops the dehumidification the step remains energised up to a value of 15 of the warming band and the dehumidification will start again only if still requested 6 3 NOTES ON THE ENERGY SAVING In order to be able to exploitthe Energy Saving option the following relationship has to be verified Tambient Twater gt SETenergy saving 15 energy saving The value SET ENERGY SAVING is mask selectable M MANUF PARAMI1O window in the General parameters branch If this situation is verified then the following will occur if in the M MANUF 1 Compressors with valve in Energy Saving you answer yes then the compressor steps within the band are delayed in reference to the cold water ramp but only when the necessary conditions for the energy saving operation occur In the opposite case namely energy saving being enabled but in the absence of the functioni
20. the instantaneous steam production by checking the value present in the mask group bound to the MENU button Furthermore the user will be able to monitor some characteristic values such as the feedwater conductivity the absorbed current per phase and the different working modes in the group of masks bound to the I O button 7 3 Management of the humidifier Alarms Below the various detectable alarms are listed together with the detection criterion and the possible corrective operations Alarm deficiency of When the water level reaches the Turn off the power current sensor of full and Im lt 5 ln is Empty out the cylinder measured 1 mre cm uen water minutes consecutive igh or low humidity Humidity over or below the preset None alarm threshold Signalled only 20 minutes after the pressure of the ON button Foam presence Foam has been detected inside the The situation is managed up to its indication cylinder The presence of foam is extinction with a special procedure by signalled in the i o the control HUMI PCO 10 window temporarily maximum capacity is not guaranteed puc cylinders saturated with cylinder replacement is suggested limestone limits see relevant chapter power High current alarm To prevent the current from raising over the maximum allowable values limits have been established These however are bound to time since they must allow temporary peaks at the instrument switching on Imax 300
21. three point modul ati ng valve See Tenperature regul ation graphs As above Hum di fi cation step regul ati on See HUM TY CONTROL GRAPHS Huni di fi cati on step regul ati on See HUM DI TY CONTROL GRAPHS Dehum di fi cati on stop step See HUM DI TY CONTROL GRAPHS Dehum di fi cati on stop step See HUM DI TY CONTROL GRAPHS Parameters for the i denti fi cati on of huni di fi er type Enabling of the drain wthout voltage CAREL PARAMETER O see paragraph Integrated humidifier control CAREL PARAMETER 1 Select total Unit s number engaged for rotation Rotation s Reset and restart Select rotation cycle Hours nornal or Mnutes test Rotation can be cyclic 1 2 3 1 2 or dependi ng by the unit who have the amount of Running Hours Sel ect minutes nunber for Rotation test Sel ect Rotation hours Cod 030221401 rel 1 1 date 09 07 1998 34 OOO00000000000000000 Ti me del ay switchi ngf main fan 000 secf Ti me del ay switchi ngf Integral ti J only PH 0000 secf Float ngf tine 0000 sec f Low pressure alarm f delay time 0000 secf Temperature alarm f flow al arm ayf ti ne 0000 lt J J off tine 0000 lt on ti 0000 sec f
22. units in pLAN As above Enabling of the automatic operati on wth change of the hum di ty set poi nt Ti me band no 1 pre setti ng The band hour start and the rel evant hunidity set point wll be preset The end of the tine band wll be the start of the follow ng one As above As above As above Di spl ays the val ues of the acti ve set poi nts if the functi ons are active of tine and tenperature conpensati on and di ty or conpensati Change of the set poi nts The val ues must be included wthin the linits bei ng preset in the M PARAM USERx masks Presetti ng of the tenperature set point li mts Presetti ng of the hunidity set point linits Cod 4030221401 rel 1 1 date 09 07 1998 30 M_PARAM_USER3 Tenper at ure Band 00 OBC Neutral zone 00 OBC n Hum di t y Band 00 0 96 Producti on 00 0 kg hf Aut onat i c restart after power fail N f Remote on off savi ng 00 0 Conpensat i on fenabl ed N f J Conpensati Set poi nt 00 0 Band 00 0 Roomtenperature fal arns Offset low 00 0 BCJ G0000000000000000000 Room huni di t y fal arns Offset low 000 0 G0000000000000000000 JOut et water tenp J threshol ds al arns Low 00 0 G0000000000000000000 fl denti f i c address f for supervi sor systemnetwork 000 J EE iav Eid J gt OOOOOOOOOOOOOOOOOOOO USER13 U En
23. 00 10h ees Manual procedure assistance C N Energysaving Dehumidifier N Compressor Pp Ce Resistance 1 x Resistance 2 E j cece 01 10 0 10 Cold fan Warm fan Cod 030221401 rel 1 1 date 09 07 1998 22 Standard pCO for Air Conditioning units in SELECTABLE QUANTITIES LEVEL RANGE PRE SET ee ee EE a CIEN Humidity set point s a Temperature minimum set pointlimits 1 999 999C 999C Temperature maximum set pointlimits 999 999C 99 Humidity minimum setpoint limits setpont user OH 0 Humidity minimum set pointlimits 10 Temperatureband usr r Tempeatreneuralzone user _ 0 999C Humidityband usr 09 30 uer variable 3kgh Automatic restart after voltage drop use NT Remote ON OFF enabling usr PN Compensation enabling ser PN Compensation setpoint 99 99 Compensationband usr 99 99 Compensation offset_ 9999 Temperature alarm ser lwofst tore hghofset Ob e r O S e Humidity alarm ser low offset 000
24. 0008 AL17 00 00 00 00 00 Conpressor 1 Oper ati on Hour J J Alarm AL18 00 00 00 00 00 lt lt 2 Operation Hours f Alarm BE 19 00 00 00 00 00 Main Fan J Operation Hours f Alarm AL 20 OO00000OO000000000008 AL20 00 00 00 00 00 Jf RoomTenperature f Probe Faulty not J Connect ed J 21 00 00 00 00 00 f Outlet Water Probe Faulty not J Connect ed J OO00OOQOQ000000000008 JAL22 00 00 00 00 00 Inlet water tenp Probe Faulty or not f J Connected 23 00 00 00 00 00 Supply Tenp Probe Faulty not J Connect ed J OOOOOOOOOOOOOOOOOOOO JAL24 00 00 00 00 00 J Room Hum di ty Probe Faulty or not J Connect ed J JAL25 00 00 00 00 00 J Al arm E06 J J Hi gh Current J JAL26 00 00 00 00 00 J Al arm E09 J J Lack of Water J JAL27 00 00 00 00 00 Al arm E10 J
25. 14 Enegysvng Humidification Humidification power contact Compressor 1 capacity control Integrated humidifier loading Compressor 2 capacity humidifier unloading p cold valve opening contact p cold valve closing contact p warm valve opening contact p warm valve closing contact General alarm control Integrated 3 3 3 3 37 Compressor 1 operating time alarm 44 Outlet water low temperature alarm 48 External air temperature probe disconnection alarm Fan operating time alarm Outlet water high temperature alarm Temperature regulation type Humidity probe enabling Outlet water probe enabling 0 a 9 37 40 49 Cod 030221401 rel 1 1 date 09 07 1998 Digital Reading 38 Standard pCO for Air Conditioning units pLAN 60 Binary combination resistance enabling Digtal 62 Energy saving enabling Digtal Enabling of simultaneous operation of compressors Digital Writing Reading with 0 10V valve 66 ____ Compressor rotation enabling Digital Writing Reading Reading 1 Reading Writing Reading Reading 90_ Integrated humidifier enabling Digtal Reading 152 Whole variables 10 Cold 010 valve rampstat_ Whole Writing Reading 16 Compressor 1 step without energy saving Whole Writing Readig 18 Compressor 2 step without energy savin
26. 150 3 TAM 300 4 500 5 TAM 700 DRAIN ENABLING WITHOUT VOLTAGE you preset how to carry out the drainage that is to say with the power remote control switch being connected or disconnected Capacity and humidity regulation The regulation of the humidifier steam capacity depends on Humidity R egulation Preset capacity CAPACITY window M PARAM USERA protected by manufacturer s password The humidity regulation is carried out by the control based on the reading of the humidity probe at a set point and a humidity differential The control calculate a proportional humidity error ERP DITA rH Cod 030221401 rel 1 1 date 09 07 1998 14 Standard pCO for Air Conditioning units pLAN The preset capacity is the maximum required capacity and is a value that can change between the 30 of nominal C and the 100 of nominal C According to the nominal capacity the preset capacity and the ERP proportional humidity error the following humidifier graph will be obtained A 100 P_NOM ERP propotional humidity error relevant set and differential B Steam production to de obtained A 10096P n C 50 0 30 NOM 100 10 ERP O ERP The humidifier has a minimum capacity equal to the 30 of the nominal C when the ERP 0 and increases proportionally to the increase of the preset capacity when the ERP 100 Monitoring of the steam capacity and of the humidifier characteristic values The user can verify
27. 2 hghofset 100 3 a LNSCR MN NNI Outlet water temperature threshold alarm S o lwofst 5 1 1 1 1 999 99C 2C w hghofset 999 99C nro ei ne E Printrepetiion 0 99h 2h engl SET RR Temperature set point automatic variation clock TN S ee See eS Temperature time band 1 4 Sat me _ 001239 6 Setpoint rice 1 Humidity time band 1 4 So cock Sat me 000 2559 ooo Setpoint MANUFACTURER S PARAMETERS Clock card enabling unitconfigurat N Printerenabling N s 1 1 1 1 Warm modulating valve enabling Cold 3 point valve enabling wmitconfguat Warm 3 point valve enabling unitconfigurat E219 0 2 ere ne i fee ll Regulation time general parameters Prop Prop tintegral Dehumidification logic general parameters Normal Open Cod 030221401 rel 1 1 date 09 07 1998 23 Standard pCO for Air Conditioning units in SELECTABLE QUANTITIES LEVEL RANGE PRE SET eee Ae eee a eee 1 2 compressor step with without Energy Saving general parameters 0 100 0 100 100 Sas vn 1 2 capacity control step with without Energy genera
28. 5 DCM2 Common reference for digital inputs 6 10 14 Digital outputs commutable power 2500 VA 10 A 250 VAC O n Normally open contact output n C n Normally closed contact output n C n Common contact output n 15 Digital inputs available at 230 VAC or 24VAC 10 mA 011 230 VAC 1012 230 VAC Digital inputs 11 and 12 for signals at 230 VAC 011 24 1012 24 VAC Digital inputs 11 and 12 for signals at 24 VAC D11R 10128 common reference for respectively digital inputs 1011 and ID12 230 VAC signals must not be connected to 24 VAC terminals as this will damage the board itself 16 Analogue outputs 0 10 VDC Y n Analogue outputs 1 and 2 10 mA max VGI External power for analogue outputs 24 VAC or 24 VDC VGO Reference for power and for the analogue output signal Y 0 and Y 1 The Reference column indicates the contacts on the pCO card 2 1 DIGITAL INPUTS 101 IDCM1 COMPRESSOR 1 GENERAL ALARM HIGH PRESSURE OR THERMAL 102 IDCM1 COMPRESSOR 2 GENERAL ALARM HIGH PRESSURE OR THERMAL 103 IDCM1 COMPRESSOR 1LOW PRESSURE 04 IDCM1 COMPRESSOR 2LOW PRESSURE 105 IDCM1 DIRTY FILTER SIGNALLING ID6 IDCM2 FAN THERMAL 107 IDCM2 AIR FLOW CONTROLLER ID8 IDCM2 REMOTE ON OFF 109 IDCM2 THERMAL RESISTANCE 1 ID10 IDCM2 THERMAL RESISTANCE 2 1011 ID11R HUMIDIFIER LEVEL CONTACT 1012 10128 PRESENCE OF FIRE Cod 030221401 rel 1 1 date 09 07 1998 5 Standard pCO for Air Conditi
29. ANCE part protected by password intended for the assistance for the hour counter management of the compressors and machine for the calibration of the connected probes and for forcing of the relay outputs A MANUFACTURER part protected by Password enables the configuration of the system with the selection and activation of the functions of the devices to be controlled 121 KEYPAD The pCO is equipped with a 15 button keypad that along with the display represents the interface between the operator and the pCO system The keypad provides the operator with the following functions ON OFF button Energises and deenergizes the unit The unit has to be switched on by this button in order to carry out any control verification or operation See Regulation ON OFF ALARM button The pressure of this button displays the first active alarm window and simultaneously it switches off the buzzer A second pressure of this button reactivates the alarm or the active alarm The display of several alarm masks can be obtained by pressing the UP DOWN arrow buttons If there are no active alarms in storage by pressing this button you go to the window NO ACTIVE ALARM See the regulation of the Alarms AY buttons These buttons have a double functionality 1 Scrolling of the mask branches when the cursor is on the upper left 2 Increasing and decreasing the parameters or changing the values when the cursor is at the beginning of the parameter ENTER button In
30. Application program for pCO 1 0 lt 2 0 e 4 9 5 0 Standard air conditioning unit pCO in pLAN Manual version 1 1 09 07 1998 Program code E PSTD ECZU B CAREL Rif 102EM Technology amp Evolution Standard pCO for Air Conditioning units pLAN CONTENTS 1 INTRODUCTION THE REGULATION 3 1 1 FUNCTIONS CARRIED OUT BY THE SYSTEM ara nennen enne nen 3 12 HARDWARE BEING UTILISED 3 2 INPUT OUTPUT DESCRIPTION 5 2 1 DIGITALE INBUTS 4 iu ote eiie eir ne in RH RR S c Ree 5 22 ATAESISSIIQOUN 6 23 eate c B OE eS 6 24 ANAT OG OUTPUTS L Z a de eet aaa eee ed ted ei tede etes oe dee eee uten 6 3 INITIAL INSTALLATION OR UPDATING THE EPROLM 7 4 REGULATION STRATEGIES 6 een ooo eno oo nave a eaae a eoo eese caso EVOP ERPE seso ano 7 5 TEMPERATURE REGULATION DIAGRAMS
31. UES EXCEEDING THIS TEMPERATURE RANGE SET POINT DEHUMIDIFICATION IS INHIBITED see graphs of the temperature control Humidification can be carried out through the ON OFF control as for the dehumidification described above that is a humidification step is selected in pret WP eae e exactly the same way as for dehumidification or with the integrated humidifier are control selectable from M MANUF CONF4 mask under the Unit configuration branch protected by manufacturer s password DEHUMIDIFICATION 7 1 Integrated humidifier control The humidifier control standard pCO for air conditioning units manages the immersed electrode humidifiers to be paired with the OEM kits can control all the humidifiers from 1 to 42Kg h three phase single phase with power supply voltage from 200 to 660 V 220 240 V or 380 415 V voltages are recommended For the regulation an eight analog input pCO interface is being utilised along with an optional card so as the pCO interface can read the signal from the TAM current transducer the conductivity reading signal and the full sensor The pCO in accordance with the current and relative humidity controls the steam production and the working conditions of the humidifier it also manages and signals all the states and alarms of the humidifier pCOUMIDO0000 card connection diagram dock
32. ar only for pCO n 1 PCOADR0000 Plug in board for address selection for the other pCO boards These boards must be present on every pCO main board for a correct networking If the addressing board is not plugged the pCO main board works as stand alone without interacting with all the others local network nodes pCO main boards and Terminals 0 notpossibe State off on off on off on off on _ 0 1 09 2 0 41 18 Addr P 5 1 S w2 4P S w3 P S w4 STATUS LED present only in pCOADDCLKO Address selection PCOADRO000 or PCOADDCLKO see table to be inserted on pCO main board clock board pin strip In the application standard air conditioning humidifier EPSTD CZUB unit the dip switches configuration allowed for the pCO cards are the following Faai Fr PEL FT ae Cod 030221401 rel 1 1 date 09 07 1998 Standard pCO for Air Conditioning units pLAN If all the dip switches are OFF not allowed configuration the R Y G Leds are lit PCOADRxxxx boards have three LEDs on the top side for indicating basic node status They are Red Yellow and Green coloured STATUS DESCRIPTION ON pCO main board is syncronized with all the other pLAN nodes The node is working correctly rr OFF pCO main board is not network conneceted or it doesn t receive any signal from the pLAN pCO main board is transmitti
33. dc L 8 Carel NTC probe 3 i m Carel NTC probe 2 Analogue output 2 0 10Vdc ric im CL Carl probe 1 IDCM2 Digital input 11 230Vac e Db Digital input 10 Digital input 9 a Digital input 8 zuo u Digital input 7 Digital input 12 230Vac Digital input 6 non 05 Digital input 5 Digital ouput cH Di igitai Inpi Digital input 4 lt I igital input igital i Digital output 10 E IN 2 Digital input 1 C r7 Digital output 1 EM 3 Digital output 9 nce h Digital output 2 c Digital output 8 a 73 Digital output 3 path a lt Digital output 7 Digital output 4 SSO e ru Digital output 6 gt BE ll NOS Digital output 5 Digital output 13 7 bide pid Digital output 12 Cod 030221401 rel 1 1 date 09 07 1998 6 Standard pCO for Air Conditioning units pLAN 3 INITIAL INSTALLATION OR UPDATING THE EPROM The initial installation can be divided into three parts a Hardware connection AFTER MAKING SURE THAT THE MATERIAL RECEIVED CORRESPONDS EXACTLY TO THAT ORDERED BEGIN UNPACKING AND CONNECT THE INDIVIDUAL PARTS TO ASSEMBLE THE CONTROLLER The sequence of the operations is as follows e connect the telephone cable between the user terminal and the relay board Insert the program
34. e following State off on off on off on off on off on Lo 11102 10 Addr P 5 1 S w2 4P S w3 P 54 P S w5 In the application standard air conditioning humidifier EPSTD C ZUB unit the dip switches configuration allowed for the terminals are following ml ie sua Pl imn L Terminal n 1 Terminal n 2 Terminal n 3 Terminal n 4 13 14 15 16 Terminal n 5 Terminal n 6 Terminal n Terminal n 8 gt sW6SW7 SW8 ALWAYS OFF W NOTE Take care in avoiding to leave all the dip switches on OFF position In this case the network will not work properly Cod 030221401 rel 1 1 date 09 07 1998 17 Standard pCO for Air Conditioning units pLAN 8 3 NETWORK NODES ADDRESSING PROCEDURE After having electrically connected every node by T DEVICES as described before follow these stages for completing the nodes addressing depending on the project strategy chosen pCO main boards and Terminals if they have an external power supply powered OFF Select the pCO main board address by means of the dip switches located on PCOADRxxxxx boards looking at the above table and instructions 9 Insertthe PCOADRxxxxx card into the pin strip usually reserved for the clock board on pCO main board Make this operation carefully for not damaging the connectors and the boards Touch with hands a metal case connected to earth before handling every board see al
35. ed out low part Whole Reading 15 3 Analog variables 4 External air temperature sf Analog Reading 6 Dead zone in temperature Analg Writing Reading 8 Ambient humidityset_ Analog Writing Reading 9 Lowtemperature alarm offset Analg Writing Reading 10 high temperature alarm offset Analog Writing Reading 18 Water low temperature limit Analg Writing Reading 19 Water high temperature limit Analg Writing Reading Cod 030221401 rel 1 1 date 09 07 1998 40 Standard pCO for Air Conditioning units pLAN 16 MATERIALS AND CODES The Standard pCO for Air Conditioning units consists of the following devices user interface cod PCOTOO0CBO LCD 4X20 eprom cod EPSTD CZUB English E and Italian l versions are available pCO relay card extractable terminals cod PCOB000A21 fix terminals cod 00 21 interface main board connection cables cod S90CONN000 1 2 address board address clock EEPROM 32Kb cod PCOCLKMEMO necessary for the pCO board n 1 address only cod PCOADR0000 for the other units T connector for terminals cod TCONN6J 000 probes of different type and code according to request Carel reserves the right to modify the features of its products without prior notice Cod 4030221401 rel 1 1 date 09 07 1998 4l
36. essostatf OO0000000000000000008 ALO5 00 00 00 00 OOs Jf Flow Al arm J Jf serious alarm J fias UN T OFF ns T 000000000000000000008 AL 6 OO00OO0O0O000000000008 ALOG 00 00 00 00 00 J Main Fan Overload f Jf serious alarm J UNI T OFF J OOO000000000000000008 OO00OOQOQ000000000002 JALO7 00 00 00 00 00 J J Heater 1 Overload J JALO8 00 00 00 00 00 Heater 2 Overload J ALO9 00 00 00 00 00 Fire or Smoke Alarm f serious alarm J AL10 00 00 00 00 00 f Air Filter Alarm J J JAL11 00 00 00 00 00 J Hi gh Room Temperature Al arm AL12 00 00 00 00 00 Low J Temperature Al arm JAL13 00 00 00 00 00 J Hi gh Room J Humdity Alarm f J AL14 00 00 00 00 00 Low Room J Humdity Alarm f J OO0OOOQOQ000000000002 AL15 00 00 00 00 00 J High Outlet Water f Temperature Al arm f 16 00 00 00 00 00 Jf Low Outlet Water f J Temperature Al arm J Cod 030221401 rel 1 1 date 09 07 1998 Standard pCO for Air Conditioning units in pLAN OO00000OO00000000
37. g Whole Writing Reading 19 Compressor 2 hysteresis without energy saving Whole Writing Reading Time interval between different compressor switching Writing Reading on Whole Whole Writing Reading Writing Reading High low temperature humidity alarm dela Writing Reading 62 64 i i 6 Temperature time band enabling Writing Reading ON OFF from supervisor enabling Writing Reading i 80 Resistance switching on time interval Writing Reading Capacity control 1 step without energy saving Writing Reading Capacity control 1 step saving Whole Writing Reading Capacity control 2 hysteresis without energy energy Writing Reading saving i Whole Capacity control 1 hysteresis with energy saving Writing Reading Capacity control 2 step without energy saving Writing Reading 6 Capacity control 2 step with energy saving Whole Wrt ng Readng Capacity control 2 hysteresis with energy saving Compressor 2 operation time limit idi ime i Capacity control 1 hysteresis without energy saving Writing Reading 40 i x i i 4g Cod 030221401 rel 1 1 date 09 07 1998 39 Standard pCO for Air Conditioning units pLAN Reading 66 Compressor 2 operating hour carried out high part Whole Reading 68 Compressor 1 operating hour carried out low part Whole Reading 69 Compressor 2 operating hour carri
38. high low water temperature at outlet faulty ambient temperature water outlet external air supply air probe high current at humidifier no current at humidifier no water in humidifier eeprom malfunction interruption to the pLAN local network When a Serious alarm occurs in one of the units this unit is switched off and the stand by unit is switched on List of serious alarms flowmeter e mann fan thermal cut out fire smoke e unit black out The PCOCLKMEMO clock board installed in unit number 1 allows the cyclical rotation the timer and the address of the unit in stand by to be store in the clock s buffer RAM Following a black out the system recommences from the state before the black out same unit in stand by the cyclical rotation timer does not start from 0 but rather counts the hours already passed 10 LIST OF THE PROGRAMMABLE SETS When the factory values are inserted the machine is configured with the presence of the following devices Outlet water temperature probe Internal humidity Both the compressors Both the resistance Warm modulating valve Cold modulating valve Factory values being taken as machine parameters by the pCO if you answer yes to the first window of the Init configuration in the manufacturer s menu SELECTABLE QUANTITIES LEVEL RANGE PRE SET S C _ Fanhourthreshod assistance 0 999 1000 20h Compressor Lhourthreshold assistance 0 999 1
39. ing measured and on the permanence time the integration constant is selectable at the M MANUF TIME2 window The humidity control is only proportional The PROPORTIONAL BAND defines the area of the temperature humidity control The control effect is proportional to the deviation from the set point The DEAD ZONE defines an area near the set point in which no device is energised PROPORTIONAL CONTROL HEATING COOLING 100 100 DEAD ZONE SET POINT HALF OF TOTAL EM SETBAND gt HALF OF TOTAL STEP CONCEPT By step is meant an area of the proportional band which defines the values of switching on and off of a device e g compressors resistance humidifier etc MEANING OF STEP HOT STEP COLD STEP ISTERESI IIYSTERESIS ISTERESI HYSTERESIS e the hysteresis is expressed as half the range between switching on ON and switching off OFF Cod 4030221401 rel 1 1 date 09 07 1998 7 Standard pCO for Air Conditioning units pLAN 5 TEMPERATURE REGULATION DIAGRAMS 5 1 TWO COMPRESSOR UNIT WITHOUT THE ENERGY SAVING OPTION RAMPA ACQUA FREDDA COLD WATER RAMP GRADINO2 STEP2 GRADINO1 STEP1 ALTO LIMITE DEUMID HIGH LIMIT DEHUM 25 50 75 100 TESTE TEETER PCPS EEEE EE STEPPE SECTORS ELE LC PEE DESEO EET gt BANDA DELLA TOTALE BAND HALF OF THE TOTAL Factory values Compressorlset 25 Compressorl hysteresis 25 Compressor2set 75 Com
40. its to be rotated according to a time schedule with the possibility to leave one of them in Stand By ready in the case where one of the units in operation malfunctions Below is a schematised diagram of the connections which need to be made The connection between boards in the pLAN network is made using an AWG20 22 shielded cable twisted pair shield The boards are connected in parallel using terminal J 11 as reference CI NM WARNING make sure the order of connection is respected 222 21 Pe as 324 The following parameters manage the rotation of the units and are present only in the screen of unit number 1 They are listed and described below e Screen ANUF PARAM25 manuf branch Number Units indicates the total number of units involved the scheduled rotation the number set must also take into account unit number 1 e screen M_MANUF_PARAM25 manuf branch Reset Rotation if enabled this parameter resets the rotation this should be set after having completed the parameter installation procedures e screen M_MANUF_PARAM26 manuf branch Select Hours Minutes determines if the rotations are performed in minutes test only or in hours normal conditions e screen M_MANUF_PARAM26 manuf branch Type of Rotation if Cyclical the units in Stand By follow the order 1 2 3 1 etc if Op Time at the end of the r
41. l parameters Saving Poston tH Hysteresis 0 100 12ibinary resistance step generalparameters Poston tH Hysteresis 01 o Cold modulating valve GMenealpaamees set w 1 10 Warm modulating valve genemlparmetrs Stat O 0 Ed Cold 3 pointvae genemlparmetrs 00 Ed 100 10 Warm3pointvalve genemlparmetrs Stat 100 En 095 30 Humidification step generalparametes Position 000 5 Hysteresis _ 10 5 Dehumidification step generalparametes Poston 100 Hysteresis _ 0 098 5 Low temp limit stop dehumidification generalparameters Poston 100 Hysteresis e 0 35 High temp limit stop dehumidification general parameters Poston 5 Hysteresis 01 3 ee Drain enabling without voltage generalparameters N CO parameter 00 9 1 parameter PL 0 00 75 Number of Units engaged for Rotation general parameters 1848 0 Rotation sReset_ __ genemlpaamees 0 1 0 Select Hours Minutes of Rotation generalparameters Hours Minuts Hours Rotation Cycle Test genemlpaamees 1 10 0 Rotation Cycle Time generalparameters 16 0 Fanstartdelaytime o 099 sec Fanstopdelaytme 1
42. midifier being connected In the following tables the values of CO and Clare reported as a function of the nominal capacity columns and of the voltage rows C0 and C1 for F200MA single phase cylinders with a nominal capacity from 1 to 3Kg h OW WW Oo vO NIN OMe oyu gt gt gt gt C emOoiojoijojojojo o o Cod 4030221401 rel 1 1 date 09 07 1998 13 Standard pCO for Air Conditioning units pLAN C0 and C1 for l400TW three phase cylinders with nominal capacity from 23 to 42Kg h Nominal Capacity in Kg h 380 400 415 440 480 575 15 7 2 Programming of the humidifier Selection of the type of humidifier To select the type of humidifier to be controlled you must properly preselect 4 parameters in the masks intended for the humidifier under the manufacturer s password NOMINAL is the nominal steam capacity or maximum cylinder delivery that is available It is possible to preset values ranging from 1Kg h to 42 Kg h VOLTAGE is the voltage value of the power supply It is possible to preselect values ranging from 0 to 660 V PHASE NUMBER is the phase number of the power supply It is possible to preset 1 or 3 phases single phase or three phase TAM MODEL you select the model of amperometric transformer to be utilised By presetting 0 50 1 100 2
43. nals only one can be assigned as SHARED The remaining two terminals must be configured as PRIVATE v A SHARED and a PRIVATE Terminal must be of the same type Cod 4030221401 rel 1 1 date 09 07 1998 18 Standard pCO for Air Conditioning units pLAN Every pCO main board up to date PRIVATE terminals indications continuously A SHARED terminal is up to date by the pCO main board which is keeping the terminal under control in that particular moment EX PRIVATE PRIVATE pco 4 pco 1 Switching sequence PRIVATE PRIVATE l pco 2 3 In the picture above the SHARED terminal is associated to pCO main boards 1 2 3 4 but in this moment it is kept under control by pCO main board no 2 S is just a logic switch indicating which pCO main board is controlling the shared terminal at a certain time For switching to the next pCO main board push keys The switching sequence is 1 gt 2 gt 3 gt 4 gt 1 gt 2 9 waitfor the automatic switching sequence managed by the particular application program VERY IMPORTANT In the application standard air conditioning
44. ng conditions the compressors operate normally if you answer no in this window then the compressor steps are eliminated and only the ramp in action is maintained in the presence of the conditions which require that energy saving be started In the opposite case the compressors operate normally 6 4 MANUAL CONTROL This part of the program allows you to manually operate the unit s DEVICES thus excluding the operation of the pCO control but maintaining the interlock with the protections in order to ensure the security and integrity of the components being utilised To enable manual functioning itis necessary to carry out the operations described in the paragraph dedicated to the pCO keypad The manual state of the machine is identified by the appearance of the message Manual procedure on the last line of the display Cod 030221401 rel 1 1 date 09 07 1998 11 Standard pCO for Air Conditioning units pLAN 7 HUMIDITY REGULATION GRAPH Humidity regulation can be selected from the M_MANUF_CONF4 window in HUMIDITY CONTROL UNIT CONFIGURAT protected by the manufacturer s password DEHUMIDIFICATION can be carried out by means of the compressor starting selected in the mask HUMIDIFICATION M MANUF PARAM within the PARAMETRI GENERAL branch with capacity control of the cold water ramp through the reduction of the fan speed Dehumidification is enabled only if the ambient temperature falls within the alarm limits 50 FOR VAL
45. ng data to other network nodes pCO main board is nottransmitting messages No hardware and software problem pCO main board software not compatible or variables database not correct Contact Carel Service is just for working in a stand alone mode Atthe start up all Leds are ON and after few seconds OFF again After 5 15 secs elapse the led configuration is among those listed above NOTE If PCOADRxxxx board is removed or it fails while pCO main board is working it doesn t affect the correct program running but the next restart for instance after a black out or after having replaced a board the pCO main board doesn t recognize any address card and it is excluded from the network system v For a correct pLAN working every PCOADRxxxx card must be left inserted on its own pCO main board during the run time 8 2 pCO TERMINALS ADDRESS SELECTION Terminal address is programmed by means the dip switches set on the Terminal board rear side Dip switches are selectable without removing the Terminal plastic case Ref to the pCO main board addressing table for setting Terminal address and refer also to the picture below Microprocessor ON e 0000000 alui iram Dip switch Lo OFF pLAN telephone connector mp 5 ALWAYS OFF In the application standard air conditioning humidifier EPSTD C ZUB unit the dip switches configuration allowed for the pCO Terminal are th
46. ntegral P OO0O0O0000000000000008 Logi c J dehuni di fic N O f J Logic of the dehunidi fication rel ay Cod 030221401 rel 1 1 date 09 07 1998 32 OO000000000000000000 Step compressor 1 Jwthout energy sav Posi ti on 000 0 96 f OO00COOO00OO0000000008 Step compressor 2 Jwthout energy sav Posi ti on 000 0 96 f OO00COOOO000O0000000008 Step unl oader 1 J Jwthout energy sav Posi ti on 000 0 96 f OO000OOO00OC0000000008 Step unl oader 2 J fwi thout energy sav f Posi ti on 000 0 96 f OO0000000000000000008 Step compressor 1 energy saving f Posi ti on 000 0 96 f OO00COOO00OC000000008 Step compressor 2 fwth energy Posi ti on 000 0 96 f OO00COOO000O0000000008 Step unl oader 1 J energy saving Posi ti on 000 0 f OO00000O0000000000008 Step unl oader 2 fwth energy ng Posi ti on 000 0 96 f OO0000000000000000008 Step heater 1 J J Position 000 0 961 OOOOOOOOOOOOOOOOOOOO fStep heater 2 J Position 000 0 961 OO0000000000000000008 Step heater binary f contro Positi on 000 0 96 f OO00COOOO00OC000000008 Cool i ng 0 10V val ve f J J Begi n 000 0 96 f Standard pCO for Air Conditioning units in pLAN Position of the steps wth respect to the proporti ona band To better understand the functi on go to the paragraph Concept of step see regul ati on gr a
47. on the field where you are going to change an address push arrow keys for selecting another address For confirming your selection press ENTER key until the cursor is positioned on OK field Push Arrow keys for selecting Y Yes or N No and confirm pushing ENTER key If Yes data are stored in the memory IfNo Youcan change some value that couldn t be selected properly according with your pLAN strategy For exiting without storing changes into memory just wait for 30 seconds without pushing any key Repeat STAGE 1 and STAGE 2 for associating other Terminals to other pCO main boards present in pLAN TERMINAL RUNNING MESSAGES If the pCO main board controlling the Terminal is faulty orthere is some problem in communication or it was disconnected from the Terminal this message occours Board xx faulty where xx stands for the pCOmain board address If the Terminal doesn t receive any token message network syncro signal for at least 10 sec this message appears on the LCD This message corresponds to the PCOADDxxxx Green LED OFF information NO LINK Cod 4030221401 rel 1 1 date 09 07 1998 20 Standard pCO for Air Conditioning units pLAN 9 STAND BY The connection of pCO boards in a pLAN local network allows them to communicate with one another and exchange variables The main function of this exchange of variables is to allow all the units to be controlled by one single pCO terminal In addition it allows the un
48. oning units pLAN 2 2 ANALOG INPUTS AMBIENT TEMPERATURE PROBE AIR THROW TEMPERATURE PROBE OUTLET WATER TEMPERATURE PROBE EXTERNAL AIR INLET WATER TEMPERATURE PROBE AMBIENT HUMIDITY PROBE CURRENT MEASUREMENT PROBE IN THE HUMIDIFIER HUMIDIFIER INLET WATER CONDUCTIVITY PROBE 2 3 DIGITAL OUTPUTS 1 01 DEHUMIDIFICATION C2 N02 MAIN FAN ACTIVE UNIT C3 N03 ENERGY SAVING VALVE C4 NO4 DIFICATION HUMIDIFIER POWER REMOTE CONTROL SWITCH 5 5 PRESSOR 1 CAPACITY CONTROL HUMIDIF WATER LOAD C6 NO6 PRESSOR 2 CAPACITY CONTROL HUMID WATER DRAIN C 7 N07 T COLD VALVE OPENING COMPRESSOR 1 C 8 NO8 T COLD VALVE CLOSING COMPRESSOR C 9 NO9 or 9 9 T WARM VALVE OPENING RESISTANCE 1 C10 NO10 or C10 NA10 T WARM VALVE CLOSING RESISTANCE 2 C11 NO11 11 11 GENERIC ALARM SITUATIO 24 ANALOG OUTPUTS VGO YO COLD WATER RAMP VGO Y1 WARM WATER RAMP Connections In the following picture the wiring between pCO and devices is shown 220Vac 24Vac Go N oENN LL or 8 0 s 8 rares kaja BD Probes mir g EN Probe 7 8 E JPN 4 20 Be J19 AE Bo a 20ma BS p er E NL avs Carel NTC probe 4 Analogue output 1 0 10V
49. otation time the unit with the highest number of operating hours is placed Stand By referred to the number of operating hours of the main fan e screen ANUF_PARAM27 manuf branch Test Rotation Cycle sets the number of minutes for the rotation test e screen M_MANUF_PARAM27 manuf branch Rotation Cycle sets the number of hours of rotation in normal operation One further parameter is however present on all units e screen ANUF_CONF7 manuf branch Unit Configuration sets if the unit functions alone INDEPENDENT UNIT that is without being part of the rotation or in rotation UNIT IN ROTATION Cod 030221401 rel 1 1 date 09 07 1998 21 Standard pCO for Air Conditioning units pLAN After all these parameters have been correctly set the rotation reset should be performed using the Reset Rotation parameter and then the units Should be started IMPORTANT It is good practice for the units which are part of the rotation to have sequential addresses If for example an installation to be configured with 4 units in rotation and 2 independent units the first 4 units must have addresses from 1 to 4 and the other 2 must have addresses 5 and 6 When a critical alarm occurs in one of the units this unit may continue to function and the stand by unit is switched on List of critical alarms compressor high pressure compressor low pressure electrical element thermal cut out high low ambient temperature
50. phs As above As above As above Parameters relevant to the positi on of the conpressors capacity controls w th energy savi ng See Unit wth a conpressor in energy savi ng As above As above As above Presetti ng of of the step relevant to the resi stance heati ng See paragraph Concept of step As above As above Parameters for the regul ati on of the 0 10V nodul ati ng cooling val ve type The operati ng features are descri bed i n the paragraph Tenperature regul ati on graphs Cod 030221401 rel 1 1 date 09 07 1998 33 M 16 Heat i ng 0 10V valve f J n 000 0 f End 000 0 f OOOOOOOOOOOOOOOOOOOO Cool ing 3p val ve J J n 000 0 f End 000 0 f Heat i ng 3p valve J J n 000 0 f End 000 0 96 f OOOOOOOOOOOOOOOOOOOC Step huni di fi cati on f J 000 0 f Position Step dehumdific J 000 0 J Position Low tenperature flimt stop dehum f Position 000 0 f gh tenperature limit stop dehum f Posi ti on 000 0 96 f T Nomi n prod 00 kg hf Vol tage ooo v f Phase nunber 1 JTAM_nodel 050 J OOOOOOOOOOOOOOOOOOOO T Enabl e drain thout f vol tage N f Parameter 0000 Test Change Over P 00 ni nutes Change Over Period J 000 hours J Standard pCO for Air Conditioning units in pLAN As above Parameters for the
51. pressorl hysteresis 25 If factory capacity controlled compressors are utilised the steps of the compressors and its capacity controls coincide 5 2 TWO COMPRESSOR UNIT WITH THE ENERGY SAVING OPTION RAMPA ACQUA FREDDA COLD WATER RAMP GRADINO2 STEP2 GRADINO1 STEP1 ALTO LIMITE DEUMID HIGH LIMIT DEHUM 33 50 66 100 BANDA DELLA TOTALE BAND HALF OF THE TOTAL Factory values Compressorlset 49 Compressorl hysteresis 16 Compressor2set 82 Compressorlhysteresis 16 If factory capacity controlled compressors are utilised the steps of the compressors and its capacity controls coincide Cod 030221401 rel 1 1 date 09 07 1998 8 Standard pCO for Air Conditioning units pLAN 53 SINGLE COMPRESSOR UNIT WITHOUT ENERGY SAVING OPTION RAMPA ACQUA FREDDA COLD WATER RAMP GRADINO1 STEP1 ALTO LIMITE DEUMID HIGH LIMIT DEHUM 50 100 BANDA META DELLA TOTALE BAND HALF OF THE TOTAL Factory values Compressor set 50 Compressor hysteresis 50 If factory capacity controlled compressors are utilised the step of the compressor and its capacity control coincide 54 SINGLE COMPRESSOR UNIT WITH THE ENERGY SAVING OPTION RAMPA ACQUA FREDDA COLD WATER RAMP GRADINO1 STEPI ALTO LIMITE DEUMID HIGH LIMIT DEHUM BANDA META DELLA TOTALE BAND HALF OF THE TOTAL Factory values Compressorl set 66
52. rom the STAGE 1 procedure STAGE 2 first mask appears The configuration procedure is automatically cleared if no key is pushed within 15 seconds from the former key stroke Cod 030221401 rel 1 1 date 09 07 1998 19 Standard pCO for Air Conditioning units pLAN STAGE 2 Selection of Terminals associated with a pCO main board Terminal Config Press ENTER to continue Push ENTER key to Continue A new mask appears P 01 Adr Priv Shared Trml 09 Pr Trm2 none Trm3 16 Sh Ok No We now associate up to no 3 Terminals Trm1 Trm2 Trm3 to the pCO main board addressed 01 Fields LEGENDA P 01 Address of pCO main board connected to the Terminal In this case the address is 01 Trm x Terminal x 3 indicates the max number of terminals 3 which can be logically related to a single pCO main board The Terminal you are using for configuring the pLAN could not be among Trm1 2 3 indicated on the mask for instance it could have address 11 not shown in the mask and not associated to pCO main board no 01 Priv Shared Terminal attribute PRIVATE or SHARED see above If the Trm1 is Shared it means that it is associated with pCO main board n 01 and at leastto another pCO main board Trm2 is Private it means that it can be associated managed by only pCO main board no 01 PROCEDURE Enter key it allows to move the cursor to the mask fields in sequence Arrow keys When the cursor is positioned
53. s dedicated to work with only one pCO main board This terminal will receive and transmit data only to one its own pCO main board It means that all messages which appear on the display and leds will be driven by one pCO main board Every key stroke signal will be sent to one pCO main board A terminal is defined as PRIVATE by the user during an initial configuration procedure a builtin function in BIOS firmware Terminal Status Private or Shared cannot be changed during the run time for avoiding any system bad working PRIVATE terminals can also drive option a local serial printer SHARED pCO user terminal A SHARED terminal can be associated to two or more pCO main boards In a certain moment only one pCO main board can keep the shared terminal under control and sending or receiving commands to from a pCO terminal Switching a shared terminal from one to another pCO main board can be done in two ways Automatically Depending on the particular application program The EasyTools application program built in the pCO main board Eprom can seta dedicated variable for this aim Manually Pushing dedicated keys on pCO terminal keyboard A terminal is defined as SHARED the user during an initial configuration procedure a builtin function in BIOS firmware when it is possible to assign also the pCO main board associated address v Max no 3 terminals can be software driven by only one pCO main board Among these three termi
54. so pCO User Manual Repeat this procedure with all the other pCO main boards you are going to install into the network Address Terminals using the dedicated dip switches on the Terminal rear side CO main boards and Terminals if they have an external power supply powered ON At this point all the addresses are recognized by all the pCO main boards and Terminals 8 pLAN be ready to be logically configured see after NOTE The network nodes addressing procedure must be done and checked every time a new pCO main board or a new Terminal is linked to the network and when a new Eprom program is installed on a pCO main board If the user realize to have programmed wrong addresses the addressing procedure must be repeated from scratch 8 4 pLAN NODES LOGIC CONFIGURATION This chapter describes how to create logic relations among all the Terminals and pCO main boards connected and already addressed in pLAN Before starting this procedure check that every node address is properly programmed This procedure can be carried out using just one Terminal but with all the other Terminals connected to pLAN 8 5 USER TERMINALS LOGIC TYPES Before describing the config procedure a description aboutthe two modes how a Terminal can be configured is explained A pCO user terminal in the pLAN will be considered as PRIVATE or SHARED hardware is the same in the pLAN strategy PRIVATE pCO user terminal The terminal i
55. ter new service f password 0000 f Ju inu uu DE J gt OOOOOOOOOOOOOOOOOOOO Standard pCO for Air Conditioning units in pLAN Presetting of the proportional band and of the neutral zone for the regul ati on di ty proportional band Maxi mum preset producti on Automatic start enabling after voltage drop Enabling disabling On Off remote fromdigital input Presetti ng of the offset parameter energy savi ng Enabling of the temperature set point compensati on Parameters for the conpensati on Values that limt the temperature range Val ue to be subtracted fromthe tenperature set poi nt Val ue to be added to the tenperature set poi nt As above for the hunidity Val ues wthin which the outl et water tenperature has to be nt ai ned Address for the serial connecti on to an external supervi sory system New user password presetti ng Cod 4030221401 rel 1 1 date 09 07 1998 31 Standard pCO for Air Conditioning units in pLAN MENU PROG BUTTON MANUF PASS Enter manufacturer f password J 0000 ht password J Submenu of the manufacturer s branch Unit configuration f To preset the item bei ng request ed General parameters f you move downwards with arrow and Ti ni ng and presetti ng is made wth ENTER Cl ock board Nj Pri nter N f Supervi sor board Nf The devices present in the machi ne are enabl ed MENDA RARER AN J MANUF
56. the value pre setting masks by pressing the button the first time the cursor goes to the first parameter of the window When pressing again the selected parameter is confirmed and the cursor moves to the following parameter Afterwards from the last parameter you return to the position on the upper left cursor in the 0 0 position of the display ENU button Go to the MAIN MASK window NFO button Go to the next pCO boards ANUT button Go to the M_VIS_TIMER1 window PRINT button Usable in the version with printer button Go to the M_SYNOPTIC1 window HOUR button Go to M REG CLOCK window SET button Go to the M_CALC_SETP window PROG button The password is requested If properly introduced you move to the M_PARAM_USER3 window MENU PROG buttons The buttons must be pressed and released simultaneously The password is requested If properly introduced you move to the M_MANUF_PASS window 122 LED At the side of each button a green LED is found which lights up when the associated button is being pressed and indicates in which group of masks the user is situated Three other LEDs are placed under the rubber buttons and indicate respectively 1 ON OFF button green LED indicates that the instrument is ON and operating 2 ALARM button red LED indicates the presence of an alarm condition 3 ENTER button yellow LED Indicates that the instrument is properly supplied Cod 4030221401 rel 1 1 date 09 07 1998 26 13 TREE
57. ueecsseueeceseueeceseuseceseueecsseueecsseueecsssueesesenes 15 8 PLAN 16 8 1 PCO MAIN BOARD ADDRESS nh ene 16 8 2 PCO TERMINALS ADDRESS 17 8 3 NETWORK NODES ADDRESSING PROCEDURE 18 8 4 PLAN NODES LOGIC 18 8 5 USER TERMINALS LOGIC TYPES 18 8 6 PLAN CONFIGURING PROCEDURE eere UU D a Su Sl u D S u eaae Q SDS u Pa uu 19 O STAND BY l au 21 10 LIST OF THE PROGRAMMABLE SETS 22 11 ALARM MANAGEMENT eE 25 12 USER INTEREA CE iere ets ee eee eee ree eae eee eoe eee e eae eee eee ee eee aee eco ee es eee ee aeo ee esee eee de Teo roro ee eee aeo eres este edes 26 2 T KEYPAD Lat ete emite Sia ate trie det t dedit 26 12 2 SIS Sma Sia as S oet ete cabo o ee retos tes co hec tete e ote Fed ene 26 13 TREE OB THE MASKS 27 TA 35 15 DATABASE OF THE SUPERVISOR
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