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+030220730 r_1

1. 2 N a5 Expansion Line EV Driver board tLAN R C34 x No5 1 on GND B4 V ma Go B1 B2 B3 IDS 1D3 onl i Key SPV 8 F G i Janb on Y evo 108 102 i 5 5 E Ls ete s 3 lt g 2 2 pressure be Wio li g 3 2 2 probe 7375 a a A 4 n if 2 z a temperature T KI a probe To program key RS485 H digital option ni L imput A me Line To serial link Fig 7 a DIN rail version EV Driver Expansion 7 7 EV Driver C2 een Co uc ine L tLAN H DR 2 Tx Rx GND 1 UC ow I Programming Mey Serial board z 3 pressure oj ofj probe H K temperature probe _ to O To serial link J manal N Fig 7 b 1 0 layout pC Description Expansion Description Bl Control probe Evaporator inlet ambient B5 Output probe in common with 2 evaporators only with 2 circuits B2 Protection probe evaporator outlet outlet B6 Circuit 2 protection probe 24 evaporator output B3 Condenser outside temperature probe B7 2 condenser temperature probe B4 universal Condenser pressure probe
2. r17 Cooling compensation constant U 50 5 0 0 1 0 0 51 RAW 51 Analog r18 Maximum distance from the set point U 03 20 0 Q F 01 03 2 52 RAW 52 Analog r19 Start compensation temperature in cooling mode U 40 176 0 Q F 0 1 30 0 53 R W _ 53 Analog r20 Start compensation temperature in heating mode U 40 1760 Q F 01 0 54 R W _ 54 Analog r21 Second cooling set point from external contact D r3 14 C F 0 1 12 0 55 R W _ 55 Analog r22 Second heating set point from external contact D r15 rl6 C F 0 1 40 0 l 56 R W _ 56 Analog 127 Enable accumulation vessel suppression F 0 3 flag 1 0 88 R W 216 Integer 0 Disabled 1 Enabled in coo 2 Enabled in Heat 3 Always enabled 128 Minimum time to determine low load conditions F 0 999 js 1 60 89 R W _ 217 Integer r29 Low load differential in chiller mode F 03 50 0 g F 01 3 0 58 R W 58 Analog r30 Low load differential in heat pump mode F 0 3 50 0 g F 0 1 3 0 59 R W 59 Analog 31 Heating compensation constant U 5 0 5 0 0 1 0 0 60 R W 60 Analog Table 4 i 4 3 10 Firmware parameters F r display parameter and description default min max U O M variat def visibility supervis Modbus variabile type indicat level variable H96 Software version Driver 2 D 0 999 flag XV 4 R 132 Integer H97 Software version Driver 1 D 0 999 flag V 3 R 13
3. uC 030220731 rel 1 4 26 10 2009 6 Condenser fan control modules The four holes for fastening the speed control board have a diameter of 4 mm and the cen ned 3 5 mm from the edges of the board The boards are supplied with 4 fasteners H015 mm tre is positio code A B C D E MCHRTF20A0 43 100 50 107 32 MCHRTF40A0 43 100 50 107 46 MCHRTF60A0 75 100 82 107 46 MCHRTF80A0 75 100 82 107 64 RS485 serial card codeMCH2004850 oo oe N 5 lt is be a 31 i 56 Ix gt q gt g lt t 59 g Fig 8 f 62 uC 030220731 rel 1 4 26 10 2009 Description Code uC single circuit 2 compressors panel mounting MCH2000000 uC single circuit 2 compressors panel mounting 20 pcs multiple package MCH2000001 uC single circuit 2 compressors DIN rail version MCH2000010 uC single circuit 2 compressors DIN rail version 10 pcs multiple package MCH2000011 uC expansion board for 2nd circuit maximum 4 compressors MCH2000020 uC expansion board for 2nd circuit maximum 4 compressors 10 pcs multiple package MCH2000021 RS485 optional board for yC panel version MCH2004850 RS485 optional board for yC DIN rail version FCSER00000 Programming key for y
4. 20 3 9 Reverse cycle air cooled condensing unit v2 3 10 Water cooled condensing unit without reverse CYCIO sessssssessssesssseseseaseessssnsetenseseet 22 3 11 Reverse cycle water cooled condensing UNIt sssssssesesssessssessussseesussessssssseissssensaseesnsee 23 4 PARAMETERS 25 AV General paraMeleTS mnjnnnunsineineen onae iei 25 AD MEMU SMOGU E enana a a E 25 4 3 Paha MeterstaDlOSi nsei inan a n 26 5 DESCRIPTION OF THE PARAMETERS 32 6 TABLE OF ALARMS 49 7 CONNECTIONS ACCESSORIES AND OPTIONS 53 Ti COMM On Aa aM Ys ssissssscissstcicescsascuhiosssshsscadcansoudesdssstun testes Seasduds aa iiie 53 72 Expansion card 54 73 EVD4 Electronic expansion valve driver 4 74 Fan speed control board code MCHRTF ssssssssssssssessussssssssssssssssssussssssasassesssssesssaseesnsesee 55 75 Fan ON OFF control board code CONVONOFFO sesssssssssssssesssssssssssssssssssseussssesssssessnsssen 55 76 PWM to 0 to 10Vdc or 4 to 20 mA conversion board for fans code CONVO 10A0 55 77 Minimum and maximum fan speed Calculation ssssssscsssssessussssssussssssssssessssessessesssesees 55 78 Programming key code PSOPZKEYAO a TIRA85 Seral OPU Nman is nana a ankin 710 Remote terminal for C2 cecssssssssssssssssssssssessssessssssssssssssnsstsssssessstassesenasessnensesennseseesnsssee 8 DIMENSIONS 61 9 CODES 63 10 TECHNICAL SPECIFICATIONS AND SOFTWARE UPDATES 64 10 1 Technical specifications
5. Closing current to earth 5 mA Maximum closing resistance 50 W B1 B2 B3 B4 NTC CAREL temperature probes 10 kW at 25 C The response time depends on the component used typical value 90 s B4 NTC temp probes 10 kW at 25 C or CAREL 0 to 5 V ratiometric pressure probes SPKTOO R Fan output Control signal for CAREL modules MCHRTF CONVONOFF and CONVO I0A Phase width modulation settable width or modulation of the duty cycle o load voltage 5V 10 Short circuit current 30 mA Minimum output load 1 kW Front panel index of protection Panel mounting version IP55 DIN rail version IP40 Storage conditions 0170 C humidity 80 rH non condensing Operating conditions 0755 C humidity lt 90 rH non condensing Degree of pollution ormal Cat of resist to heat and fire D RU94 VO PTI of the insulating materials _ All the insulating materials have PTI2250 V Software class and structure A Period of electric stress across Long insulating parts Homologations CE RU File El98839 sez 16 Fig 10 a Analogue inputs Table10 a Note all the relays must have the common terminals C1 2 C3 4 C6 7 C8 9 connected together Functional characteristics Resolution of the analogue inputs Temperature probes range 40180 C 0 1 C Temperature measurement error Range 20120 C 0 5 C excluding probe Range 40T80 C
6. ssssssscsssssesssssesssnssssssnsessssssesssnssssusnssssassssssnssseanessessnnsesanssesnsesee 64 TEA SONWAN CN ACS n E E A E encod 65 uC 030220731 rel 1 4 26 10 2009 5 6 uC 030220731 rel 1 4 26 10 2009 1 INTRODUCTION 1 1 General description The pC is a new compact CAREL electronic controller the same size as a normal thermostat for the complete management of chillers and heat pumps it can control air air air water water water and condensing units 1 1 1 Main functions e control of the water inlet and evaporator outlet temperature e defrost management by time and or by temperature or pressure e fan speed control e complete alarm management connection to serial line for supervision telemaintenance e elimination of the expansion vessel Driver function e Management of electronic expansion valves 1 1 2 Controlled devices compressor condenser fans reversing valve e water pumps for evaporator and or condenser and outlet fan air air e antifreeze heater e alarm signal device 1 1 3 Programming CAREL offers the possibility to configure all the unit parameters not only from the keypad on the front panel but also using e a hardware key e a serial line 1 2 User interface 1 2 1 Display The display features 3 digits with the display of the decimal point between 99 9 and 99 9 Outside of this range of measurement the value is automatically displayed without
7. the further the temperature moves away from the heating set point r03 At the end of the differential r12 2 i the time will be the minimum set by parameter r11 i i i 1 r11 t t gt L i 1 i temperaturw i 7 a gt r03 ee r03 r12 deactivation differential Fig 5 b h 46 uC 030220731 rel 1 4 26 10 2009 Minimum Cooling set point r13 Establishes the minimum limit for setting the Cooling set point Maximum Cooling set point r14 Establishes the maximum limit for setting the Cooling set point Minimum heating set point r15 Establishes the minimum limit for setting the heating set point Maximum heating set point r16 Establishes the maximum limit for setting the heating set point Cooling compensation constant chiller mode r17 Sets the coefficient that controls the cooling compensation algorithm In cooling mode if r17 is positive the set point increases as the outside temperature increases measured by the outside probe if on the other hand r17 is negative the set point decreases as the outside temperature increases This difference in the set point from the set value can have a maximum absolute value equal to the set ting of r18 The values for the parameters shown on the graph are r17 2 r01 25 r19 32 and r18 5 Key temperature time external temperature probe B3 B4 comp start temperature r19 positive compensation r17 2 se
8. 3 5 WATE ATER chiller 3 5 1 Single circuit 3 5 2 Two circuits X XK Fig 3 e b 16 uC 030220731 rel 1 4 26 10 2009 3 5 3 Ttwo circuits 2 evaporators Key water condensing temperature probe 1 and 2 condensator 1 and 2 flow switch outlet temperature probe outlet evaporator probe 1 and 2 antifreeze heater 1 and 2 evaporator CO W AININ e water pump 9 compressor 1 10 _ high pressure 1 and 2 11__ compressor overload 1 and 2 12__ low pressure 1 and 2 13 __ compressor 3 14 compressor 2 15 compressor 4 16 _ inlet evaporator pressure Qe i Fig 3 e c 3 6 WATE ATER heat pump with reversal on gas circuit 3 6 1 Single circuit B3 4 E Key condenser probe condenser flow switch outlet evaporator probe antifreeze heater reversing valve inlet evaporator probe compressor 1 9 _ high pressure 10 compressor overload 11 __ low pressure 12 __ water pump 13 compressor 2 OO W D JOT AININ uC 030220731 rel 1 4 26 10 2009 7 Key 1 water condensing temperature probe 1 and 2 2 condensator 1 and 2 3 __ flow switch 4 outlet evaporator probe 5 outlet evaporator probe 1
9. uC 030220731 rel 1 4 26 10 2009 Table 7 a 53 7 2 Expansion card This device allows the uC to manage the second refrigerant circuit on chillers heat pumps and conden sing units with up to 4 hermetic compressors The following figure shows the connection diagram for the pC expansion card code MCH200002 EV Driver 2 N E P C Sees ze peste ll high press I remote ON OFF cond probe HY outlet probe inlet probe r or m a H en erature He A t LAN th jie N L i 84l pc Line ddidi idill Li a 2 HC Top D xpansion boal 1 Bottom i Te Z erscscascr oie ant aatan ALU iiec elo aa Pa An 3 multi funct multi funct Fig 7 c NOTE The expansion features two LEDs on the main board to see these remove the top or bottom door which display its status by the following messages ON Flashing green LED Board powered Board powered and serial communication with uC in progress red LED 1 flash Probe fault alarm 2 flashes Zero crossing alarm mains frequency not detected 3 flashes Serial communication alarm with EVD 4 flashes Serial communica
10. Note In the event of flow alarms with automatic reset 10 attempts are made to restart the pump every 90 seconds for a maximum time of P02 after the 10 attempts the alarm becomes manual reset With the second pump the attempt consists in switching over the pump that is on with the same logic Disable load default values H22 If this parameter is set to 1 it disables the possibility of restoring the default parameters using the PRG button at power ON select supervisor protocol H23 establishes the protocol used for the connection to the supervisor from the serial board RS485 H23 0 CAREL protocol baud rate 19200 H23 1 Modbus protocol e Alarm settings parameters P Flow switch alarm delay when starting pump P01 Establishes a delay in the recognition of the flow switch alarm when starting the pump this allows the flow rate to stabilise In the event of alarms the compressors are stopped immediately ignoring the times Flow switch alarm delay in steady operation P02 Establishes a delay in the recognition of the flow switch alarm in steady operation so as to filter any variations in flow rate or air bubbles present in the water circuit In the event of alarms the compressors are stopped immediately ignoring the times Low pressure alarm delay at compressor start P03 Establishes a delay in the recognition of the low pressure alarm when the compressor starts so as to allow stable operating conditions t
11. incidental patrimonial of coverage punitive special or consequential in any way caused damages be they con tractual out of contract or due to negligence or other responsibility originating from the installation use or inability of use of the product even if CAREL or its branch offices affiliates have been warned of the possibility of damage Disposal of the product In reference to European Community directive 2002 96 EC issued on 27 January 2003 and the related national legislation please note that 1 we cannot be disposed of as municipal waste and such waste must be collected and disposed of separately 2 the public or private waste collection systems defined by local legislation must be used In addition the equipment can be returned to the distributor at the end of its working life when buying new equipment 3 the equipment may contain hazardous substances the improper use or incorrect disposal of such may have negative effects on human health and on the environment 4 the symbol crossed out wheeled bin shown on the product or on the packaging and on the instruc tion sheet indicates that the equipment has been introduced onto the market after 13 August 2005 and that it must be disposed of separately 5 in the event of illegal disposal of electrical and electronic waste the penalties are specified by local waste disposal legislation rg WARNING separate as much as possible the probe and digital input signal 4 eens c
12. 0 150s 1 20 l 31 R W 59 Integer fan air air c08 Delay in switching OFF the compressor after switching OFF the pump U 0 150 min 1 1 32 R W 60 Integer inlet fan air air c09 Maximum compressor operating time in tandem U 0 60 min 1 0 33 R W 6l Integer c10 Compressor 1 timer D 0 800 0 100 hours 0 1 0 90 R 90 Analog cll Compressor 2 timer D 0 800 0 100 hours 0 1 0 91 R 91 Analog c12 Compressor 3 timer D 0 800 0 100 hours 0 1 0 92 R 92 Analog cl3 Compressor 4 timer D 0 800 0 100 hours 0 1 0 93 R 93 Analog c14 Operation timer threshold U 0 100 100hours 1 0 34 R W 162 Integer c15 Hour counter evaporator pump fan 1 D 0 800 0 100 hours 0 1 0 94 R 94 Analog cl6 Hour counter condenser backup pump fan 2 D 0 800 0 100 hours 0 1 0 95 R 95 Analog c17 Minimum time between 2 pump starts U jl 150 min 1 30 35 R W 163 Integer c18 Minimum pump ON time U 1 15 min 1 3 36 R W 164 Integer Table 4 d uC 030220731 rel 1 4 26 10 2009 27 4 3 5 Defrost setting parameters d display parameter and description default min max U O M variat def visibility supervis Modbus variabile indicat level variable type dol Defrosting cycle Condenser antifreeze U 0 Flag 1 0 7 RW 7 Digital 0 no 1 s con sbrinamento unificato yes with shared defrosting d02 Time or temp press based defrosting U 0 2 Flag 1 0 D 90 R W 218 Integer 0 time 1 temp press 2 pressure start tempera
13. 11 1 1 Notes for version 1 5 a improved B00 10 b optimized the management of partialization valve with semihermetic compressors 11 2 notes for version 1 6 added part load in high pressure see parameter P04 added defrost option start by pressure end by temperature see parameter D02 2 added preventive fan operation function for high condensing temperature see parameter F14 added integrated Modbus protocol see parameter H23 added direct correspondence between D I and compressor D O for condensing units only see parameter r05 3 f Added alarm relay management see parameter P21 Pang 1 3 Notes for version 1 7 refined auto start function in antifreeze optimised exchange of variables over the Modbus protocol improved set point compensation based on the outside temperature added minimum pump operating time optimised defrost with semi hermetic compressors Pang uC 030220731 rel 1 4 26 10 2009 65 Note CAREL CAREL INDUSTRIES HQs Via dell Industria 11 35020 Brugine Padova Italy Tel 39 049 9716611 Fax 39 049 9716600 e mail carel carel com www carel com Agenzia Agency CAREL reserves the right to modify the features of its products without prior notice 030220731 rel 1 4 26 10 2009
14. 15 50 60 Hz Maximum power input 3W Fuse compulsory in series with the power supply to the pC 315mAT say To 12 pin connector Max current 2 A for each relay output extendable to 3 A for one single output 200 m 190 Vac Relays Max current at 250 Vac EN60730 resistive 3A Inductive 2A cos 0 4 60 000 t cycles g wW S 250 Vac 30 Vdc UL Resistive 3A 1 FLA 6 LRA cos 0 4 30 000 cycles z WY AG 120 V coso 0 7 For further information refer to the characteristics shown in Figure 10 a 50 E os C 0 S i WAR Minimum interval between communications each relay 12 s the manufacturer 5 A SINE ASE 7 JAC 250 V cos 0 7 of the unit that the device is integrated into must ensure the correct configuration z n TNR Seer so as to respond to this specification 5 10 ILA SS Type of microswitching 1 C S SS IN Za Insulation between relays in group A functional 5 5 30 Vdc SSS Insulation between the relays in group A and the very low voltage parts 3 120 Vac cos 0 4 7 reinforced 2 250 Vac cos 0 4 Insulation between relays in group A and the signal relays primary B0 Vdc o Insulation between the signal relays and the very low voltage parts reinforced 0 1 2 3 4 5 Insulation between the relays and the front panel reinforced Digital inputs Electrical standard voltage free contacts corrente sui contatti A
15. 25 R W 25 Analog FO7 Fan shut down differential in Cooling mode U 0 50 0 C F 10 5 0 FN 28 R W 28 Analog Fan shut down differential pressure in Cooling mode 0 F5 bar 0 5 0 FP 27 RW 27 Analog F08 Temperature value for max speed in Heating mode U 40 0 C 0 35 0 FN 30 R W 30 Analog Pressure value for max speed in Heating m 12 bar 0 3 0 FP 29 R W 29 Analog F09 Differential temperature value for max speed in Heating mode U 0 50 0 C F 0 5 0 FN 32 R W 32 Analog Differential pressure value for max speed in Heating 0 F08 bar 0 4 0 FP 31 RW 31 Analog F10 Differential temperature to turn OFF the fan in Heating U 0 F08 C F _ 0 5 0 FN 34 R W 34 Analog Differential pressure to turn OFF the fan in Heating 0 30 0 bar 0 3 0 FP 33 R W 33 Analog F11 Fan starting time U 0 120 S 1 0 F 51 R W 179 Integer F12 Triac impulse duration fan start F 0 10 S 1 2 F 52 R W 180 Integer F13 Fan management in defrost mode F 0 2 Flag 1 0 F 53 R W 181 Integer 0 Disabled fans 1 Fan in chiller mode 2 Max speed after defrost F14 Fan on time when starting in high condensing temperature U 0 999 S 1 0 FN 91 R W 219 Integer Table 4 f 28 uC 030220731 rel 1 4 26 10 2009 4 3 7 Unit setting parameters H display indicat parameter and description default level min max U 0 M variat def visibility supervis variable Modbus variabile type HO1 Unit model O air_air unit 1 air_a
16. 4 water water Chiller B1 B2 single circuit B2 Not used Not used B6 Not used Not used B1 B5 two circuits 5 water water heat pump rev on gas cooling B1 B2 single circuit B2 B3 B4 B6 B7 B8 B1 B5 two circuits heating B1 B2 single circuit B3 B3 B4 B7 B7 B8 B1 B5 two circuits 6 water water heat pump rev on H O cooling B1 B2 single circuit B2 Not used B4 B6 Not used B8 B1 B5 two circuits heating B3 B2 Not used B4 B6 Not used B8 _ Air cooled condensing unit B3 B4 B7 B8 Air cooled condensing unit rev on gas B3 B4 B7 B8 _Water cooled condensing unit B3 B4 B7 B8 10 Water cooled condensing unit rev on gas B3 B3 B4 B7 B7 B8 Table 5 a Min max voltage and pressure values From 09 to 12 sets the minimum maximum voltage and pressure for the ratiometric signal Probe calibration From 13 to 20 calibrates the corresponding sensor from B1 to B8 Digital filter 21 Establishes the coefficient used in the digital filtering of the value measured High values for this parameter will eliminate any continuous disturbance at the analogue inputs however decrease the promptness of measurement The recommended value is 4 default Input limit 22 Establishes the maximum variation that can be measured by the probes in one unit program cycle in practice the maximum variations allowed in the measurement are between 0 1 and 1 5 units bars C or F depending on the probe and the unit of measure appro
17. 4 compressor 4 1 compressore 5 time delay between two compressors OFF routines time delay before the capacity controlled routine oO 4 on Stop delay between compressors Ore c05 This sets the stop delay between the compressors ON Legenda TI ve 1 2 signal N 2 1 signal ot uC 030220731 rel 1 4 26 10 2009 Delay on power up reset power supply c06 At power ON when the controller is physically switched ON the activation of all the outputs is delayed so as to distribute the power input and protect the compressor against repeated starts in the event of frequent power failures This means that after the delay time the controller will start to manage the outputs based on the other times and the other normal functions Compressor start delay from pump outlet fan air air ON c07 In cooling and heating operation if the operation of the pump outlet fan is subject to the controller para meter H05 2 the compressor is started when required after the set time from the activation of the water pump or outlet fan in air air units If the pump outlet fan is always ON HO5 1 and consequently does not depend on the control logic the com pressor is started after the set time from when the unit starts Key 1 inlet fan 2 pump 3 compressor 4 time delay between pump inlet fan and compressor Pump outlet fan air air start delay from compressor OFF c08 In cooling and heating operation
18. 63 R W 191 Integer P02 Flow switch alarm delay during steady operation U 0 120 js 1 5 64 R W 192 Integer POS Low pressure alarm delay at start up U 0 200 s l 40 65 R W 193 Integer P04 Enable part load in high pressure U 0 3 int 1 0 P 66 R W 194 Integer P05 Alarm rese F 0 6 Int 1 0 z 67 R W 195 Integer 0 HP1 2 LP1 2 A1 2 Lt manual 1 HP1 2 LP1 2 A1 2 Lt automatic 2 HP1 2 A1 2 Lt manual LP1 2 automatic 3 HP1 2 manual LP1 2 A1 2 Lt automatic 4 HP1 2 LP1 2 manual A1 2 Lt automatic 5 HP1 2 LP1 2 thrice per hour manual A1 2 Lt automatic 6 HP1 2 LP1 2 thrice per hour manual A1 2 Lt manual P06 Cooling heating logic F 0 1 Flag 0 19 R W 119 Digital O 3 Chiller 8 Heat pump 1 4 Heat pump Chiller P07 Low pressure alarm from transducer F 0 1 Flag 1 0 P 68 R W 1196 Integer 0 Disabled 1 Enabled P08 Digital input 1 selection F 0 22 Flag 1 0 69 R W 1197 Integer N 1 FL man 2 FL auto 3 TP man 4 TP auto 5 TCl man 6 TCI auto 7 TC2 man 8 TC2 auto 9 Cool Heat 10 Cool Heat Delayed 11 LA man 12 LA auto 13 2 Set 14 2 Set timer 15 stop defrost c 1 16 stop defrost c 2 17 start defrost c 1 18 start defrost c 2 19 step 1 20 step 2 21 step 3 22 step 4 P09 Digital input 2 selection F 0 22 Flag 0 70 R W 198 Integer P10 Digital input 6 selection F 0 22 Flag 1 0 X 71 RAW 199 Integer Pll Digital input 7 selection F 0 22 Flag 1 0 X 72 R W 200 Integer P12
19. Access direct parameters selection as for button on uC Press for 5 s Select item inside the programming environment and display direct parame Press once er values confirm the changes to the parameter F Select lower item inside the programming environment Press once or hold Decrease value Switch from standby to heat pump mode P6 0 and vice versa Press for 5 s D F Immediately reset the hour counter inside the programming environment _ Press for 5 s E D _ Start manual defrost on both circuits Press for 5 s D F E Display the terminal Info screen Press for 5 s Table7 i Technical specifications of the display Type graphic FSTN Backlighting green LED Graphic resolution 120 x 32 Size of active area 71 95 x 20 75 Size of display area 76 x 25 2 Power supply From RJ12 power supply Materials Transparent front panel Transparent PC Grey case back piece Charcoal PC ABS wall built in Keypad Silicon rubber Transparent glass frame Transparent PC Table7 j Technical specifications of the power supply RJ12 Power supply Voltage 24 Vac 10 15 class 2 Current input at 24 Vac 100 mA Compulsory external fuse 250 mAT Transformer 3 VA safety Power supply terminals removable screw step 5 mm wire cross section 0 2 to 2 5 mm2 RS485 terminals removable screw step 3 5 mm wire cross section 0 2 to 2 5 mm2 Telephone connector 6 way RJ12 Index of protection IP20 Self extinguishing cat A UL94 HB Table7 k General characteristics Front pan
20. B8 universal 2 condenser pressure probe ID1 Flow switch thermal overload circuit 1 cooling heating end defrost circuit 1 step 1 condensing unit second set point IDe Flow switch thermal overload circuit 2 end defrost circuit 2 step 4 condensing unit second set point ID2 Flow switch thermal overload 1 circuit cooling heating end defrost circuit 1D7 Flow switch thermal overload circuit 2 end defrost circuit 2 step 4 1 step 2 condensing unit second set point condensing unit second set point ID3 High pressure circuit 1 IDs High pressure circuit 2 ID4 Low pressure circuit 1 ID9 Low pressure circuit 2 ID5 Remote ON OFF reverse cycle condensing unit if reversible ID10 Yl Ramp circuit 1 condenser Y2 Ramp circuit 2 condenser C1 2 NO1 Compressor 1 C6 7 NO6 Compressor 3 1 in 2nd circuit C1 2 NO2 Heater or reversing valve in 1st circuit C6 7 NO7 Heater or reversing valve in 2nd circuit G 4 NO3 Fan 1 evaporator pump 8 9 NO8 Fan 2 condenser pump backup 3 4 NO4 Compressor 2 capacity control compressor 1 8 9 NO9 Compressor 4 capacity control compressor 2 or reversing valve circuit 1 or reversing valve circuit 2 C5 NO5 Alarm or reversing valve C10 NO10 Warning or reversing valve circuit 2 Any of the options for P08 can be selected see Table 5 11 Any of the opti ions for P08 can be selected except for E I and E I delay
21. G3 4 OFF O gt 34 R EVD 2 warning Digital error PHI Low pressure circ 1 warning Signal on display PH2 Low pressure circ 2 warning Signal on display Table 6 a Note The warning relay differs from the alarm relay as it is only activated for warnings that is signals only which have no direct effect on the operation of the unit and the display does not show the alarm symbol bell Compressor N B The alarm relating to the circuit with the fault must not interact with the operation of the other circuit as long as the condenser is not shared in common uC 030220731 rel 1 4 26 10 2009 49 50 HP1 High pressure circuit 1 The alarm is detected irrespective of the status of the pump and the compressors The compressors corresponding to circuit 1 are immediately stopped ignoring the set protection times the buzzer and alarm relay are activated and the display starts flashing The fans corresponding to the condenser in circuit 1 are activated at maximum speed for 60 s so as to oppose the alarm situation after which they are switched OFF This alarm may also be generated when the high pressure limit is exceeded valid only when the pressure transducer is fitted set by the parame ter P18 which to be enabled must be greater than 3 0 bars due to the corresponding hysteresis HP2 High pressure circuit 2 As for HP1 but relating to c
22. General advice Digital operation EPb EEPROM error at the start up Automatic OFF OFF OFF OFF OFF OFF OFF 35 R General alarm Digital ESP Expansion Error Automatic OFF OFF OFF OFF OFF O 35 R General alarm Digital EL1 2 Zero cross Automatic 100 ON ON 42 R Fan advice Digital dF1 2 Defrosting error Automatic ON 40 R General warning Digital d1l 2 Defrost on circuit in 5 5 gt Signal on display a question Al Frost alarm circ 1 Depends on P05 OFF CI 2 OFF 1 0 31 R Circuit 1 alarm Digital A2 Frost alarm circ 2 Depends on P05 OFF G3 4 OFF 2 O 32 R Circuit 2 alarm Digital Ht High temperature Automatic a ON ON 41 R Temperature advice Digital Lt Low ambient temp Depends on P05 ON ON 41 R Temperature advice _ Digital AHt High temperature at the Automatic OFF OFF OFF ON 40 R General warning Digital start up ALt Low temperature at the Automatic OFF OFF OFF ON 40 R General warning Digital start up ELS Low supply voltage Automatic ON 40 R General warning Digital EHS High supply voltage Automatic OFF OFF OFF OFF OFF OFF OFF 35 R General alarm Digital Ed EVD 1 tLAN error Automatic OFF CI 2 OFF ON 33 R EVD 1 warning Digital Ed2 EVD 2 tLAN error Automatic OFF G3 4 OFF ON 34 R EVD 2 warning Digital SH1 EVD 1 superheat alarm OFF CI 2 OFF ON 33 R EVD 1 warning Digital SH2 EVD 2 superheat alarm OFF G3
23. JRE parameters F1 Se level value F1 a E parameters Fn f i parameter values F1 Fig 4 a uC 030220731 rel 1 4 26 10 2009 25 4 3 Parameter tables The following tables show of the parameters divided by type family e g compressor probes fans etc e Key to the parameter tables Level default S super user F factory D direct Visibility The visibility of some groups depends on the type of controller and the value of the parameters D defrost if D01 1 F fan if F01 1 N NTC probe if 04 08 2 P pressure if 04 08 3 V driver if H08 1 3 X expansion if HO8 2 3 always present Supervisor variables R W supervisor read write parameter R supervisor read only parameter 4 3 1 Probe setting parameters display parameter and description default min max U O M variat default visibility supervis Modbus _ variabile indicat level variable type 01 Probe type B1 0 not present F 0 1 Flag 1 1 1 R W 1 Digital 1 present 02 Probe type B2 not present F 0 1 Flag 1 0 2 RW 2 Digital 1 present 03 Probe type B3 0 not present F 0 2 lag 1 0 7 14 RW 142 Integer 1 NTC Cond Probe 2 NTC Out Probe 04 Probe type B4 not present F 0 3 lag 1 0 15 R W 143 Integer ON OFF D I NTC Out Probe ratiometric cond Probe 5 Vdc 05 Probe type B5 0 not present F 0 1 Flag 1 0 X 3 RW 3 Digi
24. P09 P10 P11 P12 Configuration of digital inputs ID2 ID6 ID7 and 1D 10 respectively as per the above table for digital input ID1 Nota cooling heating 9 10 cannot be set on P10 P11 P12 and P14 Select input B4 if 04 1 P13 If input B4 is used as ON OFF 04 1 the same options are valid as for P08 Select input B8 if 08 1 P14 If input B8 is used as ON OFF 08 1 the same options are valid as for P08 Select low pressure alarm P15 Used to select whether the low pressure alarm is detected when the compressor is OFF P15 1 or alternatively only when the compressor is ON P15 0 default When the compressor starts the alarm is in any case ignored for the time P03 High temperature high system start up temperature alarm delay P16 Represents the high temperature alarm threshold detected by probe B1 the differential is set at 2 C and the alarm is reset automatically the warning relay is activated signal only and the message Ht is shown When starting the system this alarm is ignored for the time P17 If the system start up protection is enabled see parameter P20 and the alarm is activated the time P17 is ignored and the alarm has no hysteresis High temperature alarm delay on power up P17 High temperature alarm delay when the control is switched on power ON from the remote ON OFF contact or from the keypad High pressure alarm from transducer set point P18 Sets the value beyond
25. R W 16 Analog A09 Auxiliary heater differential in heating mode U 03 500 C F J0 3 0 7 RW 17 Analog A10 Antifreeze automatic start up U 0 3 Flag 1 0 23 RW 1151 Integer 0 disabled function 1 Heaters and pump on at the same time on A4 A8 2 Heaters and pump on indipendently on A4 A8 3 Heaters ON on A4 A8 Table 4 b 4 3 3 Probe reading parameters B display parameter and description default min max U O M variat default visibility supervis Modbus variabile indicat level variable type b00 Config of probe to be shown on the display U 0 10 Flag 1 0 24 R W 152 integer 0 probe B1 1 probe B2 2 probe B3 3 probe B4 4 probe B5 5 probe B6 6 probe B7 7 probe B8 8 set point without compensation 9 dynamic set point with possible compensation 10 remote ON OFF digital input status bol Value read by probe B1 D CJF 70 R 70 Analog b02 Value read by probe B2 D C F 7R 7 Analog b03 Value read by probe B3 D C F 72 R 72 Analog b04 Value read by probe B4 D C F bar_ 73 R 73 Analog b05 Value read by probe B5 D C PE X 74 R 74 Analog b06 Value read by probe B6 D SCPE X 75 R 75 Analog b07 Value read by probe B7 D C F X 76 R 76 Analog bos Value read by probe B8 D C F bar_ X 77 R 77 Analog b09 Driver 1 evaporator temperature D SCPE V 78 R 78 Analog b10 Driver 1 evaporator pressure D bar V 79 R 7
26. W D AININ O compressor 4 Fig 3 d b 3 4 3 two circuits 1 condenser fan circuit Key condenser fan overload fan condenser probe 1 and 2 flow switch outlet temperature probe evaporator 1 and 2 outlet evaporator probe 1 and 2 antifreeze heater 1 and 2 olol NID OT W NO compressor 1 hih pressure 1 and 2 compressor overload 1 and 2 low pressure 1 and 2 inlet evaporator probe compressor 2 water pump reversing valve 1 and 2 compressor 3 CO W D AININ oO compressor 4 Fig 3 d c uC 030220731 rel 1 4 26 10 2009 15 Key 1 water condensing temperature probe 2__ condensator 3_ flow switch 4 outlet evaporator probe 5 _ evaporator 6 antifreeze heater 7__ inlet evaporator probe 8 compressor 1 9 __ high pressure 10 _ compressor overload 11__ low pressure 12__ water pump 13 compressor 2 Key 1 water condensing temperature probe 1 and 2 2 condensator 1 and 2 3 flow switch 4 outlet evaporator probe 5 evaporator 6 antifreeze heater 1 and 2 7 _ compressor 1 8 high pressure 1 and 2 9 compressor overload 1 and 2 10 _ low pressure 1 and 2 11 inlet evaporator probe 12 __ water pump 13__ compressor 2 14 __ compressor 3 15 compressor 4
27. documen tation supplied with the product or can be downloaded even prior to purchase from the website www carel com Each CAREL product in relation to its advanced technological level needs a phase of definition con figuration programming commissioning so that it can function at its best for the specific application The lack of such phase of study as indicated in the manual can cause the final product to malfunction of which CAREL can not be held responsible Only qualified personnel can install or carry out technical assistance interventions on the product The final client must use the product only in the manner described in the documentation related to the product itself Without excluding proper compliance with further warnings present in the manual it is stressed that in any case it is necessary for each Product of CAREL e To avoid getting the electrical circuits wet Rain humidity and all types of liquids or condensation contain corrosive mineral substances that can damage the electrical circuits In any case the product should be used and stored in environments that respect the range of temperature and humidity specified in the manual Do not install the device in a particularly hot environment Temperatures that are too high can shorten the duration of the electronic devices damaging them and distorting or melting the parts in plastic In any case the product should be used and stored in environments that respect the
28. if used A1 antifreeze alarm circuit 1 The alarm is only detected in water chillers HO1 2 3 4 5 or 6 by the evaporator water outlet probe B2 B6 The compressors in circuit 1 and the condenser fans in circuit 1 are immediately stopped the buzzer and alarm relay are activated and the display starts flashing If the uC is in Standby the alarm condition is not detected and only the heaters are managed Reset depends on parameter P5 1 in the event of automatic reset the unit restarts automatically if the temperature is above the value A01 AQ2 2 in the event of manual reset the unit can restart manually even if the alarm is active After the time A03 if the alarm persists the unit will stop again A2 antifreeze alarm circuit 2 As for Al but relating to circuit 2 Ht high temperature warning This alarm is activated when the threshold is exceeded read by B1 set for the parameter P16 It is delayed at power ON by the parameter P17 and causes the activation of the alarm relay and the buzzer without deactivating the outputs It is reset automatically when conditions that caused the alarm are no longer present Lt low temperature warning For direct expansion units HO1 0 1 the alarm is used to measure a low room temperature using probe B1 or B2 depending on par A06 The alarm may be reset manually or automatically and depends on the parameter POS If the expansion is present the corresponding relay is activated
29. impulse duration F12 This represents the duration in milliseconds for the impulse applied to the triac For induction mo tors set the parameter to 2 default On the other hand when using the CONVONOFFO CONVO0 10A0 modules or FCS controllers set the parameter to 0 Cooling compressor ON Cooling compressor ON NTC cond probe F05 F06 F05 F06 OFF Key 1 condensing temperature pressure 2 F05 F07 hysteresis 3 compressor 4 speed 5 ime Heating compressor ON NTC probe F11 0 FO8 F09 F08 F09 F08 F08 wee F04 F03 Fan management mode in defrost F13 This parameter sets the operating logic for the condensing fans during the defrost phase F13 0 default the fans are OFF F13 1 the fans are ON as in cooling mode based on the temperature or pressure F13 2 the fans are OFF until the end defrost temperature or pressure is reached above which they are started at maximum speed for the time set for parameter d16 Only at the end of this time will the cycle return to heat pump mode with the normal management of the fans Note If the unit is running the Fan Defrost function parameter d17 the fan management selected by F13 is disabled 40 uC 030220731 rel 1 4 26 10 2009 Fan on time when starting in high condensing temp F14 establishes the time the fans are operated at maximum speed if starting with a high condensing
30. measure 0 C U 0 1 Flag 1 0 5 R W 5 Digital 1 F Table 4 a 26 uC 030220731 rel 1 4 26 10 2009 4 3 2 Antifreeze auxiliary heater setting parameters A display parameter and description default min max U O M variat default visibility supervis Modbus variabile indicat level variable type A01 Antifreeze low ambient temp air air alarm set point U A07 A04 q F IO 3 0 1 RW 1 Analog A02 Differential for antifreeze low ambient temperature alarm U 03 122 0 _ C F 0 5 0 2 RW 12 Analog A03 Bypass time for antifreeze alarm low ambient temp when turning on the unit U 0 150 JS 1 0 22 R W 1150 Integer in heating mode A04 Set point for the activation of antifreeze heater auxiliary heater U A01 r16 CF O 5 0 3 RAW 13 Analog A05 Diff for antifreeze heater auxiliary heater U 03 500 Q F J0 1 0 4 R W 114 Analog A06 Auxiliary heater probe F 0 1 Flag 1 0 6 RW l6 Digital 0 Control probe see Table 5 a 1 Antifreeze probe see Table 5 a A07 Antifreeze alarm set point limit F 40 0 176 0 C F 0 40 0 5 R W 115 Analog A08 Auxiliary heater set point in heating mode U A01 r16 C F O 25 0 6
31. other hand r31 is negative the set point increases as the outside temperature decreases This maximum deviation of the set point from the set value is equal to parameter r18 See for example parameter r17 e Firmware parameters F r These parameters cannot be set display only H96 H97 software version of Driver 1 2 H98 software version of the expansion H99 software version of the uC controller uC 030220731 rel 1 4 26 10 2009 6 TABLE OF ALARMS Key to the table of alarms if the probe is set for the compensation function in the event of probe faults the unit continues to operate ON if the expansion card is not present EVD 1 EVD400 connected to uC 1st circ EVD 2 EVD400 connected to the expansion 2nd circ alarm alarm type resetting Compres pump fan heater Valve alarm warning superv superv variab variab display sor variable description type HP1 High pressure Depends on P05 OFF CI 2 ON 60 O 31 R Circuit 1 alarm Digital HP2 High pressure Depends on P05 OFF G3 4 ON 60 0 32 R Circuit 2 alarm Digital LP1 Low pressure Depends on P05 OFF CI 2 OFF 1 O 31 R Circuit 1 alarm Digital LP2 Low pre
32. pressure manual antifreeze low temperature automatic PO5 5 high and low pressure manual after the third activation in one hour antifreeze low tempera ture automatic P05 6 high and low pressure manual after the third activation in one hour antifreeze low tempera ture manual the high and low pressure alarms are managed in the same way both for the transducers and the pressure switches digital input if the unit is in standby the count 3 times in one hour is reset Cooling Heating logic PO6 If this parameter is set to 1 the operating logic of the Cooling Heating logic is reversed from the keypad the remote control and the digital input Symbol PO6 0 PO6 1 X Cooling Chiller Heating heat pump we Heating heat pump Cooling Chiller Low pressure alarm with pressure probes P07 PO7 0 this function is disabled P07 1 if in heat pump mode the evaporator external exchanger pressure is less than 1 bar and if the presence of the condenser pressure probe is enabled the low pressure alarm is activated while still considering the delay P03 Note P07 1 the LP digital inputs in heat pump are ignored uC 030220731 rel 1 4 26 10 2009 43 Select digital input ID1 PO8 0 none PO8 1 flow switch with manual reset normally closed PO8 2 flow switch with automatic reset N C Po8 3 general thermal overload with manual reset N C PO8 4 general thermal overload wi
33. the decimal even if internally the unit still operates considering the decimal part In normal operation the value displayed corresponds to the temperature read by probe B1 that is the evaporator water inlet temperature for water chillers or the ambient air temperature for direct expansion units Fig 1 a show the symbols present on the display and on the keypad and their meanings 1 2 2 Symbols on the display Display with 3 green digits plus sign and decimal point amber symbols and red alarm symbols symbol colour meaning reference refri with LED ON con LED lampeggiante gerant circuit 1 2 amber compressor 1 and or 2 ON start up request 1 13 amber compressor 3 and or 3 ON start up request 2 A amber at least one compressor ON 1 2 B amber pump air outlet fan ON start up request 1 2 amber condenser fan ON 1 2 D amber defrost active defrost request 1 2 E amber heater ON 1 2 F red alarm active 1 2 G amber heat pump mode P6 0 heat pump mode request 1 2 P6 0 H amber chiller mode P6 0 chiller mode request P6 0 1 2 Table 1 a uC 030220731 rel 1 4 26 10 2009 7 1 2 3 Funzioni associate ai tasti tasto stato della macchina modalit pressione Loading default values press at power ON Go up a sub group inside the programming area until exiting saving changes to EEPROM press once n the event of a
34. the triac Temperature pressure set point for minimum speed in cooling F05 This represents the temperature or pressure below which the fans remain ON at minimum speed In the case of ON OFF control it represents the temperature or pressure below which the fans are switched OFF Fig 5 a k Temperature pressure differential for maximum speed in cooling F06 This represents the temperature or pressure differential in reference to F05 above which the fans are started at maximum speed in the case of ON OFF control this represents the differential above which the fans are started Fig 5 a k Temperature pressure differential for fans Off in cooling F07 This represents the temperature or pressure differential in reference to F05 below which the fans are stopped The fans are started 1 C lower when using NTC temperature probes or 0 5 bars if using pressure probes Fig 5 a l If NTC temperature probes or pressure probes are used to control the condensing temperature pressure there is an activation hysteresis of 1 C or 0 5 bar respectively Temperature pressure set point for minimum speed in heating F08 This represents the temperature or pressure above which the fans are started at minimum speed Fig 5 a n For ON OFF control this represents the temperature or the pressure above which the fans are switched off Fig 5 a m Temperature pressure differential for maximum speed in heating F09 This represents the t
35. the uC system and on the communication Pressing the Prg button returns to the main screen PGO pEH v1 8 pCH Ui 2 HCH Address 2 Error ratei xx Information displayed Fig 7 q Fig 7 p d Display row Meaning 1 Terminal firmware version 2 uC firmware version 3 Supervisor address of the pC 4 Percentage error rate in the communic between the term and pC Tab 7 g If the RS485 supervisor line is connected via the MCH200TSVO adapter and the supervisor is active the iE j icon is displayed at the top right the two circles to the right of the Rx Tx fields indicate respectively the request messages sent by the supervisor to the pC with address H10 Rx and the response from the pC Tx empty circle no data sent data unchanged full circle data sent Connection to the supervisor network MCH200TSVO0 To connect the uC to the remote terminal MC2000TX00 while still maintaining the possibility to connect to the supervisor network the serial adapter optional MCH200TSVO must be used as shown in Fig 7 m Disconnect the telephone connector open the cover on the 15 way pin strip using a small pair of wire cutters and insert the adapter pin strip to 4 pin plug in the direction shown in Fig 7m pin 1 on the left from the side of the triangle Connect the RS485 network to the converter and set the parameter H10 serial address of the uC to the desired value uC 030220731 rel 1 4 26 10 2
36. two main functions upload download that can be selected through two dip switches which are placed under the battery cover They are e Loading to the key the parameters of a controller UPLOAD e Copying from the key to one or more controllers DOWNLOAD A Warning the copying of the parameters is allowed only between instruments with the same code Data loading operation to the key is always allowed To make identification of the key easier CAREL has SENS ae inserted a label on which you can describe the loaded programming or the machine to which you are Fig 7i Fig 7j referring IMPORTANT NOTE the key can be used only with controllers pC that have the same Firmware version UPLOAD copying the parameters from an instrument to the key e open the rear hatch of the key and place the two dip switches in the OFF position see Fig 7k a Close the hatch e connect the key to the connector of the instrument e press the button on the key and keep it pressed checking the LED signal sequence at first it is red after a few seconds it becomes green e ifthe sequence of signals is as indicated above the copying operation has been completed correctly green LED ON the button can be released and the key disconnected from the instrument in case of different signals if the green LED doesn t turn on or if there are some flashes there s a problem Refer to the corresponding table for the meaning of the signals DOWNLOAD c
37. which the high pressure alarm is generated Each circuit will be managed by its own transducer P18 0 the function is disabled For all other values greater than 3 0 due to the hysteresis 3 bars the alarm is managed according to the set value Low system start up temperature alarm set point P19 Represents a threshold for the low temperature measured by probe B1 alarm without hysteresis it is reset automatically the alarm relay is not activated and the display shows the message ALt System start up protection for high low temperature P20 If set to 1 this parameter enables the system protection function when starting both at power ON and when switching ON from Standby In chiller mode cooling for values of B1 greater than the set point P19 an alarm is activated and the unit is not started display AHt In heat pump mode heating for values lower than the set point P19 an alarm is activated and the unit is not started display ALt The alarm is reset automatically P20 0 the function is not enabled 44 uC 030220731 rel 1 4 26 10 2009 e Control settings parameters r Cooling set point r01 between r13 and r14 r02 cooling differential Heating set point heat pump r03 between r15 and r16 r04 heating differential Compressor rotation r05 The rotation of the compressors allows the operating hours to be balanced either statistically using FIFO logic or absolutely b
38. while the compressor is ON for the defrost cycle to be activated Key 1 end defrost T P 2 start defrostT P 3 start defrostT 4 end defrost 5 min time interval to start a def cycle d6 6 min defrost interval d5 7 timer reset uC 030220731 rel 1 4 26 10 2009 Minimum defrost duration d06 Represents the minimum duration of the defrost cycle the defrost continues even if the value read by the condenser probe exceeds the end temperature pressure If set to 0 the minimum defrost time function is disabled d06 0 control disabled Maximum defrost duration d07 If timed defrost is set d02 0 this establishes the duration of the cycle If on the other hand the defrost ends at a set temperature pressure it represents the maximum duration being in this case a safety feature an alarm is signalled dF1 or dF2 Delay between two defrost requests in the same circuit d08 Represents the minimum delay between two successive defrost cycles Defrost delay between the 2 circuits d09 Represents the minimum delay between the defrost cycles on the 2 circuits Defrost management from external contact d10 This enables or disables defrost control from an external contact This function is typically used to end the defrost based on a signal from a thermostat pressure switch connected to the corresponding digital input In this case the defrost times are ignored d10 0 function dis
39. 009 59 User interface symbol meaning refrigerant circuit ON flashing involved 1 2 Compressor 1 and or 2 ON Start request 1 3 4 Compressor 3 and or 4 ON Start request 2 At least one compressor ON 1e 02 Pump air outlet fan ON Start request le o2 L Condenser fan ON le o2 35 Defrost active Defrost request 1e 02 w Heater ON Start request 1e 02 Alarm Alarm active le o2 button Red 7 LED Oe A Alarm active EEPROM alarm 1e 02 Gr rh Warning relay activated only with expan EJ sion board Fig 7 q T Alarm relay activated Heat pump mode P6 0 Season changeover request 1e2 SE Chiller mode P6 0 Season changeover request Table7 h Functions associated with the buttons button unit status button operation C Switch off buzzer or alarm relay if alarm active Press once Manual reset of alarms that are no longer active Press for 5 s B Enter parameter programming mode after entering password Press once A Return to higher subgroup inside the programming environment until Press once exiting saving to EEPROM D Select higher item inside the programming environment Press once or hold ncrease value Switch from standby to chiller mode P6 0 and vice versa Press for 5 s E
40. 1 5 C excluding probe Pressure measurement error The error with a voltage reading with a range of input from 0 5 to 4 5 is 2 excluding probe The error in the converted value may vary according to the settings of parameters 9 10 11 12 Characteristics of the connectors Table 10 b The connectors may be purchased using CAREL code MCHCONO or from the manufacturer Molex Molex codes of the connector Number of pins 39 01 2120 12 39 01 2140 14 Table 10 c Max number of insertion removal cycles for the connectors 25 cycles Code of the contacts according to the cross section of the connection cables to the 12 and 14 pin con nectors use the special Molex tool code 69008 0724 for crimping Molex code of the contact Cross section of cables allowed 39 00 0077 AWGI6 1 308 mr 39 00 0038 AWG18 24 0 823 0 205 mm 39 00 0046 AWG22 28 0 324 0 081 mm Table 10 d In addition the pre wired kits MCHSMLC are also available uC 030220731 rel 1 4 26 10 2009 WARNINGS e If one transform is used to supply both the C2 and the accessories all the GO terminals on the va rious controllers or the various boards must be connected to the same terminal on the secondary and all the G terminals to the other terminal on the secondary so as to avoid damaging the instrument e For use in residential environments use shielded cable 2 wires shield conne
41. 1 Integer H98 Expansion software version D 0 999 flag X 2 R 130 Integer H99 Software version to be displayed after instrument D 0 999 flag 1 R 129 Integer start up Table 4 j 4 3 11 Supervisor only variables display parameter and description default min max U O M variat def visibility supervis variable Modbus variabile indicat level type Digital input 1 0 Flag 43 R 43 Digita Digital input 2 0 Flag 44 R 44 Digita Digital input 3 0 Flag 45 R 45 Digita Digital input 4 0 Flag 46 R 46 Digita Digital input 5 0 Flag 47 R 47 Digita probe B4 digital input 0 Flag 48 R 48 Digita Digital output 1 0 Flag 49 R W 49 Digita Digital output 2 0 Flag 50 R W 50 Digita Digital output 3 0 Flag 51 R W 51 Digita Digital output 4 0 Flag 52 R W 52 Digita Digital output 5 0 Flag 53 R W 53 Digita Unit status I ON or 0 standby 0 Flag 0 54 R W 54 Digita 1 Cooling or 0 Heating 0 Flag 1 55 R W 55 Digita Digital input 6 2nd circuit 0 Flag 56 R 56 Digita Digital input 7 2nd circuit 0 Flag 57 R 57 Digita Digital input 8 2nd circuit 0 Flag 58 R 58 Digita Digital input 9 2nd circuit 0 Flag 59 R 59 Digita Digital input 10 2nd circuit 0 Flag 60 R 60 Digita Probe B8 digital inputs 2nd circuit 0 Flag 61 R 6l Digita Digital output 6 0 Flag 62 R W 62 Digita Digita
42. 1 condenser fan overload 2 ifan 3 _ condenser probe 1 and 2 4 _ flow switch 5 outlet temperature probe 6 evaporator 1 and 2 7 ___ outlet evaporator probe 1 and 2 8 antifreeze heater 1 and 2 9 compressor 1 10 _ high pressure 1 and 2 11__ compressor overload 1 and 2 12__ low pressure land 2 13 _ inlet evaporator probe ompressor 2 15 water pump 16 _ compressor 3 ompressor 4 E A 3 3 4 AIR WATER heat pump 3 4 1 Single circuit Key condenser fan overload gt antifreeze heater inlet evaporator probe 9 compressor 1 10 __ high pressure 11 compressor overload 12 __ low pressure 13 _ water pump 14 compressor 2 2 fan 3__ sonda condensatore 4 _ flow switch 5 outlet evaporator probe 6 _ evaporator 7 8 Fig 3 d a 14 uC 030220731 rel 1 4 26 10 2009 3 4 2 2 condenser fan circuits Key condenser fan overload 1 and 2 fan 1 and 2 condenseer probe 1 and 2 flow switch outlet temperature probe evaporator 1 and 2 outlet evaporator probe 1 and 2 antifreeze heater 1 and 2 olo IN oD MAn AINN compressor 1 high pressure 1 and 2 compressor overload 1 and 2 low pressure 1 and 2 inlet evaporator probe compressor 2 water pump reversing valve 1 and 2 compressor 3 CO
43. 2 Power supply and the terminal using the telephone cable code S9IOCONNO02 80 cm supplied If the cable is not long enough use a pin to pin telephone cable with a maximum length of 40 m A Warnings e only use safety transformers e for safety reasons a 250 mA slow blow fuse must be fitted in series with terminal G e if using the same transformer for the uC and the terminal respect the polarity G GO as per the wiring diagram Reversing the polarity is the same as short circuiting the secondary of the transformer e do not earth the secondary of the transformer 24 Vac power supply line G G0 Typical length Minimum cross section 250m 1 5 mm AWG16 100 m 0 5 mm AWG20 50m 0 35 mm AWG22 Table7 e RS485 serial line to pC Speed 19200 baud Maximum RS485 distance 1 Km with 120 ohm terminals Cable characteristics twisted pair shield Cross section AWG22 Capacitance per metre lt 90 pF m for example BELDEN 8761 8762 cables Table7 f Connection diagram local power supply k ba Key MCH200TW MCH200000 1 alternative MCH200001 FCSERO000 see Fig 7 0 b pone lai nsert 120 ohm terminal resistor between Tx Rx and Tx Rx or lines longer than 20 m ength max 1000 m RS485 twisted pair shield Rx Tx Rx Tx GND use 250 mA 24 Vac 3 VA elephone cable length max 40 m RJ12 power supply N gt O OOND
44. 4 OFF ON 34 R EVD 2 warning Digital n01 MOP 1 warning Automatic ON 38 R EVD 1 advice Digital n02 MOP 2 warning Automatic ON 39 R EVD 2 advice Digital LOI LOP 1 warning Automatic ON 38 R EVD 1 advice Digital L02 LOP 1 warning Automatic ON 39 R EVD 2 advice Digital HAI High inlet temperature Automatic gt a ON 38 R EVD 1 advice Digital warning circ 1 HA2 High inlet temperature Automatic z gt ON 39 R EVD 2 advice Digital warning circ 2 EP1 EVD 1 Eeprom error Automatic OFF CI 2 OFF 8 33 R EVD 1 warning Digital EP2 EVD 2 Eeprom error Automatic OFF G3 4 OFF 0 34 R EVD 2 warning Digital ESI EVD 1 probe error Automatic OFFCI 2 OFF O 33 R EVD 1 warning Digital ES2 EVD 2 probe error Automatic OFF G3 4 OFF 0 34 R EVD 2 warning Digital EUI Open valve EVD 1 error at Automatic OFF CI 2 OFF gt 0 33 R EVD 1 warning Digital he start up EU2 Open valve EVD 2 error at Automatic OFF G3 4 OFF O 34 R EVD 2 warning Digital he start up Eb1 EVD 1 battery alarm Automatic OFFCI 2 OFF O 33 R EVD 1 warning Digital Eb2 EVD 2 battery alarm Automatic OFF 3 4 OFF O 34 R EVD 2 warning Digital L Low load warning Automatic Signal on display Ed1 Lan EVD 1 communication Automatic OFF CI 2 OFF O 33 R EVD 1 warning Digital error Ed2 Lan EVD 2 communication Automatic OFF
45. 5x18 mm including prod and connector Figs 1 and 2 Table 7 d Here we have dealt only with the base functions of the instrument For the remaining specific functions see the manual of the instrument that is being used 56 uC 030220731 rel 1 4 26 10 2009 7 9 RS485 serial options RS485 serial option for uC panel version code MCH2004850 The MCH2004850 serial option is used to connect the uC controller to a supervisor network via a standard RS485 serial line This option uses the input normally associated with the programming key which has the dual function of key connector serial communication port Fig 7 l a RS485 serial option for uC DIN rail version code FCSERO0000 The FCSER00000 serial option is used to connect the uC controller to a supervisor network via a standard RS485 serial line To access the connector and insert the serial board open the cover as shown in Fig Zn m A a FCSER EE RS485 serial card EZ Fig 7 b 7 10 Remote terminal for pC The remote terminal for uC MCH200TP panel version and MCH200TW wall mounting version is an electronic device that allows the remote control of an air conditioning unit managed by the pC The functions allowed are the same as those available on the display and the local keypad of the pC MCH200T 00 MCH200TSVO Fig 7m K
46. 8 uC 030220731 rel 1 4 26 10 2009 F02 3 ON when the corresponding compressor is ON with speed control When the compressors are stopped the corresponding fans are also stopped irrespective of the condensing temperature pressure With F02 3 and an NTC condenser probe when the compressor starts the fans are started at maximum speed for the time F11 irrespective of the temperature measured In the event of a condenser probe fault the fans will be switched OFF Minimum voltage threshold for Triac F03 In the event of fan speed control the optional phase cutting cards MCHRTF are required fitted with a triac The voltage delivered by the triac to the electric fan motor corresponding to the minimum speed must be set The set value does not correspond to the actual voltage in Volts applied but rather to an internal unit of calculation in the uC If using FCS controllers set this parameter to 0 F03 Represents the minimum threshold for the triac Maximum voltage threshold for Triac F04 In the event of fan speed control the optional phase cutting cards MCHRTF are required fitted with a triac The voltage delivered by the triac to the electric fan motor corresponding to the maximum speed must be set The set value does not correspond to the actual voltage in Volts applied but rather to an internal unit of calculation in the pC If using FCS controllers set this parameter to 100 F04 Represents the maximum threshold for
47. 9 Analog bil Driver 1 superheating D C F V 80 R 80 Analog b12 Driver 1 saturation temperature D C F V 81 R 81 Analog b13 Driver 1 valve position D 0 100 0 V 82 R 82 Analog b14 Driver 2 evaporator temperature D ChE XV 83 R 83 Analog b15 Driver 2 evaporator pressure D bar XV 84 R 84 Analog b16 Driver 2 superheating D C F XV 85 R 85 Analog b17 Driver 2 saturation temperature D C F XV 86 R 86 Analog b18 Driver 2 valve position D 0 100 0 XV 87 R 87 Analog b19 Temp probe at the outlet of the external coil c1 D C F V 88 R 88 Analog b20 Temp probe at the outlet of the external coil c12 D C F XV 89 R 89 Analog Table 4 c 4 3 4 Compressor setting parameters c display parameter and description default min max U 0 M variat def visibi supervis Modbus variabile indicat level lity variable type c01 Min compressor ON time U 0 999 js 1 60 l 25 R W 53 Integer c02 Min OFF time compressor U 0 999 js 1 60 l 26 R W 54 Integer c03 Delay between 2 starts of the same compressor U 0 999 js 1 360 l 27 R W 55 Integer c04 Delay between starts of the 2 compressors U 0 999 js 1 10 28 R W 56 Integer c05 Delay between 2 shut downs of the 2 compressors U 0 999 js 1 0 29 R W 57 Integer c06 Delay at start up U 0 999 s 1 0 30 R W 58 Integer c07 Delay in switching on the compressor after switching on the pump inlet U
48. AW Fig 7 0 a 58 uC 030220731 rel 1 4 26 10 2009 Connection diagram remote power supply Key MCH200001 1 alternative MCH200000 MCH2004850 see Fig 7 0 a FCSER00000 2 Insert 120 ohm terminal resistor between Tx Rx and Tx Rx or lines longer than 20 m 3 length max 250 m min cross sect 1 5 mm AWG16 1 4 RS485 twisted pair shield Rx Tx Rx Tx GND H 0 5 fuse 250 mA i 6 24 Vac 3 VA 7 telephone cable 8 length max 40 m 9 RJ12 power supply Fig 7 0 b Installation To install the remote terminal no configuration is required on the pC as the terminal works with any serial address set for parameter H10 Check however that the uC is fitted with the serial interface FCSER00000 DIN rail version or MCH2004850 panel version When first switched on the display will FEE SACI show the firmware version of the pC Fig Zp a ERE res Fig 7 p a After around 4 s the main screen will be displayed with the symbols that represent the status of the uC Fig Zp b z par Fy aTe vie In the event where the RS485 connection is not performed correctly or the controller is off the terminal will clear the display and show the message OFFLINE Fig 7 p c Info mode Fig 7 p c Pressing the Up Down Sel buttons together for more than 6 seconds displays the INFO screen Fig 7 p d containing information on
49. C PSOPZKEY00 ON OFF fan card only screw terminals CONVONOFFO PWM 0 to 10 V fan card only screw terminals CONVO 10A0 Fan card faston terminals MCHRTF 0A0 Fan card screw terminals MCHRTF 0B0 depending on amperage 2 2A 4 4A 6 6A 8 8A Temperature probes for regulation or condensation control NTC WPOO depending on the length 015 1 5 m 030 3 m 060 6 m Pressure probes for condensing pressure control SPK R depending on the pressure 13 150 PSI 23 75 PSI 33 500 PSI Connectors kit for code MCH2000001 multiple package 20 pcs MCH2CONO01 Connectors kit for code MCH2000001 multiple package 10 pcs MCH2CONO11 Connectors kit for code MCH2000001 multiple package 10 pcs MCH2CON021 Minifit connectors kit 1 meter length for code MCH20000 MCHSMLCABO Minifit connectors kit 2 meter length for code MCH20000 MCHSMLCAB2 Minifit connectors kit 3 meter length for code MCH20000 MCHSMLCAB3 Remote terminal for MCH20000 for panel installation MCH200TPO MCH200TPo Remote terminal for MCH20000 for wall mounting MCH200TWo MCH200TWo Supervisor serial connection kit for remote terminal MCH200TSVO Table 9 a uC 030220731 rel 1 4 26 10 2009 63 10 TECHNICAL SPECIFICATIONS AND SOFTWARE UPDATES 10 1 Technical specifications Electrical specifications In the following specifications Group A defines the grouping of the following outputs valve pump compressor heater Power supply 24 Vac range 10
50. Digital input 10 selection F 0 22 Flag 1 0 X 73 R W 201 Integer P13 Configuration of B4 as P8 if 4 1 digital input F 0 22 Flag 1 0 74 R W 202 Integer P14 Configuration of B8 as 8 1 digital input F 0 22 Flag 1 0 X 75 R W 203 Integer P15 low pressure alarm configuration L F 0 1 Flag 1 0 76 R W 204 Integer 0 not active with compressor OFF 1 active with compressor OFF P16 High temperature alarm set U 40 0 C 01 80 0 38 R W 38 Analog P17 High temperature alarm delay at start up U 0 250 min 1 30 77 R W 205 Integer P18 High pressure alarm set from transducer F 0 99 9 bar 0 1 20 0 P 39 RW 39 Analog P19 System low temperature alarm set point U 40 0 C 0 1 10 0 40 R W 40 Analog P20 Enable system start up protection U 0 1 Flag 1 0 20 R W 20 Digital 0 Disabled 1 Enabled P21 Alarm relay management F 0 1 Flag 0 8 RW 8 Digital 0 normally de activated 1 normally activated Table 4 h 4 3 9 Control setting parameters r display parameter and description default min max U O M variat def visibility supervis Modbus variabile indicat level variable type rol Cooling set point D a3 4 C F 0 1 12 0 41 RW 41 Analog r02 Cooling differential D 0 3 50 0 Q F 0 1 3 0 42 R W 42 Analog r03 Heating set point D r5 r6 C F 0 1 40 0 43 R W 43 Analog r04 Heating differential D 0 3 50 0 Q F 01 3 0 44 R W 44 Analog r05 Compressor rotation F 0 3 flag 1 0 78 R
51. W 1206 Integer 0 disabled 1 FIFO type 2 con controllo ore hour control 3 direct relation between D I and compressors D O r06 Type of compressor control F 0 4 flag 1 0 79 R W 207 Integer 0 proportional on inlet 1 proportional on inlet dead zone 2 proportional on outlet 3 proportional on outlet dead zone 4 time on outlet with dead zone r07 Dead zone differential F 0 1 50 0 C F 0 1 2 0 45 R W 45 Analog r08 Activation delay at lower limit of r07 F 0 999 s 1 120 80 R W 208 Integer r09 Activation delay at upper limit of r07 F 0 999 js 1 100 81 R W 209 Integer r10 Deactivation delay at lower limit of r12 F 0 999 js 1 120 82 R W 210 Integer rll Deactivation delay at upper limit of r12 F 0 999 js 1 100 83 R W 211 Integer r12 Compressor deactivation differential F 0 50 0 C F 01 2 0 46 R W 46 Analog r13 Min Cooling set point U 40 0 _ r14 C F 0 1 40 0 47 R W 47 Analog r14 Max Cooling set point U 13 C 0 1 80 0 48 R W _148 Analog r15 Min Heating set point U 40 0_ r16 C F 0 1 40 0 49 R W 49 Analog r16 Max Heating set point U r15 176 0 C 0 1 80 0 50 R W 50 Analog 30 uC 030220731 rel 1 4 26 10 2009
52. abled Note for the other settings the start and end defrost are enabled for temperature and pressure values between the Defrost start and end set points 10 1 start defrost from external contact enabled therefore the contact of the input is open the start of the defrost is enabled the contact of the input closed the defrost follows the normal procedure d10 2 end defrost from external contact enabled therefore e if the contact of the input is open the end of the defrost is enabled e if the contact of the input is closed the defrost follows the normal procedure d10 3 start and end defrost from external contact enabled therefore the contact of the input is open the end start of the defrost is enabled the contact of the input is closed the defrost follows the normal procedure i i 0 i i 0 i i Antifreeze auxiliary heaters in defrost d11 This parameter determines whether during the defrost cycle the antifreeze auxiliary heaters should be activated to limit the flow of cold water air into the room d11 0 antifreeze auxiliary heater not activated in defrost d11 1 antifreeze auxiliary heater activated in defrost Waiting time before defrost delay in switching from heating to cooling d12 As soon as the defrost condition arises but before the actual cycle starts the unit stops the compres sor for the time d12 selectable from 0 to 3 minutes When the compressor stops t
53. ables from the cables carrying inductive loads and power cables to avoid avi Beare possible electromagnetic disturbance Never run power cables including READ CAREFULLY INTHE TEXT _ the electrical panel wiring and signal cables in the same conduits uC 030220731 rel 1 4 26 10 2009 5 4 uC 030220731 rel 1 4 26 10 2009 Content 1 INTRODUCTION 7 1 1 General CeSCription cssssssssssssssssesssnssssssssessssssesssnsssssnsessssnssssusnssssanssseussssseanessessnesencsnssesnsesee 7 12 JWSEr INteHaCe ansen aa 7 2 CONNECTIONS 9 2 1 General diagram csscsssssssssssesssesssssssesssssesssnsesssnsessssssssesssssusnssssasssssussesseusessesssesesssnssesnensee 9 Did NOtWOTK layo Ut zsscacsscssntscstincicctssctuscinncuscinesssscastinicecinssanisistoutsistassividbcecisteoksstiesinshecissasetS0 9 3 APPLICATIONS 10 Be AME LAMINAE cee ccse tresses cabs sec ettticntscnlacesctiiaectnecteli eh Ateaeecetias al cat eas ace creat cea 0 32 AIR AIR Peat UMD anaana gnar ali 1 BS CAI WAVER CONG sanoan aena OR 3 BA AIR WATER h at PUMP cacsacinscsscisscssessetssessssscdssssnndccssistsissteiClstns sista sciostescinsSacissistsstincb 4 3 5 WATER WATER chiller 16 3 6 WATER WATER heat pump with reversal OM 9a5 ssssssssssssssssessssessssssssusssssusnssessnssesssasee Tell el NAE E EE eet E ER nn err eer Teer eee 7 3 7 WATER WATER heat pump with reversal on water circuit 19 3 8 Air cooled condensing unit without reverse cycle
54. and 2 6 _ evaporator 1 and 2 7 __ antifreeze heater 1 and 2 8 water pump 9 compressor 1 10 _ high pressure 1 and 2 11__ compressor overload 1 and 2 12__ low pressure 1 and 2 13 inlet evaporator probe 14 __ compressor 2 15 compressor 3 16 __ revesing valve 1 and 2 17 compressor 4 Key 1 condenser probe 1 and 2 2 condenser 1 and 2 3 flow switch 4 _ outlet evaporator probe 5 _ evaporator 6 _ antifreeze heater 1 and 2 7 compressor 1 8 __ high pressure 1 and 2 9 compressor overload 1 and 2 10 _ low pressure 1 and 2 11__ inlet evaporator probe 12 water pump 13 compressor 2 14 ___ reversing valve 1 and 2 15 compressor 3 16 compressor 4 3 6 2 Two circuits Fig 3 f b 3 6 3 Two circuits 1 evaporator Fig 3 f c 18 uC 030220731 rel 1 4 26 10 2009 3 7 WATE ATER heat pump with reversal on water circuit 3 7 1 Single circuit Key external internal reversing valve flow switch outlet evaporator probe antifreeze heater evaporator 00 W OT B N NO condenser condenser probe compressor 1 high pressure compressor overload low pressure water pump compressor 2 3 7 2 Two circuits HO2 1 and H21 4 Key external internal reversing valve 1 and 2 condenser probe flow switch outlet evaporator probe condenser probe 1 and 2
55. b d r06 enable the dead zone enabled if r06 1 or 3 r07 dead zone j r03 heating set point ON r04 heating differential In heat pump heating mode the dead zone moves the heating proportional band below the set point by the value r07 Outlet temperature control by time r06 4 only chiller This type of control is based on the need to maintain the outlet temperature as constant as possible despite the load being variable or the reduced inertia of the system The logic has the aim of keeping the temperature inside the dead zone If outside the zone the compressors will be activated with the logic described below so as to return rO3 rO7 r04 rO1 rO7 r02 4 r03 r07 r03 inside the dead zone neither too quickly using an integral or derivative nor too slowly with fixed time 103 r07 104 3 4 r03 r07 r04 4 logic There are two logical times involved the activation time and deactivation time ene ig 5 b uC 030220731 rel 1 4 26 10 2009 45 Dead zone differential r07 see dead zone Activation delay at lower limit of r07 if r06 4 r08 The value set is used in the control algorithm see timed outlet temperature control as the maxi mum time at the start of the differential for the activation of the compressors Activation delay at upper limit of r07 if r06 4 A Pi i i r09 The value set is used in the control algorithm see timed outlet temperatur
56. bes terminal FOL SPKT trasduttori MCH2 TSV PW CAREL di pressione 0 5 V Supervisory adapter Fig 2 a uC 030220731 rel 1 4 26 10 2009 EV driver RS485 Fig 2 b RS485 PWM o r pier 2 eae o tLAN HC EV driver Fig 2 c 3 APPLICATIONS 3 1 Air air unit 3 1 1 Single circuit Key 1 condernser fan overload 2 fan 3 condenser probe 4 _ supply probe 5 electrical heater 6 evaporator 7 supply fan overload 8 supply fan 9 compressor 1 10 _ high pressure 11 _ compressor overload 12__ low pressure 13__ ambient probe 14 compressor 2 Fig 3 a a 3 1 2 Two circuits Key condernser fan overload 1 and 2 O fan condenser probe supply probe electrical heater 1 and 2 evaporator 1 e2 upply fan overload supply fan 9 compressor 1 10 _ high pressure 1 and 2 11__ compressor overload 1 and 2 12 __ low pressure land 2 13__ ambient probe 14 __ compressor 2 15 __ compressor 3 16 compressor 4 wn INID B NO 10 uC 030220731 rel 1 4 26 10 2009 3 1 2 Two circuits 1 condenser fan circuit Key condernser fan overload fan c
57. condenser 1 and 2 W OO W M AININ outlet evaporator probe 1 and 2 antifreeze heater 1 and 2 evaporator 1 and 2 compressor 1 high pressure 1 and 2 compressor overload 1 and 2 low pressure 1 and 2 compressor 3 inlet evaporator probe water pump W OO W D W NR O compressor 2 N compressor 4 uC 030220731 rel 1 4 26 10 2009 19 Key external internal reversing valve 1 and 2 condenser probe flow switch outlet evaporator probe condenser probe 1 and 2 W OO W O1 BIW condenser 1 and 2 outlet evaporator probe 1 and 2 antifreeze heater 1 and 2 evaporator 1 and 2 compressor 1 high pressure 1 and 2 compressor overload 1 and 2 low pressure 1 and 2 compressor 3 inlet evaporator probe water pump W CO W D AINN O compressor 2 N compressor 4 Key condenser fan overload fan condenser probe compressor 1 high pressure compressor overload low pressure 00 W AININ compressor 2 3 73 Two circuits 1 evaporator H02 1 e H21 4 3 8 Air cooled condensing unit without reverse cycle 3 8 1 Single circuit oe e B3 4 20 uC 030220731 rel 1 4 26 10 2009 3 8 2 Two circuits O Key condenser fan o
58. cted to heart both sides type AWG 20 22 for the tLAN connections EN 55014 1 e Avoid short circuits between V and GND so as to not damage the instrument e Perform all the maintenance and installation operations when the unit is connected to the power supply e Separate the power cables relay outputs from the cables corresponding to the probes digital inputs and serial line e Use a transformer dedicated exclusively to the electronic controllers for the power supply Protection against electric shock and warnings for maintenance The system made up of a control board MCH200000 and the other optional cards MCH200002 MCH200485 MCHRTF CONVONOFF CONVO0 10A EVD000040 represents a control device to be integrated in class or class Il equipment The class of protection against electric shock depends on the method with which the control device is integrated into the unit made by the manufacturer Disconnect the power supply before working on the board for assembly maintenance and replacement The protection against short circuits due to defective wiring must be guaranteed by the manufacturer of the equipment that the control device is integrated into Maximum cable lengths of the connection cables NTC ratiometric probe connection cable 10m digital input connection cable 10m power output connection cable 5m fan control output connection cable 5m _ power cable 3m Tab 10 e 11 1 Software updates
59. e electrical heater 1 e 2 evaporator 1 e 2 supply fan overload supply fan 9 compressor 1 10 _ high pressure 1 and 2 11__ compressor overload 1 and 2 12__ low pressure 1 and 2 13 ambient probe 14 __ compressor 2 15 __ reversing valve land 2 16 _ compressor 3 17__ compressor 4 00 W D 1 W NO Fig 3 b c 12 uC 030220731 rel 1 4 26 10 2009 3 3_AIR WATER chiller 3 3 1 Single circuit Key condernser fan overload fan condenser probe flow switch outlet evaporator probe fan antifreeze heater inlet evaporator probe 9 _ compressor 1 10 _ high pressure 11__ compressor overload 12 __ low pressure 13 water pump 14 __ compressor 2 INIAN AININ Key 1 condenser fan overload 1 and 2 2 fanland2 3 condenser probe 1 and 2 4 _ flow switch 5 _ outlet temperature probe 6 _ evaporator 1 and 2 7 outlet evaporator probe 1 and 2 8 _ antefreeze heater 1 and 2 9 compressor 1 10 _ high pressure 1 and 2 11__ compressor overload 1 and 2 12 __ low pressure land 2 13 inlet evaporator probe 14 compressor 2 15 water pump 16 compressor 3 17___ compressor 4 uC 030220731 rel 1 4 26 10 2009 13 3 3 2 two circuits 1 condenser fan circuit Key
60. e control as the mini ce aac N activation time a ae mum time at the end of the differential for the activation of the compressors 1 1 1 1 2 Activation time cooling The activation time is not a set parameter but rather the combination of two set parameters that is r08 i i and r09 When the temperature leaves the dead zone the activation time is equal to r08 while at the end mihe Jospin of the differential r02 the activation time is equal to r09 Inside the differential r02 the activation time varies linearly between r08 and r09 temperature i This means that as the temperature moves away from the set point the times are reduced and the espon r03 rOs 12 se of the process becomes more dynamic dead zone comp act differential Fig 5 b e Deactivation delay at upper limit of r12 if r06 4 r10 The value set is used in the control algorithm see timed outlet temperature control as the maxi mum time at the set point for the deactivation of the compressors Deactivation delay at lower limit of r12 if r06 4 r11 The value set for this parameter is used in the control algorithm see timed outlet temperature control as the minimum time at the end of the deactivation differential for the deactivation of the compressors Compressor deactivation differential if r06 4 a i r12 This represents the temperature differential for the deactivation of the compressors according to the I j l procedure described in Deac
61. el index of protection IP65 with panel mounting MC200TP00 UL Type 1 IP40 with wall mounting MC200TW00 UL Type 1 Operating conditions 20T60 C 90 r H non condensing Storage conditions 20T70 C 90 r H non condensing Self extinguishing VO on transparent front panel and rear of case according HB on silicon keypad and remaining parts PTI of insulating material 250V Software class and structure A Environmental pollution norma Period of electrical stress long Classification according to protection against electric to be integrated into class or II devices shock Category of immunity against voltage surges category II Table7 l 60 uC 030220731 rel 1 4 26 10 2009 8 DIMENSIONS The following are the mechanical dimensions of each component in the uC controller all the values are expressed in millimetres Note the dimensions include the free connectors inserted MCH200000 uC panel mounting version MCH200001 pC din rail mounting version 110 drilling template 71x29 mm panel Bi 7 AA overall dimensions 91 5x36x5 mm Fig 8 a Expansion board for pC CONVONOFFO and CONV0 10 A modules OOOO 88 156
62. emperature or pressure above which the fans are started at minimum speed Fig 5 a l In the case of ON OFF control it represents the temperature or pressure above which the fans are switched OFF Fig 5 a k Temperature pressure differential for fans Off in heating F10 If fan speed control is used this represents the temperature or pressure differential in reference to F08 above which the fans are stopped The fans are started 1 C lower if using NTC temperature probes or 0 5 bars lower if using pressure probes When using NTC temperature or pressure probes for condenser control the fans are started with an hysteresis of 1 C or 0 5 bar Fan start time F11 This establishes the operating time at maximum speed when the fans are started so as to overcome the mechanical inertia of the motor The same times are observed in reference to the start of the compressor irrespective of the condensing temperature pressure if NTC temperature probes are used on the condenser and speed control is enabled F02 3 this is done to bring forward the sudden increase in pressure which does not necessa rily correspond to a likewise rapid increase in temperature in the area where the probe is located and consequently to improve control F11 0 the function is disabled that is the fans are activated at the minimum speed and then controlled based on the condensing temperature pressure uC 030220731 rel 1 4 26 10 2009 39 Triac
63. end defrost condition uC 030220731 rel 1 4 26 10 2009 37 Start defrost with 2 circuits d15 This parameter is used to select whether to defrost the two circuits together or separately d15 0 default the two circuits start defrosting independently each according to their own temperatu re or pressure probe reading only if H2 1 d15 1 the two circuits start defrosting when both have reached the start defrost conditions d15 2 the two circuits start defrosting when at least one of the two has reached the defrost conditions d14 0 di4 1 di4 2 d15 0 OK OK OK d15 1 OK OK OK d15 2 Not possible OK Not possible Tab 5 b Forced ventilation time at end defrost d16 If the parameter F13 2 as soon as the end defrost temperature or pressure is reached the fans are activated at maximum speed for the set time before the change in operating mode Only at the end of this time will the cycle switch back to heat pump mode with the normal management of the fans Defrost with compressors OFF Fan Defrost d17 This function allows the outside temperature to be exploited when sufficient to defrost the conden ser outdoor evaporator In these conditions the unit rather than reverse the cycle simply turns OFF the compressors and activa tes the fans at maximum speed The start and end defrost conditions remain unchanged as does the use of any auxiliary heaters The parameter has the follow
64. ey rear view 15 way pin strip adapter for pin strip optional RS485 serial line from the supervisor to the MCH2 through RJ12 power supply eo a uC 030220731 rel 1 4 26 10 2009 57 Panel installation code MCH200TP00 This version has been designed for panel installation with the drilling template measuring 127 x 69 mm with 2 circular holes diameter 4 mm as shown in Fig 7 m For installation proceed as follows Fig 7 n a connect the telephone cable e insert the terminal without the front frame in the opening and use the countersunk screws to fasten the device to the panel e finally apply the click on frame Wall mounting code MCH200TW00 The version of the terminal for wall mounting requires the rear of the case A to be fastened Fig 7 n b using a standard 3 module switch box e fasten the rear of the case to the box using the round head screws connect the telephone cable e rest the front panel on the rear of the case and fasten the assembly using the countersunk screws as shown in Fig 7 n b e finally apply the click on frame Electrical connections Fig 7 0 a 7 0 b Connect the RS485 serial line leaving the power supply RJ12 Power supply to the supervisor input on the uC using a twisted pair cable with shield Power terminals G GO from a transformer with a 250 mAT fuse as shown in the diagram in Fig 7 0 a 7 0 b Make the connection between the power supply RJ1
65. he 2 circuits to optimise the starts or the operating hours of the 2 compressors 1 per circuit 42 Function of the second pump H21 This parameter defines how the output dedicated to the second pump must be managed H21 0 the second pump Is disabled H21 1 the second pump is used only as a backup If the flow switch and corresponding alarm are activated the pumps are switched over e ifthe alarm passes a warning is shown on the display and the warning relay is activated while the unit continues to operate with the Backup pump When the next alarm is activated the pumps will be switched over eif the alarm remains active even with the second pump on for longer than the time set for P1 the generic alarm is generated and the unit is switched OFF H21 2 the second pump represents a backup pump The two pumps are never used at the same time but each 24 hours are switched over In the event of flow alarms the logic is the same as for setting 1 After being switched over due to the flow alarm the 24 hour timer is set to zero H21 3 the second pump is used as an ON OFF device in the same way as the condenser fan which in this case is not present in ON OFF mode with the same settings in fact in this case the pump replaces the fan including the symbol H21 4 the second pump is used for the condenser but is always ON In this case the pump symbol is uC 030220731 rel 1 4 26 10 2009 not managed
66. he four way valve is switched reversing of the cycle after a time equal to d12 2 this waiting time allows the pressure to balance before starting the defrost cycle In this procedure the compressor protection times are ignored and consequently the compressor is stopped and subsequently restarted immediately If d12 0 the compressor is not stopped and the reversing valve is switched immediately Waiting time after defrost delay in switching from cooling to heating d13 At the end of the defrost cycle the unit stops the compressor for a time d13 selectable from 0 to 3 minutes When the compressor stops the four way valves is switched reversing of the cycle after a time equal to d13 2 this waiting time allows the pressure to balance and the outdoor coil to drip In this procedure the compressor protection times are ignored and consequently the compressor is stopped and subsequently restarted immediately If d13 0 the compressor is not stopped and the reversing valve is switched immediately End defrost with two gas circuits 1 fan circuit d14 This parameter is used to select in units with two refrigerant circuits and one fan circuit the end defrost mode d14 0 default the two circuits end the defrost independently each according to their own temperatu re or pressure probe reading only if H2 1 d14 1 when both the circuits have reached the defrost condition d14 2 when one of the two circuits has reached the
67. he time that the compressor must remain OFF for when stopped even if the start gt OFF signal is sent The compressor LED flashes in this phase ON Key 1 signal OFF ON OFF ON 2 compressor 3 min OFF time interval Delay between 2 starts of the compressor c03 This sets the minimum time that must elapse between two successive starts of the same compressor deter mines the maximum number of starts per hour for the compressor The compressor LED flashes in this phase If by mistake the user enters a value lower than the sum of C01 C02 this parameter will be ignored and only the times C01 and C02 will be considered Key 1 signal 2 compressor 3 min time interval between two ON routins Start delay between compressors c04 This sets the delay between the starts of the two compressors so as to reduce the peak power input and make the compressors start more smoothly The compressor LED flashes in this phase e Inthe event of capacity control the delay c04 between compressor and valve becomes 04 2 e Inthe event of defrost operation the delay between compressor and compressor is 3 seconds and OFF ON between compressor and valve is 2 seconds OFF Key ON Teal 1 1 signal OFF 2 2 signal OFF ON OFF 34 3 1 compressore 4 2 2 compressor 5 time delay between two compressors ON routines time delay of the capacity controlled routine 3 2
68. hen H05 3 see parameter H05 The dashed areas on the compressor line indicate the pump compressor and compressor pump delay times Burst mode is disabled in standby and during an alarm when the pump is OFF At power ON the delay c17 must elapse before burst can start Minimum pump ON time c18 This represents the minimum time that the pump remains ON for see Fig 5 1 active with HO5 3 see parameter H05 e Defrost settings parameters d The defrost has priority over the compressor times For the defrost function the compressors times are ignored with the exception of C04 see C04 descrip tion for the exceptions Key 1 compressor 2 pump 3 burst Enable condenser defrost antifreeze d01 For heat pumps with air cooled condensers HO1 1 3 8 this establishes whether defrost control must be performed on the outdoor exchanger evaporator in heating mode On the other hand for water water heat pumps with reversal on the gas circuit HO1 5 10 it enables antifreeze control on the cooling water for the outdoor exchanger which becomes the evaporator in heating mode see d03 If the fan is not present the function is not enabled for air water units d01 0 condenser defrost antifreeze disabled d01 1 condenser defrost antifreeze enabled If defrosting is enabled the LED corresponding to the condensate symbol on the display will come O Type of defrost d02 establishes the type of defrost d02 0 the defr
69. ible with the 11 Super User password allow the configuration of the Super User User and Direct parameters e User parameters Accessible with password 22 allow the configuration of the parameters that typically can be set by the user User parameters and the Direct parameters consequently relating to the options e Direct parameters Accessible without password this are used to read the probe measurements and any data by any user without compromising the operation of the unit N B The modifications to the parameters regarding the configuration of the unit type number of compressors must be performed with the controller in Standby level level name password d direct no password U user 22 S super user 11 4 2 Menu structure F factory 66 main men E For 5 med Save in the EEPROM muse m And Fors setting password Bit Je parameter values 4 ee a et P NU parameters pM al i parameters F r parameter level parameters A software antifreeze ok parameters r m q Parameters b l D regulation BBC probes be parameters c parameters P f K P dml k compressor parameters H H unit setting m RAO parameters D parameters F defrost eps
70. ich the auxiliary heater is activated In the air air heat pumps HO1 1 the auxiliary heaters are not used in cooling mode Antifreeze heater auxiliary heater differential A05 Differential for the activation and deactivation of the antifreeze heaters auxiliary heaters in air air CAREL NTC probes mode H1 2 3 4 5 e 6 units a Operating diagram of the antifreeze alarm and the antifreeze heaters for air water and water water chillers and heat pumps Key antifreeze alarm differen A2 antifreeze heater differen A5 Aa heaters antifreeze alarm antifreeze heater set point A4 Al Fig 5 a a t antifreeze alarm set point A1 OO ANS Auxiliary heater probe in heating A06 This determines which probe is used for control the auxiliary heater The meaning of the parameter is the following A06 0 gt Control probe see Table 5 a a A06 1 gt Antifreeze probe see Table 5 a a If H1 1 the heaters are disabled in cooling mode See Functions of the probes Antifreeze alarm set point limit A07 Establishes the minimum limit for setting the antifreeze alarm set point A01 Antifreeze heater in defrost auxiliary heater in heating set point A08 Represents the threshold below which the auxiliary heater is ON in defrost and in heating mode In the heat pumps HO1 1 3 6 during heating mode it represents the set point for the auxiliary heater during the defrost cycle it represents the set p
71. if the operation of the pump outlet fan is subject to the controller para meter H05 2 when the compressor is requested to stop the control first stops the compressor and the pump outlet fan If the pump outlet fan is always ON HO5 1 it is only stopped in standby mode Key 1 compressor 2 pump 3 inlet fan 4 time delay between pump inlet fan and compressor Maximum tandem compressor operating time c09 In the case of two compressors in tandem per circuit one compressor should not operate for longer than the time set for c09 while the other compressor in the circuit is OFF This prevents the oil shared in common from migrating over the allowed limit towards the active compressor and consequently avoids damage when inactive compressor next starts FIFO logic due to poor lubrication As a result compressor 1 or 2 in circuit 1 if requested to operate continuously will actually stop OFF after the time c09 and hand over to compressor 2 or 1 that was previously OFF This function always considers the compressor times Any value lower than the time set for c03 will be ignored and the compressors if the above condition is satisfied will switch over after the time c03 When C9 0 the function is disabled the compressors will not switch over Hour counter compressor 1 2 3 4 c10 c11 c12 c13 These indicate the number of operating hours of compressor 1 2 3 4 expressed in hundreds of hours Pressing A and W
72. imit A1 then 1 bypass waiting time A3 ON 2 stop the compressors if already off go to pt 4 3 bypass waiting time A3 OFF 4 close damper with 50 duty cycle if FC active and the ambient temperature means damper open or Al Al A2 dead zone If FC is not active go to pt 6 5 bypass waiting time A3 after having closed r28 twice from the end of the last period 6 If B2 lt A1 the alarm A1 is activated The alarm reset depends on P5 Key 1 freecooling or comp 2 probe B2 32 uC 030220731 rel 1 4 26 10 2009 Antifreeze low room temperature air air alarm differential A02 This represents the differential for the activation of the antifreeze alarm low room temperature in air air units the alarm condition cannot be reset until the temperature exceeds the set point differential A01 A02 Antifreeze alarm bypass time low room temperature from unit start in heating mode A03 This represents the delay in the activation of the antifreeze alarm when starting the system In the case of air air units this parameter represents the delay time for the low room temperature return intake air signal only in heating mode This means that the room being heated is too cold threshold set by the user Antifreeze heater auxiliary heater set point in cooling A04 Determines the threshold below which the antifreeze heater is switched on In the air air units HO1 0 1 this parameter represents the temperature value below wh
73. in the event of uC module only the alarm relay will be used AHt high temperature warning when starting the system The advice does not activate the relay and displays the message AHt ALt low temperature warning when starting the system The advice does not activate the relay and displays the message ALt ELS EHS warning low high power supply alarm If the power supply voltage is too low or too high the corresponding message is displayed In these cases the correct operation of the pC is no longer guaranteed In the low voltage conditions only the requests to deactivate the loads are effected Any start up requests remain pending The high voltage condition involves the deactivation of all the energised relays uC 030220731 rel 1 4 26 10 2009 51 52 L Low load warning The warning does not activate the relay and displays the message L reset is automatic D1 defrost signal circuit 1 When the defrost is on circuit 1 the display shows the message D1 D2 defrost signal circuit 2 When the defrost is on circuit 2 the display shows the message D2 Driver All the driver alarms on the uC that stop the unit feature automatic reset Consequently the possibility to select the automatic resetting of the entire system must be selected for the drivers by setting the corre sponding parameters The uC can send the Go Ahead command according to the normal procedure for resetting the alarms from the
74. ing settings d17 0 function disabled d17 gt 0 function enabled with relative set point which represents the minimum defrost temperature set by the manufacturer Above the set point the unit performs the Fan Defrost e Fan settings parameters F Fan output F01 Enables the operation of the fans FO1 0 fans absent FO1 1 fans present The PWM output 1 or 2 depending on the value of parameter H02 requires the presence of the optional fan control cards ON OFF for the CONVONOFF module or speed variation for MCHRTF or FCS three phase Fan operating mode F02 This establishes the operating logic for the fans F02 0 always ON at maximum speed independently from the compressors The fans are only switched OFF when the unit is in standby F02 1 ON at maximum speed when at least one compressor in the corresponding circuit is ON parallel operation in each circuit F02 2 ON when the corresponding compressor is ON with ON OFF control based on the temperatu re pressure settings for the minimum and maximum speed parameters F05 F06 F08 and F09 When the compressors are stopped the corresponding fans are also stopped irrespective of the condensing temperature pressure Cooling ON OFF Heating ON OFF Or O Key 100 lt 100 1 speed 2 condensing temperature pressure F04 F04 3 hysteresis 0 Fos G ki TFoe D Hed Fig 5 a k 100 F04 F03 0 7 3
75. ir heat pump 2 air_water chiller 3 air_water heat pump 4 water_water chiller 5 water_water heat pump with reversal on gas circuit 6 water_water heat pump with reversal on water circuit 7 condensing unit 8 reverse cycle condensing unit 9 water cooled condensing unit 10 reverse cycle water cooled condensing unit F Flag 1 54 R W 182 Integer H02 Number of condensers 0 1 circuit 1 2 circuits Flag 12 R W 12 Digital H03 Number of evaporators 0 1 evaporator 1 2 evaporators Flag 13 R W 13 Digital H04 Number of compressors per circuit 0 1 comp ON 1 circuit single circuit 1 2 comp in tandem ON 1 circuit single circuit 2 1 comp per circuit 2 circuits two circuits 3 2 comp in Tandem 2 circuits two circuits 4 1 compressor and 1 Capacity step in one circuit 5 1 compressor and 1 capacity Step per circuit Flag 55 R W 183 Integer H05 Pump outlet fan Air Air mode output N2 0 absent 1 always ON 2 ON upon request of the controller 3 ON upon request of the controller and for set time Flag 56 R W 184 Integer H06 Cooling Heating digital input 0 absent 1 present Flag 14 R W Digital H07 ON OFF digital input 0 absent 1 present Flag 15 R W Digital H08 uC network configuration 0 uC only 1 C valve 2 uC exp 3 uC exp valve Flag 57 R W 185 In
76. ircuit 2 LP1 Low pressure circuit 1 The alarm depends on P15 P7 and P3 P15 0 P07 0 the alarm is detected only if the compressors in circuit 1 are ON and after the time P03 from when the compressors started otherwise it is immediate P15 1 P07 0 the alarm is detected even if the compressors in circuit 1 are off after the time P03 P15 0 P07 1 the alarm is detected only if the compressors in circuit 1 are ON and after the time P03 from when the compressors started otherwise it is immediate and if in heat pump mode Is activated for pressure values less than 1 bar P15 1 P07 1 the alarm is detected also if the compressors in circuit 1 are Off after the time P03 and if in heat pump mode is activated for pressure values lower then 1 bar The hysteresis for this alarm is 1 bar LP2 Low pressure circuit 2 As for LP1 but relating to circuit 2 PL1 Capacity control for low pressure circuit 1 Indicates that circuit 1 on the unit is operating in capacity control mode due to low pressure heat pump only PH1 Compressor part load circuit 1 Indicates the part load of circuit 1 due to high pressure This situation is signalled by the message PH1 on the display the activation of the warning relay PH2 Compressor part load circuit 2 As for PC1 but for circuit 2 tP General thermal overload The alarm is detected irrespective of the status of the pump and the compressors The compressors the pumps and fans stop
77. isabled for safety reasons as the status of Driver 1 is not known EP2 EEPROM error driver 2 As for EP1 but relating to driver 2 ES1 probe error driver 1 The circuit 1 is disabled for safety reasons as the status of Driver 1 is not known ES2 probe error driver 2 As for ES1 but relating to driver 2 EU1 EVD 1 error valve open when starting If when starting the system the Driver detects that the valve is still open an alarm is sent to the C2 that stops the compressors and the fans in the corresponding circuit EU2 EVD 2 error valve open when starting As for EU1 but relating to EVD 2 Eb1 EVD 1 battery alarm The EVD 1 battery alarm stops the compressors from starting so as to prevent the risk of liquid returning to circuit 1 and disables the corresponding fans Eb2 EVD 2 battery alarm The EVD 2 battery alarm stops the compressors from starting so as to avoid the risk of liquid returning to circuit 2 and disables the corresponding fans uC 030220731 rel 1 4 26 10 2009 Panel version 7 CONNECTIONS ACCESSORIES AND OPTIONS 7 1_ Connection diagram The following figure shows the connection diagram for the C2 in the panel and DIN rail versions
78. keypad Ed1 tLan communication error with Driver 1 The alarm is generated after a fixed time 5 s from when the uC loses contact with Driver 1 In this case circuit 1 is disabled for safety reasons Ed2 tLan communication error with Driver 2 expansion card As for Ed1 but relating to driver 2 SH1 low superheat alarm circuit 1 The low superheat alarm for circuit 1 after a fixed time 5 s inhibits the circuit 1 for safety reasons The risk is that the compressors will flood SH2 low superheat alarm circuit 2 As for SH1 but relating to driver 2 n01 MOP warning maximum operating pressure circuit 1 The warning appears on the display and if the expansion card is fitted the corresponding relay is activated n02 MOP warning maximum operating pressure circuit 2 The warning appears on the display and if the expansion card is fitted the corresponding relay is activated LO1 LOP warning lowest operating pressure circuit The warning appears on the display and if the expansion card is fitted the corresponding relay is activated LO2 LOP warning lowest operating pressure circuit 2 As for LO1 but relating to driver 2 HA1 high evaporator temperature warning circuit 1 The warning appears on the display and if the expansion card is fitted the corresponding relay is activated HA2 high evaporator temperature warning circuit 2 As for HAJ but relating to driver 2 EP1 EEPROM error driver 1 The circuit 1 is d
79. l where envisaged to the earth in the electrical panel Key 1 to pchiller 2 earth 3 to motor 7 5 Fan ON OFF control board code CONVONOFFO The relay boards code CONVONOFFO are used for the ON OFF management of the condenser fans The control relay has a switchable power rating of 10 A at 250 Vac in ACI 1 3 HP inductive code CONV0 10A0 The CONV0 10A0 boards convert the PWM signal at terminal Y on the uC to a standard 0 to 10 Vdc or 4 to 20 mA signal The FCS series three phase controllers can be connected to the pC without using this module 7 6 PWM to 0 to 10Vdc or 4 to 20 mA conversion board for fans code CONVO 10A0 gt S 7 7 Minimum and maximum fan speed calculation This procedure should only be performed when the fan speed control boards are sued code MCHR TF 0 0 it must be stressed that if the ON OFF modules code CONVONOFFO or alternatively the PWM to 0 to 10 V converters code CONVO I0A0 are used parameter F03 should be set to zero and parameter F04 to the maximum value Given the different types of motors existing on the market the user must be able to set the voltages supplied by the electronic board corresponding to the minimum and maximum speeds In this regard and if the default values are not suitable proceed as follows set parameter F02 0 fans always ON and set F03 and F04 to zero e increase F04 until the fan operates at a sufficient speed ma continues to turn if lef
80. l output 7 0 Flag 63 R W 63 Digita Digital output 8 0 Flag 64 R W 64 Digita Digital output 9 0 Flag 65 R W 65 Digita Digital output 10 0 Flag 66 R W 66 Digita Enable digital output from Supervisor 0 8000__ Flag 13 R nteger Defrost status 104 R stato defrost nteger 0 no Defrost 1 Def circuit 1 2 Def circuit 2 3 Def circuit 1 and 2 5 Fan Def circuit 1 10 Fan Def circuit 2 15 Fan Def circuit 1 and 2 Table 4 1 uC 030220731 rel 1 4 26 10 2009 31 DESCRIPTION OF THE To modify the parameters see chapter 4 Parameters RAMETERS e Probe settings parameters see Table 4 a Type of probe from 01 to 08 enables the reading of the corresponding analogue input or sets the function e Functions of the probes Type of unit Parameter H01 Temp control Antifreeze probe Cond temp Press probe Antifreeze Cond temp Press probe probe 1 circuit probe 1 circuit probe probe 2 circuit 1 circuit 2 evaporator 2 circuit 0 ait air Bl B2 low outlet B3 B4 ot used B7 B8 temperature q air air heat pump cooling heating Bl B2 low outlet B3 B4 ot used B7 B8 temperature 2 air water Chiller B1 B2 single circuit B2 B3 B4 B6 B7 B8 B1 B5 two circuits 3 air water heat pump cooling heating B1 B2 single circuit B2 B3 B4 B6 B7 B8 B1 B5 two circuits
81. larms mute the buzzer if present and deactivate the alarm relay press once L Access the direct parameters press for 5 s Select item inside the programming area and display value of direct parameters confirm the changes to the parameters press once l L Program parameters afters entering password press for 5 s J Select top item inside the programming area press once or press and hold ncrease value press once or press and hold Switch from standby to chiller mode P6 and vice versa press for 5 s K Select bottom item inside the programming area press once or press and hold Decrease value press once or press and hold Switch from standby to heat pump mode P6 0 and vice versa press for 5 s J K anual alarm reset press for 5 s Immediately reset the hour counter inside the programming area press for 5 s L J Force manual defrost on both circuits press for 5 s Table 1 b 1 2 4 Programming and saving the parameters press 29 and sel for 5 seconds the heating and cooling symbol and the figure 00 are displayed use 3 and 28 to set the password page 28 and confirm by pressing ser use Ys and 8 to select the parameter menu S P or levels L P and then press ser use 3 and 3 to select the parameter group and then press set use 3 and to select the parameter and then press ser after making the changes to the parameter press set to confirm
82. layed The enable disable cooling heating and reset counter functions are also available Values 0 keypad disabled 1 keypad enabled default Serial address H10 Establishes the address of the instrument for the serial connection via an optional board to a PC for supervision and or telemaintenance Selection map outputs H11 This parameter is used to arbitrarily associate some digital outputs to the devices on the unit H11 0 standard default for units with one compressor per circuit H04 0 2 H11 1 For cooling only units with two compressors H01 0 2 4 7 9 and H04 1 3 5 H11 2 The outputs of the expansion follow the same logic for the 2nd circuit For H01 1 3 5 6 8 10 and HO4 1 3 5 H11 3 The outputs of the expansion follow the same logic for the 2nd circuit For HO1 1 3 5 6 8 10 and HO4 1 3 5 H11 4 For H01 1 3 5 6 8 10 and H04 0 1 H11 5 For cooling only units with two compressors HO1 0 2 4 7 9 and H04 0 associazione agli organi dell unit uscite H11 0 H11 1 H11 2 H11 3 H11 4 H11 5 CI compressor 1 compressor 1 compressor 1 compressor 1 compressor 1 compressor 1 Q heater 1 heater 1 heater 1 reversing valve 1 reversing valve 1 heater 1 G Pump evaporator fan on Pump evaporator fan on Pump evaporator fan on Pump evaporator fan on evaporator pump Pump evaporator fan on air air units air air units air air units air air u
83. ly in chiller mode 127 2 enabled only in heat pump mode 127 3 enabled in chiller and heat pump modes Minimum compressor on time to determine low load condition 128 This parameter represents the minimum compressor on time below which the low load condition is determined Whenever the compressor stops the controller analyses the load status If already in low load condition the time considered by the controller for the analysis becomes r28 x r29 r02 in chiller mode or r28 x r30 r04 in heat pump mode Differential during the low load condition in chiller mode 129 This parameter represents the new differential considered by the controller in chiller mode during the low load condition Specifically r02 is replaced by r29 Differential during the low load condition in heat pump mode 130 This parameter represents the new differential considered by the controller in heat pump mode during the low load condition Specifically r04 is replaced by r30 on o p on J lt off gt gt off gt r01 r01 r02 rot r01 r29 Fig 5 b m s l a f or r03 DF G ei r03 i ei G Fig 5 b n Heating compensation constant mode Heat pump 131 Sets the coefficient that controls the heating compensation algorithm In heating mode if r31 is positive the set point decreases as the outside temperature decreases measured by the outside probe if on the
84. matic reset the controller will make 10 attempts to re start the pumps after which the FL alarm will replace FLb If the flow alarm features manual reset when first activated the controller will display the alarm FLb switching over the pumps when activated again the FL alarm will replace FLb E1 to E8 probe error detected even when the unit is in Standby The presence of a probe alarm causes the deactivation of the compressor the condenser fans the pump outlet fan in AIR AIR units and the heaters so as to avoid fires in the air air units the buzzer and alarm relay are activated and the display starts flashing If the probe has a compensation function the unit will continue a operate correctly with the exception of the corresponding function and the warning relay will be activated and a message shown on the display from E1 to E8 for probes from B1 to B8 uC 030220731 rel 1 4 26 10 2009 Hcl to Hc4 compressor operating hour limit exceeded warning When the number of operating hours for the compressor exceeds the maintenance threshold as default equal to zero and consequently the function is disabled the maintenance request signal is activated The buzzer and the alarm relay are not activated however the warning relay is activated with the expan sion card fitted Epr EPb EEPROM error A problem has occurred when saving the parameters to the unit s non volatile memory EEPROM in the event of an Epr error the
85. mode ends automatically when the antifreeze set point A01 the differential A02 is reached returning to the previous mode in any case the function can be terminated manually by modifying the parameters or disconnecting the power supply to the device In this case the display will be as follows operating mode LED OFF e cooling heating flag not switched not detected by the supervisor e antifreeze alarm A01 remains active even at the end of the special operation if the unit was previously ON deactivated by manual reset or in standby Al0 3 heaters ON based on the respective set point A04 and A08 e Do not use with H1 6 uC 030220731 rel 1 4 26 10 2009 33 e Probe readings parameters B Select probe to be shown on display b00 Sets the probe reading to be displayed 0 j probe probe probe probe probe probe probe probe Bl B2 B3 B4 B5 B6 B7 B8 8 set point without compensation 9 dynamic set point with possible compensation 10 remote ON OFF digital input status For the list of parameter probe associations see Table 4 d Note probes that are not present cannot be selected e Compressor settings parameters c Minimum ON time c01 This establishes the time that the compressor must remain ON for when started even if the stop signal is sent Key 1 signal 2 compressor 3 min ON time interval Minimum OFF time c02 This establishes t
86. nits air air units C4 reversing valve 1 Compressor 2 or capacity Compressor 2 or capacity Compressor 2 or capacity Compressor 2 or capacity condenser fan 1 control comp 1 control comp 1 control comp 1 control comp 1 c5 alarm alarm reversing valve 1 alarm alarm alarm C6 compressor 2 compressor 3 compressor 3 compressor 3 not used compressor 2 C7 heater 2 heater 2 heater 2 reversing valve 2 heater 1 heater 2 C8 Condenser pump backup Condenser pump backup Condenser pump backup Condenser pump backup Condenser pump backup Condenser pump backup c9 reversing valve 2 Compressor 4 or capacity Compressor 4 or capacity Compressor 4 or capacity not used condenser fan 2 control comp 2 control comp 2 control comp 2 C10 Warning Warning reversing valve 2 Warning Warning Warning Capacity control logic H12 Specifies the logic for the activation of the capacity control steps for the compressors and the 4 way reversing valve H12 0 4 way reversing valve and capacity control normally energised H12 1 4 way reversing valve and capacity control normally de energised Default value H12 2 4 way reversing valve normally de energised and capacity control normally energised H12 3 4 way reversing valve normally energised and capacity control normally de energised Note in the event of capacity control the rotation between compressor and corresponding valve is disa bled FIFO or time logic can be used between t
87. o be reached This delay is also counted when reversing the 4 way valve in the refrigerant circuit Part load in high pressure P04 enable or disable the part load operation of the circuit in high pressure The function is valid if the unit is fitted with tandem or capacity controlled compressors and pressure transducers In the event of high pressure alarms that is for values over P18 hysteresis 0 5 bar the controller deactivates a load step in the circuit in question and waits 10 seconds After this interval if the alarm is still active the unit is stopped otherwise it continues to operate in part load mode In this situa tion the display shows the message PC1 and or PC2 depending on the circuit This condition remains active until the pressure falls below the value corresponding to the maximum speed of the condenser fans F05 F06 Below this value the unit reactivates the load step that had previously been deactivated Alarm reset P05 Enables automatic reset for all those alarms that normally feature manual reset high pressure low pressure flow switch antifreeze as per the following table P05 0 default high pressure low pressure and antifreeze low temperature with manual reset PO5 1 all the alarms with automatic reset P05 2 high pressure and antifreeze low temperature manual low pressure automatic P05 3 high pressure manual low pressure and antifreeze low temperature automatic P05 4 high and low
88. oint for the activation of the antifreeze heaters In the air air units HO1 0 it only represents the set point for the heating heaters In heat pump mode H1 5 10 this represents the set point for the antifreeze heater and the antifreeze probe becomes B3 B7 Antifreeze heater auxiliary heater differential in heating A09 Represents the differential for the activation deactivation of the antifreeze heater in defrost auxiliary heater in heating Automatic start for antifreeze A10 This parameter is valid when the unit is in standby The operating mode switchover delay times are ignored A10 0 function not enabled A10 1 Auxiliary heater and pump are ON at the same time based to the respective set points A04 or A08 according to the settings of the antifreeze or auxiliary heaters the exception is when H01 1 in cooling in which case not even the pump will be activated Each circuit in the case of two evaporators will be controlled based on its own probe B2 B6 A10 2 pump and auxiliary heater ON independently based on the respective set point A04 or A08 If the temperature falls below the antifreeze alarm set point A01 the unit is started in heating mode controlling the steps compressors based on the set point A01 and differential A02 in proportional mode Each circuit when there are 2 evaporators will be controlled using tts own probe B2 B6 A10 2 pump and support heaters activated together based on the set point A04 This
89. ondenser probe 1 and 2 supply probe electrical heater 1 and 2 evaporator 1 and 2 supply fan ambient probe 9 compressor 1 10 __ high pressure 1 and 2 11__ compressor overload 1 and 2 12__ low pressure land 2 13 __ compressor 2 14 __ compressor 3 15 __ compressor 4 INID BAININ Fig 3 a c 3 2 AIR AIR heat pum 3 2 1 Single circuit Key condernser fan overload fan condenser probe supply probe electrical heater evaporator supply fan overload supply fan 9 compressor 1 10 _ high pressure 11 _ compressor overload 12 __ low pressure 13 ambient probe 14 __ compressor 2 15 __ reversing valve INIAN BAININ Fig 3 b a uC 030220731 rel 1 4 26 10 2009 1 3 2 2 Two circuits Key i condenser fan overload 1 and 2 fan condernser probe supply probe electrical heater 1 e 2 evaporator 1 and 2 supply fan overload supply fan 9 compressor 1 10 _ high pressure 1 e 2 11 compressor overload 1 and 2 12__ low pressure land 2 13 ambient probe 14 __ compressor 2 15 reversing valve land 2 16 compressor 3 17 compressor 4 INID 1 W Nh S Fig 3 b b 3 2 3 Two circuits 1 condenser fan circuit Key condenser fan overload fan condernser probe 1 and 2 supply prob
90. opying the parameters from the key to the instrument e open the rear hatch of the key and place the dip switch n 1 in the OFF position and the dip switch n 2 in the ON position see Fig 7k b Close the hatch connect the key to the connector of the instrument e press the button on the key and keep it pressed checking the LED signal sequence at first it is red after a few seconds it becomes green e ifthe sequence of signals is as indicated above the copying operation has been completed correctly green LED ON the button can be released after a few seconds the LED turns off and the key can be disconnected from the instrument e in case of different signals if the green LED doesn t turn on or if there are some flashes there s a problem Refer to the corresponding table for the meaning of the signals The operation takes maximum 10 seconds to complete If after this period the completed operation signal hasn t yet appeared i e the green LED ON try releasing and pressing the button again In the event of Fig 7 k b flashes refer to the corresponding table for the meaning of the signals LED signal error meaning and solution red LED flashing Flat batteries at the be The batteries are flat the copying cannot be carried out ginning of the copying Replace the battery only on PSOPZKEY00 green LED Flat batteries at the end The copying operation has been carried out cor
91. or 22 to cancel the changes press PS to return to the previous menu o save the modifications press 22 repeatedly until reaching the main menu Note a the parameters that have been modified without being confirmed using the sel button return to the previous value b if no operations are performed on the keypad for 60 seconds the controller exits the parameter modification menu by timeout and the changes are cancelled WO po OY Di ON NS m 1 2 5 Keypad The keypad is used to set the unit operating values see Parameters alarms Keypad combinations 8 uC 030220731 rel 1 4 26 10 2009 2 CONNECTIONS 2 1 General diagram Optional board CONVONOFF PWM digital CONVo 10A0 7 PWM analogic OOO converter MCHRTF A0 n speed regulator 2 2 Network layout tLAN z t ii EVD 40 MCH200002 EVD 40 driver O expansion driver for E driver for electronic uC board for caer electronic expansion p SE E expansion valve _ valve LANAN converter WOW PSOPZKEY programming key gt O wwoodbuse ru Ema CAREL Supervisory BST MCH200485 ee Me temperature RS485 serial ca FA MHT pro
92. ost has a fixed duration that depends on 007 d02 1 the defrost starts and ends according to the temperature or pressure thresholds see d03 and d04 d02 2 the pressure transducer and temperature probe are both located on the outside exchanger the defrost starts when the value read by the pressure transducer is below the threshold d03 and ends when the value read by the temperature probe is above the threshold d04 during the defrost the pressure probe controls the fan speed as in chiller mode so as to limit the pressure even if the NTC probe caked by ice delays the end defrost In any case after the maximum time allowed for the defrost the unit will always exit the defrost procedure Start defrost temperature pressure or condenser antifreeze alarm set point d03 For heat pumps with air cooled condensers HO1 1 3 8 10 12 this sets the temperature or pressure below which the defrost cycle starts To start the defrost cycle the condition must be valid for the time d05 For water water heat pumps with reversal on the gas circuit H01 5 10 it defines the set point for the activation of the antifreeze alarm for the outdoor exchanger cooling water evaporator in heating mode on probe B3 End defrost temperature pressure d04 Establishes the temperature or pressure above which the defrost cycle ends Minimum start defrost time d05 Establishes the time that temperature pressure must remain below the start defrost threshold d03
93. pC continues to perform the control functions with the data present in the volatile memory RAM where there is a physical copy of all of the data After the first power failure the configuration will be lost The buzzer and the alarm relay are not activated If the occurs when starting the unit EPb the controller will not operate ESP communication error with expansion card If the controller loses communication with the expansion card the entire system will be stopped to avoid adversely affecting the unit The alarm relay is activated and the display will show the message with the red LED on steady EL1 2 warning zero crossing error circuit 1 2 If the controller detects errors in the power supply control may be lost over the fan speed In this case the display will show a warning and the fans will be controlled at maximum speed The alarm is reset automatically so as to not affect the operation of the unit If the expansion card is used the warning relay is activate dF1 2 warning end defrost circuit 1 2 due to maximum time If the defrost ends after the maximum time when end defrost by temperature or from external contact has been selected the unit displays the text dF1 for circuit 1 or dF2 for circuit 2 The message is cancelled using the delete alarm procedure or when the next correct defrost cycle is completed The buzzer and the alarm relay are not activated If the expansion card is used the warning relay is activated
94. perated When stopping the valve is managed first and then the actual compressor as a whole Both FIFO logic and timed operation will involve either one circuit or the other The activation and deactivation of the val ves are not subject to timers but rather only a hysteresis that is equal to the set point and the differential of the step in fact the valve performs the same function as a hermetic compressor r05 3 direct correspondence between the digital inputs and the compressor relays condensing units only Type of compressor control r06 This parameter is used to set the logic for maintaining the set point r06 0 proportional on inlet r06 1 proportional on inlet dead zone see Dead zone below r06 2 proportional on outlet r06 3 proportional on outlet with dead zone r06 4 on outlet by time with dead zone see timed outlet temperature control DEAD ZONE ON The dead zone essentially shifts the proportional band from the set i point by the value set for the parameter r07 This parameter is valid in i all configurations if enabled for r07 0 dead zone set and enabled 3 l l Key Figure 5 b c i r06 enable the dead zone enabled if r06 1 or 3 i r07 dead zone i r01 cooling set point r02 cooling differential l I Set i A g OFF r01 r01 r07 r02 4 01 r07 In chiller cooling mode the dead zone moves the cooling proportional band above the set point by the a a value r07 Key Figure 5
95. range of temperatu re and humidity specified in the manual e Do not try to open the device in any way different than that indicated in the manual e Do not drop hit or shake the device because the internal circuits and mechanisms could suffer irreparable damage e Do not use corrosive chemical products aggressive solvents or detergents to clean the device e Do not use the product in application environments different than those specified in the technical manual o All the above reported suggestions are valid also for the control serial unit programming key or never theless for any other accessory in the product portfolio of CAREL CAREL adopts a policy of continuous development Therefore CAREL reserves the right to carry out modifications and improvements on any product described in the present document without prior notice The technical data in the manual can undergo modifications without obligation to notice The liability of CAREL in relation to its own product is regulated by CAREUs general contract conditions edited on the website www carel com and or by specific agreements with clients in particular within the criteria consented by the applicable norm in no way will CAREL its employees or its branch offices affi liates be responsible for possible lack of earnings or sales loss of data and information cost of substitute goods or services damage to things or persons work interruptions or possible direct indirect
96. rectly but at the end flashing of the copying only on of the operation the voltage of the batteries is low PSOPZKEY00 It is advisable to replace the batteries Alternate Not compatible instru The setup of the parameters cannot be copied since the model of red green LED ment the connected parameters is not compatible Such error happens flashing only with the DOWNLOAD function check the controller code and orange signal make the copy only on compatible codes red and green Copying error Error in the copied data Repeat the operation if the problem persi LEDs O sts check the batteries and the connections of the key red LED always Data transmission error The copying operation hasn t been completed because of serious ON data transmission or copying errors Repeat the operation if the problem persists check the batteries and the connections of the key LEDs OFF Batteries disconnected _ Check the batteries for the PSOPZKEY00 Power supply not Check the power supply for the PSOPZKEYAO connected Table 7 c Technical specifications Power supply to the Use three 1 5 V 190 mA batteries Duracell D357H or equivalent PSOPZKEY00 Maximum current supplied 50 mA max Power supply to the switching power supply PSOPZKEYAO Input 100 to 240 V 10 10 50 60 Hz 90 mA Output 5 Vdc 650 mA Operating conditions 0750 C r H lt 90 non condensing Storage conditions 20770 C r H lt 90 non condensing Case Plastic dimensions 42x10
97. regular intervals independently from the compressors as per the Burst setting see parameters c17 and c18 When the heating or cooling signal is received first the evaporator pump outlet fan starts always ON and then the compressor after the set times c07 c08 The pump will not be stopped until all the compressors are Off A Note with air air units HO1 0 1 if heaters are used as the heating device the fan must not be stopped while heating is active This would cause the risk of fire Therefore if HOI 0 or 1 HO5 must be set to 1 Cooling heating digital input H06 Establishes whether the cooling heating selection from digital input is enabled see parameters P08 P09 P10 P11 P12 and P13 The open status places the unit in cooling operation vice versa in heating D IN Open Cooling D IN Closed Heating ON OFF digital input H07 Establishes whether the ON OFF selection from digital input is enabled or disabled If the selection is enabled HO7 1 the open status switches the unit Off while in the closed status the unit may be OFF or ON as controlled by the keypad uC 030220731 rel 1 4 26 10 2009 4 pC network configuration Ho8 Establishes the layout of the tLan network 0 uC only 1 uC valve 2 uC exp 3 uC exp valve Enable keypad H09 Used to disable the modification of the DIRECT and USER parameters from the keypad The value of the parameters can always be disp
98. ressure compressor 2 compressor 3 compressor 4 water pump W OO W BG IN s Fig 3 j b 3 11 Reverse cycle water cooled condensing unit 3 11 1 Single circuit Key condenser probe condenser antifreeze heater compressor 1 high pressure compressor overload low pressure compressor 2 reversing valve W OCO N OD U1 B W NO uC 030220731 rel 1 4 26 10 2009 23 3 11 2 Two circuits Key 1 condenser probe 2 condenser 1 and 2 3 antifreeze heater 1 and 2 4 __ reversing valve 5 compressor 1 6 __ high pressure 1 and 2 7___ compressor overload 1 and 2 8 __ low pressure 1 and 2 9 __ compressor 3 10 compressor 2 11 __ compressor 4 12__ water pump Fig 3 k b 24 uC 030220731 rel 1 4 26 10 2009 4 PARAMETERS 4 1 General parameters The parameters are divided into 4 different types according to their level of access by the user pas sword and their function For each level only the access to the parameters of the same or lower level can be set This means that through factory password acessing the men levels L P it is possible to set the desired level for each parameter e Factory parameters Accessible with the 66 Factory password allow the configuration of all the unit parameters e Super User parameters Access
99. ssure Depends on P05 OFF G3 4 OFF 2 0 32 R Circuit 2 alarm Digital PLI Capacity control for low Automatic OFF C2 5 ON Signal on display 2 pressure circuit 1 TP General overload Depends on P08 OFF OFF OFF ON 35 R General warning Digital tC Circuit 1 overload Depends on P08 OFF C1 2_ OFF 8 31 R Circuit 1 alarm Digital tC2 Circuit 2 overload Depends on P08 OFF G3 4 OFF 2 O 32 R Circuit 2 alarm Digital LA advice Depends on P08 ON ON 40 R General advice Digital FL Flow controller alarm Depends on P08 OFF OFF OFF 0 35 R General alarm Digital FLb Backup pump warning Automatic ON 40 R General advice Digital El Probe B1 alarm Automatic OFF OFF OFF OFF 0 36 R Probe alarm Digital E2 Probe B2 alarm Automatic OFF OFF OFF OFF ON 36 R Probe alarm Digital E3 Probe B3 alarm Automatic OFF OFF OFF OFF ON 36 R Probe alarm Digital E4 Probe B4 alarm Automatic OFF OFF OFF OFF ON 36 R Probe alarm Digital E5 Probe B5 alarm Automatic OFF OFF OFF OFF ON 36 R Probe alarm Digital E6 Probe B6 alarm Automatic OFF OFF OFF OFF ON 36 R Probe alarm Digital E7 Probe B7 alarm Automatic OFF OFF OFF OFF ON 36 R Probe alarm Digital E8 Probe B8 alarm Automatic OFF OFF OFF OFF O 36 R Probe alarm Digital Hc1 4 Hour warning C1 4 Automatic ON 37 R Compressor advice _ Digital EPr EEPROM error during Automatic z gt 2 gt ON 40 R
100. st with 2 circuits F 0 2 Flag 0 D 46 R W 174 Integer 0 Indipendent 1 If both at start defrost 2 If at least one at start defrost d16 Forced ventilation time at the end of the defrosting F 0 360 s 0 D 47 R W 175 Integer d17 Defrost with compressors OFF F 0 80 0 C F 0 1 0 D 22 R W 22 Analog Table 4 e 4 3 6 Fan setting parameters F display parameter and description default min max U O M variat jdef visibility supervis Modbus variabile indicat level variable type FOI Fan output F 0 1 Flag 1 0 10 R W 10 Diigital 0 absent 1 present F02 Fan operating mode U 0 3 Flag 1 0 F 48 R W 176 Integer 0 always ON 1 depending ON the compressor in parallel operation mode 2 depending ON the compressors in ON OFF control 3 depending ON the compressors in speed control mode F03 Min voltage threshold for Triac F 0 Fo4 step 1 35 F 49 R W 177 Integer F04 Max voltage threshold for Triac F03 100 step 1 75 F 50 R W 178 Integer F05 Temp value for min speed Cooling U 40 0 C 0 35 0 F 24 R W 24 Analog Pressure value for min speed Cooling m 12 bar 0 3 0 FP 23 R W 23 Analog F06 Differential value for max speed Cooling U 0 50 0 C F 0 0 0 FN 26 R W 26 Analog Differential pressure value for max speed Cooling 0 50 bar 0 3 0 FP
101. t circuit the fans are exclusively controlled based on the pressure or temperature read by the sensor in the first circuit e with two refrigerant circuits the fans are controlled based on the higher temperature pressure of the two circuits In heat pump mode the output depends on the lower temperature or pressure The output used is Y1 Vice versa with 2 ventilation circuits HO2 1 each PWM output is independent and depends on its own condenser probe B3 or B4 for circuit 1 and B7 or B8 for circuit 2 Number of evaporators H03 This establishes the number of evaporators present when there are 2 or 4 compressors obviously with 2 circuits including the expansion With one evaporator HO3 0 the management of the heaters and the antifreeze function is performed only on B2 Vice versa with 2 evaporators HO3 1 antifreeze control will be performed using B2 and B6 while input B5 is used to control the water outlet temperatu re Number of compressors circuits H04 This establishes the number of compressors per circuit and the number of circuits For further details see Table 4 g Evaporator pump fan operating mode H05 This establishes the operating mode for the evaporator water pump or the outlet fan in air air units H05 0 pump disabled the flow switch alarm is ignored H05 1 always ON the alarm is managed H05 2 ON when called by compressor the alarm is managed H05 3 the pump will be started and stopped at
102. t free e copy this value to parameter F03 this sets the voltage for connect a voltmeter set for AC 250V between the two L e sure that after having stopped tt it he minimum speed terminals the two external contacts e increase F04 until the voltage stabilises at around 2 Vac ind motors Once the value has been found it will be evident t no longer decreases In any case do not increase F04 furthe FO2 3 The operation is now completed uC 030220731 rel 1 4 26 10 2009 uctive motors or 1 6 1 7 Vac capacitive hat even when increasing F04 the voltage r so as to avoid damaging the motor 55 220 Vac Fig 7 e al uchiller 24 Vac y GND 6000 1234 S667 8 OO 00 No of Nc Fig 7f al uchiller 24 Vac yX GND OOOO 1234 T oa O e GO 10V GO 420mA Fig 7 g H io T OOo Fig Zh 7 8 Programming key code PSOPZKEYAO The programming keys PSOPZKEYOO and PSOPZKEYAO for CAREL controllers are used for copying the complete set parameters for pC The keys must be connected to the connector 4 pin AMP fitted on the controllers and can work with the instruments ON or OFF as indicated in the operating instructions for the specific controller The
103. t point r1 negative compensation r17 2 NDUN Maximum deviation from the set point r18 Indicates the maximum deviation from the set point beyond which compensation is stopped maxi mum and minimum limits in reference to the set point Start compensation temperature in cooling outside probe r19 Sets the temperature measured by the outside probe above which the compensation function starts cooling value between 40T80 C Start compensation temperature in heating outside probe 120 Sets the temperature measured by the outside probe below which the compensation function starts heating the value must be between 40T80 C Second cooling set point from external contact r21 Represents the alternative to r01 if an associated digital input is closed see parameter P08 between r13 and r14 Second heating set point from external contact r22 Represents the alternative to r03 if an associated digital input is closed see parameter P08 between r15 and r16 uC 030220731 rel 1 4 26 10 2009 47 50 Key chiller chiller in low load heat pump heat pump in low load temperature Gt Ot ho 48 Buffer tank suppression low load 127 The low load condition is determined when only one compressor is started and then is stopped after operating for less than the time set for parameter r28 The settings are 127 0 the function is disabled 127 1 enabled on
104. tal 1 present 06 Probe type B6 0 not present F 0 1 Flag 1 0 X 4 RW 4 Digital 1 present 07 Probe type B7 0 not present F 0 2 lag 1 0 X 16 R W 144 Integer 1 NTC Cond Probe 2 NTC Out Probe 08 Probe type B8 0 not present F 0 4 int 1 0 X 17 R W 145 Integer expansion 1 ON OFF 2 NTC Out Probe 3 ratiometric cond Probe 5 Vdc 09 Min value voltage input F 0 H0 0 01 Vdc 1 50 P 18 R W 146 Integer 10 Max value voltage input F 09 500 0 01 Vdc 1 450 P 19 R W 147 Integer m Pressure min value F 0 2 ibar 1 0 P 1 R W 1 Analog 12 Pressure max value F m 99 9 bar 1 34 5 P 2 R W 2 Analog 3 Probe B1 calibration F 12 0_ 12 0 C F 0 1 0 0 3 R W 3 Analog 14 Probe B2 calibration F 12 0 12 0 _ Q F 0 1 0 0 4 R W 4 Analog 15 Probe B3 calibration F 12 0 12 0 C F 0 1 0 0 5 R W 5 Analog 6 Probe B4 calibration F 12 0 12 0 _ C bar F 0 1 0 0 6 R W 6 Analog 7 Probe B5 calibration F 12 0 12 0 C F 0 1 0 0 X 7 RW 7 Analog 18 Probe B6 calibration F 12 0 12 0 C F 0 1 0 0 X 8 R W 8 Analog 19 Probe B7 calibration F 12 0 12 0 Q F 0 1 0 0 X 9 R W 9 Analog 20 Probe B8 calibration F 12 0 12 0 _ C bar F 0 1 0 0 X 10 R W 10 Analog 21 Digital filter U 15 1 4 20 R W 148 Integer 22 nput limitation U 1 15 1 8 21 R W 149 Integer 23 Unit of
105. teger H09 Lock keypad 0 disabled 1 enabled Flag 16 R W Digital H10 Serial address 200 58 R W 186 Integer H11 Output modes see Table 5 3 and following pag 56 12 Flag 59 R W 187 Integer H12 Capacity control logic valve and inversion valve 0 Both normally closed 1 Both normally open 2 Inversion valve normally open and capacity control valve normally closed 3 Inversion valve normally closed and capacity control valve normally open Flag 60 R W 188 Integer H21 Second pump function 0 Disabled 1 Backup and weekly rotation 2 Backup and daily rotation 3 Condensing control on corresponding set point 4 Condensing control always on int 62 R W 269 Integer H22 Disable load default values 0 Function disabled 1 Function enabled Flag 8 Digital H23 Enable Modbus protocol Flag Digital uC 030220731 rel 1 4 26 10 2009 29 Table 4 g 4 3 8 Alarm setting parameters P display parameter and description default min max U O M variat def visibility supervis Modbus variabile indicat level variable type POI Flow switch alarm delay when starting the pump U 0 150 Js 1 20
106. temperature F14 0 function disabled F14 gt 0 fan on time in seconds The function is operational only in chiller mode if the probe on the condenser is a temperature sensor and only for air cooled units When the first compressor in the circuit in question starts it is assumed that the temperature of the environment is close to the temperature of the condenser if the value read by the condenser probe is higher than the value of F05 F07 as well as starting the compressor the fans in the circuit in question are forced on at maximum speed for the time set by F14 e Unit settings parameters H Unit model H01 Used to select the type of unit being controlled HO1 0 0 air air units HO1 1 AIR AIR heat pump HO1 2 AIR WATER Chiller HO1 3 AIR WATER heat pump HO1 4 WATER WATER Chiller HO1 5 water water heat pump with rev on gas HO1 6 water water heat pump with rev on water HO1 7 air cooled condensing unit HO1 8 air cooled condensing unit with reversal on gas circuit HO1 9 water cooled condensing unit HO1 10 water cooled unit condensing with reversal on gas circuit Note Set H21 4 Condenser pump always on if HO2 1 Two condensers Number of condenser fan circuits water condensers H02 This establishes the number of fan circuits present in the configurations with two circuits With one fan circuit HO2 0 the unit may have 1 or 2 refrigerant circuits e with one refrigeran
107. th automatic reset N C PO8 5 thermal overload circuit 1 with manual reset N C PO8 6 thermal overload circuit 1 with automatic reset N C PO8 7 thermal overload circuit 2 with manual reset N C PO8 8 thermal overload circuit 2 with automatic reset N C P08 9 cooling heating open Cooling closed Heating if HO6 1 PO8 10 cooling heating with delays d12 and d13 open Cooling closed Heating if HO6 1 PO8 11 alarm signal with manual reset N C PO8 12 alarm signal with automatic reset N C PO8 13 second set point from external contact cooling and heating normally open PO8 14 second cooling set point from external contact and heating from time band N O PO8 15 end defrost from external contact circuit 1 N C PO8 16 end defrost from external contact circuit 2 N C PO8 17 end defrost from external contact circuit 1 N C PO8 18 end defrost from external contact circuit 2 N C PO8 19 condenser step 1 N O PO8 20 condenser step 2 N O PO8 21 condenser step 3 N O PO8 22 condenser step 4 N O note 1 if P08 is set to 10 the change in state considers the times d12 and d13 and respects the compres sor protection times both from the digital input and the keypad note 2 if the digital input is used to switch the unit ON OFF or change the operating mode these functions are disabled on the keypad Select digital inputs 1D2 ID6 ID7 ID10
108. tion alarm with pC Table 7b The alarms are displayed in sequence and are separated from each other by pauses 7 3 EVD4 Electronic expansion valve driver This device is used to control electronic expansion valves The device is connected to the uC via a tLAN serial line The condensing pressure probe must be connected to the pC which then sends the reading to the driver Note for all other information on the connections refer to the EVD4 driver manual PHOENIX PHOENIX GMSTB 2 5 2 ST MC1 5 3 ST 3 81 GRSIGIBIBIEIBIS lt FCSER00000 MOLEX Mini Fit 538 39 01 2140 MOLEX Mini Fit 538 39 01 2060 u C 2 Fig 7 d 54 uC 030220731 rel 1 4 26 10 2009 7 4 Fan speed control board code MCHRTF The phase cutting boards code MCHRTF are used to control the speed of the condenser fans IMPORTANT The power supply to the uC G and GO and the MCHRTF board must be in phase If for example the power supply to the uC system is three phase make sure that the primary of the transformer supplying the uC board is connected to the same phase that is connected to terminals N and L on the speed control board therefore do not use 380 Vac 24 Vac transformers to supply the controller if the phase and neutral are used to directly power the speed control boards Connect the earth termina
109. tivation time EPERE ee ee E i i 1 deactivation time Deactivation time cooling Fig 5 b f 2 In the same way as for the activation time the deactivation time also varies between a maximum value n 4 set for the parameter r10 and corresponding to the set point temperature and a minimum set for the te parameter r11 corresponding to the end of the differential for the deactivation of the compressors set by to P a oe the parameter r12 E i i 1 I 1 te ee 2 POS a Below this value the deactivation time will be equal to the minimum set until reaching the temperature A1 A4 r01 r12 compressor A04 after which all the compressors will be switched OFF irrespective of the times As the temperature stop compressors deactivation differential moves away from the set point the response of the process becomes more dynamic Fig 5 b f A 1 1 1 ee eer a ewe Activation time heating Fig 5 b g activation time In heating mode the activation time will ecrease as the deviation from the set point increases The set 5 point is the heating set point r03 with the corresponding differential r04 The parameters for setting the io activation times are always r08 and r09 se 2 1 i 1 1 i 1 r09 p E o OES ace a 1 i 1 temperature i PPS r03 r07 4 r03 r07 r03 Fig 5 b g A SE Deactivation time heating aaa N deactivation time i al In heating mode if the temperature rises above the set point the deactivation time will decrease more
110. together when the hour counter is displayed resets the hour counter and conse quently cancels any maintenance requests in progress cl0 operating hours comp 1 cll operating hours comp 2 c12 operating hours comp 3 c13 operating hours comp 4 Compressor operating hour counter threshold c14 This sets the number of compressors operating hours expressed in hundreds of hours above which the maintenance request signal is sent cl4 0 function disabled Evaporator pump fan 1 hour counter c15 This indicates the number of operating hours for the evaporator pump or fan 1 expressed in hundreds of hours Pressing A and W together when the hour counter is displayed resets the hour counter and conse quently cancels any maintenance requests in progress Condenser or backup pump fan 2 hour counter c16 This indicates the number of operating hours for the condenser pump or backup or fan 2 expres sed in hundreds of hours Pressing A and W together when the hour counter is displayed resets the hour counter and conse quently cancels any maintenance requests in progress uC 030220731 rel 1 4 26 10 2009 35 00O ON OFF ON OFF Temperature based defrost d2 1 Minimum OFF time before the next pump start c17 The diagram below shows an example of the operation of the pump and with burst active w
111. ture end d03 Start defrosting temperature U 40 0 d04 C F 0 1 5 0 IDN 19 R W 119 Analog Condenser antifreeze alarm set point Start defrosting pressure m d0o4 bar 0 1 3 5 DP 18 R W 118 Analog d04 End defrosting temperature U d03 176 C 0 1 20 0 DN 21 RAW 21 Analog End defrosting pressure do3 2 bar 0 1 14 0 DP 20 R W 20 Analog d05 Min time to start a defrosting cycle U 10 150 s 1 10 D 37 R W 165 Integer d06 Min duration of a defrosting cycle U 0 150 s 1 0 D 38 R W 166 Integer d07 Max duration of a defrosting cycle U 1 150 min 1 5 D 39 R W _ 167 Integer dos Delay between 2 defrosting cycle requests within the same circuit U 10 150 min 1 30 D 40 R W 168 Integer d09 Defrosting delay between the 2 circuits U 0 150 min 1 10 D 41 R W 169 Integer d10 Defrost by external contact F 0 3 Flag 1 0 D 42 R W 170 Integer 0 disables function 1 external contact start 2 external contact end 3 external contact start and end dil Antifreeze heaters activated while defrosting U 0 1 Flag 0 D 9 RW 9 Digital 0 Non presenti Not present 1 Presenti Present d12 Waiting time before defrosting F 0 3 min 0 D 43 RW 171 Integer d13 Waiting time after defrosting F 0 3 min 0 D 44 RW 172 Integer d14 End defrosting with 2 refrigerating circuits F 0 2 Flag 0 D 45 R W 173 Integer 0 Indipendent 1 If both at end defrost 2 If at least one at end defrost d15 Start defro
112. verload O O fan condenser probe compressor 1 B3 4 B7 8 high pressure 1 and 2 compressor overload 1 and 2 low pressure 1 and 2 compressor 2 W OO W OD An AININ compressor 3 3 compressor 4 Fig 3 h b 3 9 Reverse cycle air cooled condensing unit 3 9 1 Single circuit Key condenser fan overload fan condenser probe compressor 1 high pressure compressor overload low pressure compressor 2 W OO W I D B W Nh reversing valve uC 030220731 rel 1 4 26 10 2009 21 Key condenser fan overload fan condenser probe compressor 1 high pressure 1 and 2 compressor overload 1 and 2 low pressure 1 and 2 compressor 2 W OO W B W compressor 3 compressor 4 5 reversing valve Key flow switch water cond temperature probe condenser compressor 1 high pressure compressor overload low pressure 00 W AINN compressor 2 22 3 9 2 Two circuits with one condenser fan circuit Fig 3 i b 3 10 Water cooled condensing unit without reverse cycle 3 10 1 Single circuit uC 030220731 rel 1 4 26 10 2009 3 10 2 Two circuits Key flow switch water cond temperature probe condenser compressor 1 high pressure compressor overload lw p
113. without observing the protection times or are inhibited from starting the alarm relay is activated the display flashes the corresponding message and the LED flashes It can be reset either manually or automatically see par P08 P09 P10 P11 P12 P13 tC1 Thermal overload circuit 1 As for tP but relating to circuit 1 tC2 Thermal overload circuit 2 As for tC but relating to circuit 2 LA generic warning This represents a generic warning that appears on the display from digital input without modifying the operation of the unit With the 1st circuit module only the alarm relay is activated while with the expansion card the warning relay can be used FL flow alarm This alarm is detected only if the pump is ON excluding the delays when starting P01 and in steady operation P02 irrespective of the status of the compressor All of the outputs are disabled pump compressor without observing the OFF times condenser fan and the buzzer sounds the alarm relay is activated and the display flashes The presence of the utility water pump must be enabled H50 It can be reset either manually or automatically see P08 P09 P10 P11 P12 P13 FLb Backup pump warning The warning activates the warning relay and displays the message FLb reset is manual This indicates the operation of the backup pump if present due to a probable fault on the main pump suggesting that maintenance is required If the flow alarm features auto
114. ximately every one second Low values for this parameter will limit the effect of impulsive disturbance Recommended value 8 default Unit of measure 23 Selects the unit of measure as degrees centigrade or Fahrenheit When the parameter is modified the pC automatically converts the values read by the NTC temperature probes B1 B2 B3 into the new unit of measure while all the other parameters set set point differential etc remain unchanged e Antifreeze auxiliary heater parameters A Antifreeze alarm set point low ambient temp for air air units A01 This represents the temperature antifreeze set point of the water at the evaporator outlet below which an antifreeze alarm is activated in this condition the compressors corresponding to the circuit in question are stopped while the pump remains on to decrease the possibility of freezing The alarm is reset manually or automatically depending on parameter P05 only when the water temperatu re returns within the operating limits that is above AO1 A20 In the Air Air units H1 0 1 the value represents the low room temperature warning threshold this alarm activated according to value read by probe B1 or B2 depending on parameter A06 is signal only and is reset depending on the value of P05 Example of antifreeze outlet limit management If probe B2 is placed in the outlet air flow air air units A01 becomes the outlet limit and if the outlet probe reading B2 lt outlet l
115. y counting the effective operating hours Settings r05 0 rotation disabled The customer can use compressors with different power ratings according to the desired logic or manage the capacity control functions The compressors are started stopped in proportional mode r05 1 rotation with FIFO logic first ON first OFF and vice versa first OFF first ON in this mode the operating hours are optimised together with the number of starts even if the compressor safety times are always respected r05 2 rotation with control of operating hours in this way the compressors will have the same operating hours as the compressor with the least operating hours is always started first again observing the safety times This does not however consider FIFO logic and does not optimise the starts and stops In the case of capacity controlled compressors 1 per circuit FIFO logic or timed operation will refer to the actual circuit and not the compressor valves If for example when capacity is required from circuit 1 compressor 1 starts first capacity controlled not at full capacity and then the valve is managed as a se cond step so that the compressor will work at maximum efficiency If less capacity is required the second step will be deactivated first and then the compressor There is no rotation between the compressor and the valve If extra capacity is required the second circuit will start with compressor 2 and then if required the valve is o
116. ye CAREL electronic controller gi j assise aiii WEEE ie vines il _ Ene User manual ERE om NO POWER my esana CABLES y oceTHER READ CAREFULLY IN THE TEXT Technology amp Evolution J IMPORTANT WARNINGS CAREL bases the development of its products on several years experience in the HVAC field on continuous investment in technological innovation of the product on rigorous quality procedures and processes with in circuit and function tests on 100 of its production on the most innovative production technologies available on the market CAREL and its branch offices affiliates do not guarantee in any case that all the aspects of the product and the software included in the product will respond to the demands of the final application even if the product is built according to state of the art techniques The client builder developer or installer of the final equipment assumes every responsibility and risk relating to the configuration of the product in order to reach the expected results in relation to the specific final in stallation and or equipment CAREL in this case through specific agreements can intervene as consultant for the positive result of the final start up machine application but in no case can it be held responsible for the positive working of the final equipment apparatus The CAREL product is a state of the art product whose operation is specified in the technical

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