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Carel pCO Series, Application Program, Page: 35 / 36

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Carel pCO Series Application Program Download Page 35

Carel srl: pCO Stage Controller

page 34

Chiller unit consisting of:

• 

5 Compressors

• 

2 NTC temperature probes

• 

1 Stage of voltage control for comp.

• 

1 External air temperature probe

• 

remote On/Off from analog input

    (compensation)

ID11R

ID11

ID12R

ID12

J21

G

G0

J17

NO11

C11

NO10

C10

J22

NO9

C9

NO12

C12

NO5

C5

J6

NO4

C4

NO3

C3

NO2

C2

NO1

C1

J5

ID1

ID2

ID3

ID4

J4

ID5

IDCM1

B1

AVSS

B2

B3

J2

AVSS

B4

B5

AVSS

B6

BCP1

24V~

BCP2

220V~

FLX

AF

24V~

CMP2

CMP1

AL

F

N

F

N

K

K

P1C2

P1C1

ON/OFF

TAP

TPP2

TPP1

POWER SUPPLY

ANALOG INPUTS

DIGITAL OUTPUTS 

DIGITAL INPUTS

CMP3

K

P1C3

NO8

C8

NC7

C7

J24

NO6

C6

CMP4

K

P1C4

CMP5

K

P1C5

ID6

ID7

ID8

ID9

J3

ID10

IDCM2

BCP3

BCP4

BCP5

INPUTS

OUTPUTS

AF

antifreeze lock

AL

general alarm

BCP

compressor lock device

CINV

compressor 1/valve inverter

FLX

flow switch

CMP

compressor

ON/OF
F

On/Off remote input

P1C

first stage of voltage control

TAP

ambient air temperature probe

TPP

temperature passive probe (IN/OUT)

F

phase

N

neuter

Note: Fans must be electromechanically controlled by means of a contact of the contactor of its compressor, or they
must be controlled through an external pressure switch (e.g. RFG or another pressure switch).

Summary of Contents for pCO Series

Page 1: ...Application program for pCO pCO Stage Controller Manual version 3 1 09 11 99 Program code EPSTDEIU0A Rif 96EM...

Page 2: ...9 DESCRIPTION OF PARAMETERS 10 CONNECTIONS 19 HARDWARE ARCHITECTURE 19 MAIN BOARD LAYOUT 20 MEANING OF THE INPUTS AND OUTPUTS 22 CONNECTION OF THE INPUTS 24 CONNECTION OF THE OUTPUTS 25 POWER SUPPLY...

Page 3: ...5 standard and the Carel s communication system USER INTERFACE Terminal unit front panel view with front door closed Figure 1 references 1 External function indicator LEDS 2 External rubber buttons 3...

Page 4: ...obes gives access to the group of parameters for the operation of the printer control as required displays the status of inputs and outputs both digital and analog allows the display programming of th...

Page 5: ...ff LED no device managed by the probe 1 is active 2 On LED at least one device managed by the probe 2 is active Off LED no LED managed by the probe 2 is active 3 On LED night setpoint is active sepoin...

Page 6: ...abled 0 0 disable 1 enable r5 reset of the device 5 operating hour no only if device 5 is enabled 0 0 disable 1 enable r6 reset of the device 6 operating hour no only if device 6 is enabled 0 0 disabl...

Page 7: ...on i10 state of the device 10 lock alarm 0 off 1 on i11 state of the device 11 or fan inverter lock alarm 0 off 1 on i12 state of the low pressure flow regulator alarm 0 off 1 on Ao1 display of the s...

Page 8: ...P1 0 5 0 99 99 9 C F bar St5 selection of probe 2 minimum setpoint only if P24 0 10 0 99 99 9 C F bar St6 selection of probe 2 maximum setpoint only if P24 0 24 0 99 99 9 C F bar St7 secondary setpoi...

Page 9: ...1 devices only if P1 0 and P4 0 and P14 0 10 0 999 sec P19 rotation enabling of the probe 1 devices only if P1 0 and P4 1 1 0 disable 1 enable P20 inverter enabling of the device no 1 valve see expla...

Page 10: ...d and hour number AL 12 Exceed hour threshold of the device 1 valve inverter Only signalling Threshold and hour number AL 13 Not operating Eeprom Only signalling Reset manufacture values and turn the...

Page 11: ...On The flashing LED of the menu indicates that the manual procedure is active If after pressing the menu button the enter button is kept pressed for more than 2 seconds all the manual procedure is de...

Page 12: ...ndicated by St6 St7 secondary setpoint Allows to select the secondary setpoint that is valid when the time bands are enabled d1 d2 device differentials These parameters establish the values of the dif...

Page 13: ...ed it is not possible to connect any device to the secondary circuit except the fan inverter P5 number of devices operating with probe 1 out of order When occurring the alarm of broken or not connecte...

Page 14: ...s In lateral band the devices are positioned proportionally within the controlled zone Example with 3 devices on a single circuit value measured setpoint differential dev 1 dev 2 dev 3 3 devices in th...

Page 15: ...the reading of the probe 1 exceeds the value of the neutral zone setpoint St1 the display of the device 1 inverter Sr2 The decrease takes place when the probe 1 reading is below the value of the neutr...

Page 16: ...controlled by the probe 2 P35 enabling of fan inverter The fan inverter can be enabled by this parameter Enabling the control of fan inverter involves the selection of a setpoint inverter SI2 and a d...

Page 17: ...nitial procedure Devices are locked out until the user cancels alarm messages from memory This is achieved by pressing key alarm while alarm codes are visualized in the display If the reasons of the a...

Page 18: ...lts The remaining devices can be switched on according to the value measured by the probe 1 If AL15 is present all the devices connected to the circuit 2 are forced to switch on and the fan inverter i...

Page 19: ...displayed and only the LEDs needed for the functioning are switched on During this procedure it is possible to verify if all the LEDs are working Selection of the negative parameters Many parameters t...

Page 20: ...with keypad display and LEDs The connection of the user terminal unit to the main board is not necessary for the controller operation it can be used for the initial programming of the main parameters...

Page 21: ...core of the controller and includes 4 different areas microprocessor and memories of the unit terminal blocks necessary to interface the pCO to the controlled devices connectors necessary to interfac...

Page 22: ...d 9 Digital outputs commutable power 2300VA 10A 230V NO n Normally open contact output n NC n Normally closed contact output n Common contact output n 10 Digital inputs 24V 10mA ID n Digital inputs 1...

Page 23: ...probe 4 20 mA check pin strip J15 Digital inputs CONNECTOR SIGNAL DESCRIPTION J4 1 ID1 Device 1 lock Pressure switch of high pressure antifreeze J4 2 ID2 Device 2 lock Pressure switch of high pressure...

Page 24: ...C7 Common device 7 J24 6 Not connected J24 7 NO6 Device 6 contact normally open J24 8 C6 Common device open J24 9 Not connected J24 10 NO13 Not connected J24 11 C13 Not connected J6 1 NO12 Device 11...

Page 25: ...ve voltage probes 0 1V or current probes 4 20 mA selectable by jumper Types of probes that can be connected to the analog inputs Output active temperature probes 3 wire probes Temperature NTC Carel pr...

Page 26: ...nnected directly to the terminals used to supply pCO interface card see Fig 30 The card is suitable to be installed in electric panels by fastner and screw but its particular mechanical dimension allo...

Page 27: ...ket To be sure check that the glazed side of the EPROM coincide with the glazed side of the socket or with the reference notch serigraphed on the board Connect the EPROM to the corresponding main boar...

Page 28: ...printer through a 9 25 pole serial cable for printer 9 poles on the pCO side 25 poles on the printer side The printer must be with communication serial port RS232 The printer must be programmed with t...

Page 29: ...l inputs as fare as possible from power cables and inductive loads in order to avoid possible electromagnetic noises Do not put into the same cable ducts the ones of the electric cables included power...

Page 30: ...voltage is 0V or 0V see above the contact is open If not differently stated the controller gives alarm whenever the contacts are open Wrong reading of the input signals Check a the probe connection se...

Page 31: ...ounting the main card to the electrical panel Failure of the serial connection to the local supervisor Check a the presence and proper connection of the serial board code PCOSER0000 b correct setting...

Page 32: ...ce 4 l ock Devi ce 9 l ock Devi ce 5 l ock Devi ce 10 l ock NT C C ar el1 pr obe opt NT C C ar el2 pr obe opt Sel ect i on set poi ntbypot ent i om et er or ext er nalai rt em per at ur e opt i onal s...

Page 33: ...4 ID5 IDCM1 ID6 ID7 ID8 ID9 J3 ID10 IDCM2 B1 AVSS B2 B3 J2 AVSS B4 B5 AVSS B6 J1 24V BCP1 24V BCP2 BCP3 BCP4 BCP5 BF5 BF4 BF3 BF2 BF1 220V LP HP FAN1 CMP5 CMP4 CMP3 CMP2 CMP1 F N K K K K K K PP1 PP2 P...

Page 34: ...S B4 B5 AVSS B6 J1 24V BCP1 24V BCP2 BCP3 BFINV 220V LP HP 24V CMP3 CMP2 CMP1 F N K K K FINV PP1 PP2 POWER SUPPLY ANALOG INPUTS DIGITAL OUTPUTS DIGITAL INPUTS NO11 C11 NO10 C10 J22 NO9 C9 AL F N AND A...

Page 35: ...P TPP2 TPP1 POWER SUPPLY ANALOG INPUTS DIGITAL OUTPUTS DIGITAL INPUTS CMP3 K P1C3 NO8 C8 NC7 C7 J24 NO6 C6 CMP4 K P1C4 CMP5 K P1C5 ID6 ID7 ID8 ID9 J3 ID10 IDCM2 BCP3 BCP4 BCP5 INPUTS OUTPUTS AF antifr...

Page 36: ...neral alarm BCP compressor lock device CINV compressor 1 valve inverter FLX flow switch CMP compressor PST potentiometer for setpoint regulation P1C first stage of voltage control TAP temperature acti...

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