Carel pCO3 Mode D'emploi page 11

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CHARACTERISTICS
pCO
3
is a microprocessor-based electronic controller compatible in both hardware and software terms with the pCO
compliance with the European RoHS directives, it provides a solution for many applications in the air-conditioning and refrigeration sectors. It ensures
absolute versatility, allowing specifi c products to be created to customer request.
pCO
3
runs the control program, and is fi tted with the set of terminals required for connection to the devices (compressors, fans...). The program and the
parameters are saved to FLASH-MEMORY and E
The program can be loaded using a PC (28.8 kbps and 115.2 kbps) or the special programming key.
pCO
3
also allows connection to the pLAN (pCO Local Area Network) and can be connected, as well as to other pCO
in the pCO sistema and all the pGD family terminals. All the controllers in the pLAN can exchange information (variables, digital or analogue, depending
on the application software used) at high transmission speed. Up to 32 units can be connected, including pCO controllers and terminals, so as to share the
information effectively.
The connection to the supervisor/telemaintenance serial line, via the CAREL or Modbus™ communication protocol over the RS485 standard, is performed
by inserting an optional serial board in the pCO
Other optional cards can be used to connect to a supervisor via standards other than RS485. Finally, the serial fi eld bus interface, using the optional board,
ensures connection to the fi eld devices controlled (for example: valves, pCOe I/O expansions, electronic valve drivers...).
Versions available:
• SMALL, MEDIUM, LARGE, EXTRALARGE N.O. and EXTRALARGE N.C.;
• with or without Built-In terminal;
• with additional fl ash memory and optically-isolated pLAN;
• with or without solid state relay (SSR) digital outputs.
Note:
the application software can be downloaded to the fl ash memory using the smart key PCOS00AKY0, see Fig. 6; or a PC using the USB-485 adapter
"CVSTDUTLF0" and the "WINLOAD32" program, to be ordered from CAREL.
Power supply
A Class II safety transformer with a minimum rating of 50 VA must be used in the installation to supply just one pCO
pCO
3
controller and terminal (or pCO
other electromechanical components) inside the electrical panel. If the secondary of the transformer is earthed, make sure that the earth wire is connected to
terminal G0. This is true for all the devices connected to the pCO
the references G and G0 are observed (the reference G0 must be maintained for all the boards). If using the pLAN network and for further explanations and
information, please refer to the CAREL manual pCO
Field Bus options
optically isolated 485
PCO100FD10
tLAN
PCO100TLN0
Belimo MPbus
PCO100MPB0
modem
PCOS00FD20
CAN hydronic
PCOS00HBF0
BMS options
CANbus
PCOS00HBB0
485/Modbus
PCOS004850
modem
PCO100MDM0
Ethernet board
PCO1000WB0
LonWorks
LonWorks
FTT10
LonWorks
FTT10
standard chiller profi le
Connectors
Example of coding:
PCO3CON***
PCO3CON *
*
0
S
= screw
1
M
= spring
L
Z
C
+050003290 - 1.6 - 03.08.2011
2
prom, ensuring they are stored even in the event of power failures (without requiring a backup battery).
3
.
3
controllers and terminals) should be separated from the power supply to the other electrical devices (contactors and
3
. If powering more than one pCO
3
.
PCO10000F0
PCO10001F0
, see the following table for the description:
0
= small
= medium
= large
= extra large N.O.
= extra large N.C.
3
board connected in the pLAN network, make sure that
11
ENG
2
family. Developed by CAREL in
3
controllers, to all the other controllers
3
controller. The power supply to the µ

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