Carel pCO3 Technical Leaflet

3
+050003299 - 1.6 03.08.2011
CHARACTERISTICS
pCO
3
is a microprocessor-based electronic controller compatible in both hardware and software terms with the pCO
2
family. Developed by
CAREL in 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
2
prom, ensuring they are stored even in the event of power failures (without
requiring a backup battery).
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
3
controllers, to all the other controllers 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 eff ectively. 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
3
.
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
3
controller. The power
supply to the μ pCO
3
controller and terminal (or pCO
3
controllers and terminals) should be separated from the power supply to the other
electrical devices (contactors and 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
3
. If powering more
than one pCO
3
board connected in the pLAN network, make sure that 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
3
.
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 PCO10000F0
LonWorks FTT10
standard chiller profi le
PCO10001F0
Connectors
Example of coding: PCO3CON***, see the following table for the description:
PCO3CON * * 0
0= screw
1= spring
S= small
M= medium
L= large
Z= extra large N.O.
C= extra large N.C.

Carel pCO3 Specifications

General

Brand	Carel
Model	pCO3
Category	Controller
Language	English