pCO5+ and c.pCO series programmable controllers have:
- multiple serials to communicate simultaneously with field instruments and BMS systems,
- different modular sizes from 4 to 18 DIN modules,
- a vast library of application software for the world of cold and comfort,
- high-performance software development tools 1Tool and c.suite,
- external touch screen pGDX interfaces.
These controllers can be easily interfaced with the most common supervision systems on the market using a wide range of protocols, including:
- Modbus – one of the most famous serial communication protocols for connecting industrial electronic devices (website: modbus.org),
- BACnet®– communication protocol, for HVAC and other devices, for building automation systems (website: bacnet.org),
- LonWorks®– tecnology for building distribuited automation systems, using the LonTalk® protocol (website: lonmark.org).
pCO5+ controllers
pCO5+ controllers: faster, more powerful, more reliable.

Flexibility
Up to 10 universal channels individually configurable as input or output:
- NTC probe, PTC, PT100, PT500, PT1000,0/1V, 0/5V, 0/10V, 0/20mA, or 4/20mA,
- clean digital input (standard and fast),
- analogue output (0/10V and PWM).
Connectivity
Up to 7 communication ports available with the most common protocols in HVAC/R applications for complete system management (pLAN, BMS1, BMS2, Fieldbus1, Fieldbus2, USB host, USB device).
Energy Saving
Up to 2 integrated EVD EVO drivers for the management of two independent EXV electronic expansion valves, ensuring reduced wiring and space. Moreover, it is possible to install the Ultracap module, which guarantees the closing of the valve in the event of a power failure, eliminating the solenoid valve that was previously necessary to guarantee the circuit closing.
Cloud based
Ability to perform remote actions (with the pCOWeb webserver), such as reading and writing of the variables of the unit, updating of the application software on board, browsing HTML customized pages, sending emails.
Retrocompatibility
pCO5+ controllers are compatible with previous generations of the pCO family (pCO5 and pCO3). This is possible thanks to a BIOS is capable of emulating the functions of past generations controllers, thus allowing manufacturers to replace old pCO3/pCO5 with newer pCO5+, without software changes.
Boards range
| Picture | Description |
|---|---|
![]() | pCO compact 6 DIN modules 19 I/Os available |
![]() | pCO5+ small 13 DIN modules 24 I/Os available |
![]() | pCO5+ medium 18 DIN modules 40 I/Os available |
![]() | pCO5+ medium EVD EVO 18 DIN modules 44 I/Os available |
![]() | pCO5+ large 18 DIN modules 48 I/Os available |
![]() | pCO5+ extralarge 18 DIN modules 58 I/Os available |
Note: depending on the product code ordered, the pCO controllers may have a built-in terminal or be without one: for more information contact us.
Accessories
| Picture | Description |
|---|---|
![]() | pCOe Expansion Board To increase the number of I/Os on the pCO while keeping costs and dimensions under control. |
![]() | Electronic Expansion Valve Driver To control CAREL or third party EXV valves. |
![]() | Ultracap (stand-alone and plug-in) To guarantee the closing of the electronic valve in the event of a black-out. |
Serial cards
Multiple serial cards are available for interfacing the pCO with the most common communication standards, such as Modbus, BACnet®, LonWorks®, KNX and so on.
c.pCO controllers
c.pCO controllers: new functions to improve the efficiency of HVAC/R systems.

New Operating System
The new Multitasking Operating System ensures optimal use of system resources, extends the types of data that can be used in the development of the application (32-bit floating point numbers), increases the speed of execution of the application and allows a independent management of communication protocols.
Connectivity
c.pCO features two integrated Ethernet interfaces, three serial interfaces, two optional communication cards and two USB ports. A wide range of communication protocols is available (CAREL, Modbus, BACnet®, LonWorks®, KNX and so on).
Cloud Services
“Plug & Play” solution to connect to the tERA cloud platform. All tERA services are available via a simple Ethernet connection to your residential or business network, without using any additional gateway devices.
Energy Saving
The c.pCO Medium model integrates two EVDEVO drivers for the control of the expansion valve with an optional Ultracap module, for an integrated management of energy saving.
Flexibility
c.pCO includes up to 10 universal I/O channels, ensuring maximum flexibility in the configuration of the inputs/outputs. Thanks to the Carel proprietary ASIC chip, the universal I/O channels can be configured independently as Analogue Inputs, Digital Inputs or Analog Outputs.
Retrocompatibility Hardware
c.pCO is pin-to-pin compatible with pCO5+, pCO5 and pCO3 controls.
Discover more
Brochures
- pCO5+: Programmable controller for HVAC/R applications (carel.com)
- c.pCO sistema, connected efficiency (carel.com)
Manuals and technical sheets
- pCO5+ & pCO5+ HS family:
- controller manual – technical sheet (carel.com)
- c.pCO family:
- controller manual – c.pCO technical sheet – c.pCO mini technical sheet (carel.com)










