1. Uniflair
pCO1 Small / Medium

2. Index Introduction …………………………….........................page 03
Technical features …………….………………………..page 07
Application software ..…………………………………page 09
One possible set of hardware ..………………………page 10
pCO1 Small and Medium ……………………………..page11
Basic layout of the pCO1 medium …….……………page 13
Connecting the analogue inputs ……………………page 16
EVD 400 ……………..…………………………………….page 21
Supervisory systems ……..……………………………...page 22
Optional features ...……………………………………page 26
Accessories kit ………………………………………….page 31

3. Introduction

4. Introduction: positioning in the electrical panel

5. Introduction
The pCO1 series has been designed for the purpose of providing the significant innovations introduced by the pCO system to all those applications that require greater competitiveness in terms of price.
All the pCO1 series controllers feature a 16-bit microprocessor, and 2 MB flash memory (multi-language, multi-protocol).

6. Introduction
The pCO1 controllers are available in two different sizes, according to the I/O and power requirements: pCO1 Small, pCO1 Medium.
Some models feature an SSR to control the devices that require frequent starts and stops.

7. Technical Features
14 MHz, 16 bit microprocessor, 16bit internal register and operations,
512 byte internal RAM;
Up to 2 Mbyte FLASH MEMORY for the program;
1 RS485 serial connector for pLAN;
• Ready for connection to RS485supervisory network;
• DIN plastic case for DIN rail installation;
• 24Vac/Vdc power supply;
• Telephone connector for pCO terminals;
• Power on LED.

8. Technical Features
The pCO1 controller is fitted with a 16bit microprocessor to run
the control program, and of a set of terminals required for the connection to the controlled devices (for example: valves, compressors, fans).
The program and the parameters are saved permanently in the FLASH memory, preventing data loss in the event of power failure (without requiring a backup battery).
The pCO1 controller also allows connection to a local pLAN network made
of a series of pCO1 boards and terminals.
Up to 10 units can be connected in the same pLAN net

9. Application Software
The power of the application software means that the user terminal allows:
• the initial programming of the unit, with password-protected access to
guarantee security;
• the possibility to modify, at any time, the fundamental operating parameters,
optionally protected by password;
• the display and audible signalling (by buzzer) of any alarms;
• the display of the active functions, using the LEDs;
• the display of all the values measured;

10. One possible set of hardware
User terminal with keypad, display and
signal LEDs;
pCO1 (SMALL version);
pCO1 (MEDIUM version);
connection cable between the terminal and pCO1;
connection cable between the terminal and serial printer (supplied by the customer);
AWG20/22 cable for pLAN connection between a series of pCO1 boards;
Connection terminal kit;
Connection to supervisor systems.

11. pCO1 Small and Medium PCO1 SMALL
• 8 optically-isolated digital inputs, 24Vac 50/60Hz or 24Vdc;
• 8 digital relay outputs (1 of which with changeover contact and
2 optional SSR);
• 4 analogue inputs, configurable as NTC, 0/1V, 0/5V, 0/20mA, 4/20mA.
• 2 analogue inputs, configurable as NTC and ON-OFF
• 2 x 0/10Vdc analogue outputs.
• 2 PWM outputs for phase-cutting speed controllers.

12. pCO1 Small and Medium PCO1 MEDIUM
• 12 optically-isolated digital inputs, 24Vac 50/60 Hz or 24Vdc;
• 2 optically-isolated digital inputs, 24Vac/Vdc or 230Vac (50/60Hz);
• 13 digital relay outputs (3 of which with changeover contact and
4 optional SSR);
• 4 analogue inputs, configurable as NTC, 0/1V, 0/5V, 0/20mA, 4/20mA.
• 2 analogue inputs, configurable as NTC and ON-OFF
• 2 NTC analogue inputs
• 2 x 0/10Vdc analogue outputs.
• 2 PWM outputs for phase-cutting speed controllers.

13. Basic layout of the pCO1 medium

14. Basic layout of the pCO1 medium
01. Power supply connector [G (+), G0 (-)]
Vac, 2A fuse, slow-blow (T2 A)
03. Universal analogue inputs, NTC, 0/1V, 0/5 V, 0/20mA,
4/20mA
04. Passive analogue inputs, NTC and ON/OFF
05. Passive analogue inputs, NTC
06. Yellow power LED and 3 signal LEDs
07. 0/10V analogue outputs and PWM phase-cutting
outputs
08. Digital inputs, 24Vac/Vdc
09. Digital inputs, 230Vac or 24Vac/Vdc
10. Connector with Vref for power to 5V ratiometric
probes, and Vterm for power to ARIA terminal
11. connector for all the standard pCO* series
terminals and for downloading the application
software
12. pLAN local network connector
13. connector for the programming key
14. digital relay outputs
15. door for selecting the type of analogue inputs
16. door for inserting the serial card:
RS485 for supervisor
RS232 for modem interface
Gateway (protocol converter)
17. door for inserting the clock card

15. Basic layout of the pCO1 medium
Regarding the meaning of each connector and of the correspondance between inputs – outputs, in the manual you’ll find a precise table with all the descriptions.
The following table gives examples of the distribution of the inputs and
outputs in relation to the 2 versions

16. Connecting the analogue inputs
The analogue inputs can be configured for the more common sensors on the market: NTC, 0/1V, 0/10V, 0/20mA, 4/20mA.
The different types of sensors can be selected using the corresponding dipswitches, as in the following figure.

17. Connecting the analogue inputs
This is a picture taken directly from the electrical diagram inserted between the documentation at the moment of the unit delivery.
In the last pages, before the components list, there is the specific dipswitches configuration.

18. Connecting the analogue inputs
In this way you can:
Connect active temperature and humidity probes
Connect universal NTC temperature probes
Connect 4/20mA pressure probes
Connect 0/5V ratiometric pressure probes
Connect the analogue inputs selected as ON/OFF
Connect the digital inputs
Connect 24Vac digital inputs
The pCO1 features up to 14 digital inputs for connecting safety devices, alarms, device status, remote switches. These inputs can work at 24Vac, 24Vdc and some at 230Vac.

19. Connecting the analogue inputs
8. Connect the 230 Vac digital inputs
The following figure represents one of the more
common Connection diagrams for the 230Vac
digital inputs.
Within each group, the digital inputs are not
independent: for example, with reference to Figure,
the inputs ID13 and ID14, due to the common
terminal, must be powered at the same voltage
to avoid dangerous short-circuits and/or
the powering of lower-voltage circuits at 230Vac.
9. Connect the 0/10Vdc (optoisolated) analogue outputs
The zero volt must be the reference

20. Connecting the analogue inputs
10. Connect the PWM analogue outputs (for phase cutting speed controllers)
11. Connect the digital outputs (up to 13 with electromechanical relays)

21. Evd 400
The EVD 400 driver for EEV with two pole stepper motors , is a controller that manages the electronic expansion valve.This function is achieved by optimising the opening of the valve using a PID algorithm and special control routines.
The module is fitted with an Rs485/Tlan interface for connection to a Pco1via Tlan protocol

22. Supervisory systems Optional card used to interface with
a HAYES standard modem.
The maximun baudrate is baud
Optional card for interfacing with an RS485 network.
The maximun baudrate is baud

23. Supervisory systems
The cards are used to interface the pCO1 to a LonWorks network. They differ by the type of interface on the LonWorks network side:
Interface to FFt-10A 78kbs (TPFT-10)
The baudrate must be set to 4800
Interface to RS kbs (TP485-39).
The baudrate must be set to 4800

24. Supervisory systems pCO Web Ethernet™ interface board
Used to interface the pCO controllers with the
BACnet™ and SNTP protocols,
emerging standards in the HVAC industry
pCOWeb is an accessory for the pCO* series products (excluding the pCOB*
series) fitted with a serial port and communication via the data protocol.
pCOWeb acts a “gateway”, that is, a translator between the “Uniflair
supervisor” data protocol and the Ethernet network protocols commonly used
to connect the computers in a building.

25. Supervisory systems
Provides communication with the TREND interface, a commonly-used building
management system in english-speaking countries.

26. Optional Features
Option that allows the management of the time and date,
it and includes buffer RAM for data relating to the
software application.
Optional module for expanded the pCO1 memory
(event log or Black-box features), and for the management
of the time and date

27. Optional Features
The cards can be used to transfer (upload ad dowload)
the aplication software. The key has 2MB flash memory.
Carel supply the key with BOOT and BIOS that manage 1MB,
in this way the same key can be used with pCO1 contollers that have either
1MB or 2MB flash memory chips.

28. Optional Features
This interface is used to control the main parameters of the
Carel OEM humidifiers (water level and conductivity in the cylinder,
TAM current power sensor) directly from the pCO sistema controllers.
The values read by the special sensors are converted into signals that are
compatible with the inputs on the control board. The board is managed
by the software application running in the pCO controller.

29. Optional Features
The expansion boards belong to the pCO sistema family and have been
designed to increase the I/Os on the pCO3, pCOXS, pCO1, pCO2 controllers.
A maximum of 5 expansion boards for each pCO3, pCOXS, pCO1,
pCO2 controller can be connected.

30. Optional Features Possibility to control the same motherboard
pCO1 with maximum 3 remote user terminal.
The material needed to connect them is
the flat cable and the T-Derivator.
For further information read the UG40 slides.

31. Accessories / Kit Remote user terminal Serial card tLAN, MP-Bus
Clock card
Serial card RS485
Flooding detector standard
Flooding detector+ flooding sencor additional
Flooding detector + flooding sensor sensible wide
External limit temperature sensor
External limit humidity sensor
Fire sensor
Smoke sensor
Fire/Smoke sensor
24Vac relay for fire/smoke alarm centralized