Introduction; Programmability - Carel pCO5+ User Manual

The pCO5+ is a microprocessor-based, programmable electronic
controller that is fully compatible (hardware and software) with the pCO
Sistema family of devices, which includes programmable controllers, user
terminals, gateways, communication devices and remote management
devices. These devices represent a powerful control system that can
be easily interfaced with most Building Management Systems (BMS)
available on the market.
The pCO5+ controller has been developed by CAREL to provide solutions
to a host of applications in air-conditioning, refrigeration and HVAC/R in
general. It is highly fl exible and can be used to make special products on
customer specifi cations.
In a pLAN network (pCO Local Area Network) the pCO5+ can be connected
to input/output expansion cards (e.g. pCOe), to other pCO5+ controllers,
to all the controllers of the pCO Sistema family and to the terminals of the
pGD range. Up to 32 devices (controllers and terminals) can be connected
together, allowing highly effi cient sharing of information. Each device in
the pLAN network can exchange digital or analogue data with all the
others, depending on the application program used.
Compared to pCO3 controllers, pCO5+ units are equipped with two extra
built-in RS485 serial ports – one for the Fieldbus and one for supervision/
telemaintenance purposes (BMS).
Each Fieldbus serial port, whether built into the controller or installed via
an optional card, can be connected to controlled fi eld devices such as
valve and damper actuators and external drivers (e.g. drivers for electronic
expansion valves, EVD Evolution).
Each BMS serial port, whether built into the controller or installed via
an optional card, can be connected to fi eld-level, automation-level
or management-level standard bus systems, such as Konnex®, LON®,
BACnet™, etc.
The Medium range includes controller versions with one or two built-in
drivers for electronic expansion valves. The Ultracap module (accessory)
can be used as an emergency power supply for valve drivers, and allows
shutting the valves completely in case of power failures (alternating
current).
Main features
•
the same controller can be connected to up to 3 PGD terminals;
•
the program and parameters are saved permanently in a non-volatile
memory (fl ash memory), preventing data loss in case of power failures
(without requiring a backup battery);
•
32-bit microprocessor controllers with 5 or 9 MB storage capacity
ensure high performance in terms of speed and memory space;
•
allows connecting up to 32 devices to pLAN networks consisting
of a series of pCO5+ controllers and terminals. Each controller can
exchange data with the other controllers at high speed without
requiring additional hardware;
•
external or built-in terminal with display and LED-button keypad; can
be used for uploading software and commissioning;
•
fast upload/download of controller software using a "Smart Key(*)" or
any pendrive (provided the controller is equipped with the relative
port);
•
universal inputs/outputs confi gurable via an application program for
connecting active and passive probes, digital inputs, analogue and
PWM outputs. This extends the possibilities of confi guring inputs/
outputs without having to install a larger controller;
•
allows using the 1Tool software (installable on a personal computer)
for creating and customising application programs, performing
simulations, supervising operations and setting up pLAN networks;
•
allows uploading application software to the controller using the pCO
Manager program, available free of charge at http://ksa.carel.com;
•
many dedicated programs available for controlling a variety of HVAC/R
applications;
•
allows developing new application programs according to customer
specifi cations;

1. INTRODUCTION

•
wide range of models distinguished by:
- microprocessor storage capacity: 5 or 9 MB;
- size (Small, Medium, Large, Extralarge), for maximum fl exibility
depending on the application;
- solid state relay (SSR) digital outputs (24/230 V);
- NO or NC relay outputs;
- USB ports;
- optically-isolated/non-optically-isolated built-in serial ports;
- built-in display.
•
various kinds of connectors (spring, screw, etc.).
(*) function available from Smart Key fi rmware version 4.0.
Main features of terminal
Thanks to the capabilities of the application software, while the unit is
normally working the user terminal can be used to:
•
edit the main parameters;
•
receive acoustic alerts (from buzzer) and visual alerts (on display) of any
alarms triggered;
•
view active functions and measured quantities displayed by LED
indicators.
1.1
The programmable controllers of the pCO family can be programmed
using the 1Tool development software, which off ers the following
advantages:
•
transferability of software. Applications developed for the pCO can be
quickly and easily transferred between diff erent hardware platforms by
simply modifying the inputs and outputs;
•
rapid development of custom programs at competitive costs;
•
reliability guaranteed by the use of standard routines, tested in the lab
and in the fi eld.
In addition, using 1Tool provides customers with maximum confi dentiality
and ample self-management when developing new programs on their
own. Using the same hardware for diff erent applications enhances
standardization, with the clear advantage of being able to perform in-
circuit, functional and burn-in tests on all products, thereby ensuring a
high level of reliability in general and in terms of individual electronic
components.
Applications
When provided with a dedicated application program, the same
controller can be used to control equipment of diff erent kinds:
•
chillers and heat pumps;
•
roof-top units;
•
air-conditioners;
•
small/medium-sized air handling units (on request);
•
refrigerated counters (on request and to specifi cations);
•
cold rooms (on request and to specifi cations);
•
curing rooms;
•
compressor racks;
•
universal stage controllers.
7

Programmability

pCO5plus +0300020EN rel. 1.2 - 07.11.2013
ENG