Rev.01 03-27-17
Page 8 of 67
Compu-Aire
1.0
INTRODUCTION
The System 2500S is a programmable controller based on a double microprocessor, designed for
precise "Smart" control of an air conditioning system. The System 2500S is made up of a
microprocessor based MAIN BOARD equipped with a set of terminals used to interface the
microcontroller board to the controlled devices; such compressors, fans, heaters, humidifiers,
and valves. The program is retained in a flash based memory and configuration parameters are
permanently stored (even in the case of a power failure) in a non-volatile memory.
The System 2500S also includes a microprocessor based TERMINAL unit complete with graphical
touch screen display with built in navigation keypad and led indicators allowing the users to
easily set the controlled parameters for set points, dead bands, alarm thresholds, and carry out
the main working operations (on/off, displaying controlled variables, printouts). The controller
and graphical display terminal are powered by 24VAC power supply using low voltage control
transformers from the unit. Connection between the terminal unit and main board is necessary
only when programming the System 2500S basic parameters. The controller is linked to a
graphic display terminal via standard three wire cable.
The System 2500S represents the evolution of the microcontroller towards the unpresented
networking capabilities with integrated Ethernet interfaces offer a wide range of open stand
protocols for local connectives. The new operating system is optimized to ensure optimal
system resource usage and increase speed and reliability.
