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2
SYSTEM HARDWARE
This chapter describes the constituting parts of the system, its accessories, if any, their connection and their
functions.
This chapter provides basic information on the controller software. For additional
information, refer to the documentation supplied by the controller Manufacturer in the
following website: http://www.carel.com
2.1 Hardware parts
The controller consists of an I/O board featuring a micro processor controller and an internal memory. The
board may be supplied with various interface cards for communication with the control systems.
The user interface consists of a backlit LCD monitor intended for panel mounting. A wall-mounted remote
terminal is available as an accessory.
2.2 I/O board
The I/O pCO Large board (Figure 2-1) has 10 analogue inputs (6 universal and 4 passive inputs), 18 digital
inputs, 6 analogue outputs and 18 digital outputs.
Figure 2-1 - I/O Large board
As regards the electrical supply connections and the connection of the board inputs and outputs, refer to the
wiring diagram of the unit and the manual supplied by the board manufacturer.