Servodrives / inverters series COSMOS 301X Installation, use and maintenance manual - EN
4 TECHNICAL FEATURES
4.1 Description
The servo-drives/inverters of the COSMOS 301X series have been designed for three-phase asynchronous
electrical motors and for brushless AC motors (BLAC). The core of the power section is an intelligent IGBT
module (IPM), featuring the necessary protections that guarantee an extreme reliability and efficiency,
besides reducing the need for external components. The servo-drives/inverters of the COSMOS 301X series
for asynchronous and brushless motors is constituted by an aluminium dissipater and by electronic boards
included in a special “plastic case”.
In particular, the servo-drives/inverters of the COSMOS 301X series for asynchronous and/or brushless AC
motors can control start/stop functions, motor speed and position and motor torque and can perform
diagnostic activity, etc. They are also used to manage abnormal conditions, by providing real-time diagnostic
information (diagnostics are included in the machine into which the drive is incorporated) that can be viewed
by connecting the system to other instruments (such as an HMI) or by using a “master” device (on versions
equipped with a field bus).
Servo-drives/inverters for asynchronous and brushless motors are mainly intended for the so-called “second
environment”, i.e. heavy industry. Some versions only require 230V AC single-phase power supply; others
require 24V DC auxiliary power.
The control logic is implemented by 32-bit micro-controllers, equipped with a set of instructions optimized for
speed and specialized in controlling precision motors. Thanks to their design features, the drives/inverters
can be considered as of digital type, because they are completely controlled by the micro-controller. As a
consequence, the servo-drive/inverter is a very flexible appliance which can be reset through a software and
is open to all improvements offered by the new technologies in the future.
The equipment is designed for asynchronous motors and brushless AC motors. It operates on 230VAC
single-phase power and on 24VDC auxiliary power (on certain versions only). Auxiliary power, when
applicable, is used to feed the control section of the device.
Versions equipped with field bus interface feature a “master” device sending commands to the equipment
(such as start, stop, motor speed/position, parameters for the motor and/or servo-drive/inverter, etc.),
besides having a diagnostic function.
Some versions of servo-drive/inverter can be connected to an external HMI display (model “VISIO 3000”),
which performs diagnostic functions, parametrization, parameters readout, analogue/digital values readout,
besides sending some commands to the equipment.
The equipment operation is controlled by micro-controllers, which can be updated by uploading new firmware
versions. They communicate through field bus, they can control analogue/digital I/O and the motor.
Ver. 1.09 SMITECdd 10/74
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